./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--class--cdc-wdm.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6fbcf05da5228307460c10a1ab2d8431ff74359811f7e2c9b55e8eaa9db8f14c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:54:50,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:54:50,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:54:50,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:54:50,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:54:50,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:54:50,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:54:50,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:54:50,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:54:50,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:54:50,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:54:50,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:54:50,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:54:50,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:54:50,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:54:50,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:54:50,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:54:50,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:54:50,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:54:50,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:54:50,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:54:50,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:54:50,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:54:50,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:54:50,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:54:50,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:54:50,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:54:50,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:54:50,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:54:50,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:54:50,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:54:50,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:54:50,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:54:50,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:54:50,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:54:50,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:54:50,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:54:50,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:54:50,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:54:50,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:54:50,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:54:50,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:54:50,850 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:54:50,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:54:50,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:54:50,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:54:50,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:54:50,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:54:50,860 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:54:50,860 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:54:50,860 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:54:50,860 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:54:50,861 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:54:50,862 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:54:50,862 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:54:50,862 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:54:50,862 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:54:50,863 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:54:50,863 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:54:50,863 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:54:50,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:54:50,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:54:50,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:54:50,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:54:50,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:54:50,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:54:50,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:54:50,866 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:54:50,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:54:50,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:54:50,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:54:50,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:54:50,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:54:50,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:54:50,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:54:50,870 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:54:50,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:54:50,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:54:50,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:54:50,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:54:50,871 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fbcf05da5228307460c10a1ab2d8431ff74359811f7e2c9b55e8eaa9db8f14c [2021-11-21 01:54:51,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:54:51,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:54:51,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:54:51,329 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:54:51,330 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:54:51,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i [2021-11-21 01:54:51,421 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/data/b24fc4655/04b5baca788e4108a038cc34d070442c/FLAG9fa2526b6 [2021-11-21 01:54:52,697 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:54:52,697 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i [2021-11-21 01:54:52,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/data/b24fc4655/04b5baca788e4108a038cc34d070442c/FLAG9fa2526b6 [2021-11-21 01:54:52,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/data/b24fc4655/04b5baca788e4108a038cc34d070442c [2021-11-21 01:54:52,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:54:52,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:54:52,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:54:52,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:54:52,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:54:52,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:54:52" (1/1) ... [2021-11-21 01:54:52,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35090f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:52, skipping insertion in model container [2021-11-21 01:54:52,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:54:52" (1/1) ... [2021-11-21 01:54:52,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:54:53,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:54:57,294 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[307309,307322] [2021-11-21 01:54:57,297 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[307454,307467] [2021-11-21 01:54:57,298 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[307600,307613] [2021-11-21 01:54:57,299 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[307765,307778] [2021-11-21 01:54:57,299 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[307923,307936] [2021-11-21 01:54:57,300 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308081,308094] [2021-11-21 01:54:57,301 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308239,308252] [2021-11-21 01:54:57,301 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308399,308412] [2021-11-21 01:54:57,302 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308558,308571] [2021-11-21 01:54:57,302 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308697,308710] [2021-11-21 01:54:57,303 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308839,308852] [2021-11-21 01:54:57,304 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308988,309001] [2021-11-21 01:54:57,304 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[309127,309140] [2021-11-21 01:54:57,305 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[309282,309295] [2021-11-21 01:54:57,306 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[309442,309455] [2021-11-21 01:54:57,306 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[309593,309606] [2021-11-21 01:54:57,307 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[309744,309757] [2021-11-21 01:54:57,308 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[309896,309909] [2021-11-21 01:54:57,308 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310045,310058] [2021-11-21 01:54:57,309 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310193,310206] [2021-11-21 01:54:57,310 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310350,310363] [2021-11-21 01:54:57,310 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310499,310512] [2021-11-21 01:54:57,311 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310655,310668] [2021-11-21 01:54:57,312 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310808,310821] [2021-11-21 01:54:57,312 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310954,310967] [2021-11-21 01:54:57,313 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[311097,311110] [2021-11-21 01:54:57,314 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[311249,311262] [2021-11-21 01:54:57,315 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[311395,311408] [2021-11-21 01:54:57,315 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[311540,311553] [2021-11-21 01:54:57,316 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[311694,311707] [2021-11-21 01:54:57,317 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[311845,311858] [2021-11-21 01:54:57,317 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312000,312013] [2021-11-21 01:54:57,318 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312152,312165] [2021-11-21 01:54:57,318 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312307,312320] [2021-11-21 01:54:57,319 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312471,312484] [2021-11-21 01:54:57,320 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312627,312640] [2021-11-21 01:54:57,320 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312791,312804] [2021-11-21 01:54:57,321 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312933,312946] [2021-11-21 01:54:57,322 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[313091,313104] [2021-11-21 01:54:57,322 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[313258,313271] [2021-11-21 01:54:57,323 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[313417,313430] [2021-11-21 01:54:57,323 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[313576,313589] [2021-11-21 01:54:57,324 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[313725,313738] [2021-11-21 01:54:57,325 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[313872,313885] [2021-11-21 01:54:57,325 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[314011,314024] [2021-11-21 01:54:57,326 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[314174,314187] [2021-11-21 01:54:57,327 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[314340,314353] [2021-11-21 01:54:57,327 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[314504,314517] [2021-11-21 01:54:57,328 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[314669,314682] [2021-11-21 01:54:57,328 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[314834,314847] [2021-11-21 01:54:57,329 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315000,315013] [2021-11-21 01:54:57,330 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315165,315178] [2021-11-21 01:54:57,330 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315332,315345] [2021-11-21 01:54:57,331 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315492,315505] [2021-11-21 01:54:57,332 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315654,315667] [2021-11-21 01:54:57,332 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315813,315826] [2021-11-21 01:54:57,333 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315959,315972] [2021-11-21 01:54:57,333 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316102,316115] [2021-11-21 01:54:57,334 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316246,316259] [2021-11-21 01:54:57,335 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316389,316402] [2021-11-21 01:54:57,335 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316533,316546] [2021-11-21 01:54:57,336 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316674,316687] [2021-11-21 01:54:57,337 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316812,316825] [2021-11-21 01:54:57,337 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316970,316983] [2021-11-21 01:54:57,338 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[317129,317142] [2021-11-21 01:54:57,338 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[317285,317298] [2021-11-21 01:54:57,339 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[317434,317447] [2021-11-21 01:54:57,340 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[317586,317599] [2021-11-21 01:54:57,340 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[317737,317750] [2021-11-21 01:54:57,341 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[317886,317899] [2021-11-21 01:54:57,341 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318038,318051] [2021-11-21 01:54:57,342 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318186,318199] [2021-11-21 01:54:57,343 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318339,318352] [2021-11-21 01:54:57,343 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318490,318503] [2021-11-21 01:54:57,344 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318640,318653] [2021-11-21 01:54:57,344 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318787,318800] [2021-11-21 01:54:57,345 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318938,318951] [2021-11-21 01:54:57,346 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[319089,319102] [2021-11-21 01:54:57,346 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[319237,319250] [2021-11-21 01:54:57,347 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[319403,319416] [2021-11-21 01:54:57,348 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[319572,319585] [2021-11-21 01:54:57,348 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[319739,319752] [2021-11-21 01:54:57,349 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[319907,319920] [2021-11-21 01:54:57,349 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[320057,320070] [2021-11-21 01:54:57,350 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[320204,320217] [2021-11-21 01:54:57,350 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[320365,320378] [2021-11-21 01:54:57,351 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[320535,320548] [2021-11-21 01:54:57,352 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[320697,320710] [2021-11-21 01:54:57,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:54:57,401 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:54:57,772 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[307309,307322] [2021-11-21 01:54:57,774 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[307454,307467] [2021-11-21 01:54:57,775 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[307600,307613] [2021-11-21 01:54:57,775 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[307765,307778] [2021-11-21 01:54:57,776 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[307923,307936] [2021-11-21 01:54:57,781 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308081,308094] [2021-11-21 01:54:57,782 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308239,308252] [2021-11-21 01:54:57,783 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308399,308412] [2021-11-21 01:54:57,783 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308558,308571] [2021-11-21 01:54:57,784 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308697,308710] [2021-11-21 01:54:57,785 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308839,308852] [2021-11-21 01:54:57,785 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[308988,309001] [2021-11-21 01:54:57,786 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[309127,309140] [2021-11-21 01:54:57,786 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[309282,309295] [2021-11-21 01:54:57,787 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[309442,309455] [2021-11-21 01:54:57,787 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[309593,309606] [2021-11-21 01:54:57,788 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[309744,309757] [2021-11-21 01:54:57,788 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[309896,309909] [2021-11-21 01:54:57,789 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310045,310058] [2021-11-21 01:54:57,789 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310193,310206] [2021-11-21 01:54:57,790 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310350,310363] [2021-11-21 01:54:57,790 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310499,310512] [2021-11-21 01:54:57,791 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310655,310668] [2021-11-21 01:54:57,792 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310808,310821] [2021-11-21 01:54:57,794 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[310954,310967] [2021-11-21 01:54:57,794 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[311097,311110] [2021-11-21 01:54:57,795 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[311249,311262] [2021-11-21 