./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5574142529d95f295134c1dccd4c5dbe0383ae5c309e7dc50fd933e5702659ed --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:47:28,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:47:28,084 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 08:47:28,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:47:28,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:47:28,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:47:28,112 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:47:28,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:47:28,113 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:47:28,113 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:47:28,113 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:47:28,113 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:47:28,114 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:47:28,114 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:47:28,114 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:47:28,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:47:28,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:47:28,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:47:28,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:47:28,114 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:47:28,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:47:28,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:47:28,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:47:28,115 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:47:28,115 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:47:28,115 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:47:28,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:47:28,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:47:28,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:47:28,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:47:28,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:47:28,116 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:47:28,116 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:47:28,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:47:28,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:47:28,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:47:28,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:47:28,116 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:47:28,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:47:28,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:47:28,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:47:28,116 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:47:28,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:47:28,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:47:28,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:47:28,117 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> 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 -> 5574142529d95f295134c1dccd4c5dbe0383ae5c309e7dc50fd933e5702659ed [2024-12-02 08:47:28,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:47:28,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:47:28,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:47:28,373 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:47:28,373 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:47:28,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i [2024-12-02 08:47:31,060 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/data/62da0f0a7/265fc514b6074e16904d98d96b593dfc/FLAGe23707def [2024-12-02 08:47:31,529 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:47:31,529 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i [2024-12-02 08:47:31,574 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/data/62da0f0a7/265fc514b6074e16904d98d96b593dfc/FLAGe23707def [2024-12-02 08:47:31,589 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/data/62da0f0a7/265fc514b6074e16904d98d96b593dfc [2024-12-02 08:47:31,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:47:31,593 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:47:31,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:47:31,594 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:47:31,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:47:31,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:47:31" (1/1) ... [2024-12-02 08:47:31,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6ea5f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:31, skipping insertion in model container [2024-12-02 08:47:31,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:47:31" (1/1) ... [2024-12-02 08:47:31,693 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:47:33,763 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273031,273044] [2024-12-02 08:47:33,766 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273176,273189] [2024-12-02 08:47:33,766 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273322,273335] [2024-12-02 08:47:33,767 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273487,273500] [2024-12-02 08:47:33,767 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273645,273658] [2024-12-02 08:47:33,767 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273803,273816] [2024-12-02 08:47:33,768 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273961,273974] [2024-12-02 08:47:33,768 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274121,274134] [2024-12-02 08:47:33,768 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274280,274293] [2024-12-02 08:47:33,769 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274419,274432] [2024-12-02 08:47:33,769 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274561,274574] [2024-12-02 08:47:33,769 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274710,274723] [2024-12-02 08:47:33,770 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274849,274862] [2024-12-02 08:47:33,770 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275004,275017] [2024-12-02 08:47:33,770 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275164,275177] [2024-12-02 08:47:33,771 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275315,275328] [2024-12-02 08:47:33,771 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275466,275479] [2024-12-02 08:47:33,771 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275618,275631] [2024-12-02 08:47:33,772 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275767,275780] [2024-12-02 08:47:33,772 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275915,275928] [2024-12-02 08:47:33,773 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276072,276085] [2024-12-02 08:47:33,773 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276221,276234] [2024-12-02 08:47:33,774 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276377,276390] [2024-12-02 08:47:33,774 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276530,276543] [2024-12-02 08:47:33,774 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276676,276689] [2024-12-02 08:47:33,775 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276819,276832] [2024-12-02 08:47:33,775 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276971,276984] [2024-12-02 08:47:33,775 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277117,277130] [2024-12-02 08:47:33,776 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277262,277275] [2024-12-02 08:47:33,776 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277416,277429] [2024-12-02 08:47:33,776 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277567,277580] [2024-12-02 08:47:33,777 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277722,277735] [2024-12-02 08:47:33,777 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277874,277887] [2024-12-02 08:47:33,777 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278029,278042] [2024-12-02 08:47:33,778 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278193,278206] [2024-12-02 08:47:33,778 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278349,278362] [2024-12-02 08:47:33,778 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278513,278526] [2024-12-02 08:47:33,779 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278655,278668] [2024-12-02 08:47:33,779 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278813,278826] [2024-12-02 08:47:33,779 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278980,278993] [2024-12-02 08:47:33,780 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279139,279152] [2024-12-02 08:47:33,780 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279298,279311] [2024-12-02 08:47:33,780 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279447,279460] [2024-12-02 08:47:33,781 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279594,279607] [2024-12-02 08:47:33,781 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279733,279746] [2024-12-02 08:47:33,781 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279896,279909] [2024-12-02 08:47:33,782 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280062,280075] [2024-12-02 08:47:33,782 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280226,280239] [2024-12-02 08:47:33,782 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280391,280404] [2024-12-02 08:47:33,783 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280556,280569] [2024-12-02 08:47:33,783 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280722,280735] [2024-12-02 08:47:33,783 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280887,280900] [2024-12-02 08:47:33,784 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281054,281067] [2024-12-02 08:47:33,784 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281214,281227] [2024-12-02 08:47:33,784 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281376,281389] [2024-12-02 08:47:33,785 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281535,281548] [2024-12-02 08:47:33,785 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281681,281694] [2024-12-02 08:47:33,785 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281824,281837] [2024-12-02 08:47:33,786 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281968,281981] [2024-12-02 08:47:33,786 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282111,282124] [2024-12-02 08:47:33,786 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282255,282268] [2024-12-02 08:47:33,787 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282396,282409] [2024-12-02 08:47:33,787 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282534,282547] [2024-12-02 08:47:33,787 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282692,282705] [2024-12-02 08:47:33,788 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282851,282864] [2024-12-02 08:47:33,788 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283007,283020] [2024-12-02 08:47:33,788 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283156,283169] [2024-12-02 08:47:33,788 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283308,283321] [2024-12-02 08:47:33,789 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283459,283472] [2024-12-02 08:47:33,789 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283608,283621] [2024-12-02 08:47:33,789 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283760,283773] [2024-12-02 08:47:33,789 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283908,283921] [2024-12-02 08:47:33,789 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284061,284074] [2024-12-02 08:47:33,790 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284212,284225] [2024-12-02 08:47:33,790 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284362,284375] [2024-12-02 08:47:33,790 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284509,284522] [2024-12-02 08:47:33,790 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284660,284673] [2024-12-02 08:47:33,791 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284811,284824] [2024-12-02 08:47:33,791 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284959,284972] [2024-12-02 08:47:33,791 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285125,285138] [2024-12-02 08:47:33,791 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285294,285307] [2024-12-02 08:47:33,792 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285461,285474] [2024-12-02 08:47:33,792 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285629,285642] [2024-12-02 08:47:33,792 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285779,285792] [2024-12-02 08:47:33,792 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285926,285939] [2024-12-02 08:47:33,793 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[286087,286100] [2024-12-02 08:47:33,793 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[286257,286270] [2024-12-02 08:47:33,793 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[286419,286432] [2024-12-02 08:47:33,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:47:33,822 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:47:33,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [4644] [2024-12-02 08:47:33,923 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [4799] [2024-12-02 08:47:33,937 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [5192] [2024-12-02 08:47:33,997 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273031,273044] [2024-12-02 08:47:33,997 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273176,273189] [2024-12-02 08:47:33,998 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273322,273335] [2024-12-02 08:47:33,998 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273487,273500] [2024-12-02 08:47:33,998 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273645,273658] [2024-12-02 08:47:33,998 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273803,273816] [2024-12-02 08:47:33,999 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273961,273974] [2024-12-02 08:47:33,999 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274121,274134] [2024-12-02 08:47:33,999 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274280,274293] [2024-12-02 08:47:33,999 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274419,274432] [2024-12-02 08:47:34,000 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274561,274574] [2024-12-02 08:47:34,000 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274710,274723] [2024-12-02 08:47:34,000 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274849,274862] [2024-12-02 08:47:34,001 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275004,275017] [2024-12-02 08:47:34,001 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275164,275177] [2024-12-02 08:47:34,001 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275315,275328] [2024-12-02 08:47:34,001 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275466,275479] [2024-12-02 08:47:34,002 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275618,275631] [2024-12-02 08:47:34,002 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275767,275780] [2024-12-02 08:47:34,002 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275915,275928] [2024-12-02 08:47:34,002 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276072,276085] [2024-12-02 08:47:34,003 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276221,276234] [2024-12-02 08:47:34,003 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276377,276390] [2024-12-02 08:47:34,003 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276530,276543] [2024-12-02 08:47:34,003 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276676,276689] [2024-12-02 08:47:34,004 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276819,276832] [2024-12-02 08:47:34,004 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276971,276984] [2024-12-02 08:47:34,004 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277117,277130] [2024-12-02 08:47:34,005 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277262,277275] [2024-12-02 08:47:34,005 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277416,277429] [2024-12-02 08:47:34,005 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277567,277580] [2024-12-02 08:47:34,005 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277722,277735] [2024-12-02 08:47:34,006 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277874,277887] [2024-12-02 08:47:34,006 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278029,278042] [2024-12-02 08:47:34,006 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278193,278206] [2024-12-02 08:47:34,007 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278349,278362] [2024-12-02 08:47:34,007 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278513,278526] [2024-12-02 08:47:34,007 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278655,278668] [2024-12-02 08:47:34,007 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278813,278826] [2024-12-02 08:47:34,008 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278980,278993] [2024-12-02 08:47:34,008 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279139,279152] [2024-12-02 08:47:34,008 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279298,279311] [2024-12-02 08:47:34,009 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279447,279460] [2024-12-02 08:47:34,009 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279594,279607] [2024-12-02 08:47:34,009 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279733,279746] [2024-12-02 08:47:34,009 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279896,279909] [2024-12-02 08:47:34,009 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280062,280075] [2024-12-02 08:47:34,010 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280226,280239] [2024-12-02 08:47:34,010 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280391,280404] [2024-12-02 08:47:34,010 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280556,280569] [2024-12-02 08:47:34,010 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280722,280735] [2024-12-02 08:47:34,011 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280887,280900] [2024-12-02 08:47:34,011 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281054,281067] [2024-12-02 08:47:34,011 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281214,281227] [2024-12-02 08:47:34,011 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281376,281389] [2024-12-02 08:47:34,012 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281535,281548] [2024-12-02 08:47:34,012 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281681,281694] [2024-12-02 08:47:34,012 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281824,281837] [2024-12-02 08:47:34,012 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281968,281981] [2024-12-02 08:47:34,013 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282111,282124] [2024-12-02 08:47:34,013 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282255,282268] [2024-12-02 08:47:34,013 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282396,282409] [2024-12-02 08:47:34,013 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282534,282547] [2024-12-02 08:47:34,014 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282692,282705] [2024-12-02 08:47:34,014 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282851,282864] [2024-12-02 08:47:34,014 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283007,283020] [2024-12-02 08:47:34,014 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283156,283169] [2024-12-02 08:47:34,014 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283308,283321] [2024-12-02 08:47:34,015 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283459,283472] [2024-12-02 08:47:34,015 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283608,283621] [2024-12-02 08:47:34,015 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283760,283773] [2024-12-02 08:47:34,015 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283908,283921] [2024-12-02 08:47:34,016 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284061,284074] [2024-12-02 08:47:34,016 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284212,284225] [2024-12-02 08:47:34,016 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284362,284375] [2024-12-02 08:47:34,016 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284509,284522] [2024-12-02 08:47:34,017 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284660,284673] [2024-12-02 08:47:34,017 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284811,284824] [2024-12-02 08:47:34,017 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284959,284972] [2024-12-02 08:47:34,017 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285125,285138] [2024-12-02 08:47:34,017 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285294,285307] [2024-12-02 08:47:34,018 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285461,285474] [2024-12-02 08:47:34,018 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285629,285642] [2024-12-02 08:47:34,018 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285779,285792] [2024-12-02 08:47:34,018 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285926,285939] [2024-12-02 08:47:34,019 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[286087,286100] [2024-12-02 08:47:34,019 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[286257,286270] [2024-12-02 08:47:34,019 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[286419,286432] [2024-12-02 08:47:34,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:47:34,151 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:47:34,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34 WrapperNode [2024-12-02 08:47:34,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:47:34,152 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:47:34,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:47:34,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:47:34,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,304 INFO L138 Inliner]: procedures = 526, calls = 1370, calls flagged for inlining = 224, calls inlined = 135, statements flattened = 2492 [2024-12-02 08:47:34,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:47:34,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:47:34,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:47:34,306 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:47:34,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,656 INFO L175 MemorySlicer]: Split 355 memory accesses to 11 slices as follows [2, 7, 1, 3, 2, 23, 5, 4, 3, 277, 28]. 78 percent of accesses are in the largest equivalence class. The 40 initializations are split as follows [0, 7, 1, 0, 2, 0, 0, 4, 0, 26, 0]. The 184 writes are split as follows [0, 0, 0, 0, 0, 23, 5, 0, 0, 132, 24]. [2024-12-02 08:47:34,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,724 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:47:34,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:47:34,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:47:34,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:47:34,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (1/1) ... [2024-12-02 08:47:34,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:47:34,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:47:34,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:47:34,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:47:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2024-12-02 08:47:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2024-12-02 08:47:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-12-02 08:47:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-12-02 08:47:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2024-12-02 08:47:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2024-12-02 08:47:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2024-12-02 08:47:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2024-12-02 08:47:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2024-12-02 08:47:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2024-12-02 08:47:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2024-12-02 08:47:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2024-12-02 08:47:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2024-12-02 08:47:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2024-12-02 08:47:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_read_buffer_lock_of_lego_usb_tower [2024-12-02 08:47:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_read_buffer_lock_of_lego_usb_tower [2024-12-02 08:47:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2024-12-02 08:47:34,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2024-12-02 08:47:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-12-02 08:47:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2024-12-02 08:47:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-12-02 08:47:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2024-12-02 08:47:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2024-12-02 08:47:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-12-02 08:47:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2024-12-02 08:47:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2024-12-02 08:47:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2024-12-02 08:47:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_112 [2024-12-02 08:47:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_112 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2024-12-02 08:47:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-12-02 08:47:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2024-12-02 08:47:34,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2024-12-02 08:47:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2024-12-02 08:47:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2024-12-02 08:47:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2024-12-02 08:47:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2024-12-02 08:47:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2024-12-02 08:47:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2024-12-02 08:47:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2024-12-02 08:47:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2024-12-02 08:47:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2024-12-02 08:47:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2024-12-02 08:47:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2024-12-02 08:47:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2024-12-02 08:47:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2024-12-02 08:47:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2024-12-02 08:47:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_open_disc_mutex [2024-12-02 08:47:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_open_disc_mutex [2024-12-02 08:47:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_lock_of_lego_usb_tower [2024-12-02 08:47:34,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_lock_of_lego_usb_tower [2024-12-02 08:47:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2024-12-02 08:47:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-12-02 08:47:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2024-12-02 08:47:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2024-12-02 08:47:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2024-12-02 08:47:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2024-12-02 08:47:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2024-12-02 08:47:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_irq_check_alloc_flags [2024-12-02 08:47:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_irq_check_alloc_flags [2024-12-02 08:47:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2024-12-02 08:47:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2024-12-02 08:47:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2024-12-02 08:47:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2024-12-02 08:47:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_open_disc_mutex [2024-12-02 08:47:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_open_disc_mutex [2024-12-02 08:47:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2024-12-02 08:47:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2024-12-02 08:47:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2024-12-02 08:47:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2024-12-02 08:47:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:47:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:47:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2024-12-02 08:47:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2024-12-02 08:47:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure tower_disconnect [2024-12-02 08:47:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure tower_disconnect [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-12-02 08:47:34,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2024-12-02 08:47:34,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2024-12-02 08:47:34,853 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2024-12-02 08:47:34,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2024-12-02 08:47:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_free_urb [2024-12-02 08:47:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_free_urb [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2024-12-02 08:47:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2024-12-02 08:47:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_lock_of_lego_usb_tower [2024-12-02 08:47:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_lock_of_lego_usb_tower [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2024-12-02 08:47:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2024-12-02 08:47:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 08:47:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2024-12-02 08:47:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-12-02 08:47:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-12-02 08:47:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-12-02 08:47:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-12-02 08:47:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2024-12-02 08:47:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2024-12-02 08:47:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2024-12-02 08:47:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2024-12-02 08:47:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2024-12-02 08:47:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2024-12-02 08:47:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_interruptible_or_killable_lock_of_lego_usb_tower [2024-12-02 08:47:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_interruptible_or_killable_lock_of_lego_usb_tower [2024-12-02 08:47:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2024-12-02 08:47:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2024-12-02 08:47:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_alloc_urb [2024-12-02 08:47:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_alloc_urb [2024-12-02 08:47:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2024-12-02 08:47:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2024-12-02 08:47:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2024-12-02 08:47:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2024-12-02 08:47:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2024-12-02 08:47:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2024-12-02 08:47:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2024-12-02 08:47:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2024-12-02 08:47:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2024-12-02 08:47:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2024-12-02 08:47:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2024-12-02 08:47:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_read_buffer_lock_of_lego_usb_tower [2024-12-02 08:47:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_read_buffer_lock_of_lego_usb_tower [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-12-02 08:47:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2024-12-02 08:47:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure tower_delete [2024-12-02 08:47:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure tower_delete [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 08:47:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-12-02 08:47:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-12-02 08:47:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2024-12-02 08:47:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2024-12-02 08:47:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-12-02 08:47:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-12-02 08:47:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2024-12-02 08:47:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2024-12-02 08:47:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2024-12-02 08:47:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2024-12-02 08:47:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2024-12-02 