01:54:57,796 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[311395,311408] [2021-11-21 01:54:57,796 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[311540,311553] [2021-11-21 01:54:57,802 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[311694,311707] [2021-11-21 01:54:57,803 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[311845,311858] [2021-11-21 01:54:57,803 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312000,312013] [2021-11-21 01:54:57,804 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312152,312165] [2021-11-21 01:54:57,805 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312307,312320] [2021-11-21 01:54:57,806 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312471,312484] [2021-11-21 01:54:57,806 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312627,312640] [2021-11-21 01:54:57,807 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312791,312804] [2021-11-21 01:54:57,808 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[312933,312946] [2021-11-21 01:54:57,808 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[313091,313104] [2021-11-21 01:54:57,809 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[313258,313271] [2021-11-21 01:54:57,810 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[313417,313430] [2021-11-21 01:54:57,811 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[313576,313589] [2021-11-21 01:54:57,812 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[313725,313738] [2021-11-21 01:54:57,812 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[313872,313885] [2021-11-21 01:54:57,813 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[314011,314024] [2021-11-21 01:54:57,813 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[314174,314187] [2021-11-21 01:54:57,814 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[314340,314353] [2021-11-21 01:54:57,815 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[314504,314517] [2021-11-21 01:54:57,815 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[314669,314682] [2021-11-21 01:54:57,815 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[314834,314847] [2021-11-21 01:54:57,816 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315000,315013] [2021-11-21 01:54:57,816 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315165,315178] [2021-11-21 01:54:57,817 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315332,315345] [2021-11-21 01:54:57,818 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315492,315505] [2021-11-21 01:54:57,819 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315654,315667] [2021-11-21 01:54:57,820 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315813,315826] [2021-11-21 01:54:57,823 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[315959,315972] [2021-11-21 01:54:57,824 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316102,316115] [2021-11-21 01:54:57,825 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316246,316259] [2021-11-21 01:54:57,826 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316389,316402] [2021-11-21 01:54:57,827 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316533,316546] [2021-11-21 01:54:57,828 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316674,316687] [2021-11-21 01:54:57,828 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316812,316825] [2021-11-21 01:54:57,829 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[316970,316983] [2021-11-21 01:54:57,830 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[317129,317142] [2021-11-21 01:54:57,836 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[317285,317298] [2021-11-21 01:54:57,837 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[317434,317447] [2021-11-21 01:54:57,837 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[317586,317599] [2021-11-21 01:54:57,842 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[317737,317750] [2021-11-21 01:54:57,845 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[317886,317899] [2021-11-21 01:54:57,845 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318038,318051] [2021-11-21 01:54:57,846 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318186,318199] [2021-11-21 01:54:57,846 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318339,318352] [2021-11-21 01:54:57,847 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318490,318503] [2021-11-21 01:54:57,847 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318640,318653] [2021-11-21 01:54:57,847 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318787,318800] [2021-11-21 01:54:57,849 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[318938,318951] [2021-11-21 01:54:57,849 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[319089,319102] [2021-11-21 01:54:57,851 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[319237,319250] [2021-11-21 01:54:57,852 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[319403,319416] [2021-11-21 01:54:57,852 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[319572,319585] [2021-11-21 01:54:57,854 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[319739,319752] [2021-11-21 01:54:57,854 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[319907,319920] [2021-11-21 01:54:57,855 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[320057,320070] [2021-11-21 01:54:57,855 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[320204,320217] [2021-11-21 01:54:57,855 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[320365,320378] [2021-11-21 01:54:57,856 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[320535,320548] [2021-11-21 01:54:57,856 WARN L230 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_cba8f7a1-751a-47f4-a6f2-9782341c70e3/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i[320697,320710] [2021-11-21 01:54:57,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:54:58,172 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:54:58,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58 WrapperNode [2021-11-21 01:54:58,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:54:58,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:54:58,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:54:58,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:54:58,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58" (1/1) ... [2021-11-21 01:54:58,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58" (1/1) ... [2021-11-21 01:54:58,542 INFO L137 Inliner]: procedures = 592, calls = 1771, calls flagged for inlining = 263, calls inlined = 169, statements flattened = 3167 [2021-11-21 01:54:58,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:54:58,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:54:58,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:54:58,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:54:58,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58" (1/1) ... [2021-11-21 01:54:58,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58" (1/1) ... [2021-11-21 01:54:58,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58" (1/1) ... [2021-11-21 01:54:58,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58" (1/1) ... [2021-11-21 01:54:58,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58" (1/1) ... [2021-11-21 01:54:58,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58" (1/1) ... [2021-11-21 01:54:58,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58" (1/1) ... [2021-11-21 01:54:58,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:54:58,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:54:58,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:54:58,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:54:58,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58" (1/1) ... [2021-11-21 01:54:58,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:54:58,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:54:58,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:54:58,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:54:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2021-11-21 01:54:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2021-11-21 01:54:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:54:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:54:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure recover_from_urb_loss [2021-11-21 01:54:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure recover_from_urb_loss [2021-11-21 01:54:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2021-11-21 01:54:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2021-11-21 01:54:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:54:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:54:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-21 01:54:58,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-21 01:54:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-21 01:54:58,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-21 01:54:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2021-11-21 01:54:58,894 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2021-11-21 01:54:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:54:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:54:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:54:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:54:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2021-11-21 01:54:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2021-11-21 01:54:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2021-11-21 01:54:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2021-11-21 01:54:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_ioctl [2021-11-21 01:54:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_ioctl [2021-11-21 01:54:58,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:54:58,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:54:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_iuspin_of_wdm_device [2021-11-21 01:54:58,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_iuspin_of_wdm_device [2021-11-21 01:54:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:54:58,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:54:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2021-11-21 01:54:58,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2021-11-21 01:54:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:54:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-21 01:54:58,898 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-21 01:54:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-21 01:54:58,898 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-21 01:54:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:54:58,899 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:54:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2021-11-21 01:54:58,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2021-11-21 01:54:58,899 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:54:58,899 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:54:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-21 01:54:58,900 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-21 01:54:58,900 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 01:54:58,900 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 01:54:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-21 01:54:58,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-21 01:54:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:54:58,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2021-11-21 01:54:58,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2021-11-21 01:54:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:54:58,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:54:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_111 [2021-11-21 01:54:58,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_111 [2021-11-21 01:54:58,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-21 01:54:58,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-21 01:54:58,903 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2021-11-21 01:54:58,903 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2021-11-21 01:54:58,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:54:58,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2021-11-21 01:54:58,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2021-11-21 01:54:58,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-21 01:54:58,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-21 01:54:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2021-11-21 01:54:58,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2021-11-21 01:54:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-21 01:54:58,910 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-21 01:54:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_wlock_of_wdm_device [2021-11-21 01:54:58,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_wlock_of_wdm_device [2021-11-21 01:54:58,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 01:54:58,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 01:54:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure kill_urbs [2021-11-21 01:54:58,913 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_urbs [2021-11-21 01:54:58,913 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-11-21 01:54:58,913 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-11-21 01:54:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2021-11-21 01:54:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2021-11-21 01:54:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-21 01:54:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-21 01:54:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-21 01:54:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-21 01:54:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:54:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_iuspin_of_wdm_device [2021-11-21 01:54:58,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_iuspin_of_wdm_device [2021-11-21 01:54:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:54:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:54:58,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:54:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:54:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-21 01:54:58,916 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-21 01:54:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-21 01:54:58,916 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-21 01:54:58,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_irq_check_alloc_flags [2021-11-21 01:54:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_irq_check_alloc_flags [2021-11-21 01:54:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2021-11-21 01:54:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2021-11-21 01:54:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_find_device [2021-11-21 01:54:58,917 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_find_device [2021-11-21 01:54:58,917 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:54:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:54:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-11-21 01:54:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-11-21 01:54:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-21 01:54:58,918 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-21 01:54:58,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:54:58,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:54:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2021-11-21 01:54:58,919 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2021-11-21 01:54:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:54:58,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:54:58,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:54:58,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:54:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_create [2021-11-21 01:54:58,920 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_create [2021-11-21 01:54:58,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_128 [2021-11-21 01:54:58,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_128 [2021-11-21 01:54:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2021-11-21 01:54:58,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2021-11-21 01:54:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_free_urb [2021-11-21 01:54:58,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_free_urb [2021-11-21 01:54:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure clear_wdm_read_flag [2021-11-21 01:54:58,922 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_wdm_read_flag [2021-11-21 01:54:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2021-11-21 01:54:58,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2021-11-21 01:54:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:54:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:54:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:54:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-21 01:54:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-21 01:54:58,923 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_disconnect [2021-11-21 01:54:58,924 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_disconnect [2021-11-21 01:54:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:54:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:54:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_wdm_mutex [2021-11-21 01:54:58,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_wdm_mutex [2021-11-21 01:54:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 