08:47:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2024-12-02 08:47:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2024-12-02 08:47:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2024-12-02 08:47:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure tower_check_for_read_packet [2024-12-02 08:47:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure tower_check_for_read_packet [2024-12-02 08:47:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:47:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:47:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 08:47:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 08:47:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 08:47:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 08:47:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 08:47:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 08:47:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 08:47:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 08:47:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 08:47:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure tower_abort_transfers [2024-12-02 08:47:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure tower_abort_transfers [2024-12-02 08:47:34,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_111 [2024-12-02 08:47:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_111 [2024-12-02 08:47:35,316 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:47:35,319 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:47:35,458 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-12-02 08:47:42,448 INFO L? ?]: Removed 1159 outVars from TransFormulas that were not future-live. [2024-12-02 08:47:42,448 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:47:42,480 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:47:42,481 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 08:47:42,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:47:42 BoogieIcfgContainer [2024-12-02 08:47:42,481 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:47:42,484 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:47:42,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:47:42,491 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:47:42,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:47:31" (1/3) ... [2024-12-02 08:47:42,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ac33f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:47:42, skipping insertion in model container [2024-12-02 08:47:42,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:34" (2/3) ... [2024-12-02 08:47:42,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ac33f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:47:42, skipping insertion in model container [2024-12-02 08:47:42,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:47:42" (3/3) ... [2024-12-02 08:47:42,493 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i [2024-12-02 08:47:42,511 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:47:42,514 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i that has 81 procedures, 1067 locations, 1 initial locations, 0 loop locations, and 30 error locations. [2024-12-02 08:47:42,653 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:47:42,664 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11dceab7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:47:42,664 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-12-02 08:47:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 1066 states, 692 states have (on average 1.283236994219653) internal successors, (888), 745 states have internal predecessors, (888), 264 states have call successors, (264), 80 states have call predecessors, (264), 79 states have return successors, (259), 249 states have call predecessors, (259), 259 states have call successors, (259) [2024-12-02 08:47:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-02 08:47:42,678 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:42,678 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:42,679 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:47:42,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:42,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1954184494, now seen corresponding path program 1 times [2024-12-02 08:47:42,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:42,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400130789] [2024-12-02 08:47:42,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:42,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:47:44,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:44,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400130789] [2024-12-02 08:47:44,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400130789] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:44,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:44,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:47:44,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375114492] [2024-12-02 08:47:44,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:44,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:44,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:44,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:44,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:47:44,692 INFO L87 Difference]: Start difference. First operand has 1066 states, 692 states have (on average 1.283236994219653) internal successors, (888), 745 states have internal predecessors, (888), 264 states have call successors, (264), 80 states have call predecessors, (264), 79 states have return successors, (259), 249 states have call predecessors, (259), 259 states have call successors, (259) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 08:47:44,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:44,932 INFO L93 Difference]: Finished difference Result 2083 states and 2852 transitions. [2024-12-02 08:47:44,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:47:44,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2024-12-02 08:47:44,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:44,955 INFO L225 Difference]: With dead ends: 2083 [2024-12-02 08:47:44,955 INFO L226 Difference]: Without dead ends: 1048 [2024-12-02 08:47:44,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:47:44,967 INFO L435 NwaCegarLoop]: 1368 mSDtfsCounter, 1338 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:44,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 2735 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2024-12-02 08:47:45,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1048. [2024-12-02 08:47:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 682 states have (on average 1.2258064516129032) internal successors, (836), 730 states have internal predecessors, (836), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:47:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1352 transitions. [2024-12-02 08:47:45,105 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1352 transitions. Word has length 71 [2024-12-02 08:47:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:45,107 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 1352 transitions. [2024-12-02 08:47:45,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 08:47:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1352 transitions. [2024-12-02 08:47:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 08:47:45,110 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:45,111 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:45,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:47:45,111 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:47:45,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:45,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1831593091, now seen corresponding path program 1 times [2024-12-02 08:47:45,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:45,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101550759] [2024-12-02 08:47:45,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:45,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:47:46,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:46,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101550759] [2024-12-02 08:47:46,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101550759] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:46,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:46,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:47:46,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581057666] [2024-12-02 08:47:46,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:46,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:46,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:46,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:46,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:47:46,524 INFO L87 Difference]: Start difference. First operand 1048 states and 1352 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 08:47:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:46,630 INFO L93 Difference]: Finished difference Result 1048 states and 1352 transitions. [2024-12-02 08:47:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:47:46,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 77 [2024-12-02 08:47:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:46,639 INFO L225 Difference]: With dead ends: 1048 [2024-12-02 08:47:46,639 INFO L226 Difference]: Without dead ends: 1046 [2024-12-02 08:47:46,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:47:46,641 INFO L435 NwaCegarLoop]: 1348 mSDtfsCounter, 1317 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:46,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 2695 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:46,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2024-12-02 08:47:46,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1046. [2024-12-02 08:47:46,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 681 states have (on average 1.224669603524229) internal successors, (834), 728 states have internal predecessors, (834), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:47:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1350 transitions. [2024-12-02 08:47:46,710 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1350 transitions. Word has length 77 [2024-12-02 08:47:46,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:46,711 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1350 transitions. [2024-12-02 08:47:46,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 08:47:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1350 transitions. [2024-12-02 08:47:46,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 08:47:46,713 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:46,713 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:46,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:47:46,713 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:47:46,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:46,714 INFO L85 PathProgramCache]: Analyzing trace with hash 232852419, now seen corresponding path program 1 times [2024-12-02 08:47:46,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:46,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406924308] [2024-12-02 08:47:46,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:46,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:47:48,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:48,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406924308] [2024-12-02 08:47:48,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406924308] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:48,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:48,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:47:48,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181467023] [2024-12-02 08:47:48,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:48,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:48,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:48,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:48,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:47:48,046 INFO L87 Difference]: Start difference. First operand 1046 states and 1350 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 08:47:48,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:48,159 INFO L93 Difference]: Finished difference Result 1046 states and 1350 transitions. [2024-12-02 08:47:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:47:48,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2024-12-02 08:47:48,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:48,166 INFO L225 Difference]: With dead ends: 1046 [2024-12-02 08:47:48,166 INFO L226 Difference]: Without dead ends: 1044 [2024-12-02 08:47:48,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:47:48,168 INFO L435 NwaCegarLoop]: 1346 mSDtfsCounter, 1314 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:48,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 2691 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2024-12-02 08:47:48,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2024-12-02 08:47:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 680 states have (on average 1.223529411764706) internal successors, (832), 726 states have internal predecessors, (832), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:47:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1348 transitions. [2024-12-02 08:47:48,239 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1348 transitions. Word has length 83 [2024-12-02 08:47:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:48,239 INFO L471 AbstractCegarLoop]: Abstraction has 1044 states and 1348 transitions. [2024-12-02 08:47:48,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 08:47:48,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1348 transitions. [2024-12-02 08:47:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 08:47:48,242 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:48,242 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:48,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:47:48,242 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:47:48,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:48,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1200582179, now seen corresponding path program 1 times [2024-12-02 08:47:48,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:48,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124244336] [2024-12-02 08:47:48,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:48,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:47:49,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:49,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124244336] [2024-12-02 08:47:49,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124244336] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:49,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:49,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:47:49,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693340719] [2024-12-02 08:47:49,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:49,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:49,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:49,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:49,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:47:49,325 INFO L87 Difference]: Start difference. First operand 1044 states and 1348 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 08:47:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:49,440 INFO L93 Difference]: Finished difference Result 1044 states and 1348 transitions. [2024-12-02 08:47:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:47:49,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 89 [2024-12-02 08:47:49,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:49,448 INFO L225 Difference]: With dead ends: 1044 [2024-12-02 08:47:49,448 INFO L226 Difference]: Without dead ends: 1042 [2024-12-02 08:47:49,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:47:49,450 INFO L435 NwaCegarLoop]: 1344 mSDtfsCounter, 1311 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:49,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 2687 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:49,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2024-12-02 08:47:49,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1042. [2024-12-02 08:47:49,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 679 states have (on average 1.2223858615611194) internal successors, (830), 724 states have internal predecessors, (830), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:47:49,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1346 transitions. [2024-12-02 08:47:49,524 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1346 transitions. Word has length 89 [2024-12-02 08:47:49,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:49,525 INFO L471 AbstractCegarLoop]: Abstraction has 1042 states and 1346 transitions. [2024-12-02 08:47:49,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 08:47:49,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1346 transitions. [2024-12-02 08:47:49,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 08:47:49,526 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:49,527 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:49,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:47:49,527 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:47:49,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:49,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2087623650, now seen corresponding path program 1 times [2024-12-02 08:47:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:49,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008473845] [2024-12-02 08:47:49,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:49,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:50,712 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:47:50,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:50,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008473845] [2024-12-02 08:47:50,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008473845] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:50,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:50,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:47:50,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217739493] [2024-12-02 08:47:50,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:50,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:50,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:50,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:50,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:47:50,715 INFO L87 Difference]: Start difference. First operand 1042 states and 1346 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 08:47:50,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:50,872 INFO L93 Difference]: Finished difference Result 1042 states and 1346 transitions. [2024-12-02 08:47:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:47:50,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2024-12-02 08:47:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:50,880 INFO L225 Difference]: With dead ends: 1042 [2024-12-02 08:47:50,880 INFO L226 Difference]: Without dead ends: 1040 [2024-12-02 08:47:50,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:47:50,881 INFO L435 NwaCegarLoop]: 1342 mSDtfsCounter, 1308 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:50,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 2683 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:50,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2024-12-02 08:47:50,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1040. [2024-12-02 08:47:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 678 states have (on average 1.2212389380530972) internal successors, (828), 722 states have internal predecessors, (828), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:47:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1344 transitions. [2024-12-02 08:47:50,997 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1344 transitions. Word has length 95 [2024-12-02 08:47:50,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:50,998 INFO L471 AbstractCegarLoop]: Abstraction has 1040 states and 1344 transitions. [2024-12-02 08:47:50,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 08:47:50,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1344 transitions. [2024-12-02 08:47:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 08:47:51,000 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:51,000 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:51,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:47:51,000 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:47:51,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:51,001 INFO L85 PathProgramCache]: Analyzing trace with hash 73319135, now seen corresponding path program 1 times [2024-12-02 08:47:51,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:51,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240145628] [2024-12-02 08:47:51,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:51,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:47:51,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:51,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240145628] [2024-12-02 08:47:51,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240145628] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:51,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:51,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:47:51,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467943142] [2024-12-02 08:47:51,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:51,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:51,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:51,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:51,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:47:51,974 INFO L87 Difference]: Start difference. First operand 1040 states and 1344 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 08:47:52,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:52,057 INFO L93 Difference]: Finished difference Result 1040 states and 1344 transitions. [2024-12-02 08:47:52,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:47:52,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2024-12-02 08:47:52,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:52,063 INFO L225 Difference]: With dead ends: 1040 [2024-12-02 08:47:52,063 INFO L226 Difference]: Without dead ends: 1038 [2024-12-02 08:47:52,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:47:52,064 INFO L435 NwaCegarLoop]: 1340 mSDtfsCounter, 1305 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:52,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 2679 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:52,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2024-12-02 08:47:52,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1038. [2024-12-02 08:47:52,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 677 states have (on average 1.2200886262924668) internal successors, (826), 720 states have internal predecessors, (826), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:47:52,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1342 transitions. [2024-12-02 08:47:52,118 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1342 transitions. Word has length 101 [2024-12-02 08:47:52,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:52,118 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1342 transitions. [2024-12-02 08:47:52,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 08:47:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1342 transitions. [2024-12-02 08:47:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 08:47:52,120 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:52,121 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:52,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:47:52,121 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:47:52,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:52,121 INFO L85 PathProgramCache]: Analyzing trace with hash -372696350, now seen corresponding path program 1 times [2024-12-02 08:47:52,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:52,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458352532] [2024-12-02 08:47:52,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:52,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:47:53,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:53,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458352532] [2024-12-02 08:47:53,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458352532] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:53,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:53,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:47:53,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726145489] [2024-12-02 08:47:53,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:53,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:53,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:53,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:53,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:47:53,206 INFO L87 Difference]: Start difference. First operand 1038 states and 1342 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 08:47:53,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:53,327 INFO L93 Difference]: Finished difference Result 1038 states and 1342 transitions. [2024-12-02 08:47:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:47:53,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 107 [2024-12-02 08:47:53,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:53,335 INFO L225 Difference]: With dead ends: 1038 [2024-12-02 08:47:53,335 INFO L226 Difference]: Without dead ends: 1036 [2024-12-02 08:47:53,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:47:53,337 INFO L435 NwaCegarLoop]: 1338 mSDtfsCounter, 1302 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:53,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 2675 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:53,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2024-12-02 08:47:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1036. [2024-12-02 08:47:53,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 676 states have (on average 1.2189349112426036) internal successors, (824), 718 states have internal predecessors, (824), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:47:53,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1340 transitions. [2024-12-02 08:47:53,414 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1340 transitions. Word has length 107 [2024-12-02 08:47:53,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:53,415 INFO L471 AbstractCegarLoop]: Abstraction has 1036 states and 1340 transitions. [2024-12-02 08:47:53,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 08:47:53,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1340 transitions. [2024-12-02 08:47:53,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 08:47:53,417 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:53,417 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:53,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:47:53,417 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:47:53,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:53,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1237568151, now seen corresponding path program 1 times [2024-12-02 08:47:53,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:53,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212374847] [2024-12-02 08:47:53,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:53,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:47:54,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:54,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212374847] [2024-12-02 08:47:54,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212374847] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:54,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:54,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:47:54,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444566339] [2024-12-02 08:47:54,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:54,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:54,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:54,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:54,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:47:54,584 INFO L87 Difference]: Start difference. First operand 1036 states and 1340 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:47:54,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:54,668 INFO L93 Difference]: Finished difference Result 1036 states and 1340 transitions. [2024-12-02 08:47:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:47:54,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 113 [2024-12-02 08:47:54,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:54,674 INFO L225 Difference]: With dead ends: 1036 [2024-12-02 08:47:54,674 INFO L226 Difference]: Without dead ends: 1034 [2024-12-02 08:47:54,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:47:54,675 INFO L435 NwaCegarLoop]: 1336 mSDtfsCounter, 1299 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:54,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 2671 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-12-02 08:47:54,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2024-12-02 08:47:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 675 states have (on average 1.2177777777777778) internal successors, (822), 716 states have internal predecessors, (822), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:47:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1338 transitions. [2024-12-02 08:47:54,727 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1338 transitions. Word has length 113 [2024-12-02 08:47:54,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:54,727 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1338 transitions. [2024-12-02 08:47:54,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:47:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1338 transitions. [2024-12-02 08:47:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 08:47:54,729 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:54,729 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:54,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:47:54,729 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:47:54,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash -402815878, now seen corresponding path program 1 times [2024-12-02 08:47:54,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:54,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764504242] [2024-12-02 08:47:54,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:54,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:47:55,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:55,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764504242] [2024-12-02 08:47:55,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764504242] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:55,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:47:55,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340520816] [2024-12-02 08:47:55,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:55,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:55,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:55,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:55,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:47:55,716 INFO L87 Difference]: Start difference. First operand 1034 states and 1338 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:47:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:55,819 INFO L93 Difference]: Finished difference Result 1034 states and 1338 transitions. [2024-12-02 08:47:55,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:47:55,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 115 [2024-12-02 08:47:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:55,824 INFO L225 Difference]: With dead ends: 1034 [2024-12-02 08:47:55,824 INFO L226 Difference]: Without dead ends: 1032 [2024-12-02 08:47:55,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:47:55,825 INFO L435 NwaCegarLoop]: 1334 mSDtfsCounter, 1295 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:55,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 2667 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:47:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2024-12-02 08:47:55,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1032. [2024-12-02 08:47:55,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 674 states have (on average 1.2166172106824926) internal successors, (820), 714 states have internal predecessors, (820), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:47:55,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1336 