01:54:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 01:54:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-21 01:54:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-21 01:54:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-21 01:54:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-21 01:54:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_rlock_of_wdm_device [2021-11-21 01:54:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_rlock_of_wdm_device [2021-11-21 01:54:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:54:58,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:54:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:54:58,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:54:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2021-11-21 01:54:58,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2021-11-21 01:54:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_alloc_urb [2021-11-21 01:54:58,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_alloc_urb [2021-11-21 01:54:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-21 01:54:58,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-21 01:54:58,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 01:54:58,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 01:54:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2021-11-21 01:54:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2021-11-21 01:54:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2021-11-21 01:54:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2021-11-21 01:54:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-21 01:54:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-21 01:54:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:54:58,929 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:54:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_wdm_mutex [2021-11-21 01:54:58,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_wdm_mutex [2021-11-21 01:54:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-21 01:54:58,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-21 01:54:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:54:58,930 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:54:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 01:54:58,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 01:54:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:54:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-21 01:54:58,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-21 01:54:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:54:58,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:54:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_95 [2021-11-21 01:54:58,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_95 [2021-11-21 01:54:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_resume [2021-11-21 01:54:58,932 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_resume [2021-11-21 01:54:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-21 01:54:58,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-21 01:54:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_96 [2021-11-21 01:54:58,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_96 [2021-11-21 01:54:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_rlock_of_wdm_device [2021-11-21 01:54:58,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_rlock_of_wdm_device [2021-11-21 01:54:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-21 01:54:58,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-21 01:54:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:54:58,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:54:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-21 01:54:58,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-21 01:54:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:54:58,934 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:54:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:54:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_wlock_of_wdm_device [2021-11-21 01:54:58,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_wlock_of_wdm_device [2021-11-21 01:54:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_110 [2021-11-21 01:54:58,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_110 [2021-11-21 01:54:59,866 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:54:59,874 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:55:00,065 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:55:05,226 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:55:05,806 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:55:05,806 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:55:05,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:55:05 BoogieIcfgContainer [2021-11-21 01:55:05,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:55:05,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:55:05,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:55:05,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:55:05,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:54:52" (1/3) ... [2021-11-21 01:55:05,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d91a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:55:05, skipping insertion in model container [2021-11-21 01:55:05,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:54:58" (2/3) ... [2021-11-21 01:55:05,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d91a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:55:05, skipping insertion in model container [2021-11-21 01:55:05,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:55:05" (3/3) ... [2021-11-21 01:55:05,824 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--usb--class--cdc-wdm.ko.cil.i [2021-11-21 01:55:05,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:55:05,834 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-21 01:55:05,915 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:55:05,922 INFO L339 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:55:05,923 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-21 01:55:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 1104 states, 595 states have (on average 1.289075630252101) internal successors, (767), 647 states have internal predecessors, (767), 384 states have call successors, (384), 95 states have call predecessors, (384), 94 states have return successors, (379), 377 states have call predecessors, (379), 379 states have call successors, (379) [2021-11-21 01:55:06,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-21 01:55:06,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:06,019 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:55:06,020 INFO L402 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)] === [2021-11-21 01:55:06,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:06,027 INFO L85 PathProgramCache]: Analyzing trace with hash 94429867, now seen corresponding path program 1 times [2021-11-21 01:55:06,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:06,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386216046] [2021-11-21 01:55:06,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:06,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:55:06,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:06,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386216046] [2021-11-21 01:55:06,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386216046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:06,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:06,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:55:06,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92339027] [2021-11-21 01:55:06,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:06,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:06,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:06,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:06,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:07,001 INFO L87 Difference]: Start difference. First operand has 1104 states, 595 states have (on average 1.289075630252101) internal successors, (767), 647 states have internal predecessors, (767), 384 states have call successors, (384), 95 states have call predecessors, (384), 94 states have return successors, (379), 377 states have call predecessors, (379), 379 states have call successors, (379) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-21 01:55:10,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:10,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:10,838 INFO L93 Difference]: Finished difference Result 2240 states and 3239 transitions. [2021-11-21 01:55:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:10,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 51 [2021-11-21 01:55:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:10,877 INFO L225 Difference]: With dead ends: 2240 [2021-11-21 01:55:10,877 INFO L226 Difference]: Without dead ends: 1168 [2021-11-21 01:55:10,902 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:55:10,907 INFO L933 BasicCegarLoop]: 1347 mSDtfsCounter, 1454 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:10,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1457 Valid, 2786 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 347 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 01:55:10,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-11-21 01:55:11,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1158. [2021-11-21 01:55:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 624 states have (on average 1.2243589743589745) internal successors, (764), 672 states have internal predecessors, (764), 398 states have call successors, (398), 108 states have call predecessors, (398), 107 states have return successors, (396), 393 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-21 01:55:11,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1558 transitions. [2021-11-21 01:55:11,288 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1558 transitions. Word has length 51 [2021-11-21 01:55:11,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:11,289 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1558 transitions. [2021-11-21 01:55:11,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-21 01:55:11,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1558 transitions. [2021-11-21 01:55:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-21 01:55:11,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:11,294 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:55:11,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:55:11,295 INFO L402 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)] === [2021-11-21 01:55:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1135764248, now seen corresponding path program 1 times [2021-11-21 01:55:11,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:11,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470089492] [2021-11-21 01:55:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:11,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:55:11,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:11,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470089492] [2021-11-21 01:55:11,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470089492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:11,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:11,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:55:11,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527834767] [2021-11-21 01:55:11,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:11,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:11,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:11,545 INFO L87 Difference]: Start difference. First operand 1158 states and 1558 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2021-11-21 01:55:15,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:15,325 INFO L93 Difference]: Finished difference Result 1168 states and 1565 transitions. [2021-11-21 01:55:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:15,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 56 [2021-11-21 01:55:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:15,342 INFO L225 Difference]: With dead ends: 1168 [2021-11-21 01:55:15,342 INFO L226 Difference]: Without dead ends: 1166 [2021-11-21 01:55:15,343 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:55:15,345 INFO L933 BasicCegarLoop]: 1329 mSDtfsCounter, 1434 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:15,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1437 Valid, 2748 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 01:55:15,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2021-11-21 01:55:15,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1156. [2021-11-21 01:55:15,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 623 states have (on average 1.2231139646869984) internal successors, (762), 670 states have internal predecessors, (762), 398 states have call successors, (398), 108 states have call predecessors, (398), 107 states have return successors, (396), 393 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-21 01:55:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1556 transitions. [2021-11-21 01:55:15,537 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1556 transitions. Word has length 56 [2021-11-21 01:55:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:15,538 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 1556 transitions. [2021-11-21 01:55:15,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2021-11-21 01:55:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1556 transitions. [2021-11-21 01:55:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-21 01:55:15,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:15,547 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:55:15,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:55:15,548 INFO L402 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)] === [2021-11-21 01:55:15,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:15,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1973397156, now seen corresponding path program 1 times [2021-11-21 01:55:15,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:15,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458895515] [2021-11-21 01:55:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:15,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:55:15,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:15,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458895515] [2021-11-21 01:55:15,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458895515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:15,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:15,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:55:15,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364133601] [2021-11-21 01:55:15,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:15,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:15,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:15,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:15,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:15,700 INFO L87 Difference]: Start difference. First operand 1156 states and 1556 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2021-11-21 01:55:19,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:19,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:19,425 INFO L93 Difference]: Finished difference Result 1166 states and 1563 transitions. [2021-11-21 01:55:19,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:19,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 61 [2021-11-21 01:55:19,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:19,439 INFO L225 Difference]: With dead ends: 1166 [2021-11-21 01:55:19,439 INFO L226 Difference]: Without dead ends: 1164 [2021-11-21 01:55:19,440 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:55:19,442 INFO L933 BasicCegarLoop]: 1327 mSDtfsCounter, 1431 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:19,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1434 Valid, 2744 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 01:55:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2021-11-21 01:55:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1154. [2021-11-21 01:55:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 622 states have (on average 1.2218649517684887) internal successors, (760), 668 states have internal predecessors, (760), 398 states have call successors, (398), 108 states have call predecessors, (398), 107 states have return successors, (396), 393 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-21 01:55:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1554 transitions. [2021-11-21 01:55:19,548 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1554 transitions. Word has length 61 [2021-11-21 01:55:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:19,549 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 1554 transitions. [2021-11-21 01:55:19,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2021-11-21 01:55:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1554 transitions. [2021-11-21 01:55:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-21 01:55:19,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:19,554 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:55:19,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:55:19,555 INFO L402 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)] === [2021-11-21 01:55:19,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:19,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1926005456, now seen corresponding path program 1 times [2021-11-21 01:55:19,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:19,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501806528] [2021-11-21 01:55:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:19,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:55:19,824 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:19,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501806528] [2021-11-21 01:55:19,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501806528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:19,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:19,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:55:19,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584520775] [2021-11-21 01:55:19,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:19,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:19,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:19,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:19,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:19,827 INFO L87 Difference]: Start difference. First operand 1154 states and 1554 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-11-21 01:55:23,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:23,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:23,604 INFO L93 Difference]: Finished difference Result 1164 states and 1561 transitions. [2021-11-21 01:55:23,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:23,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 66 [2021-11-21 01:55:23,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:23,615 INFO L225 Difference]: With dead ends: 1164 [2021-11-21 01:55:23,615 INFO L226 Difference]: Without dead ends: 1162 [2021-11-21 01:55:23,616 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:55:23,617 INFO L933 BasicCegarLoop]: 1325 mSDtfsCounter, 1428 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:23,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 2740 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 01:55:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2021-11-21 01:55:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1152. [2021-11-21 01:55:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 621 states have (on average 1.2206119162640903) internal successors, (758), 666 states have internal predecessors, (758), 398 states have call successors, (398), 108 states have call predecessors, (398), 107 states have return successors, (396), 393 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-21 01:55:23,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1552 transitions. [2021-11-21 01:55:23,701 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1552 transitions. Word has length 66 [2021-11-21 01:55:23,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:23,702 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 1552 transitions. [2021-11-21 01:55:23,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2021-11-21 01:55:23,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1552 transitions. [2021-11-21 01:55:23,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-21 01:55:23,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:23,705 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:55:23,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:55:23,706 INFO L402 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)] === [2021-11-21 01:55:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:23,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1489284745, now seen corresponding path program 1 times [2021-11-21 01:55:23,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:23,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406053347] [2021-11-21 01:55:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:23,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:55:23,946 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:23,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406053347] [2021-11-21 01:55:23,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406053347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:23,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:23,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:55:23,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314838821] [2021-11-21 01:55:23,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:23,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:23,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:23,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:23,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:23,950 INFO L87 Difference]: Start difference. First operand 1152 states and 1552 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-21 01:55:27,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:27,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:27,845 INFO L93 Difference]: Finished difference Result 1162 states and 1559 transitions. [2021-11-21 01:55:27,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:27,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 71 [2021-11-21 01:55:27,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:27,855 INFO L225 Difference]: With dead ends: 1162 [2021-11-21 01:55:27,855 INFO L226 Difference]: Without dead ends: 1160 [2021-11-21 01:55:27,856 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:55:27,857 INFO L933 BasicCegarLoop]: 1323 mSDtfsCounter, 1425 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 2736 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:27,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1428 Valid, 2736 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 01:55:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-11-21 01:55:27,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1150. [2021-11-21 01:55:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 620 states have (on average 1.2193548387096773) internal successors, (756), 664 states have internal predecessors, (756), 398 states have call successors, (398), 108 states have call predecessors, (398), 107 states have return successors, (396), 393 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-21 01:55:27,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1550 transitions. [2021-11-21 01:55:27,939 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1550 transitions. Word has length 71 [2021-11-21 01:55:27,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:27,940 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 1550 transitions. [2021-11-21 01:55:27,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-21 01:55:27,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1550 transitions. [2021-11-21 01:55:27,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-21 01:55:27,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:27,942 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:55:27,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:55:27,943 INFO L402 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)] === [2021-11-21 01:55:27,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:27,943 INFO L85 PathProgramCache]: Analyzing trace with hash -282969295, now seen corresponding path program 1 times [2021-11-21 01:55:27,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:27,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212454693] [2021-11-21 01:55:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:27,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:55:28,080 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:28,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212454693] [2021-11-21 01:55:28,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212454693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:28,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:28,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:55:28,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327376128] [2021-11-21 01:55:28,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:28,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:28,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:28,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:28,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:28,083 INFO L87 Difference]: Start difference. First operand 1150 states and 1550 transitions. 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, (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) [2021-11-21 01:55:31,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:31,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:31,604 INFO L93 Difference]: Finished difference Result 1160 states and 1557 transitions. [2021-11-21 01:55:31,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:31,604 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, (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 76 [2021-11-21 01:55:31,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:31,614 INFO L225 Difference]: With dead ends: 1160 [2021-11-21 01:55:31,615 INFO L226 Difference]: Without dead ends: 1158 [2021-11-21 01:55:31,616 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:55:31,617 INFO L933 BasicCegarLoop]: 1321 mSDtfsCounter, 1422 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:31,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1425 Valid, 2732 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-21 01:55:31,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-11-21 01:55:31,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1148. [2021-11-21 01:55:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 619 states have (on average 1.2180936995153473) internal successors, (754), 662 states have internal predecessors, (754), 398 states have call successors, (398), 108 states have call predecessors, (398), 107 states have return successors, (396), 393 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-21 01:55:31,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1548 transitions. [2021-11-21 01:55:31,706 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1548 transitions. Word has length 76 [2021-11-21 01:55:31,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:31,707 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 1548 transitions. [2021-11-21 01:55:31,707 INFO L471 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, (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) [2021-11-21 01:55:31,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1548 transitions. [2021-11-21 01:55:31,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-21 01:55:31,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:31,709 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:55:31,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:55:31,710 INFO L402 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)] === [2021-11-21 01:55:31,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:31,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2051048945, now seen corresponding path program 1 times [2021-11-21 01:55:31,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:31,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891997122] [2021-11-21 01:55:31,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:31,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:55:31,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:31,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891997122] [2021-11-21 01:55:31,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891997122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:31,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:31,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:55:31,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128234569] [2021-11-21 01:55:31,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:31,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:31,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:31,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:31,856 INFO L87 Difference]: Start difference. First operand 1148 states and 1548 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-21 01:55:35,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:35,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:35,444 INFO L93 Difference]: Finished difference Result 1158 states and 1555 transitions. [2021-11-21 01:55:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:35,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 81 [2021-11-21 01:55:35,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:35,455 INFO L225 Difference]: With dead ends: 1158 [2021-11-21 01:55:35,455 INFO L226 Difference]: Without dead ends: 1156 [2021-11-21 01:55:35,456 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:55:35,457 INFO L933 BasicCegarLoop]: 1319 mSDtfsCounter, 1419 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:35,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 2728 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-21 01:55:35,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-21 01:55:35,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1146. [2021-11-21 01:55:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 618 states have (on average 1.2168284789644013) internal successors, (752), 660 states have internal predecessors, (752), 398 states have call successors, (398), 108 states have call predecessors, (398), 107 states have return successors, (396), 393 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-21 01:55:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1546 transitions. [2021-11-21 01:55:35,562 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1546 transitions. Word has length 81 [2021-11-21 01:55:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:35,563 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1546 transitions. [2021-11-21 01:55:35,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-21 01:55:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1546 transitions. [2021-11-21 01:55:35,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-21 01:55:35,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:35,567 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:55:35,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:55:35,568 INFO L402 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)] === [2021-11-21 01:55:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash 75724432, now seen corresponding path program 1 times [2021-11-21 01:55:35,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:35,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675828999] [2021-11-21 01:55:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:35,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:55:35,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:35,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675828999] [2021-11-21 01:55:35,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675828999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:35,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:35,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:55:35,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905700495] [2021-11-21 01:55:35,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:35,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:35,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:35,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:35,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:35,727 INFO L87 Difference]: Start difference. First operand 1146 states and 1546 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2021-11-21 01:55:39,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:39,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:39,667 INFO L93 Difference]: Finished difference Result 1156 states and 1553 transitions. [2021-11-21 01:55:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:39,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 86 [2021-11-21 01:55:39,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:39,681 INFO L225 Difference]: With dead ends: 1156 [2021-11-21 01:55:39,681 INFO L226 Difference]: Without dead ends: 1154 [2021-11-21 01:55:39,682 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:55:39,683 INFO L933 BasicCegarLoop]: 1317 mSDtfsCounter, 1420 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:39,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 2720 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 01:55:39,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2021-11-21 01:55:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1144. [2021-11-21 01:55:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 617 states have (on average 1.2155591572123177) internal successors, (750), 658 states have internal predecessors, (750), 398 states have call successors, (398), 108 states have call predecessors, (398), 107 states have return successors, (396), 393 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-21 01:55:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1544 transitions. [2021-11-21 01:55:39,766 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1544 transitions. Word has length 86 [2021-11-21 01:55:39,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:39,767 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 1544 transitions. [2021-11-21 01:55:39,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2021-11-21 01:55:39,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1544 transitions. [2021-11-21 01:55:39,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-21 