transitions. [2024-12-02 08:47:55,879 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1336 transitions. Word has length 115 [2024-12-02 08:47:55,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:55,879 INFO L471 AbstractCegarLoop]: Abstraction has 1032 states and 1336 transitions. [2024-12-02 08:47:55,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 08:47:55,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1336 transitions. [2024-12-02 08:47:55,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 08:47:55,882 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:55,882 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:55,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:47:55,882 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:47:55,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:55,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2123719673, now seen corresponding path program 1 times [2024-12-02 08:47:55,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:55,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912334224] [2024-12-02 08:47:55,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:55,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-12-02 08:47:57,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:57,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912334224] [2024-12-02 08:47:57,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912334224] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:57,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:57,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:47:57,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165730576] [2024-12-02 08:47:57,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:57,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:47:57,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:57,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:47:57,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:47:57,965 INFO L87 Difference]: Start difference. First operand 1032 states and 1336 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 08:48:02,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:48:04,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:04,588 INFO L93 Difference]: Finished difference Result 2025 states and 2624 transitions. [2024-12-02 08:48:04,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:48:04,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 164 [2024-12-02 08:48:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:04,597 INFO L225 Difference]: With dead ends: 2025 [2024-12-02 08:48:04,597 INFO L226 Difference]: Without dead ends: 1032 [2024-12-02 08:48:04,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:48:04,601 INFO L435 NwaCegarLoop]: 1332 mSDtfsCounter, 1294 mSDsluCounter, 3476 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 4808 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:04,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 4808 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 527 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2024-12-02 08:48:04,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2024-12-02 08:48:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1032. [2024-12-02 08:48:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 674 states have (on average 1.21513353115727) internal successors, (819), 714 states have internal predecessors, (819), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:48:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1335 transitions. [2024-12-02 08:48:04,709 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1335 transitions. Word has length 164 [2024-12-02 08:48:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:04,709 INFO L471 AbstractCegarLoop]: Abstraction has 1032 states and 1335 transitions. [2024-12-02 08:48:04,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 08:48:04,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1335 transitions. [2024-12-02 08:48:04,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 08:48:04,712 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:04,712 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:04,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:48:04,712 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:04,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:04,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2123660091, now seen corresponding path program 1 times [2024-12-02 08:48:04,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:04,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074123425] [2024-12-02 08:48:04,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:04,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-12-02 08:48:06,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:06,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074123425] [2024-12-02 08:48:06,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074123425] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:06,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:06,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:06,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048772940] [2024-12-02 08:48:06,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:06,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:06,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:06,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:06,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:06,127 INFO L87 Difference]: Start difference. First operand 1032 states and 1335 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 08:48:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:06,283 INFO L93 Difference]: Finished difference Result 1032 states and 1335 transitions. [2024-12-02 08:48:06,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:06,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 164 [2024-12-02 08:48:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:06,289 INFO L225 Difference]: With dead ends: 1032 [2024-12-02 08:48:06,289 INFO L226 Difference]: Without dead ends: 1030 [2024-12-02 08:48:06,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:06,291 INFO L435 NwaCegarLoop]: 1331 mSDtfsCounter, 0 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3990 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:06,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3990 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:06,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2024-12-02 08:48:06,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1030. [2024-12-02 08:48:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 673 states have (on average 1.213967310549777) internal successors, (817), 712 states have internal predecessors, (817), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:48:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1333 transitions. [2024-12-02 08:48:06,400 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1333 transitions. Word has length 164 [2024-12-02 08:48:06,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:06,401 INFO L471 AbstractCegarLoop]: Abstraction has 1030 states and 1333 transitions. [2024-12-02 08:48:06,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-02 08:48:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1333 transitions. [2024-12-02 08:48:06,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 08:48:06,403 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:06,403 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:06,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:48:06,404 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_linux_kernel_module_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:06,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:06,404 INFO L85 PathProgramCache]: Analyzing trace with hash 15096843, now seen corresponding path program 1 times [2024-12-02 08:48:06,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:06,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802612415] [2024-12-02 08:48:06,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:06,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:48:07,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:07,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802612415] [2024-12-02 08:48:07,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802612415] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:07,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:07,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:07,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866096762] [2024-12-02 08:48:07,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:07,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:07,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:07,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:07,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:07,382 INFO L87 Difference]: Start difference. First operand 1030 states and 1333 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 08:48:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:07,508 INFO L93 Difference]: Finished difference Result 1030 states and 1333 transitions. [2024-12-02 08:48:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:07,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 121 [2024-12-02 08:48:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:07,515 INFO L225 Difference]: With dead ends: 1030 [2024-12-02 08:48:07,515 INFO L226 Difference]: Without dead ends: 1028 [2024-12-02 08:48:07,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:07,516 INFO L435 NwaCegarLoop]: 1329 mSDtfsCounter, 1291 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:07,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 2657 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2024-12-02 08:48:07,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1028. [2024-12-02 08:48:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 672 states have (on average 1.212797619047619) internal successors, (815), 710 states have internal predecessors, (815), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:48:07,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1331 transitions. [2024-12-02 08:48:07,606 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1331 transitions. Word has length 121 [2024-12-02 08:48:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:07,607 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1331 transitions. [2024-12-02 08:48:07,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 08:48:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1331 transitions. [2024-12-02 08:48:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 08:48:07,609 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:07,609 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:07,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:48:07,610 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_linux_kernel_rcu_update_lock_bh_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:07,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash 618461630, now seen corresponding path program 1 times [2024-12-02 08:48:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:07,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895705414] [2024-12-02 08:48:07,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:07,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:48:08,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:08,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895705414] [2024-12-02 08:48:08,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895705414] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:08,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:08,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:08,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93855990] [2024-12-02 08:48:08,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:08,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:08,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:08,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:08,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:08,544 INFO L87 Difference]: Start difference. First operand 1028 states and 1331 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 08:48:08,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:08,628 INFO L93 Difference]: Finished difference Result 1028 states and 1331 transitions. [2024-12-02 08:48:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:08,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 127 [2024-12-02 08:48:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:08,632 INFO L225 Difference]: With dead ends: 1028 [2024-12-02 08:48:08,632 INFO L226 Difference]: Without dead ends: 1026 [2024-12-02 08:48:08,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:08,633 INFO L435 NwaCegarLoop]: 1327 mSDtfsCounter, 1288 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:08,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 2653 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:08,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-12-02 08:48:08,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2024-12-02 08:48:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 671 states have (on average 1.2116244411326378) internal successors, (813), 708 states have internal predecessors, (813), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:48:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1329 transitions. [2024-12-02 08:48:08,685 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1329 transitions. Word has length 127 [2024-12-02 08:48:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:08,685 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1329 transitions. [2024-12-02 08:48:08,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 08:48:08,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1329 transitions. [2024-12-02 08:48:08,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 08:48:08,687 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:08,687 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:08,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:48:08,687 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:08,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:08,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1052386765, now seen corresponding path program 1 times [2024-12-02 08:48:08,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:08,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053422149] [2024-12-02 08:48:08,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:08,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-12-02 08:48:09,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:09,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053422149] [2024-12-02 08:48:09,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053422149] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:09,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:09,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:48:09,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293177345] [2024-12-02 08:48:09,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:09,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:48:09,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:09,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:48:09,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:48:09,587 INFO L87 Difference]: Start difference. First operand 1026 states and 1329 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 08:48:09,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:09,651 INFO L93 Difference]: Finished difference Result 2009 states and 2606 transitions. [2024-12-02 08:48:09,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:48:09,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 171 [2024-12-02 08:48:09,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:09,656 INFO L225 Difference]: With dead ends: 2009 [2024-12-02 08:48:09,656 INFO L226 Difference]: Without dead ends: 1022 [2024-12-02 08:48:09,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:48:09,659 INFO L435 NwaCegarLoop]: 1323 mSDtfsCounter, 1283 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:09,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 1323 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2024-12-02 08:48:09,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1022. [2024-12-02 08:48:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 668 states have (on average 1.2095808383233533) internal successors, (808), 704 states have internal predecessors, (808), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:48:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1324 transitions. [2024-12-02 08:48:09,717 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1324 transitions. Word has length 171 [2024-12-02 08:48:09,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:09,718 INFO L471 AbstractCegarLoop]: Abstraction has 1022 states and 1324 transitions. [2024-12-02 08:48:09,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 08:48:09,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1324 transitions. [2024-12-02 08:48:09,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-12-02 08:48:09,720 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:09,721 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:09,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:48:09,721 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_linux_kernel_rcu_update_lock_sched_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:09,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:09,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1813819607, now seen corresponding path program 1 times [2024-12-02 08:48:09,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:09,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659716486] [2024-12-02 08:48:09,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:09,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:48:10,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:10,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659716486] [2024-12-02 08:48:10,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659716486] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:10,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:10,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012253671] [2024-12-02 08:48:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:10,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:10,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:10,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:10,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:10,583 INFO L87 Difference]: Start difference. First operand 1022 states and 1324 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 08:48:10,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:10,670 INFO L93 Difference]: Finished difference Result 1022 states and 1324 transitions. [2024-12-02 08:48:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:10,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 133 [2024-12-02 08:48:10,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:10,675 INFO L225 Difference]: With dead ends: 1022 [2024-12-02 08:48:10,675 INFO L226 Difference]: Without dead ends: 1020 [2024-12-02 08:48:10,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:10,676 INFO L435 NwaCegarLoop]: 1320 mSDtfsCounter, 1280 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:10,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 2639 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2024-12-02 08:48:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1020. [2024-12-02 08:48:10,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 667 states have (on average 1.2083958020989505) internal successors, (806), 702 states have internal predecessors, (806), 259 states have call successors, (259), 79 states have call predecessors, (259), 78 states have return successors, (257), 247 states have call predecessors, (257), 257 states have call successors, (257) [2024-12-02 08:48:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1322 transitions. [2024-12-02 08:48:10,735 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1322 transitions. Word has length 133 [2024-12-02 08:48:10,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:10,735 INFO L471 AbstractCegarLoop]: Abstraction has 1020 states and 1322 transitions. [2024-12-02 08:48:10,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 08:48:10,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1322 transitions. [2024-12-02 08:48:10,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-12-02 08:48:10,738 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:10,738 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:10,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 08:48:10,738 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:10,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:10,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1295508173, now seen corresponding path program 1 times [2024-12-02 08:48:10,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:10,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6577013] [2024-12-02 08:48:10,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:10,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-12-02 08:48:11,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:11,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6577013] [2024-12-02 08:48:11,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6577013] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:11,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:11,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:48:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199768122] [2024-12-02 08:48:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:11,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:48:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:11,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:48:11,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:48:11,816 INFO L87 Difference]: Start difference. First operand 1020 states and 1322 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 08:48:12,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:12,012 INFO L93 Difference]: Finished difference Result 1749 states and 2228 transitions. [2024-12-02 08:48:12,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:48:12,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 167 [2024-12-02 08:48:12,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:12,019 INFO L225 Difference]: With dead ends: 1749 [2024-12-02 08:48:12,019 INFO L226 Difference]: Without dead ends: 1025 [2024-12-02 08:48:12,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:48:12,022 INFO L435 NwaCegarLoop]: 1319 mSDtfsCounter, 0 mSDsluCounter, 5269 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6588 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:12,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6588 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:48:12,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2024-12-02 08:48:12,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1025. [2024-12-02 08:48:12,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 671 states have (on average 1.2071535022354694) internal successors, (810), 706 states have internal predecessors, (810), 259 states have call successors, (259), 79 states have call predecessors, (259), 79 states have return successors, (261), 248 states have call predecessors, (261), 257 states have call successors, (261) [2024-12-02 08:48:12,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1330 transitions. [2024-12-02 08:48:12,127 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1330 transitions. Word has length 167 [2024-12-02 08:48:12,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:12,128 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1330 transitions. [2024-12-02 08:48:12,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 08:48:12,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1330 transitions. [2024-12-02 08:48:12,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 08:48:12,131 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:12,131 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:12,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 08:48:12,131 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:12,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:12,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1873594208, now seen corresponding path program 1 times [2024-12-02 08:48:12,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:12,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714659386] [2024-12-02 08:48:12,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:12,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:48:13,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:13,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714659386] [2024-12-02 08:48:13,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714659386] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:13,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:13,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:13,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317398858] [2024-12-02 08:48:13,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:13,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:13,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:13,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:13,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:13,146 INFO L87 Difference]: Start difference. First operand 1025 states and 1330 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 08:48:13,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:13,245 INFO L93 Difference]: Finished difference Result 1025 states and 1330 transitions. [2024-12-02 08:48:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:13,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 139 [2024-12-02 08:48:13,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:13,249 INFO L225 Difference]: With dead ends: 1025 [2024-12-02 08:48:13,249 INFO L226 Difference]: Without dead ends: 1023 [2024-12-02 08:48:13,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:13,250 INFO L435 NwaCegarLoop]: 1318 mSDtfsCounter, 1277 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:13,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 2635 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:13,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-12-02 08:48:13,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2024-12-02 08:48:13,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 670 states have (on average 1.2059701492537314) internal successors, (808), 704 states have internal predecessors, (808), 259 states have call successors, (259), 79 states have call predecessors, (259), 79 states have return successors, (261), 248 states have call predecessors, (261), 257 states have call successors, (261) [2024-12-02 08:48:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1328 transitions. [2024-12-02 08:48:13,330 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1328 transitions. Word has length 139 [2024-12-02 08:48:13,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:13,330 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1328 transitions. [2024-12-02 08:48:13,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 08:48:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1328 transitions. [2024-12-02 08:48:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 08:48:13,331 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:13,332 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:13,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 08:48:13,332 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_linux_kernel_rcu_srcu_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:13,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1214907471, now seen corresponding path program 1 times [2024-12-02 08:48:13,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:13,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584475443] [2024-12-02 08:48:13,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:48:14,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:14,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584475443] [2024-12-02 08:48:14,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584475443] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:14,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:14,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:14,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019787098] [2024-12-02 08:48:14,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:14,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:14,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:14,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:14,116 INFO L87 Difference]: Start difference. First operand 1023 states and 1328 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 08:48:14,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:14,223 INFO L93 Difference]: Finished difference Result 1023 states and 1328 transitions. [2024-12-02 08:48:14,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:14,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 145 [2024-12-02 08:48:14,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:14,229 INFO L225 Difference]: With dead ends: 1023 [2024-12-02 08:48:14,229 INFO L226 Difference]: Without dead ends: 1021 [2024-12-02 08:48:14,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:14,230 INFO L435 NwaCegarLoop]: 1316 mSDtfsCounter, 1274 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:14,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 2631 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:14,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2024-12-02 08:48:14,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1021. [2024-12-02 08:48:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 669 states have (on average 1.2047832585949179) internal successors, (806), 702 states have internal predecessors, (806), 259 states have call successors, (259), 79 states have call predecessors, (259), 79 states have return successors, (261), 248 states have call predecessors, (261), 257 states have call successors, (261) [2024-12-02 08:48:14,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1326 transitions. [2024-12-02 08:48:14,334 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1326 transitions. Word has length 145 [2024-12-02 08:48:14,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:14,335 INFO L471 AbstractCegarLoop]: Abstraction has 1021 states and 1326 transitions. [2024-12-02 08:48:14,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-12-02 08:48:14,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1326 transitions. [2024-12-02 08:48:14,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 08:48:14,336 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:14,336 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:14,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 08:48:14,336 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_linux_lib_idr_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:14,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:14,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2041401368, now seen corresponding path program 1 times [2024-12-02 08:48:14,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:14,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946439923] [2024-12-02 08:48:14,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:14,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:48:15,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:15,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946439923] [2024-12-02 08:48:15,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946439923] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:15,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:15,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:15,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075798269] [2024-12-02 08:48:15,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:15,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:15,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:15,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:15,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:15,187 INFO L87 Difference]: Start difference. First operand 1021 states and 1326 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 08:48:15,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:15,312 INFO L93 Difference]: Finished difference Result 1021 states and 1326 transitions. [2024-12-02 08:48:15,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:15,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 151 [2024-12-02 08:48:15,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:15,316 