01:55:39,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:39,769 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:55:39,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:55:39,770 INFO L402 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)] === [2021-11-21 01:55:39,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:39,770 INFO L85 PathProgramCache]: Analyzing trace with hash -243131949, now seen corresponding path program 1 times [2021-11-21 01:55:39,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:39,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414251634] [2021-11-21 01:55:39,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:39,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:55:39,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:39,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414251634] [2021-11-21 01:55:39,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414251634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:39,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:39,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:55:39,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034332089] [2021-11-21 01:55:39,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:39,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:39,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:39,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:39,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:39,919 INFO L87 Difference]: Start difference. First operand 1144 states and 1544 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, (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) [2021-11-21 01:55:43,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:44,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:44,008 INFO L93 Difference]: Finished difference Result 1154 states and 1551 transitions. [2021-11-21 01:55:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:44,009 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, (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 88 [2021-11-21 01:55:44,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:44,018 INFO L225 Difference]: With dead ends: 1154 [2021-11-21 01:55:44,019 INFO L226 Difference]: Without dead ends: 1152 [2021-11-21 01:55:44,020 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:55:44,020 INFO L933 BasicCegarLoop]: 1315 mSDtfsCounter, 1412 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:44,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1415 Valid, 2720 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2021-11-21 01:55:44,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-11-21 01:55:44,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1142. [2021-11-21 01:55:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 616 states have (on average 1.2142857142857142) internal successors, (748), 656 states have internal predecessors, (748), 398 states have call successors, (398), 108 states have call predecessors, (398), 107 states have return successors, (396), 393 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-21 01:55:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1542 transitions. [2021-11-21 01:55:44,136 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1542 transitions. Word has length 88 [2021-11-21 01:55:44,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:44,137 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 1542 transitions. [2021-11-21 01:55:44,137 INFO L471 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, (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) [2021-11-21 01:55:44,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1542 transitions. [2021-11-21 01:55:44,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-21 01:55:44,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:44,140 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-21 01:55:44,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:55:44,141 INFO L402 AbstractCegarLoop]: === Iteration 10 === 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)] === [2021-11-21 01:55:44,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:44,142 INFO L85 PathProgramCache]: Analyzing trace with hash -340738858, now seen corresponding path program 1 times [2021-11-21 01:55:44,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:44,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422907029] [2021-11-21 01:55:44,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:44,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-21 01:55:44,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:44,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422907029] [2021-11-21 01:55:44,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422907029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:44,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:44,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:55:44,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143514214] [2021-11-21 01:55:44,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:44,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:55:44,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:44,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:55:44,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:55:44,323 INFO L87 Difference]: Start difference. First operand 1142 states and 1542 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-21 01:55:47,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:47,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:47,508 INFO L93 Difference]: Finished difference Result 2074 states and 2783 transitions. [2021-11-21 01:55:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:55:47,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2021-11-21 01:55:47,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:47,519 INFO L225 Difference]: With dead ends: 2074 [2021-11-21 01:55:47,519 INFO L226 Difference]: Without dead ends: 1148 [2021-11-21 01:55:47,523 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:55:47,524 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 1431 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:47,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1432 Valid, 1401 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-11-21 01:55:47,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-11-21 01:55:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1138. [2021-11-21 01:55:47,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 613 states have (on average 1.2120717781402937) internal successors, (743), 652 states have internal predecessors, (743), 398 states have call successors, (398), 108 states have call predecessors, (398), 107 states have return successors, (396), 393 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-21 01:55:47,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1537 transitions. [2021-11-21 01:55:47,607 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1537 transitions. Word has length 120 [2021-11-21 01:55:47,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:47,608 INFO L470 AbstractCegarLoop]: Abstraction has 1138 states and 1537 transitions. [2021-11-21 01:55:47,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-21 01:55:47,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1537 transitions. [2021-11-21 01:55:47,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-21 01:55:47,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:47,611 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:55:47,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:55:47,611 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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)] === [2021-11-21 01:55:47,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1751139448, now seen corresponding path program 1 times [2021-11-21 01:55:47,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:47,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381241453] [2021-11-21 01:55:47,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:47,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:55:47,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:47,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381241453] [2021-11-21 01:55:47,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381241453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:47,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:47,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:55:47,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113341915] [2021-11-21 01:55:47,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:47,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:47,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:47,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:47,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:47,751 INFO L87 Difference]: Start difference. First operand 1138 states and 1537 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-21 01:55:51,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:51,398 INFO L93 Difference]: Finished difference Result 1148 states and 1544 transitions. [2021-11-21 01:55:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:51,399 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), 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 93 [2021-11-21 01:55:51,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:51,408 INFO L225 Difference]: With dead ends: 1148 [2021-11-21 01:55:51,408 INFO L226 Difference]: Without dead ends: 1146 [2021-11-21 01:55:51,409 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:55:51,410 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 1406 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:51,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 2706 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 01:55:51,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-11-21 01:55:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1136. [2021-11-21 01:55:51,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 612 states have (on average 1.2107843137254901) internal successors, (741), 650 states have internal predecessors, (741), 398 states have call successors, (398), 108 states have call predecessors, (398), 107 states have return successors, (396), 393 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-21 01:55:51,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1535 transitions. [2021-11-21 01:55:51,496 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1535 transitions. Word has length 93 [2021-11-21 01:55:51,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:51,497 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1535 transitions. [2021-11-21 01:55:51,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2021-11-21 01:55:51,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1535 transitions. [2021-11-21 01:55:51,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-21 01:55:51,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:51,500 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 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] [2021-11-21 01:55:51,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:55:51,500 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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)] === [2021-11-21 01:55:51,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:51,501 INFO L85 PathProgramCache]: Analyzing trace with hash 140400816, now seen corresponding path program 1 times [2021-11-21 01:55:51,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:51,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620264457] [2021-11-21 01:55:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:51,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:51,714 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-21 01:55:51,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:51,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620264457] [2021-11-21 01:55:51,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620264457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:51,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:51,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:55:51,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239320441] [2021-11-21 01:55:51,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:51,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:55:51,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:55:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:55:51,717 INFO L87 Difference]: Start difference. First operand 1136 states and 1535 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:55:56,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:56,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:56,135 INFO L93 Difference]: Finished difference Result 1318 states and 1716 transitions. [2021-11-21 01:55:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:55:56,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 117 [2021-11-21 01:55:56,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:56,146 INFO L225 Difference]: With dead ends: 1318 [2021-11-21 01:55:56,146 INFO L226 Difference]: Without dead ends: 1316 [2021-11-21 01:55:56,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:55:56,148 INFO L933 BasicCegarLoop]: 1388 mSDtfsCounter, 1251 mSDsluCounter, 3487 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:56,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 4470 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 602 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-11-21 01:55:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-11-21 01:55:56,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1298. [2021-11-21 01:55:56,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 703 states have (on average 1.20199146514936) internal successors, (845), 741 states have internal predecessors, (845), 430 states have call successors, (430), 147 states have call predecessors, (430), 146 states have return successors, (428), 425 states have call predecessors, (428), 428 states have call successors, (428) [2021-11-21 01:55:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1703 transitions. [2021-11-21 01:55:56,247 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1703 transitions. Word has length 117 [2021-11-21 01:55:56,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:56,248 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 1703 transitions. [2021-11-21 01:55:56,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 01:55:56,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1703 transitions. [2021-11-21 01:55:56,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-21 01:55:56,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:56,251 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 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] [2021-11-21 01:55:56,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:55:56,251 INFO L402 AbstractCegarLoop]: === Iteration 13 === 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)] === [2021-11-21 01:55:56,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:56,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1325625160, now seen corresponding path program 1 times [2021-11-21 01:55:56,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:56,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983574726] [2021-11-21 01:55:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:56,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-21 01:55:56,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:56,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983574726] [2021-11-21 01:55:56,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983574726] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:55:56,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793770802] [2021-11-21 01:55:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:56,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:55:56,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:55:56,412 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:55:56,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:55:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:57,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:55:57,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-21 01:55:57,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:55:57,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793770802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:57,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:55:57,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-21 01:55:57,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869931349] [2021-11-21 01:55:57,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:57,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:55:57,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:57,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:55:57,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:55:57,321 INFO L87 Difference]: Start difference. First operand 1298 states and 1703 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-21 01:56:00,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:00,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:00,395 INFO L93 Difference]: Finished difference Result 2377 states and 3086 transitions. [2021-11-21 01:56:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:56:00,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 125 [2021-11-21 01:56:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:00,405 INFO L225 Difference]: With dead ends: 