INFO L225 Difference]: With dead ends: 1021 [2024-12-02 08:48:15,316 INFO L226 Difference]: Without dead ends: 1019 [2024-12-02 08:48:15,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:15,317 INFO L435 NwaCegarLoop]: 1314 mSDtfsCounter, 1271 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:15,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 2627 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2024-12-02 08:48:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 1019. [2024-12-02 08:48:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 668 states have (on average 1.2035928143712575) internal successors, (804), 700 states have internal predecessors, (804), 259 states have call successors, (259), 79 states have call predecessors, (259), 79 states have return successors, (261), 248 states have call predecessors, (261), 257 states have call successors, (261) [2024-12-02 08:48:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1324 transitions. [2024-12-02 08:48:15,443 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1324 transitions. Word has length 151 [2024-12-02 08:48:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:15,444 INFO L471 AbstractCegarLoop]: Abstraction has 1019 states and 1324 transitions. [2024-12-02 08:48:15,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 08:48:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1324 transitions. [2024-12-02 08:48:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 08:48:15,446 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:15,446 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:15,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 08:48:15,446 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:15,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:15,446 INFO L85 PathProgramCache]: Analyzing trace with hash 825827337, now seen corresponding path program 1 times [2024-12-02 08:48:15,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:15,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948028031] [2024-12-02 08:48:15,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:15,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-12-02 08:48:16,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:16,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948028031] [2024-12-02 08:48:16,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948028031] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:16,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:16,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:48:16,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155542575] [2024-12-02 08:48:16,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:16,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:48:16,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:16,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:48:16,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:16,610 INFO L87 Difference]: Start difference. First operand 1019 states and 1324 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 08:48:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:16,826 INFO L93 Difference]: Finished difference Result 1124 states and 1428 transitions. [2024-12-02 08:48:16,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:48:16,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 183 [2024-12-02 08:48:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:16,830 INFO L225 Difference]: With dead ends: 1124 [2024-12-02 08:48:16,830 INFO L226 Difference]: Without dead ends: 1122 [2024-12-02 08:48:16,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:48:16,831 INFO L435 NwaCegarLoop]: 1349 mSDtfsCounter, 1167 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 4241 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:16,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 4241 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:48:16,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2024-12-02 08:48:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1116. [2024-12-02 08:48:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 733 states have (on average 1.199181446111869) internal successors, (879), 765 states have internal predecessors, (879), 271 states have call successors, (271), 99 states have call predecessors, (271), 99 states have return successors, (273), 260 states have call predecessors, (273), 269 states have call successors, (273) [2024-12-02 08:48:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1423 transitions. [2024-12-02 08:48:16,916 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1423 transitions. Word has length 183 [2024-12-02 08:48:16,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:16,917 INFO L471 AbstractCegarLoop]: Abstraction has 1116 states and 1423 transitions. [2024-12-02 08:48:16,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 08:48:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1423 transitions. [2024-12-02 08:48:16,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 08:48:16,918 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:16,919 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:16,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 08:48:16,919 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:16,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash 443444550, now seen corresponding path program 1 times [2024-12-02 08:48:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:16,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049621518] [2024-12-02 08:48:16,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:16,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:48:17,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:17,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049621518] [2024-12-02 08:48:17,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049621518] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:17,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:17,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:17,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147288495] [2024-12-02 08:48:17,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:17,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:17,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:17,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:17,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:17,913 INFO L87 Difference]: Start difference. First operand 1116 states and 1423 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 08:48:18,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:18,090 INFO L93 Difference]: Finished difference Result 1116 states and 1423 transitions. [2024-12-02 08:48:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:18,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 157 [2024-12-02 08:48:18,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:18,096 INFO L225 Difference]: With dead ends: 1116 [2024-12-02 08:48:18,096 INFO L226 Difference]: Without dead ends: 1114 [2024-12-02 08:48:18,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:18,098 INFO L435 NwaCegarLoop]: 1312 mSDtfsCounter, 1268 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:18,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 2623 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:18,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-12-02 08:48:18,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2024-12-02 08:48:18,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 732 states have (on average 1.1980874316939891) internal successors, (877), 763 states have internal predecessors, (877), 271 states have call successors, (271), 99 states have call predecessors, (271), 99 states have return successors, (273), 260 states have call predecessors, (273), 269 states have call successors, (273) [2024-12-02 08:48:18,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1421 transitions. [2024-12-02 08:48:18,261 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1421 transitions. Word has length 157 [2024-12-02 08:48:18,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:18,262 INFO L471 AbstractCegarLoop]: Abstraction has 1114 states and 1421 transitions. [2024-12-02 08:48:18,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 08:48:18,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1421 transitions. [2024-12-02 08:48:18,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 08:48:18,264 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:18,264 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:18,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 08:48:18,265 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:18,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1776032839, now seen corresponding path program 1 times [2024-12-02 08:48:18,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:18,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328635563] [2024-12-02 08:48:18,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:18,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2024-12-02 08:48:18,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:18,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328635563] [2024-12-02 08:48:18,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328635563] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:18,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:18,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:48:18,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888406009] [2024-12-02 08:48:18,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:18,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:48:18,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:18,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:48:18,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:48:18,970 INFO L87 Difference]: Start difference. First operand 1114 states and 1421 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 08:48:19,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:19,078 INFO L93 Difference]: Finished difference Result 2074 states and 2617 transitions. [2024-12-02 08:48:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:48:19,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 203 [2024-12-02 08:48:19,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:19,084 INFO L225 Difference]: With dead ends: 2074 [2024-12-02 08:48:19,084 INFO L226 Difference]: Without dead ends: 1110 [2024-12-02 08:48:19,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:48:19,087 INFO L435 NwaCegarLoop]: 1308 mSDtfsCounter, 1293 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:19,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 1308 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2024-12-02 08:48:19,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2024-12-02 08:48:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 729 states have (on average 1.196159122085048) internal successors, (872), 759 states have internal predecessors, (872), 271 states have call successors, (271), 99 states have call predecessors, (271), 99 states have return successors, (273), 260 states have call predecessors, (273), 269 states have call successors, (273) [2024-12-02 08:48:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1416 transitions. [2024-12-02 08:48:19,169 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1416 transitions. Word has length 203 [2024-12-02 08:48:19,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:19,169 INFO L471 AbstractCegarLoop]: Abstraction has 1110 states and 1416 transitions. [2024-12-02 08:48:19,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 08:48:19,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1416 transitions. [2024-12-02 08:48:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 08:48:19,170 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:19,170 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:19,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 08:48:19,171 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:19,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:19,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1230025084, now seen corresponding path program 1 times [2024-12-02 08:48:19,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:19,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611535472] [2024-12-02 08:48:19,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:19,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:48:19,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:19,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611535472] [2024-12-02 08:48:19,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611535472] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:19,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:19,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:19,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201732099] [2024-12-02 08:48:19,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:19,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:19,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:19,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:19,907 INFO L87 Difference]: Start difference. First operand 1110 states and 1416 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 08:48:20,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:20,019 INFO L93 Difference]: Finished difference Result 1110 states and 1416 transitions. [2024-12-02 08:48:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:20,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 163 [2024-12-02 08:48:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:20,022 INFO L225 Difference]: With dead ends: 1110 [2024-12-02 08:48:20,022 INFO L226 Difference]: Without dead ends: 1108 [2024-12-02 08:48:20,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:20,023 INFO L435 NwaCegarLoop]: 1305 mSDtfsCounter, 1260 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:20,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 2609 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:20,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2024-12-02 08:48:20,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2024-12-02 08:48:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 728 states have (on average 1.195054945054945) internal successors, (870), 757 states have internal predecessors, (870), 271 states have call successors, (271), 99 states have call predecessors, (271), 99 states have return successors, (273), 260 states have call predecessors, (273), 269 states have call successors, (273) [2024-12-02 08:48:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1414 transitions. [2024-12-02 08:48:20,157 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1414 transitions. Word has length 163 [2024-12-02 08:48:20,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:20,158 INFO L471 AbstractCegarLoop]: Abstraction has 1108 states and 1414 transitions. [2024-12-02 08:48:20,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 08:48:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1414 transitions. [2024-12-02 08:48:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-12-02 08:48:20,160 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:20,160 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:20,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 08:48:20,160 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:20,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:20,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1477779784, now seen corresponding path program 1 times [2024-12-02 08:48:20,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:20,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375011348] [2024-12-02 08:48:20,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:20,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:21,145 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2024-12-02 08:48:21,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:21,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375011348] [2024-12-02 08:48:21,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375011348] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:48:21,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800339114] [2024-12-02 08:48:21,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:21,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:48:21,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:48:21,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:48:21,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:48:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:22,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 08:48:22,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:48:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-12-02 08:48:23,229 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:48:23,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800339114] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:23,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:48:23,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 08:48:23,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136225820] [2024-12-02 08:48:23,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:23,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:48:23,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:23,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:48:23,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:48:23,231 INFO L87 Difference]: Start difference. First operand 1108 states and 1414 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 08:48:23,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:23,360 INFO L93 Difference]: Finished difference Result 2115 states and 2669 transitions. [2024-12-02 08:48:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:48:23,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 209 [2024-12-02 08:48:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:23,366 INFO L225 Difference]: With dead ends: 2115 [2024-12-02 08:48:23,366 INFO L226 Difference]: Without dead ends: 1160 [2024-12-02 08:48:23,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:48:23,368 INFO L435 NwaCegarLoop]: 1366 mSDtfsCounter, 1236 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:23,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 1433 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:23,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2024-12-02 08:48:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1157. [2024-12-02 08:48:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 757 states have (on average 1.1889035667107002) internal successors, (900), 789 states have internal predecessors, (900), 286 states have call successors, (286), 105 states have call predecessors, (286), 105 states have return successors, (288), 273 states have call predecessors, (288), 284 states have call successors, (288) [2024-12-02 08:48:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1474 transitions. [2024-12-02 08:48:23,472 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1474 transitions. Word has length 209 [2024-12-02 08:48:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:23,472 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 1474 transitions. [2024-12-02 08:48:23,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 08:48:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1474 transitions. [2024-12-02 08:48:23,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 08:48:23,474 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:23,474 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:23,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:48:23,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 08:48:23,675 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_linux_net_sock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:23,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:23,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1145443227, now seen corresponding path program 1 times [2024-12-02 08:48:23,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:23,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586360060] [2024-12-02 08:48:23,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:23,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:48:24,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:24,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586360060] [2024-12-02 08:48:24,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586360060] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:24,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:24,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:24,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051857646] [2024-12-02 08:48:24,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:24,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:24,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:24,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:24,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:24,443 INFO L87 Difference]: Start difference. First operand 1157 states and 1474 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 08:48:24,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:24,593 INFO L93 Difference]: Finished difference Result 1157 states and 1474 transitions. [2024-12-02 08:48:24,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:24,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 169 [2024-12-02 08:48:24,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:24,598 INFO L225 Difference]: With dead ends: 1157 [2024-12-02 08:48:24,598 INFO L226 Difference]: Without dead ends: 1155 [2024-12-02 08:48:24,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:24,599 INFO L435 NwaCegarLoop]: 1298 mSDtfsCounter, 1252 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:24,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 2595 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:24,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2024-12-02 08:48:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1155. [2024-12-02 08:48:24,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 756 states have (on average 1.187830687830688) internal successors, (898), 787 states have internal predecessors, (898), 286 states have call successors, (286), 105 states have call predecessors, (286), 105 states have return successors, (288), 273 states have call predecessors, (288), 284 states have call successors, (288) [2024-12-02 08:48:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1472 transitions. [2024-12-02 08:48:24,695 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1472 transitions. Word has length 169 [2024-12-02 08:48:24,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:24,695 INFO L471 AbstractCegarLoop]: Abstraction has 1155 states and 1472 transitions. [2024-12-02 08:48:24,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 08:48:24,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1472 transitions. [2024-12-02 08:48:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-12-02 08:48:24,697 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:24,697 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:24,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 08:48:24,697 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:24,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:24,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1195172577, now seen corresponding path program 1 times [2024-12-02 08:48:24,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:24,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443823207] [2024-12-02 08:48:24,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:24,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-12-02 08:48:25,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:25,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443823207] [2024-12-02 08:48:25,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443823207] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:25,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:25,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:48:25,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258454105] [2024-12-02 08:48:25,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:25,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:48:25,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:25,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:48:25,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:25,840 INFO L87 Difference]: Start difference. First operand 1155 states and 1472 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 08:48:29,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:48:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:30,107 INFO L93 Difference]: Finished difference Result 1167 states and 1480 transitions. [2024-12-02 08:48:30,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:48:30,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 201 [2024-12-02 08:48:30,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:30,114 INFO L225 Difference]: With dead ends: 1167 [2024-12-02 08:48:30,114 INFO L226 Difference]: Without dead ends: 1165 [2024-12-02 08:48:30,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:48:30,115 INFO L435 NwaCegarLoop]: 1362 mSDtfsCounter, 196 mSDsluCounter, 3917 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 5279 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:30,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 5279 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-12-02 08:48:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2024-12-02 08:48:30,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1159. [2024-12-02 08:48:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 759 states have (on average 1.1870882740447959) internal successors, (901), 790 states have internal predecessors, (901), 286 states have call successors, (286), 106 states have call predecessors, (286), 106 states have return successors, (288), 273 states have call predecessors, (288), 284 states have call successors, (288) [2024-12-02 08:48:30,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1475 transitions. [2024-12-02 08:48:30,256 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1475 transitions. Word has length 201 [2024-12-02 08:48:30,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:30,256 INFO L471 AbstractCegarLoop]: Abstraction has 1159 states and 1475 transitions. [2024-12-02 08:48:30,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 08:48:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1475 transitions. [2024-12-02 08:48:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-12-02 08:48:30,258 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:30,259 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:30,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 08:48:30,259 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:30,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:30,259 INFO L85 PathProgramCache]: Analyzing trace with hash -733201368, now seen corresponding path program 1 times [2024-12-02 08:48:30,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:30,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474120824] [2024-12-02 08:48:30,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:30,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-12-02 08:48:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474120824] [2024-12-02 08:48:31,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474120824] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:31,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:31,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:48:31,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473287747] [2024-12-02 08:48:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:31,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:48:31,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:31,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:48:31,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:31,672 INFO L87 Difference]: Start difference. First operand 1159 states and 1475 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 08:48:31,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:31,959 INFO L93 Difference]: Finished difference Result 1891 states and 2373 transitions. [2024-12-02 08:48:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:48:31,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 201 [2024-12-02 08:48:31,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:31,965 INFO L225 Difference]: With dead ends: 1891 [2024-12-02 08:48:31,965 INFO L226 Difference]: Without dead ends: 1889 [2024-12-02 08:48:31,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:48:31,966 INFO L435 NwaCegarLoop]: 1672 mSDtfsCounter, 1224 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 5858 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:31,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 5858 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:48:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2024-12-02 08:48:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1829. [2024-12-02 08:48:32,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1222 states have (on average 1.193126022913257) internal successors, (1458), 1269 states have internal predecessors, (1458), 421 states have call successors, (421), 177 states have call predecessors, (421), 178 states have return successors, (429), 395 states have call predecessors, (429), 419 states have call successors, (429) [2024-12-02 08:48:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2308 transitions. [2024-12-02 08:48:32,120 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2308 transitions. Word has length 201 [2024-12-02 08:48:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:32,120 INFO L471 AbstractCegarLoop]: Abstraction has 1829 states and 2308 transitions. [2024-12-02 08:48:32,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 08:48:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2308 transitions. [2024-12-02 08:48:32,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 08:48:32,122 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:32,122 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:32,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 08:48:32,122 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:32,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1531622797, now seen corresponding path program 1 times [2024-12-02 08:48:32,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:32,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887196502] [2024-12-02 08:48:32,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:32,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:48:32,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:32,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887196502] [2024-12-02 08:48:32,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887196502] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:32,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:32,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:32,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005883976] [2024-12-02 08:48:32,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:32,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:32,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:32,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:32,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:32,995 INFO L87 Difference]: Start difference. First operand 1829 states and 2308 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 08:48:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:33,186 INFO L93 Difference]: Finished difference Result 1829 states and 2308 transitions. [2024-12-02 08:48:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:33,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 175 [2024-12-02 08:48:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:33,194 INFO L225 Difference]: With dead ends: 1829 [2024-12-02 08:48:33,194 INFO L226 Difference]: Without dead ends: 1827 [2024-12-02 08:48:33,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:33,195 INFO L435 NwaCegarLoop]: 1296 mSDtfsCounter, 1249 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:33,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 2591 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:33,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2024-12-02 08:48:33,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1827. [2024-12-02 08:48:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1221 states have (on average 1.1916461916461916) internal successors, (1455), 1267 states have internal predecessors, (1455), 421 states have call successors, (421), 177 states have call predecessors, (421), 178 states have return successors, (429), 395 states have call predecessors, (429), 419 states have call successors, (429) [2024-12-02 