2377 [2021-11-21 01:56:00,406 INFO L226 Difference]: Without dead ends: 1326 [2021-11-21 01:56:00,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:56:00,410 INFO L933 BasicCegarLoop]: 1316 mSDtfsCounter, 1382 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:00,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1383 Valid, 1455 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-11-21 01:56:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2021-11-21 01:56:00,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1314. [2021-11-21 01:56:00,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 710 states have (on average 1.1971830985915493) internal successors, (850), 748 states have internal predecessors, (850), 434 states have call successors, (434), 153 states have call predecessors, (434), 152 states have return successors, (432), 428 states have call predecessors, (432), 432 states have call successors, (432) [2021-11-21 01:56:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1716 transitions. [2021-11-21 01:56:00,513 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1716 transitions. Word has length 125 [2021-11-21 01:56:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:00,513 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 1716 transitions. [2021-11-21 01:56:00,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-21 01:56:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1716 transitions. [2021-11-21 01:56:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-21 01:56:00,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:00,516 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:56:00,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:56:00,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-21 01:56:00,731 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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)] === [2021-11-21 01:56:00,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:00,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1438052540, now seen corresponding path program 1 times [2021-11-21 01:56:00,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:00,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672051026] [2021-11-21 01:56:00,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:00,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:56:00,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:00,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672051026] [2021-11-21 01:56:00,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672051026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:00,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:00,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:56:00,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840948550] [2021-11-21 01:56:00,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:00,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:56:00,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:00,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:56:00,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:56:00,870 INFO L87 Difference]: Start difference. First operand 1314 states and 1716 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-21 01:56:04,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:05,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:05,077 INFO L93 Difference]: Finished difference Result 1324 states and 1723 transitions. [2021-11-21 01:56:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:56:05,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 98 [2021-11-21 01:56:05,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:05,102 INFO L225 Difference]: With dead ends: 1324 [2021-11-21 01:56:05,102 INFO L226 Difference]: Without dead ends: 1322 [2021-11-21 01:56:05,103 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:56:05,104 INFO L933 BasicCegarLoop]: 1301 mSDtfsCounter, 1398 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:05,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1401 Valid, 2692 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-21 01:56:05,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2021-11-21 01:56:05,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1312. [2021-11-21 01:56:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 709 states have (on average 1.1960507757404795) internal successors, (848), 746 states have internal predecessors, (848), 434 states have call successors, (434), 153 states have call predecessors, (434), 152 states have return successors, (432), 428 states have call predecessors, (432), 432 states have call successors, (432) [2021-11-21 01:56:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1714 transitions. [2021-11-21 01:56:05,212 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1714 transitions. Word has length 98 [2021-11-21 01:56:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:05,213 INFO L470 AbstractCegarLoop]: Abstraction has 1312 states and 1714 transitions. [2021-11-21 01:56:05,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-21 01:56:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1714 transitions. [2021-11-21 01:56:05,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-21 01:56:05,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:05,216 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-21 01:56:05,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 01:56:05,217 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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)] === [2021-11-21 01:56:05,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:05,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2114428436, now seen corresponding path program 1 times [2021-11-21 01:56:05,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:05,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103416972] [2021-11-21 01:56:05,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:05,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-21 01:56:05,439 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:05,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103416972] [2021-11-21 01:56:05,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103416972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:05,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:05,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:56:05,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415384525] [2021-11-21 01:56:05,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:05,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:56:05,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:56:05,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:56:05,444 INFO L87 Difference]: Start difference. First operand 1312 states and 1714 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-11-21 01:56:11,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:11,978 INFO L93 Difference]: Finished difference Result 1322 states and 1721 transitions. [2021-11-21 01:56:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:56:11,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 130 [2021-11-21 01:56:11,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:11,988 INFO L225 Difference]: With dead ends: 1322 [2021-11-21 01:56:11,989 INFO L226 Difference]: Without dead ends: 1320 [2021-11-21 01:56:11,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:56:11,990 INFO L933 BasicCegarLoop]: 1300 mSDtfsCounter, 1388 mSDsluCounter, 3746 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 4545 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:11,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1394 Valid, 4545 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1418 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-21 01:56:11,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-11-21 01:56:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1310. [2021-11-21 01:56:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 708 states have (on average 1.1935028248587571) internal successors, (845), 744 states have internal predecessors, (845), 434 states have call successors, (434), 153 states have call predecessors, (434), 152 states have return successors, (432), 428 states have call predecessors, (432), 432 states have call successors, (432) [2021-11-21 01:56:12,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1711 transitions. [2021-11-21 01:56:12,102 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1711 transitions. Word has length 130 [2021-11-21 01:56:12,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:12,103 INFO L470 AbstractCegarLoop]: Abstraction has 1310 states and 1711 transitions. [2021-11-21 01:56:12,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-11-21 01:56:12,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1711 transitions. [2021-11-21 01:56:12,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-21 01:56:12,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:12,106 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:56:12,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 01:56:12,106 INFO L402 AbstractCegarLoop]: === Iteration 16 === 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)] === [2021-11-21 01:56:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:12,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2056108188, now seen corresponding path program 1 times [2021-11-21 01:56:12,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:12,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044823570] [2021-11-21 01:56:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:12,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:56:12,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:12,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044823570] [2021-11-21 01:56:12,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044823570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:12,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:12,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:56:12,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796987883] [2021-11-21 01:56:12,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:12,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:56:12,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:12,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:56:12,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:56:12,220 INFO L87 Difference]: Start difference. First operand 1310 states and 1711 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-21 01:56:15,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:16,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:16,076 INFO L93 Difference]: Finished difference Result 1320 states and 1718 transitions. [2021-11-21 01:56:16,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:56:16,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 103 [2021-11-21 01:56:16,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:16,088 INFO L225 Difference]: With dead ends: 1320 [2021-11-21 01:56:16,088 INFO L226 Difference]: Without dead ends: 1318 [2021-11-21 01:56:16,089 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:56:16,090 INFO L933 BasicCegarLoop]: 1297 mSDtfsCounter, 1393 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:16,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1396 Valid, 2684 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 01:56:16,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-11-21 01:56:16,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1308. [2021-11-21 01:56:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 707 states have (on average 1.1923620933521923) internal successors, (843), 742 states have internal predecessors, (843), 434 states have call successors, (434), 153 states have call predecessors, (434), 152 states have return successors, (432), 428 states have call predecessors, (432), 432 states have call successors, (432) [2021-11-21 01:56:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1709 transitions. [2021-11-21 01:56:16,239 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1709 transitions. Word has length 103 [2021-11-21 01:56:16,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:16,240 INFO L470 AbstractCegarLoop]: Abstraction has 1308 states and 1709 transitions. [2021-11-21 01:56:16,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-21 01:56:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1709 transitions. [2021-11-21 01:56:16,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-21 01:56:16,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:16,243 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-21 01:56:16,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 01:56:16,243 INFO L402 AbstractCegarLoop]: === Iteration 17 === 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)] === [2021-11-21 01:56:16,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:16,244 INFO L85 PathProgramCache]: Analyzing trace with hash 55327954, now seen corresponding path program 1 times [2021-11-21 01:56:16,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:16,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844757092] [2021-11-21 01:56:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:16,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-21 01:56:16,375 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:16,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844757092] [2021-11-21 01:56:16,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844757092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:16,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:16,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:56:16,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750074727] [2021-11-21 01:56:16,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:16,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:56:16,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:16,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:56:16,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:56:16,379 INFO L87 Difference]: Start difference. First operand 1308 states and 1709 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-11-21 01:56:19,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:19,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:19,435 INFO L93 Difference]: Finished difference Result 2558 states and 3356 transitions. [2021-11-21 01:56:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:56:19,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 136 [2021-11-21 01:56:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:19,445 INFO L225 Difference]: With dead ends: 2558 [2021-11-21 01:56:19,445 INFO L226 Difference]: Without dead ends: 1312 [2021-11-21 01:56:19,450 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:56:19,451 INFO L933 BasicCegarLoop]: 1293 mSDtfsCounter, 1384 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:19,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1385 Valid, 1383 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-11-21 01:56:19,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-11-21 01:56:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1302. [2021-11-21 01:56:19,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 702 states have (on average 1.188034188034188) internal successors, (834), 736 states have internal predecessors, (834), 434 states have call successors, (434), 153 states have call predecessors, (434), 152 states have return successors, (432), 428 states have call predecessors, (432), 432 states have call successors, (432) [2021-11-21 01:56:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1700 transitions. [2021-11-21 01:56:19,564 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1700 transitions. Word has length 136 [2021-11-21 01:56:19,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:19,564 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 1700 transitions. [2021-11-21 01:56:19,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-11-21 01:56:19,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1700 transitions. [2021-11-21 01:56:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-21 01:56:19,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:19,567 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:56:19,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 01:56:19,567 INFO L402 AbstractCegarLoop]: === Iteration 18 === 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)] === [2021-11-21 01:56:19,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:19,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1567222935, now seen corresponding path program 1 times [2021-11-21 01:56:19,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:19,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415032785] [2021-11-21 01:56:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:19,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:56:19,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:19,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415032785] [2021-11-21 01:56:19,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415032785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:19,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:19,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:56:19,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845834281] [2021-11-21 01:56:19,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:19,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:56:19,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:19,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:56:19,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:56:19,683 INFO L87 Difference]: Start difference. First operand 1302 states and 1700 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, (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) [2021-11-21 01:56:23,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:23,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:23,408 INFO L93 Difference]: Finished difference Result 1312 states and 1707 transitions. [2021-11-21 01:56:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:56:23,408 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, (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 108 [2021-11-21 01:56:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:23,415 INFO L225 Difference]: With dead ends: 1312 [2021-11-21 01:56:23,415 INFO L226 Difference]: Without dead ends: 1310 [2021-11-21 01:56:23,416 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:56:23,417 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 1385 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:23,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 2670 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 01:56:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-11-21 01:56:23,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1300. [2021-11-21 01:56:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 701 states have (on average 1.1868758915834523) internal successors, (832), 734 states have internal predecessors, (832), 434 states have call successors, (434), 153 states have call predecessors, (434), 152 states have return successors, (432), 428 states have call predecessors, (432), 432 states have call successors, (432) [2021-11-21 01:56:23,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1698 transitions. [2021-11-21 01:56:23,534 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1698 transitions. Word has length 108 [2021-11-21 01:56:23,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:23,535 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 1698 transitions. [2021-11-21 01:56:23,535 INFO L471 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, (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) [2021-11-21 01:56:23,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1698 transitions. [2021-11-21 01:56:23,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-21 01:56:23,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:23,538 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 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] [2021-11-21 01:56:23,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 01:56:23,539 INFO L402 AbstractCegarLoop]: === Iteration 19 === 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)] === [2021-11-21 01:56:23,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:23,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2059904899, now seen corresponding path program 1 times [2021-11-21 01:56:23,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:23,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817647760] [2021-11-21 01:56:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:23,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-21 01:56:23,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:23,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817647760] [2021-11-21 01:56:23,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817647760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:23,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:23,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:56:23,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976980215] [2021-11-21 01:56:23,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:23,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:56:23,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:23,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:56:23,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:56:23,677 INFO L87 Difference]: Start difference. First operand 1300 states and 1698 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:56:27,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:27,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:27,845 INFO L93 Difference]: Finished difference Result 1339 states and 1733 transitions. [2021-11-21 01:56:27,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:56:27,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 127 [2021-11-21 01:56:27,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:27,853 INFO L225 Difference]: With dead ends: 1339 [2021-11-21 01:56:27,854 INFO L226 Difference]: Without dead ends: 1337 [2021-11-21 01:56:27,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:56:27,856 INFO L933 BasicCegarLoop]: 1277 mSDtfsCounter, 1358 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:27,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1360 Valid, 3887 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 515 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2021-11-21 01:56:27,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-11-21 01:56:27,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1332. [2021-11-21 01:56:27,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 723 states have (on average 1.1839557399723375) internal successors, (856), 756 states have internal predecessors, (856), 436 states have call successors, (436), 162 states have call predecessors, (436), 160 states have return successors, (434), 429 states have call predecessors, (434), 434 states have call successors, (434) [2021-11-21 01:56:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1726 transitions. [2021-11-21 01:56:27,979 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1726 transitions. Word has length 127 [2021-11-21 01:56:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:27,980 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 1726 transitions. [2021-11-21 01:56:27,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:56:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1726 transitions. [2021-11-21 01:56:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-21 01:56:27,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:27,982 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:56:27,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 01:56:27,983 INFO L402 AbstractCegarLoop]: === Iteration 20 === 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)] === [2021-11-21 01:56:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash -538705087, now seen corresponding path program 1 times [2021-11-21 01:56:27,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:27,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061258532] [2021-11-21 01:56:27,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:27,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:56:28,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:28,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061258532] [2021-11-21 01:56:28,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061258532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:28,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:28,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:56:28,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568378631] [2021-11-21 01:56:28,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:28,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:56:28,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:28,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:56:28,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:56:28,098 INFO L87 Difference]: Start difference. First operand 1332 states and 1726 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-11-21 01:56:31,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:31,984 INFO L93 Difference]: Finished difference Result 1342 states and 1733 transitions. [2021-11-21 01:56:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:56:31,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 113 [2021-11-21 01:56:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:31,993 INFO L225 Difference]: With dead ends: 1342 [2021-11-21 01:56:31,993 INFO L226 Difference]: Without dead ends: 1340 [2021-11-21 01:56:31,994 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:56:31,995 INFO L933 BasicCegarLoop]: 1288 mSDtfsCounter, 1382 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:31,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1385 Valid, 2666 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 01:56:31,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2021-11-21 01:56:32,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1330. [2021-11-21 01:56:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 722 states have (on average 1.182825484764543) internal successors, (854), 754 states have internal predecessors, (854), 436 states have call successors, (436), 162 states have call predecessors, (436), 160 states have return successors, (434), 429 states have call predecessors, (434), 434 states have call successors, (434) [2021-11-21 01:56:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1724 transitions. [2021-11-21 01:56:32,119 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1724 transitions. Word has length 113 [2021-11-21 01:56:32,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:32,119 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1724 transitions. [2021-11-21 01:56:32,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-11-21 01:56:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1724 transitions. [2021-11-21 01:56:32,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-21 01:56:32,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:32,122 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:56:32,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 01:56:32,123 INFO L402 AbstractCegarLoop]: === Iteration 21 === 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)] === [2021-11-21 01:56:32,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:32,124 INFO L85 PathProgramCache]: Analyzing trace with hash 176684165, now seen corresponding path program 1 times [2021-11-21 01:56:32,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:32,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232534149] [2021-11-21 01:56:32,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:32,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:56:32,250 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:32,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232534149] [2021-11-21 01:56:32,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232534149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:32,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:32,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:56:32,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104334877] [2021-11-21 01:56:32,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:32,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:56:32,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:32,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:56:32,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:56:32,255 INFO L87 Difference]: Start difference. First operand 1330 states and 1724 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2021-11-21 01:56:35,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:36,123 INFO L93 Difference]: Finished difference Result 1340 states and 1731 transitions. [2021-11-21 01:56:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:56:36,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 118 [2021-11-21 01:56:36,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:36,134 INFO L225 Difference]: With dead ends: 1340 [2021-11-21 01:56:36,134 INFO L226 Difference]: Without dead ends: 1338 [2021-11-21 01:56:36,135 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:56:36,136 INFO L933 BasicCegarLoop]: 1286 mSDtfsCounter, 1379 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:36,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1382 Valid, 2662 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 01:56:36,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-21 01:56:36,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1328. [2021-11-21 01:56:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 721 states have (on average 1.1816920943134535) internal successors, (852), 752 states have internal predecessors, (852), 436 states have call successors, (436), 162 states have call predecessors, (436), 160 states have return successors, (434), 429 states have call predecessors, (434), 434 states have call successors, (434) [2021-11-21 01:56:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1722 transitions. [2021-11-21 01:56:36,309 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1722 transitions. Word has length 118 [2021-11-21 01:56:36,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:36,310 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 1722 transitions. [2021-11-21 01:56:36,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2021-11-21 01:56:36,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1722 transitions. [2021-11-21 01:56:36,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-21 01:56:36,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:36,313 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:56:36,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-21 01:56:36,313 INFO L402 AbstractCegarLoop]: === Iteration 22 === 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)] === [2021-11-21 01:56:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash -737342948, now seen corresponding path program 1 times [2021-11-21 01:56:36,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:36,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301710902] [2021-11-21 01:56:36,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:36,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:56:36,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:36,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301710902] [2021-11-21 01:56:36,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301710902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:36,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:36,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:56:36,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143597509] [2021-11-21 01:56:36,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:36,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:56:36,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:36,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:56:36,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:56:36,444 INFO L87 Difference]: Start difference. First operand 1328 states and 1722 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-21 01:56:40,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:40,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:40,357 INFO L93 Difference]: Finished difference Result 1338 states and 1729 transitions. [2021-11-21 01:56:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:56:40,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 123 [2021-11-21 01:56:40,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:40,368 INFO L225 Difference]: With dead ends: 1338 [2021-11-21 01:56:40,368 INFO L226 Difference]: Without dead ends: 1336 [2021-11-21 01:56:40,369 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:56:40,370 INFO L933 BasicCegarLoop]: 1284 mSDtfsCounter, 1376 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:40,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 2658 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 01:56:40,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2021-11-21 01:56:40,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1326. [2021-11-21 01:56:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 720 states have (on average 1.1805555555555556) internal successors, (850), 750 states have internal predecessors, (850), 436 states have call successors, (436), 162 states have call predecessors, (436), 160 states have return successors, (434), 429 states have call predecessors, (434), 434 states have call successors, (434) [2021-11-21 01:56:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1720 transitions. [2021-11-21 01:56:40,502 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1720 transitions. Word has length 123 [2021-11-21 01:56:40,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:40,503 INFO L470 AbstractCegarLoop]: Abstraction has 1326 states and 1720 transitions. [2021-11-21 01:56:40,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-21 01:56:40,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1720 transitions. [2021-11-21 01:56:40,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-21 01:56:40,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:40,506 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:56:40,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-21 01:56:40,507 INFO L402 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)] === [2021-11-21 01:56:40,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:40,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2003019870, now seen corresponding path program 1 times [2021-11-21 01:56:40,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:40,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833307869] [2021-11-21 01:56:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:40,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:56:40,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:40,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833307869] [2021-11-21 