08:48:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2305 transitions. [2024-12-02 08:48:33,384 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2305 transitions. Word has length 175 [2024-12-02 08:48:33,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:33,384 INFO L471 AbstractCegarLoop]: Abstraction has 1827 states and 2305 transitions. [2024-12-02 08:48:33,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 08:48:33,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2305 transitions. [2024-12-02 08:48:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-12-02 08:48:33,385 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:33,385 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:33,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 08:48:33,386 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:33,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:33,386 INFO L85 PathProgramCache]: Analyzing trace with hash -461268449, now seen corresponding path program 1 times [2024-12-02 08:48:33,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:33,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871502070] [2024-12-02 08:48:33,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:33,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2024-12-02 08:48:34,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:34,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871502070] [2024-12-02 08:48:34,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871502070] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:34,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:34,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:48:34,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726609732] [2024-12-02 08:48:34,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:34,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:48:34,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:34,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:48:34,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:48:34,859 INFO L87 Difference]: Start difference. First operand 1827 states and 2305 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 5 states have call predecessors, (26), 3 states have call successors, (26) [2024-12-02 08:48:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:35,394 INFO L93 Difference]: Finished difference Result 3566 states and 4494 transitions. [2024-12-02 08:48:35,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:48:35,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 5 states have call predecessors, (26), 3 states have call successors, (26) Word has length 225 [2024-12-02 08:48:35,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:35,403 INFO L225 Difference]: With dead ends: 3566 [2024-12-02 08:48:35,403 INFO L226 Difference]: Without dead ends: 1834 [2024-12-02 08:48:35,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:48:35,409 INFO L435 NwaCegarLoop]: 1296 mSDtfsCounter, 0 mSDsluCounter, 7749 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9045 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:35,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9045 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:48:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2024-12-02 08:48:35,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1834. [2024-12-02 08:48:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1226 states have (on average 1.1908646003262642) internal successors, (1460), 1271 states have internal predecessors, (1460), 422 states have call successors, (422), 177 states have call predecessors, (422), 179 states have return successors, (434), 398 states have call predecessors, (434), 420 states have call successors, (434) [2024-12-02 08:48:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2316 transitions. [2024-12-02 08:48:35,612 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2316 transitions. Word has length 225 [2024-12-02 08:48:35,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:35,613 INFO L471 AbstractCegarLoop]: Abstraction has 1834 states and 2316 transitions. [2024-12-02 08:48:35,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 5 states have call predecessors, (26), 3 states have call successors, (26) [2024-12-02 08:48:35,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2316 transitions. [2024-12-02 08:48:35,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 08:48:35,615 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:35,615 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:35,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 08:48:35,616 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:35,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash -932269897, now seen corresponding path program 1 times [2024-12-02 08:48:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:35,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016638202] [2024-12-02 08:48:35,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:48:36,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:36,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016638202] [2024-12-02 08:48:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016638202] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:36,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:36,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:36,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24190790] [2024-12-02 08:48:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:36,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:36,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:36,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:36,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:36,841 INFO L87 Difference]: Start difference. First operand 1834 states and 2316 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:48:37,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:37,050 INFO L93 Difference]: Finished difference Result 1834 states and 2316 transitions. [2024-12-02 08:48:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:37,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 181 [2024-12-02 08:48:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:37,057 INFO L225 Difference]: With dead ends: 1834 [2024-12-02 08:48:37,057 INFO L226 Difference]: Without dead ends: 1832 [2024-12-02 08:48:37,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:37,058 INFO L435 NwaCegarLoop]: 1294 mSDtfsCounter, 1246 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:37,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 2587 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2024-12-02 08:48:37,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1832. [2024-12-02 08:48:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1225 states have (on average 1.1893877551020409) internal successors, (1457), 1269 states have internal predecessors, (1457), 422 states have call successors, (422), 177 states have call predecessors, (422), 179 states have return successors, (434), 398 states have call predecessors, (434), 420 states have call successors, (434) [2024-12-02 08:48:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2313 transitions. [2024-12-02 08:48:37,260 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2313 transitions. Word has length 181 [2024-12-02 08:48:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:37,260 INFO L471 AbstractCegarLoop]: Abstraction has 1832 states and 2313 transitions. [2024-12-02 08:48:37,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 08:48:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2313 transitions. [2024-12-02 08:48:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-12-02 08:48:37,262 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:37,262 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:37,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 08:48:37,262 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:37,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:37,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1426695689, now seen corresponding path program 1 times [2024-12-02 08:48:37,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:37,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452597915] [2024-12-02 08:48:37,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:37,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2024-12-02 08:48:40,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:40,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452597915] [2024-12-02 08:48:40,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452597915] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:40,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:40,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 08:48:40,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305458280] [2024-12-02 08:48:40,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:40,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 08:48:40,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:40,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 08:48:40,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:48:40,439 INFO L87 Difference]: Start difference. First operand 1832 states and 2313 transitions. Second operand has 14 states, 13 states have (on average 6.615384615384615) internal successors, (86), 11 states have internal predecessors, (86), 6 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (29), 7 states have call predecessors, (29), 5 states have call successors, (29) [2024-12-02 08:48:43,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:43,012 INFO L93 Difference]: Finished difference Result 3488 states and 4375 transitions. [2024-12-02 08:48:43,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 08:48:43,013 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.615384615384615) internal successors, (86), 11 states have internal predecessors, (86), 6 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (29), 7 states have call predecessors, (29), 5 states have call successors, (29) Word has length 241 [2024-12-02 08:48:43,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:43,019 INFO L225 Difference]: With dead ends: 3488 [2024-12-02 08:48:43,019 INFO L226 Difference]: Without dead ends: 1862 [2024-12-02 08:48:43,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:48:43,024 INFO L435 NwaCegarLoop]: 1258 mSDtfsCounter, 83 mSDsluCounter, 14909 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 16167 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:43,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 16167 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 08:48:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2024-12-02 08:48:43,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1850. [2024-12-02 08:48:43,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1234 states have (on average 1.1880064829821717) internal successors, (1466), 1279 states have internal predecessors, (1466), 429 states have call successors, (429), 178 states have call predecessors, (429), 181 states have return successors, (442), 405 states have call predecessors, (442), 427 states have call successors, (442) [2024-12-02 08:48:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 2337 transitions. [2024-12-02 08:48:43,206 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 2337 transitions. Word has length 241 [2024-12-02 08:48:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:43,206 INFO L471 AbstractCegarLoop]: Abstraction has 1850 states and 2337 transitions. [2024-12-02 08:48:43,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.615384615384615) internal successors, (86), 11 states have internal predecessors, (86), 6 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (29), 7 states have call predecessors, (29), 5 states have call successors, (29) [2024-12-02 08:48:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 2337 transitions. [2024-12-02 08:48:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-02 08:48:43,208 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:43,209 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:43,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 08:48:43,209 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_linux_usb_urb_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:43,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:43,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1256404410, now seen corresponding path program 1 times [2024-12-02 08:48:43,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:43,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297161246] [2024-12-02 08:48:43,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:43,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 08:48:44,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:44,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297161246] [2024-12-02 08:48:44,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297161246] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:44,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:44,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:48:44,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720940276] [2024-12-02 08:48:44,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:44,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:48:44,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:44,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:48:44,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:48:44,194 INFO L87 Difference]: Start difference. First operand 1850 states and 2337 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-12-02 08:48:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:44,607 INFO L93 Difference]: Finished difference Result 3571 states and 4505 transitions. [2024-12-02 08:48:44,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 187 [2024-12-02 08:48:44,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:44,617 INFO L225 Difference]: With dead ends: 3571 [2024-12-02 08:48:44,617 INFO L226 Difference]: Without dead ends: 3288 [2024-12-02 08:48:44,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:44,619 INFO L435 NwaCegarLoop]: 1361 mSDtfsCounter, 1241 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 3906 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:44,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 3906 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:48:44,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2024-12-02 08:48:44,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 3269. [2024-12-02 08:48:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 2195 states have (on average 1.2018223234624146) internal successors, (2638), 2267 states have internal predecessors, (2638), 752 states have call successors, (752), 310 states have call predecessors, (752), 316 states have return successors, (788), 712 states have call predecessors, (788), 750 states have call successors, (788) [2024-12-02 08:48:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 4178 transitions. [2024-12-02 08:48:44,949 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 4178 transitions. Word has length 187 [2024-12-02 08:48:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:44,949 INFO L471 AbstractCegarLoop]: Abstraction has 3269 states and 4178 transitions. [2024-12-02 08:48:44,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-12-02 08:48:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 4178 transitions. [2024-12-02 08:48:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-12-02 08:48:44,951 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:44,951 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:44,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 08:48:44,951 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:44,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1487519286, now seen corresponding path program 1 times [2024-12-02 08:48:44,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:44,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275359654] [2024-12-02 08:48:44,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:44,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2024-12-02 08:48:46,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:46,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275359654] [2024-12-02 08:48:46,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275359654] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:48:46,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496850645] [2024-12-02 08:48:46,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:46,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:48:46,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:48:46,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:48:46,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:48:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:48,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 08:48:48,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:48:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-12-02 08:48:48,465 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:48:48,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496850645] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:48,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:48:48,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2024-12-02 08:48:48,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021356941] [2024-12-02 08:48:48,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:48,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:48:48,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:48,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:48:48,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:48:48,466 INFO L87 Difference]: Start difference. First operand 3269 states and 4178 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2024-12-02 08:48:49,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:49,262 INFO L93 Difference]: Finished difference Result 6461 states and 8248 transitions. [2024-12-02 08:48:49,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:48:49,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 245 [2024-12-02 08:48:49,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:49,273 INFO L225 Difference]: With dead ends: 6461 [2024-12-02 08:48:49,274 INFO L226 Difference]: Without dead ends: 3237 [2024-12-02 08:48:49,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:48:49,281 INFO L435 NwaCegarLoop]: 1274 mSDtfsCounter, 2 mSDsluCounter, 5050 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6324 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:49,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6324 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 08:48:49,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3237 states. [2024-12-02 08:48:49,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3237 to 3237. [2024-12-02 08:48:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 2178 states have (on average 1.202020202020202) internal successors, (2618), 2247 states have internal predecessors, (2618), 740 states have call successors, (740), 307 states have call predecessors, (740), 313 states have return successors, (776), 701 states have call predecessors, (776), 738 states have call successors, (776) [2024-12-02 08:48:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4134 transitions. [2024-12-02 08:48:49,649 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4134 transitions. Word has length 245 [2024-12-02 08:48:49,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:49,649 INFO L471 AbstractCegarLoop]: Abstraction has 3237 states and 4134 transitions. [2024-12-02 08:48:49,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2024-12-02 08:48:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4134 transitions. [2024-12-02 08:48:49,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-12-02 08:48:49,651 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:49,651 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:49,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:48:49,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 08:48:49,852 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:49,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1005312140, now seen corresponding path program 1 times [2024-12-02 08:48:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:49,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495817258] [2024-12-02 08:48:49,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:49,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 6 proven. 61 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-12-02 08:48:51,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:51,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495817258] [2024-12-02 08:48:51,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495817258] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:48:51,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119279064] [2024-12-02 08:48:51,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:51,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:48:51,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:48:51,885 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:48:51,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:48:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:54,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 2784 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 08:48:54,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:48:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 219 proven. 3 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2024-12-02 08:48:54,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:48:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-12-02 08:48:55,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119279064] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:48:55,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:48:55,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2024-12-02 08:48:55,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280625366] [2024-12-02 08:48:55,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:48:55,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 08:48:55,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:55,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 08:48:55,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:48:55,628 INFO L87 Difference]: Start difference. First operand 3237 states and 4134 transitions. Second operand has 15 states, 13 states have (on average 12.076923076923077) internal successors, (157), 13 states have internal predecessors, (157), 6 states have call successors, (61), 2 states have call predecessors, (61), 5 states have return successors, (61), 6 states have call predecessors, (61), 6 states have call successors, (61) [2024-12-02 08:48:56,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:56,590 INFO L93 Difference]: Finished difference Result 6432 states and 8216 transitions. [2024-12-02 08:48:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 08:48:56,590 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 12.076923076923077) internal successors, (157), 13 states have internal predecessors, (157), 6 states have call successors, (61), 2 states have call predecessors, (61), 5 states have return successors, (61), 6 states have call predecessors, (61), 6 states have call successors, (61) Word has length 245 [2024-12-02 08:48:56,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:56,601 INFO L225 Difference]: With dead ends: 6432 [2024-12-02 08:48:56,601 INFO L226 Difference]: Without dead ends: 3237 [2024-12-02 08:48:56,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 481 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:48:56,608 INFO L435 NwaCegarLoop]: 1272 mSDtfsCounter, 119 mSDsluCounter, 9801 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 11073 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:56,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 11073 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 08:48:56,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3237 states. [2024-12-02 08:48:57,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3237 to 3237. [2024-12-02 08:48:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 2178 states have (on average 1.201561065197429) internal successors, (2617), 2246 states have internal predecessors, (2617), 740 states have call successors, (740), 307 states have call predecessors, (740), 313 states have return successors, (776), 701 states have call predecessors, (776), 738 states have call successors, (776) [2024-12-02 08:48:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4133 transitions. [2024-12-02 08:48:57,036 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4133 transitions. Word has length 245 [2024-12-02 08:48:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:57,036 INFO L471 AbstractCegarLoop]: Abstraction has 3237 states and 4133 transitions. [2024-12-02 08:48:57,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 12.076923076923077) internal successors, (157), 13 states have internal predecessors, (157), 6 states have call successors, (61), 2 states have call predecessors, (61), 5 states have return successors, (61), 6 states have call predecessors, (61), 6 states have call successors, (61) [2024-12-02 08:48:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4133 transitions. [2024-12-02 08:48:57,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-12-02 08:48:57,039 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:57,039 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:48:57,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 08:48:57,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:48:57,239 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:48:57,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:57,240 INFO L85 PathProgramCache]: Analyzing trace with hash 117465156, now seen corresponding path program 1 times [2024-12-02 08:48:57,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:57,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917435540] [2024-12-02 08:48:57,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:57,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-12-02 08:48:58,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:58,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917435540] [2024-12-02 08:48:58,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917435540] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:58,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:58,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:48:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368823140] [2024-12-02 08:48:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:58,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:48:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:58,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:48:58,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:58,290 INFO L87 Difference]: Start difference. First operand 3237 states and 4133 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 08:49:02,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:49:02,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:49:02,885 INFO L93 Difference]: Finished difference Result 3338 states and 4246 transitions. [2024-12-02 08:49:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:49:02,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) Word has length 238 [2024-12-02 08:49:02,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:49:02,899 INFO L225 Difference]: With dead ends: 3338 [2024-12-02 08:49:02,899 INFO L226 Difference]: Without dead ends: 3336 [2024-12-02 08:49:02,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:49:02,901 INFO L435 NwaCegarLoop]: 1778 mSDtfsCounter, 842 mSDsluCounter, 4813 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 6591 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:49:02,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 6591 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-12-02 08:49:02,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2024-12-02 08:49:03,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 3323. [2024-12-02 08:49:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3323 states, 2238 states have (on average 1.1970509383378016) internal successors, (2679), 2296 states have internal predecessors, (2679), 758 states have call successors, (758), 319 states have call predecessors, (758), 321 states have return successors, (794), 725 states have call predecessors, (794), 756 states have call successors, (794) [2024-12-02 08:49:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3323 states to 3323 states and 4231 transitions. [2024-12-02 08:49:03,412 INFO L78 Accepts]: Start accepts. Automaton has 3323 states and 4231 transitions. Word has length 238 [2024-12-02 08:49:03,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:49:03,412 INFO L471 AbstractCegarLoop]: Abstraction has 3323 states and 4231 transitions. [2024-12-02 08:49:03,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 08:49:03,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3323 states and 4231 transitions. [2024-12-02 08:49:03,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-12-02 08:49:03,415 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:49:03,416 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:49:03,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 08:49:03,416 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:49:03,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:49:03,416 INFO L85 PathProgramCache]: Analyzing trace with hash -388093469, now seen corresponding path program 1 times [2024-12-02 08:49:03,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:49:03,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364249109] [2024-12-02 08:49:03,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:49:03,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:49:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:49:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-12-02 08:49:04,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:49:04,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364249109] [2024-12-02 08:49:04,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364249109] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:49:04,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:49:04,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:49:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097359436] [2024-12-02 08:49:04,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:49:04,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:49:04,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:49:04,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:49:04,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:49:04,548 INFO L87 Difference]: Start difference. First operand 3323 states and 4231 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 08:49:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:49:04,957 INFO L93 Difference]: Finished difference Result 5908 states and 7464 transitions. [2024-12-02 08:49:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:49:04,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) Word has length 238 [2024-12-02 08:49:04,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:49:04,973 INFO L225 Difference]: With dead ends: 5908 [2024-12-02 08:49:04,973 INFO L226 Difference]: Without dead ends: 3225 [2024-12-02 08:49:04,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:49:04,980 INFO L435 NwaCegarLoop]: 1296 mSDtfsCounter, 0 mSDsluCounter, 5176 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6472 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:49:04,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6472 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:49:04,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3225 states. [2024-12-02 08:49:05,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3225 to 3225. [2024-12-02 08:49:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3225 states, 2174 states have (on average 1.1927322907083717) internal successors, (2593), 2230 states have internal predecessors, (2593), 736 states have call successors, (736), 301 states have call predecessors, (736), 309 states have return successors, (780), 711 states have call predecessors, (780), 734 states have call successors, (780) [2024-12-02 08:49:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4109 transitions. [2024-12-02 08:49:05,306 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4109 transitions. Word has length 238 [2024-12-02 08:49:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:49:05,307 INFO L471 AbstractCegarLoop]: Abstraction has 3225 states and 4109 transitions. [2024-12-02 08:49:05,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 08:49:05,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4109 transitions. [2024-12-02 08:49:05,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-12-02 08:49:05,308 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:49:05,308 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:49:05,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 08:49:05,308 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:49:05,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:49:05,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1611916911, now seen corresponding path program 1 times [2024-12-02 08:49:05,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:49:05,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642038241] [2024-12-02 08:49:05,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:49:05,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:49:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:49:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 19 proven. 48 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-12-02 08:49:07,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:49:07,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642038241] [2024-12-02 08:49:07,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642038241] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:49:07,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100776707] [2024-12-02 08:49:07,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:49:07,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:49:07,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:49:07,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:49:07,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:49:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:49:09,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 2802 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-12-02 08:49:09,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:49:09,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 08:49:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2024-12-02 08:49:10,485 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:49:10,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100776707] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:49:10,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:49:10,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2024-12-02 08:49:10,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881600982] [2024-12-02 08:49:10,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:49:10,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:49:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:49:10,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:49:10,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:49:10,487 INFO L87 Difference]: Start difference. First operand 3225 states and 4109 transitions. Second operand has 11 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2024-12-02 08:49:14,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:49:18,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:49:22,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:49:26,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:49:30,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:49:34,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:49:38,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:49:42,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:49:48,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:49:53,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:49:57,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:50:02,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:50:06,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:50:12,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:50:29,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:50:34,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:50:38,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:50:46,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:50:46,985 INFO L93 Difference]: Finished difference Result 9203 states and 11732 transitions. [2024-12-02 08:50:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 08:50:46,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 249 [2024-12-02 08:50:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:50:47,007 INFO L225 Difference]: With dead ends: 9203 [2024-12-02 08:50:47,008 INFO L226 Difference]: Without dead ends: 6218 [2024-12-02 08:50:47,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2024-12-02 08:50:47,019 INFO L435 NwaCegarLoop]: 1405 mSDtfsCounter, 1169 mSDsluCounter, 5813 mSDsCounter, 0 mSdLazyCounter, 9743 mSolverCounterSat, 411 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 7218 SdHoareTripleChecker+Invalid, 10170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 9743 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:50:47,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 7218 Invalid, 10170 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [411 Valid, 9743 Invalid, 16 Unknown, 0 Unchecked, 94.5s Time] [2024-12-02 08:50:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2024-12-02 08:50:47,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 5695. [2024-12-02 08:50:47,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5695 states, 3846 states have (on average 1.204108164326573) internal successors, (4631), 3953 states have internal predecessors, (4631), 1288 states have call successors, (1288), 525 states have call predecessors, (1288), 555 states have return successors, (1417), 1246 states have call predecessors, (1417), 1286 states have call successors, (1417) [2024-12-02 08:50:47,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5695 states to 5695 states and 7336 transitions. [2024-12-02 08:50:47,945 INFO L78 Accepts]: Start accepts. Automaton has 5695 states and 7336 transitions. Word has length 249 [2024-12-02 08:50:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:50:47,945 INFO L471 AbstractCegarLoop]: Abstraction has 5695 states and 7336 transitions. [2024-12-02 08:50:47,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2024-12-02 08:50:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5695 states and 7336 transitions. [2024-12-02 08:50:47,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-12-02 08:50:47,947 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:50:47,947 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:50:47,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 08:50:48,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 08:50:48,148 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:50:48,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:50:48,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2004943921, now seen corresponding path program 1 times [2024-12-02 08:50:48,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:50:48,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254278571] [2024-12-02 08:50:48,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:50:48,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:50:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:50:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2024-12-02 08:50:52,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:50:52,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254278571] [2024-12-02 08:50:52,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254278571] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:50:52,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:50:52,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 08:50:52,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795171214] [2024-12-02 08:50:52,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:50:52,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 08:50:52,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:50:52,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 08:50:52,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:50:52,386 INFO L87 Difference]: Start difference. First operand 5695 states and 7336 transitions. Second operand has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 12 states have internal predecessors, (92), 7 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) [2024-12-02 08:50:56,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:51:00,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:51:04,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:51:08,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:51:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:51:33,918 INFO L93 Difference]: Finished difference Result 8630 states and 11090 transitions. [2024-12-02 08:51:33,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 08:51:33,918 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 12 states have internal predecessors, (92), 7 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) Word has length 249 [2024-12-02 08:51:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:51:33,936 INFO L225 Difference]: With dead ends: 8630 [2024-12-02 08:51:33,936 INFO L226 Difference]: Without dead ends: 5882 [2024-12-02 08:51:33,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-12-02 08:51:33,944 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 367 mSDsluCounter, 9874 mSDsCounter, 0 mSdLazyCounter, 8298 mSolverCounterSat, 270 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 10822 SdHoareTripleChecker+Invalid, 8572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 8298 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:51:33,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 10822 Invalid, 8572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [270 Valid, 8298 Invalid, 4 Unknown, 0 Unchecked, 39.8s Time] [2024-12-02 08:51:33,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2024-12-02 08:51:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 5754. [2024-12-02 08:51:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5754 states, 3876 states have (on average 1.2025283797729618) internal successors, (4661), 3983 states have internal predecessors, (4661), 1312 states have call successors, (1312), 527 states have call predecessors, (1312), 560 states have return successors, (1451), 1273 states have call predecessors, (1451), 1310 states have call successors, (1451) [2024-12-02 08:51:34,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5754 states to 5754 states and 7424 transitions. [2024-12-02 08:51:34,770 INFO L78 Accepts]: Start accepts. Automaton has 5754 states and 7424 transitions. Word has length 249 [2024-12-02 08:51:34,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:51:34,770 INFO L471 AbstractCegarLoop]: Abstraction has 5754 states and 7424 transitions. [2024-12-02 08:51:34,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 12 states have internal predecessors, (92), 7 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) [2024-12-02 08:51:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5754 states and 7424 transitions. [2024-12-02 08:51:34,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-12-02 08:51:34,772 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:51:34,772 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:51:34,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 08:51:34,772 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:51:34,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:51:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1859474376, now seen corresponding path program 1 times [2024-12-02 08:51:34,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:51:34,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499170546] [2024-12-02 08:51:34,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:51:34,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:51:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:51:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2024-12-02 08:51:37,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:51:37,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499170546] [2024-12-02 08:51:37,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499170546] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:51:37,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:51:37,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 08:51:37,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195883309] [2024-12-02 08:51:37,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:51:37,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 08:51:37,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:51:37,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 08:51:37,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2024-12-02 08:51:37,968 INFO L87 Difference]: Start difference. First operand 5754 states and 7424 transitions. Second operand has 17 states, 16 states have (on average 5.8125) internal successors, (93), 13 states have internal predecessors, (93), 7 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) [2024-12-02 08:51:41,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:51:46,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:51:50,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:51:54,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:51:58,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:52:26,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:26,553 INFO L93 Difference]: Finished difference Result 11100 states and 14269 transitions. [2024-12-02 08:52:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 08:52:26,553 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.8125) internal successors, (93), 13 states have internal predecessors, (93), 7 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) Word has length 250 [2024-12-02 08:52:26,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:26,568 INFO L225 Difference]: With dead ends: 11100 [2024-12-02 08:52:26,568 INFO L226 Difference]: Without dead ends: 5882 [2024-12-02 08:52:26,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2024-12-02 08:52:26,578 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 421 mSDsluCounter, 8916 mSDsCounter, 0 mSdLazyCounter, 9424 mSolverCounterSat, 296 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 9853 SdHoareTripleChecker+Invalid, 9725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 9424 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:52:26,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 9853 Invalid, 9725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [296 Valid, 9424 Invalid, 5 Unknown, 0 Unchecked, 47.0s Time] [2024-12-02 08:52:26,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2024-12-02 08:52:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 5706. [2024-12-02 08:52:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5706 states, 3848 states have (on average 1.2019230769230769) internal successors, (4625), 3953 states have internal predecessors, (4625), 1296 states have call successors, (1296), 527 states have call predecessors, (1296), 556 states have return successors, (1425), 1255 states have call predecessors, (1425), 1294 states have call successors, (1425) [2024-12-02 08:52:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5706 states to 5706 states and 7346 transitions. [2024-12-02 08:52:27,262 INFO L78 Accepts]: Start accepts. Automaton has 5706 states and 7346 transitions. Word has length 250 [2024-12-02 08:52:27,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:27,262 INFO L471 AbstractCegarLoop]: Abstraction has 5706 states and 7346 transitions. [2024-12-02 08:52:27,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.8125) internal successors, (93), 13 states have internal predecessors, (93), 7 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (30), 8 states have call predecessors, (30), 6 states have call successors, (30) [2024-12-02 08:52:27,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5706 states and 7346 transitions. [2024-12-02 08:52:27,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-12-02 08:52:27,287 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:27,288 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:27,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 08:52:27,288 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:52:27,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:27,289 INFO L85 PathProgramCache]: Analyzing trace with hash -16042797, now seen corresponding path program 1 times [2024-12-02 08:52:27,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:27,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574575125] [2024-12-02 08:52:27,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:27,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2024-12-02 08:52:28,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:28,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574575125] [2024-12-02 08:52:28,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574575125] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:52:28,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:52:28,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:52:28,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493913282] [2024-12-02 08:52:28,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:52:28,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:52:28,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:28,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:52:28,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:52:28,120 INFO L87 Difference]: Start difference. First operand 5706 states and 7346 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2024-12-02 08:52:28,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:28,820 INFO L93 Difference]: Finished difference Result 10282 states and 13161 transitions. [2024-12-02 08:52:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:52:28,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 232 [2024-12-02 08:52:28,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:28,834 INFO L225 Difference]: With dead ends: 10282 [2024-12-02 08:52:28,834 INFO L226 Difference]: Without dead ends: 5639 [2024-12-02 08:52:28,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:52:28,841 INFO L435 NwaCegarLoop]: 1299 mSDtfsCounter, 0 mSDsluCounter, 5181 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6480 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:52:28,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6480 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:52:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2024-12-02 08:52:29,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5639. [2024-12-02 08:52:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5639 states, 3808 states have (on average 1.19984243697479) internal successors, (4569), 3905 states have internal predecessors, (4569), 1270 states have call successors, (1270), 526 states have call predecessors, (1270), 555 states have return successors, (1399), 1237 states have call predecessors, (1399), 1268 states have call successors, (1399) [2024-12-02 08:52:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5639 states to 5639 states and 7238 transitions. [2024-12-02 08:52:29,474 INFO L78 Accepts]: Start accepts. Automaton has 5639 states and 7238 transitions. Word has length 232 [2024-12-02 08:52:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:29,475 INFO L471 AbstractCegarLoop]: Abstraction has 5639 states and 7238 transitions. [2024-12-02 08:52:29,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2024-12-02 08:52:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5639 states and 7238 transitions. [2024-12-02 08:52:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-12-02 08:52:29,476 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:29,476 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:29,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 08:52:29,476 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:52:29,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1824007240, now seen corresponding path program 1 times [2024-12-02 08:52:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273308255] [2024-12-02 08:52:29,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:29,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 21 proven. 48 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-12-02 08:52:31,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:31,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273308255] [2024-12-02 08:52:31,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273308255] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:52:31,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168064166] [2024-12-02 08:52:31,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:31,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:52:31,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:52:31,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:52:31,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:52:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:33,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 08:52:33,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:52:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 289 proven. 3 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2024-12-02 08:52:33,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:52:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 20 proven. 45 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-12-02 08:52:35,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168064166] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:52:35,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:52:35,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 14 [2024-12-02 08:52:35,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697986475] [2024-12-02 08:52:35,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:52:35,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 08:52:35,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:35,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 08:52:35,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:52:35,386 INFO L87 Difference]: Start difference. First operand 5639 states and 7238 transitions. Second operand has 14 states, 13 states have (on average 12.615384615384615) internal successors, (164), 12 states have internal predecessors, (164), 5 states have call successors, (62), 2 states have call predecessors, (62), 5 states have return successors, (62), 6 states have call predecessors, (62), 5 states have call successors, (62) [2024-12-02 08:52:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:37,299 INFO L93 Difference]: Finished difference Result 11231 states and 14417 transitions. [2024-12-02 08:52:37,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 08:52:37,300 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 12.615384615384615) internal successors, (164), 12 states have internal predecessors, (164), 5 states have call successors, (62), 2 states have call predecessors, (62), 5 states have return successors, (62), 6 states have call predecessors, (62), 5 states have call successors, (62) Word has length 255 [2024-12-02 08:52:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:37,314 INFO L225 Difference]: With dead ends: 11231 [2024-12-02 08:52:37,314 INFO L226 Difference]: Without dead ends: 5639 [2024-12-02 08:52:37,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 504 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:52:37,323 INFO L435 NwaCegarLoop]: 1271 mSDtfsCounter, 224 mSDsluCounter, 11202 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 12473 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:52:37,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 12473 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 08:52:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2024-12-02 08:52:37,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5639. [2024-12-02 08:52:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5639 states, 3808 states have (on average 1.199579831932773) internal successors, (4568), 3904 states have internal predecessors, (4568), 1270 states have call successors, (1270), 526 states have call predecessors, (1270), 555 states have return successors, (1399), 1237 states have call predecessors, (1399), 1268 states have call successors, (1399) [2024-12-02 08:52:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5639 states to 5639 states and 7237 transitions. [2024-12-02 08:52:37,958 INFO L78 Accepts]: Start accepts. Automaton has 5639 states and 7237 transitions. Word has length 255 [2024-12-02 08:52:37,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:37,958 INFO L471 AbstractCegarLoop]: Abstraction has 5639 states and 7237 transitions. [2024-12-02 08:52:37,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 12.615384615384615) internal successors, (164), 12 states have internal predecessors, (164), 5 states have call successors, (62), 2 states have call predecessors, (62), 5 states have return successors, (62), 6 states have call predecessors, (62), 5 states have call successors, (62) [2024-12-02 08:52:37,959 INFO L276 IsEmpty]: Start isEmpty. Operand 5639 states and 7237 transitions. [2024-12-02 08:52:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-12-02 08:52:37,960 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:37,960 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:37,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 08:52:38,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:52:38,161 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:52:38,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1300334197, now seen corresponding path program 1 times [2024-12-02 08:52:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:52:38,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93924842] [2024-12-02 08:52:38,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:38,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:52:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-12-02 08:52:41,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:52:41,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93924842] [2024-12-02 08:52:41,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93924842] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:52:41,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:52:41,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 08:52:41,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816631673] [2024-12-02 08:52:41,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:52:41,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 08:52:41,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:52:41,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 08:52:41,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:52:41,284 INFO L87 Difference]: Start difference. First operand 5639 states and 7237 transitions. Second operand has 16 states, 15 states have (on average 6.4) internal successors, (96), 12 states have internal predecessors, (96), 7 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (32), 8 states have call predecessors, (32), 6 states have call successors, (32) [2024-12-02 08:52:45,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:52:49,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:52:53,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:53:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:16,296 INFO L93 Difference]: Finished difference Result 8514 states and 10900 transitions. [2024-12-02 08:53:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 08:53:16,297 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.4) internal successors, (96), 12 states have internal predecessors, (96), 7 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (32), 8 states have call predecessors, (32), 6 states have call successors, (32) Word has length 259 [2024-12-02 08:53:16,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:16,313 INFO L225 Difference]: With dead ends: 8514 [2024-12-02 08:53:16,313 INFO L226 Difference]: Without dead ends: 5799 [2024-12-02 08:53:16,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-12-02 08:53:16,319 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 396 mSDsluCounter, 9191 mSDsCounter, 0 mSdLazyCounter, 7693 mSolverCounterSat, 290 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 10127 SdHoareTripleChecker+Invalid, 7986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 7693 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:16,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 10127 Invalid, 7986 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [290 Valid, 7693 Invalid, 3 Unknown, 0 Unchecked, 33.3s Time] [2024-12-02 08:53:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2024-12-02 08:53:16,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5671. [2024-12-02 08:53:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5671 states, 3825 states have (on average 1.1986928104575163) internal successors, (4585), 3921 states have internal predecessors, (4585), 1282 states have call successors, (1282), 530 states have call predecessors, (1282), 558 states have return successors, (1411), 1248 states have call predecessors, (1411), 1280 states have call successors, (1411) [2024-12-02 08:53:16,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 7278 transitions. [2024-12-02 08:53:16,927 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 7278 transitions. Word has length 259 [2024-12-02 08:53:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:16,927 INFO L471 AbstractCegarLoop]: Abstraction has 5671 states and 7278 transitions. [2024-12-02 08:53:16,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.4) internal successors, (96), 12 states have internal predecessors, (96), 7 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (32), 8 states have call predecessors, (32), 6 states have call successors, (32) [2024-12-02 08:53:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 7278 transitions. [2024-12-02 08:53:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-12-02 08:53:16,929 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:16,929 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:53:16,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 08:53:16,929 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:53:16,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:16,929 INFO L85 PathProgramCache]: Analyzing trace with hash 418861125, now seen corresponding path program 1 times [2024-12-02 08:53:16,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:16,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515902243] [2024-12-02 08:53:16,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:16,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-12-02 08:53:18,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:18,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515902243] [2024-12-02 08:53:18,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515902243] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:18,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:53:18,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:53:18,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907611675] [2024-12-02 08:53:18,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:18,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:53:18,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:18,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:53:18,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:53:18,143 INFO L87 Difference]: Start difference. First operand 5671 states and 7278 transitions. Second operand has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 08:53:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:19,290 INFO L93 Difference]: Finished difference Result 10304 states and 13163 transitions. [2024-12-02 08:53:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:53:19,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 256 [2024-12-02 08:53:19,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:19,311 INFO L225 Difference]: With dead ends: 10304 [2024-12-02 08:53:19,311 INFO L226 Difference]: Without dead ends: 5727 [2024-12-02 08:53:19,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:53:19,318 INFO L435 NwaCegarLoop]: 1273 mSDtfsCounter, 55 mSDsluCounter, 6310 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 7583 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:19,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 7583 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 08:53:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5727 states. [2024-12-02 08:53:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5727 to 5671. [2024-12-02 08:53:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5671 states, 3825 states have (on average 1.1966013071895425) internal successors, (4577), 3921 states have internal predecessors, (4577), 1282 states have call successors, (1282), 530 states have call predecessors, (1282), 558 states have return successors, (1411), 1248 states have call predecessors, (1411), 1280 states have call successors, (1411) [2024-12-02 08:53:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 7270 transitions. [2024-12-02 08:53:19,931 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 7270 transitions. Word has length 256 [2024-12-02 08:53:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:19,931 INFO L471 AbstractCegarLoop]: Abstraction has 5671 states and 7270 transitions. [2024-12-02 08:53:19,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 08:53:19,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 7270 transitions. [2024-12-02 08:53:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-12-02 08:53:19,934 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:19,935 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:53:19,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 08:53:19,935 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:53:19,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1421762776, now seen corresponding path program 1 times [2024-12-02 08:53:19,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:19,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496500562] [2024-12-02 08:53:19,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:19,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2024-12-02 08:53:20,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:20,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496500562] [2024-12-02 08:53:20,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496500562] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:20,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:53:20,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:53:20,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763095662] [2024-12-02 08:53:20,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:20,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:53:20,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:20,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:53:20,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:53:20,981 INFO L87 Difference]: Start difference. First operand 5671 states and 7270 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 08:53:21,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:21,851 INFO L93 Difference]: Finished difference Result 5703 states and 7294 transitions. [2024-12-02 08:53:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:53:21,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 272 [2024-12-02 08:53:21,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:21,868 INFO L225 Difference]: With dead ends: 5703 [2024-12-02 08:53:21,868 INFO L226 Difference]: Without dead ends: 5701 [2024-12-02 08:53:21,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:53:21,870 INFO L435 NwaCegarLoop]: 1288 mSDtfsCounter, 1173 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:21,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 3895 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:53:21,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5701 states. [2024-12-02 08:53:22,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5701 to 5701. [2024-12-02 08:53:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5701 states, 3848 states have (on average 1.1933471933471933) internal successors, (4592), 3943 states have internal predecessors, (4592), 1282 states have call successors, (1282), 538 states have call predecessors, (1282), 566 states have return successors, (1411), 1248 states have call predecessors, (1411), 1280 states have call successors, (1411) [2024-12-02 08:53:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5701 states to 5701 states and 7285 transitions. [2024-12-02 08:53:22,538 INFO L78 Accepts]: Start accepts. Automaton has 5701 states and 7285 transitions. Word has length 272 [2024-12-02 08:53:22,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:22,539 INFO L471 AbstractCegarLoop]: Abstraction has 5701 states and 7285 transitions. [2024-12-02 08:53:22,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 08:53:22,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5701 states and 7285 transitions. [2024-12-02 08:53:22,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-12-02 08:53:22,541 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:22,541 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:53:22,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-12-02 08:53:22,541 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:53:22,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:22,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1124078990, now seen corresponding path program 1 times [2024-12-02 08:53:22,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:22,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622626867] [2024-12-02 08:53:22,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:22,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2024-12-02 08:53:24,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:24,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622626867] [2024-12-02 08:53:24,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622626867] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:53:24,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725506977] [2024-12-02 08:53:24,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:24,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:53:24,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:53:24,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:53:24,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 08:53:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:26,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 08:53:26,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:53:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-12-02 08:53:27,791 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:53:27,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725506977] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:27,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:53:27,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 25 [2024-12-02 08:53:27,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909574891] [2024-12-02 08:53:27,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:27,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 08:53:27,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:27,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 08:53:27,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2024-12-02 08:53:27,792 INFO L87 Difference]: Start difference. First operand 5701 states and 7285 transitions. Second operand has 13 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 5 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 5 states have call predecessors, (35), 5 states have call successors, (35) [2024-12-02 08:53:30,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:30,426 INFO L93 Difference]: Finished difference Result 10742 states and 13721 transitions. [2024-12-02 08:53:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 08:53:30,427 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 5 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 5 states have call predecessors, (35), 5 states have call successors, (35) Word has length 260 [2024-12-02 08:53:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:30,445 INFO L225 Difference]: With dead ends: 10742 [2024-12-02 08:53:30,445 INFO L226 Difference]: Without dead ends: 6143 [2024-12-02 08:53:30,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 08:53:30,452 INFO L435 NwaCegarLoop]: 1355 mSDtfsCounter, 59 mSDsluCounter, 14764 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 16119 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:30,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 16119 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 08:53:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6143 states. [2024-12-02 08:53:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6143 to 5733. [2024-12-02 08:53:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5733 states, 3876 states have (on average 1.1909184726522188) internal successors, (4616), 3967 states have internal predecessors, (4616), 1286 states have call successors, (1286), 538 states have call predecessors, (1286), 566 states have return successors, (1415), 1256 states have call predecessors, (1415), 1284 states have call successors, (1415) [2024-12-02 08:53:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5733 states to 5733 states and 7317 transitions. [2024-12-02 08:53:31,140 INFO L78 Accepts]: Start accepts. Automaton has 5733 states and 7317 transitions. Word has length 260 [2024-12-02 08:53:31,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:31,140 INFO L471 AbstractCegarLoop]: Abstraction has 5733 states and 7317 transitions. [2024-12-02 08:53:31,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 5 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 5 states have call predecessors, (35), 5 states have call successors, (35) [2024-12-02 08:53:31,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5733 states and 7317 transitions. [2024-12-02 08:53:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-12-02 08:53:31,142 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:31,143 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:53:31,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 08:53:31,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-12-02 08:53:31,343 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:53:31,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:31,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1180641301, now seen corresponding path program 1 times [2024-12-02 08:53:31,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:31,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395367307] [2024-12-02 08:53:31,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2024-12-02 08:53:33,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:33,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395367307] [2024-12-02 08:53:33,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395367307] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:33,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:53:33,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 08:53:33,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101357073] [2024-12-02 08:53:33,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:33,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 08:53:33,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:33,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 08:53:33,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:53:33,406 INFO L87 Difference]: Start difference. First operand 5733 states and 7317 transitions. Second operand has 15 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 7 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) [2024-12-02 08:53:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:35,726 INFO L93 Difference]: Finished difference Result 10950 states and 13936 transitions. [2024-12-02 08:53:35,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 08:53:35,726 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 7 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) Word has length 330 [2024-12-02 08:53:35,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:35,749 INFO L225 Difference]: With dead ends: 10950 [2024-12-02 08:53:35,749 INFO L226 Difference]: Without dead ends: 5805 [2024-12-02 08:53:35,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:53:35,760 INFO L435 NwaCegarLoop]: 1259 mSDtfsCounter, 52 mSDsluCounter, 16233 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 17492 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:35,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 17492 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 08:53:35,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5805 states. [2024-12-02 08:53:36,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5805 to 5784. [2024-12-02 08:53:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 3912 states have (on average 1.1891615541922291) internal successors, (4652), 4000 states have internal predecessors, (4652), 1301 states have call successors, (1301), 538 states have call predecessors, (1301), 566 states have return successors, (1430), 1273 states have call predecessors, (1430), 1299 states have call successors, (1430) [2024-12-02 08:53:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 7383 transitions. [2024-12-02 08:53:36,488 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 7383 transitions. Word has length 330 [2024-12-02 08:53:36,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:36,488 INFO L471 AbstractCegarLoop]: Abstraction has 5784 states and 7383 transitions. [2024-12-02 08:53:36,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 7 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) [2024-12-02 08:53:36,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 7383 transitions. [2024-12-02 08:53:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-12-02 08:53:36,490 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:36,490 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 11, 11, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:53:36,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-12-02 08:53:36,490 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:53:36,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:36,491 INFO L85 PathProgramCache]: Analyzing trace with hash 986426265, now seen corresponding path program 1 times [2024-12-02 08:53:36,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:36,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386197677] [2024-12-02 08:53:36,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:36,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2024-12-02 08:53:37,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:37,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386197677] [2024-12-02 08:53:37,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386197677] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:37,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:53:37,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:53:37,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100694481] [2024-12-02 08:53:37,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:37,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:53:37,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:37,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:53:37,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:53:37,398 INFO L87 Difference]: Start difference. First operand 5784 states and 7383 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2024-12-02 08:53:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:38,155 INFO L93 Difference]: Finished difference Result 10407 states and 13219 transitions. [2024-12-02 08:53:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:53:38,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 311 [2024-12-02 08:53:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:38,174 INFO L225 Difference]: With dead ends: 10407 [2024-12-02 08:53:38,174 INFO L226 Difference]: Without dead ends: 5784 [2024-12-02 08:53:38,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:53:38,183 INFO L435 NwaCegarLoop]: 1289 mSDtfsCounter, 0 mSDsluCounter, 5149 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6438 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:38,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6438 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:53:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5784 states. [2024-12-02 08:53:38,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5784 to 5784. [2024-12-02 08:53:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 3912 states have (on average 1.1881390593047034) internal successors, (4648), 4000 states have internal predecessors, (4648), 1301 states have call successors, (1301), 538 states have call predecessors, (1301), 566 states have return successors, (1430), 1273 states have call predecessors, (1430), 1299 states have call successors, (1430) [2024-12-02 08:53:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 7379 transitions. [2024-12-02 08:53:38,873 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 7379 transitions. Word has length 311 [2024-12-02 08:53:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:38,873 INFO L471 AbstractCegarLoop]: Abstraction has 5784 states and 7379 transitions. [2024-12-02 08:53:38,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2024-12-02 08:53:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 7379 transitions. [2024-12-02 08:53:38,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-12-02 08:53:38,875 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:38,875 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 11, 11, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:53:38,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-12-02 08:53:38,875 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:53:38,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:38,875 INFO L85 PathProgramCache]: Analyzing trace with hash -615042571, now seen corresponding path program 1 times [2024-12-02 08:53:38,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:38,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973086953] [2024-12-02 08:53:38,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:38,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2024-12-02 08:53:41,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:41,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973086953] [2024-12-02 08:53:41,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973086953] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:53:41,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953283961] [2024-12-02 08:53:41,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:41,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:53:41,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:53:41,234 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:53:41,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 08:53:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:43,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 2805 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 08:53:43,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:53:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2024-12-02 08:53:44,600 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:53:44,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953283961] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:44,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:53:44,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 25 [2024-12-02 08:53:44,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395902958] [2024-12-02 08:53:44,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:44,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 08:53:44,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:44,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 08:53:44,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2024-12-02 08:53:44,602 INFO L87 Difference]: Start difference. First operand 5784 states and 7379 transitions. Second operand has 13 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 6 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (47), 6 states have call predecessors, (47), 6 states have call successors, (47) [2024-12-02 08:53:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:47,336 INFO L93 Difference]: Finished difference Result 10859 states and 13837 transitions. [2024-12-02 08:53:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 08:53:47,336 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 6 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (47), 6 states have call predecessors, (47), 6 states have call successors, (47) Word has length 331 [2024-12-02 08:53:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:47,360 INFO L225 Difference]: With dead ends: 10859 [2024-12-02 08:53:47,360 INFO L226 Difference]: Without dead ends: 6232 [2024-12-02 08:53:47,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 08:53:47,371 INFO L435 NwaCegarLoop]: 1355 mSDtfsCounter, 61 mSDsluCounter, 14764 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 16119 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:47,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 16119 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 08:53:47,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6232 states. [2024-12-02 08:53:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6232 to 5770. [2024-12-02 08:53:48,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5770 states, 3902 states have (on average 1.1881086622245003) internal successors, (4636), 3988 states have internal predecessors, (4636), 1297 states have call successors, (1297), 538 states have call predecessors, (1297), 566 states have return successors, (1426), 1271 states have call predecessors, (1426), 1295 states have call successors, (1426) [2024-12-02 08:53:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 7359 transitions. [2024-12-02 08:53:48,046 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 7359 transitions. Word has length 331 [2024-12-02 08:53:48,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:48,046 INFO L471 AbstractCegarLoop]: Abstraction has 5770 states and 7359 transitions. [2024-12-02 08:53:48,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 6 states have call successors, (49), 2 states have call predecessors, (49), 4 states have return successors, (47), 6 states have call predecessors, (47), 6 states have call successors, (47) [2024-12-02 08:53:48,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 7359 transitions. [2024-12-02 08:53:48,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-12-02 08:53:48,048 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:48,048 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:53:48,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 08:53:48,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-12-02 08:53:48,249 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:53:48,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1076831102, now seen corresponding path program 1 times [2024-12-02 08:53:48,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:48,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597009206] [2024-12-02 08:53:48,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:48,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked. [2024-12-02 08:53:50,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:50,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597009206] [2024-12-02 08:53:50,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597009206] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:53:50,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:53:50,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:53:50,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057450919] [2024-12-02 08:53:50,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:53:50,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:53:50,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:53:50,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:53:50,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:53:50,425 INFO L87 Difference]: Start difference. First operand 5770 states and 7359 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-12-02 08:53:54,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:53:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:53:55,687 INFO L93 Difference]: Finished difference Result 11434 states and 14585 transitions. [2024-12-02 08:53:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:53:55,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 395 [2024-12-02 08:53:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:53:55,708 INFO L225 Difference]: With dead ends: 11434 [2024-12-02 08:53:55,708 INFO L226 Difference]: Without dead ends: 5781 [2024-12-02 08:53:55,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:53:55,718 INFO L435 NwaCegarLoop]: 1287 mSDtfsCounter, 9 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:53:55,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3768 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 08:53:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5781 states. [2024-12-02 08:53:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5781 to 5779. [2024-12-02 08:53:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5779 states, 3911 states have (on average 1.1884428534901559) internal successors, (4648), 3997 states have internal predecessors, (4648), 1297 states have call successors, (1297), 538 states have call predecessors, (1297), 566 states have return successors, (1426), 1271 states have call predecessors, (1426), 1295 states have call successors, (1426) [2024-12-02 08:53:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5779 states to 5779 states and 7371 transitions. [2024-12-02 08:53:56,423 INFO L78 Accepts]: Start accepts. Automaton has 5779 states and 7371 transitions. Word has length 395 [2024-12-02 08:53:56,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:53:56,423 INFO L471 AbstractCegarLoop]: Abstraction has 5779 states and 7371 transitions. [2024-12-02 08:53:56,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-12-02 08:53:56,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5779 states and 7371 transitions. [2024-12-02 08:53:56,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-12-02 08:53:56,426 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:53:56,426 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 11, 11, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:53:56,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-12-02 08:53:56,426 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:53:56,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:53:56,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1699448247, now seen corresponding path program 1 times [2024-12-02 08:53:56,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:53:56,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004876504] [2024-12-02 08:53:56,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:56,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:53:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2024-12-02 08:53:59,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:53:59,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004876504] [2024-12-02 08:53:59,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004876504] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:53:59,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859886266] [2024-12-02 08:53:59,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:59,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:53:59,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:53:59,044 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:53:59,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 08:54:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:01,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 2935 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 08:54:01,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:54:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2024-12-02 08:54:02,836 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:54:02,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859886266] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:02,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:54:02,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [18] total 28 [2024-12-02 08:54:02,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320925837] [2024-12-02 08:54:02,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:02,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 08:54:02,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:02,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 08:54:02,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2024-12-02 08:54:02,837 INFO L87 Difference]: Start difference. First operand 5779 states and 7371 transitions. Second operand has 14 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 7 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (50), 7 states have call predecessors, (50), 7 states have call successors, (50) [2024-12-02 08:54:05,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:05,910 INFO L93 Difference]: Finished difference Result 10834 states and 13803 transitions. [2024-12-02 08:54:05,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 08:54:05,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 7 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (50), 7 states have call predecessors, (50), 7 states have call successors, (50) Word has length 350 [2024-12-02 08:54:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:05,932 INFO L225 Difference]: With dead ends: 10834 [2024-12-02 08:54:05,933 INFO L226 Difference]: Without dead ends: 6223 [2024-12-02 08:54:05,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 08:54:05,942 INFO L435 NwaCegarLoop]: 1355 mSDtfsCounter, 61 mSDsluCounter, 16109 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 17464 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:05,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 17464 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 08:54:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6223 states. [2024-12-02 08:54:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6223 to 5779. [2024-12-02 08:54:06,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5779 states, 3911 states have (on average 1.1884428534901559) internal successors, (4648), 3997 states have internal predecessors, (4648), 1297 states have call successors, (1297), 538 states have call predecessors, (1297), 566 states have return successors, (1426), 1271 states have call predecessors, (1426), 1295 states have call successors, (1426) [2024-12-02 08:54:06,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5779 states to 5779 states and 7371 transitions. [2024-12-02 08:54:06,670 INFO L78 Accepts]: Start accepts. Automaton has 5779 states and 7371 transitions. Word has length 350 [2024-12-02 08:54:06,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:06,671 INFO L471 AbstractCegarLoop]: Abstraction has 5779 states and 7371 transitions. [2024-12-02 08:54:06,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 7 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (50), 7 states have call predecessors, (50), 7 states have call successors, (50) [2024-12-02 08:54:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5779 states and 7371 transitions. [2024-12-02 08:54:06,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-12-02 08:54:06,673 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:06,673 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:54:06,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 08:54:06,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-12-02 08:54:06,874 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:54:06,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:06,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1898514828, now seen corresponding path program 1 times [2024-12-02 08:54:06,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:06,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906918459] [2024-12-02 08:54:06,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:06,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2024-12-02 08:54:08,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:08,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906918459] [2024-12-02 08:54:08,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906918459] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:08,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:54:08,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:54:08,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275244503] [2024-12-02 08:54:08,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:08,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:54:08,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:08,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:54:08,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:54:08,823 INFO L87 Difference]: Start difference. First operand 5779 states and 7371 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-12-02 08:54:12,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:54:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:14,117 INFO L93 Difference]: Finished difference Result 11452 states and 14609 transitions. [2024-12-02 08:54:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:54:14,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 403 [2024-12-02 08:54:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:14,141 INFO L225 Difference]: With dead ends: 11452 [2024-12-02 08:54:14,141 INFO L226 Difference]: Without dead ends: 5801 [2024-12-02 08:54:14,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:54:14,152 INFO L435 NwaCegarLoop]: 1287 mSDtfsCounter, 4 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3767 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:14,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3767 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 08:54:14,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2024-12-02 08:54:14,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5797. [2024-12-02 08:54:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5797 states, 3929 states have (on average 1.1893611606006618) internal successors, (4673), 4015 states have internal predecessors, (4673), 1297 states have call successors, (1297), 538 states have call predecessors, (1297), 566 states have return successors, (1426), 1271 states have call predecessors, (1426), 1295 states have call successors, (1426) [2024-12-02 08:54:14,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5797 states to 5797 states and 7396 transitions. [2024-12-02 08:54:14,882 INFO L78 Accepts]: Start accepts. Automaton has 5797 states and 7396 transitions. Word has length 403 [2024-12-02 08:54:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:14,882 INFO L471 AbstractCegarLoop]: Abstraction has 5797 states and 7396 transitions. [2024-12-02 08:54:14,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-12-02 08:54:14,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5797 states and 7396 transitions. [2024-12-02 08:54:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-12-02 08:54:14,885 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:14,885 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:54:14,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-12-02 08:54:14,885 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:54:14,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:14,885 INFO L85 PathProgramCache]: Analyzing trace with hash 125633368, now seen corresponding path program 1 times [2024-12-02 08:54:14,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:14,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069025991] [2024-12-02 08:54:14,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:14,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2024-12-02 08:54:17,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069025991] [2024-12-02 08:54:17,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069025991] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:54:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656337676] [2024-12-02 08:54:17,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:54:17,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:54:17,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:54:17,018 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:54:17,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 08:54:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:54:19,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 3382 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 08:54:19,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:54:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-12-02 08:54:20,103 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:54:20,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656337676] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:20,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:54:20,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 8 [2024-12-02 08:54:20,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076216129] [2024-12-02 08:54:20,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:20,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:54:20,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:20,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:54:20,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:54:20,104 INFO L87 Difference]: Start difference. First operand 5797 states and 7396 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (49), 5 states have call predecessors, (49), 3 states have call successors, (49) [2024-12-02 08:54:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:54:20,915 INFO L93 Difference]: Finished difference Result 11456 states and 14611 transitions. [2024-12-02 08:54:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:54:20,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (49), 5 states have call predecessors, (49), 3 states have call successors, (49) Word has length 411 [2024-12-02 08:54:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:54:20,938 INFO L225 Difference]: With dead ends: 11456 [2024-12-02 08:54:20,938 INFO L226 Difference]: Without dead ends: 5809 [2024-12-02 08:54:20,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:54:20,949 INFO L435 NwaCegarLoop]: 1289 mSDtfsCounter, 0 mSDsluCounter, 7726 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9015 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:54:20,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9015 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:54:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2024-12-02 08:54:21,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 5804. [2024-12-02 08:54:21,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5804 states, 3934 states have (on average 1.1891204880528723) internal successors, (4678), 4019 states have internal predecessors, (4678), 1298 states have call successors, (1298), 538 states have call predecessors, (1298), 567 states have return successors, (1430), 1274 states have call predecessors, (1430), 1296 states have call successors, (1430) [2024-12-02 08:54:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 7406 transitions. [2024-12-02 08:54:21,686 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 7406 transitions. Word has length 411 [2024-12-02 08:54:21,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:54:21,686 INFO L471 AbstractCegarLoop]: Abstraction has 5804 states and 7406 transitions. [2024-12-02 08:54:21,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (49), 5 states have call predecessors, (49), 3 states have call successors, (49) [2024-12-02 08:54:21,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 7406 transitions. [2024-12-02 08:54:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-12-02 08:54:21,689 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:54:21,689 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:54:21,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 08:54:21,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:54:21,889 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:54:21,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:54:21,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1911369240, now seen corresponding path program 2 times [2024-12-02 08:54:21,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:54:21,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223315772] [2024-12-02 08:54:21,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:54:21,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:54:22,667 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 08:54:22,668 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:54:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1130 trivial. 0 not checked. [2024-12-02 08:54:23,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:54:23,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223315772] [2024-12-02 08:54:23,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223315772] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:54:23,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:54:23,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 08:54:23,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751553337] [2024-12-02 08:54:23,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:54:23,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:54:23,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:54:23,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:54:23,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:54:23,851 INFO L87 Difference]: Start difference. First operand 5804 states and 7406 transitions. Second operand has 10 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 4 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2024-12-02 08:54:27,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:54:31,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:54:35,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:54:39,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:54:44,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 08:55:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:55:01,677 INFO L93 Difference]: Finished difference Result 8517 states and 10837 transitions. [2024-12-02 08:55:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 08:55:01,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 4 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 443 [2024-12-02 08:55:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:55:01,699 INFO L225 Difference]: With dead ends: 8517 [2024-12-02 08:55:01,699 INFO L226 Difference]: Without dead ends: 5972 [2024-12-02 08:55:01,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:55:01,704 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 348 mSDsluCounter, 5278 mSDsCounter, 0 mSdLazyCounter, 4826 mSolverCounterSat, 274 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 6222 SdHoareTripleChecker+Invalid, 5105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 4826 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:55:01,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 6222 Invalid, 5105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [274 Valid, 4826 Invalid, 5 Unknown, 0 Unchecked, 36.1s Time] [2024-12-02 08:55:01,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5972 states. [2024-12-02 08:55:02,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5972 to 5825. [2024-12-02 08:55:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5825 states, 3945 states have (on average 1.188593155893536) internal successors, (4689), 4030 states have internal predecessors, (4689), 1306 states have call successors, (1306), 540 states have call predecessors, (1306), 569 states have return successors, (1438), 1282 states have call predecessors, (1438), 1304 states have call successors, (1438) [2024-12-02 08:55:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5825 states to 5825 states and 7433 transitions. [2024-12-02 08:55:02,396 INFO L78 Accepts]: Start accepts. Automaton has 5825 states and 7433 transitions. Word has length 443 [2024-12-02 08:55:02,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:55:02,396 INFO L471 AbstractCegarLoop]: Abstraction has 5825 states and 7433 transitions. [2024-12-02 08:55:02,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 4 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2024-12-02 08:55:02,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5825 states and 7433 transitions. [2024-12-02 08:55:02,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-12-02 08:55:02,399 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:55:02,399 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 11, 11, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:55:02,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-12-02 08:55:02,399 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:55:02,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:55:02,400 INFO L85 PathProgramCache]: Analyzing trace with hash 249364971, now seen corresponding path program 1 times [2024-12-02 08:55:02,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:55:02,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608133935] [2024-12-02 08:55:02,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:02,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:55:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-12-02 08:55:03,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:55:03,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608133935] [2024-12-02 08:55:03,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608133935] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:55:03,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:55:03,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:55:03,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958402168] [2024-12-02 08:55:03,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:55:03,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:55:03,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:55:03,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:55:03,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:55:03,146 INFO L87 Difference]: Start difference. First operand 5825 states and 7433 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2024-12-02 08:55:04,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:55:04,110 INFO L93 Difference]: Finished difference Result 10438 states and 13259 transitions. [2024-12-02 08:55:04,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:55:04,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 392 [2024-12-02 08:55:04,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:55:04,136 INFO L225 Difference]: With dead ends: 10438 [2024-12-02 08:55:04,136 INFO L226 Difference]: Without dead ends: 5829 [2024-12-02 08:55:04,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:55:04,144 INFO L435 NwaCegarLoop]: 1291 mSDtfsCounter, 0 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2578 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:55:04,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2578 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:55:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5829 states. [2024-12-02 08:55:04,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5829 to 5829. [2024-12-02 08:55:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5829 states, 3949 states have (on average 1.18840212712079) internal successors, (4693), 4034 states have internal predecessors, (4693), 1306 states have call successors, (1306), 540 states have call predecessors, (1306), 569 states have return successors, (1438), 1282 states have call predecessors, (1438), 1304 states have call successors, (1438) [2024-12-02 08:55:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 7437 transitions. [2024-12-02 08:55:04,881 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 7437 transitions. Word has length 392 [2024-12-02 08:55:04,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:55:04,882 INFO L471 AbstractCegarLoop]: Abstraction has 5829 states and 7437 transitions. [2024-12-02 08:55:04,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2024-12-02 08:55:04,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 7437 transitions. [2024-12-02 08:55:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-12-02 08:55:04,884 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:55:04,884 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 11, 11, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:55:04,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-12-02 08:55:04,885 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:55:04,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:55:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash 319012845, now seen corresponding path program 1 times [2024-12-02 08:55:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:55:04,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313603114] [2024-12-02 08:55:04,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:04,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:55:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2024-12-02 08:55:07,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:55:07,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313603114] [2024-12-02 08:55:07,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313603114] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:55:07,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422379590] [2024-12-02 08:55:07,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:07,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:55:07,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:55:07,396 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:55:07,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 08:55:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:10,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 3258 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 08:55:10,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:55:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2024-12-02 08:55:10,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:55:10,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422379590] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:55:10,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:55:10,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [18] total 20 [2024-12-02 08:55:10,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758378684] [2024-12-02 08:55:10,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:55:10,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 08:55:10,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:55:10,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 08:55:10,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2024-12-02 08:55:10,863 INFO L87 Difference]: Start difference. First operand 5829 states and 7437 transitions. Second operand has 18 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 states have internal predecessors, (172), 7 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (52), 7 states have call predecessors, (52), 7 states have call successors, (52) [2024-12-02 08:55:13,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:55:13,486 INFO L93 Difference]: Finished difference Result 10463 states and 13283 transitions. [2024-12-02 08:55:13,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 08:55:13,487 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 states have internal predecessors, (172), 7 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (52), 7 states have call predecessors, (52), 7 states have call successors, (52) Word has length 392 [2024-12-02 08:55:13,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:55:13,506 INFO L225 Difference]: With dead ends: 10463 [2024-12-02 08:55:13,507 INFO L226 Difference]: Without dead ends: 5808 [2024-12-02 08:55:13,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2024-12-02 08:55:13,513 INFO L435 NwaCegarLoop]: 1258 mSDtfsCounter, 2 mSDsluCounter, 20069 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21327 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:55:13,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 21327 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 08:55:13,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5808 states. [2024-12-02 08:55:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5808 to 5808. [2024-12-02 08:55:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5808 states, 3934 states have (on average 1.1888662938485002) internal successors, (4677), 4018 states have internal predecessors, (4677), 1303 states have call successors, (1303), 537 states have call predecessors, (1303), 566 states have return successors, (1435), 1280 states have call predecessors, (1435), 1301 states have call successors, (1435) [2024-12-02 08:55:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 7415 transitions. [2024-12-02 08:55:14,221 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 7415 transitions. Word has length 392 [2024-12-02 08:55:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:55:14,221 INFO L471 AbstractCegarLoop]: Abstraction has 5808 states and 7415 transitions. [2024-12-02 08:55:14,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 states have internal predecessors, (172), 7 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (52), 7 states have call predecessors, (52), 7 states have call successors, (52) [2024-12-02 08:55:14,221 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 7415 transitions. [2024-12-02 08:55:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-12-02 08:55:14,223 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:55:14,223 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 11, 11, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:55:14,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 08:55:14,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:55:14,424 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:55:14,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:55:14,424 INFO L85 PathProgramCache]: Analyzing trace with hash 483820015, now seen corresponding path program 1 times [2024-12-02 08:55:14,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:55:14,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976920040] [2024-12-02 08:55:14,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:14,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:55:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-12-02 08:55:15,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:55:15,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976920040] [2024-12-02 08:55:15,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976920040] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:55:15,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546406426] [2024-12-02 08:55:15,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:15,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:55:15,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:55:15,615 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:55:15,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 08:55:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:18,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 3256 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 08:55:18,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:55:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2024-12-02 08:55:18,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:55:18,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546406426] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:55:18,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:55:18,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2024-12-02 08:55:18,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872619643] [2024-12-02 08:55:18,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:55:18,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:55:18,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:55:18,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:55:18,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:55:18,610 INFO L87 Difference]: Start difference. First operand 5808 states and 7415 transitions. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 3 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2024-12-02 08:55:19,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:55:19,680 INFO L93 Difference]: Finished difference Result 10455 states and 13273 transitions. [2024-12-02 08:55:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:55:19,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 3 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 392 [2024-12-02 08:55:19,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:55:19,703 INFO L225 Difference]: With dead ends: 10455 [2024-12-02 08:55:19,703 INFO L226 Difference]: Without dead ends: 5808 [2024-12-02 08:55:19,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:55:19,711 INFO L435 NwaCegarLoop]: 1268 mSDtfsCounter, 123 mSDsluCounter, 4850 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 6118 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:55:19,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 6118 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:55:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5808 states. [2024-12-02 08:55:20,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5808 to 5806. [2024-12-02 08:55:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5806 states, 3933 states have (on average 1.1886600559369438) internal successors, (4675), 4017 states have internal predecessors, (4675), 1302 states have call successors, (1302), 537 states have call predecessors, (1302), 566 states have return successors, (1434), 1279 states have call predecessors, (1434), 1300 states have call successors, (1434) [2024-12-02 08:55:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5806 states to 5806 states and 7411 transitions. [2024-12-02 08:55:20,413 INFO L78 Accepts]: Start accepts. Automaton has 5806 states and 7411 transitions. Word has length 392 [2024-12-02 08:55:20,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:55:20,413 INFO L471 AbstractCegarLoop]: Abstraction has 5806 states and 7411 transitions. [2024-12-02 08:55:20,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 3 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2024-12-02 08:55:20,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5806 states and 7411 transitions. [2024-12-02 08:55:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-12-02 08:55:20,415 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:55:20,415 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 10, 10, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:55:20,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 08:55:20,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:55:20,616 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:55:20,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:55:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash -273911840, now seen corresponding path program 1 times [2024-12-02 08:55:20,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:55:20,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172482036] [2024-12-02 08:55:20,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:20,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:55:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1474 trivial. 0 not checked. [2024-12-02 08:55:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:55:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172482036] [2024-12-02 08:55:23,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172482036] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:55:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276320747] [2024-12-02 08:55:23,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:55:23,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:55:23,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:55:23,537 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:55:23,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 08:55:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:55:26,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 3674 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-12-02 08:55:26,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:55:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 95 proven. 3 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2024-12-02 08:55:27,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:55:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 92 proven. 3 refuted. 0 times theorem prover too weak. 1387 trivial. 0 not checked. [2024-12-02 08:55:30,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276320747] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:55:30,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:55:30,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 28 [2024-12-02 08:55:30,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264026585] [2024-12-02 08:55:30,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:55:30,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 08:55:30,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:55:30,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 08:55:30,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2024-12-02 08:55:30,783 INFO L87 Difference]: Start difference. First operand 5806 states and 7411 transitions. Second operand has 28 states, 27 states have (on average 5.962962962962963) internal successors, (161), 22 states have internal predecessors, (161), 8 states have call successors, (57), 2 states have call predecessors, (57), 9 states have return successors, (61), 13 states have call predecessors, (61), 8 states have call successors, (61) [2024-12-02 08:55:33,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:55:33,685 INFO L93 Difference]: Finished difference Result 11468 states and 14628 transitions. [2024-12-02 08:55:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 08:55:33,685 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.962962962962963) internal successors, (161), 22 states have internal predecessors, (161), 8 states have call successors, (57), 2 states have call predecessors, (57), 9 states have return successors, (61), 13 states have call predecessors, (61), 8 states have call successors, (61) Word has length 503 [2024-12-02 08:55:33,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:55:33,706 INFO L225 Difference]: With dead ends: 11468 [2024-12-02 08:55:33,706 INFO L226 Difference]: Without dead ends: 5832 [2024-12-02 08:55:33,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 988 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2024-12-02 08:55:33,714 INFO L435 NwaCegarLoop]: 1280 mSDtfsCounter, 0 mSDsluCounter, 26796 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28076 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:55:33,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28076 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 08:55:33,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5832 states. [2024-12-02 08:55:34,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5832 to 5832. [2024-12-02 08:55:34,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5832 states, 3951 states have (on average 1.187800556821058) internal successors, (4693), 4032 states have internal predecessors, (4693), 1307 states have call successors, (1307), 537 states have call predecessors, (1307), 569 states have return successors, (1443), 1290 states have call predecessors, (1443), 1305 states have call successors, (1443) [2024-12-02 08:55:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5832 states to 5832 states and 7443 transitions. [2024-12-02 08:55:34,379 INFO L78 Accepts]: Start accepts. Automaton has 5832 states and 7443 transitions. Word has length 503 [2024-12-02 08:55:34,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:55:34,379 INFO L471 AbstractCegarLoop]: Abstraction has 5832 states and 7443 transitions. [2024-12-02 08:55:34,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.962962962962963) internal successors, (161), 22 states have internal predecessors, (161), 8 states have call successors, (57), 2 states have call predecessors, (57), 9 states have return successors, (61), 13 states have call predecessors, (61), 8 states have call successors, (61) [2024-12-02 08:55:34,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5832 states and 7443 transitions. [2024-12-02 08:55:34,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-12-02 08:55:34,381 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:55:34,382 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 10, 10, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:55:34,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 08:55:34,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-12-02 08:55:34,582 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2024-12-02 08:55:34,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:55:34,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2037726880, now seen corresponding path program 2 times [2024-12-02 08:55:34,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:55:34,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853682329] [2024-12-02 08:55:34,582 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:55:34,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:55:35,705 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:55:35,706 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:55:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2024-12-02 08:55:39,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:55:39,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853682329] [2024-12-02 08:55:39,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853682329] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:55:39,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304410795] [2024-12-02 08:55:39,002 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:55:39,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:55:39,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:55:39,004 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:55:39,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62688011-b5c8-4666-8018-04d75b6491b6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process