01:56:40,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833307869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:40,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:40,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:56:40,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218891249] [2021-11-21 01:56:40,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:40,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:56:40,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:40,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:56:40,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:56:40,620 INFO L87 Difference]: Start difference. First operand 1326 states and 1720 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-11-21 01:56:44,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:44,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:44,284 INFO L93 Difference]: Finished difference Result 1336 states and 1727 transitions. [2021-11-21 01:56:44,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:56:44,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 128 [2021-11-21 01:56:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:44,293 INFO L225 Difference]: With dead ends: 1336 [2021-11-21 01:56:44,293 INFO L226 Difference]: Without dead ends: 1334 [2021-11-21 01:56:44,294 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:56:44,295 INFO L933 BasicCegarLoop]: 1282 mSDtfsCounter, 1373 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:44,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1376 Valid, 2654 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 01:56:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-11-21 01:56:44,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1324. [2021-11-21 01:56:44,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 719 states have (on average 1.1794158553546592) internal successors, (848), 748 states have internal predecessors, (848), 436 states have call successors, (436), 162 states have call predecessors, (436), 160 states have return successors, (434), 429 states have call predecessors, (434), 434 states have call successors, (434) [2021-11-21 01:56:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1718 transitions. [2021-11-21 01:56:44,434 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1718 transitions. Word has length 128 [2021-11-21 01:56:44,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:44,435 INFO L470 AbstractCegarLoop]: Abstraction has 1324 states and 1718 transitions. [2021-11-21 01:56:44,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-11-21 01:56:44,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1718 transitions. [2021-11-21 01:56:44,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-21 01:56:44,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:44,439 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 6, 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] [2021-11-21 01:56:44,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-21 01:56:44,439 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__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)] === [2021-11-21 01:56:44,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash 722022621, now seen corresponding path program 1 times [2021-11-21 01:56:44,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:44,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113159877] [2021-11-21 01:56:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:44,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-21 01:56:44,594 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:44,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113159877] [2021-11-21 01:56:44,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113159877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:44,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:44,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:56:44,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543461945] [2021-11-21 01:56:44,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:44,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:56:44,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:44,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:56:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:56:44,597 INFO L87 Difference]: Start difference. First operand 1324 states and 1718 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:56:48,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:48,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:48,963 INFO L93 Difference]: Finished difference Result 1329 states and 1721 transitions. [2021-11-21 01:56:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:56:48,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 146 [2021-11-21 01:56:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:48,970 INFO L225 Difference]: With dead ends: 1329 [2021-11-21 01:56:48,970 INFO L226 Difference]: Without dead ends: 1327 [2021-11-21 01:56:48,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:56:48,972 INFO L933 BasicCegarLoop]: 1263 mSDtfsCounter, 38 mSDsluCounter, 4247 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 5021 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:48,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 5021 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 666 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-11-21 01:56:48,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2021-11-21 01:56:49,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1323. [2021-11-21 01:56:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 719 states have (on average 1.1752433936022253) internal successors, (845), 748 states have internal predecessors, (845), 435 states have call successors, (435), 162 states have call predecessors, (435), 160 states have return successors, (433), 428 states have call predecessors, (433), 433 states have call successors, (433) [2021-11-21 01:56:49,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1713 transitions. [2021-11-21 01:56:49,141 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1713 transitions. Word has length 146 [2021-11-21 01:56:49,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:49,142 INFO L470 AbstractCegarLoop]: Abstraction has 1323 states and 1713 transitions. [2021-11-21 01:56:49,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:56:49,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1713 transitions. [2021-11-21 01:56:49,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-21 01:56:49,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:49,145 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:56:49,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-21 01:56:49,146 INFO L402 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)] === [2021-11-21 01:56:49,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:49,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1788155554, now seen corresponding path program 1 times [2021-11-21 01:56:49,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:49,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158101160] [2021-11-21 01:56:49,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:49,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:56:49,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:49,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158101160] [2021-11-21 01:56:49,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158101160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:49,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:49,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:56:49,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660489851] [2021-11-21 01:56:49,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:49,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:56:49,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:49,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:56:49,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:56:49,258 INFO L87 Difference]: Start difference. First operand 1323 states and 1713 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2021-11-21 01:56:52,945 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:53,051 INFO L93 Difference]: Finished difference Result 1331 states and 1719 transitions. [2021-11-21 01:56:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:56:53,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 133 [2021-11-21 01:56:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:53,056 INFO L225 Difference]: With dead ends: 1331 [2021-11-21 01:56:53,056 INFO L226 Difference]: Without dead ends: 1329 [2021-11-21 01:56:53,057 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:56:53,058 INFO L933 BasicCegarLoop]: 1280 mSDtfsCounter, 1370 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:53,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1373 Valid, 2648 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-11-21 01:56:53,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-11-21 01:56:53,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1321. [2021-11-21 01:56:53,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 718 states have (on average 1.1740947075208914) internal successors, (843), 746 states have internal predecessors, (843), 435 states have call successors, (435), 162 states have call predecessors, (435), 160 states have return successors, (433), 428 states have call predecessors, (433), 433 states have call successors, (433) [2021-11-21 01:56:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1711 transitions. [2021-11-21 01:56:53,196 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1711 transitions. Word has length 133 [2021-11-21 01:56:53,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:53,196 INFO L470 AbstractCegarLoop]: Abstraction has 1321 states and 1711 transitions. [2021-11-21 01:56:53,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2021-11-21 01:56:53,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1711 transitions. [2021-11-21 01:56:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 01:56:53,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:53,200 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:56:53,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-21 01:56:53,201 INFO L402 AbstractCegarLoop]: === Iteration 26 === 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)] === [2021-11-21 01:56:53,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:53,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2051263559, now seen corresponding path program 1 times [2021-11-21 01:56:53,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:53,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062729777] [2021-11-21 01:56:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:53,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:56:53,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:53,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062729777] [2021-11-21 01:56:53,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062729777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:53,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:53,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:56:53,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066882328] [2021-11-21 01:56:53,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:53,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:56:53,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:53,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:56:53,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:56:53,349 INFO L87 Difference]: Start difference. First operand 1321 states and 1711 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, (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) [2021-11-21 01:56:57,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:56:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:56:57,361 INFO L93 Difference]: Finished difference Result 1329 states and 1717 transitions. [2021-11-21 01:56:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:56:57,361 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, (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 138 [2021-11-21 01:56:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:56:57,366 INFO L225 Difference]: With dead ends: 1329 [2021-11-21 01:56:57,366 INFO L226 Difference]: Without dead ends: 1327 [2021-11-21 01:56:57,367 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:56:57,368 INFO L933 BasicCegarLoop]: 1278 mSDtfsCounter, 1367 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:56:57,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1370 Valid, 2644 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-11-21 01:56:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2021-11-21 01:56:57,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1319. [2021-11-21 01:56:57,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 717 states have (on average 1.1729428172942817) internal successors, (841), 744 states have internal predecessors, (841), 435 states have call successors, (435), 162 states have call predecessors, (435), 160 states have return successors, (433), 428 states have call predecessors, (433), 433 states have call successors, (433) [2021-11-21 01:56:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1709 transitions. [2021-11-21 01:56:57,519 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1709 transitions. Word has length 138 [2021-11-21 01:56:57,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:56:57,520 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 1709 transitions. [2021-11-21 01:56:57,520 INFO L471 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, (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) [2021-11-21 01:56:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1709 transitions. [2021-11-21 01:56:57,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-21 01:56:57,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:56:57,524 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:56:57,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-21 01:56:57,524 INFO L402 AbstractCegarLoop]: === Iteration 27 === 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)] === [2021-11-21 01:56:57,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:56:57,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1887112693, now seen corresponding path program 1 times [2021-11-21 01:56:57,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:56:57,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172108080] [2021-11-21 01:56:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:56:57,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:56:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:56:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:56:57,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:56:57,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172108080] [2021-11-21 01:56:57,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172108080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:56:57,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:56:57,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:56:57,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716080443] [2021-11-21 01:56:57,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:56:57,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:56:57,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:56:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:56:57,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:56:57,658 INFO L87 Difference]: Start difference. First operand 1319 states and 1709 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-21 01:57:01,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:01,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:01,366 INFO L93 Difference]: Finished difference Result 1327 states and 1715 transitions. [2021-11-21 01:57:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:57:01,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 143 [2021-11-21 01:57:01,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:01,372 INFO L225 Difference]: With dead ends: 1327 [2021-11-21 01:57:01,372 INFO L226 Difference]: Without dead ends: 1325 [2021-11-21 01:57:01,373 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:57:01,373 INFO L933 BasicCegarLoop]: 1276 mSDtfsCounter, 1364 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:01,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1367 Valid, 2640 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 01:57:01,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2021-11-21 01:57:01,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1317. [2021-11-21 01:57:01,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 716 states have (on average 1.1717877094972067) internal successors, (839), 742 states have internal predecessors, (839), 435 states have call successors, (435), 162 states have call predecessors, (435), 160 states have return successors, (433), 428 states have call predecessors, (433), 433 states have call successors, (433) [2021-11-21 01:57:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1707 transitions. [2021-11-21 01:57:01,520 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1707 transitions. Word has length 143 [2021-11-21 01:57:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:01,520 INFO L470 AbstractCegarLoop]: Abstraction has 1317 states and 1707 transitions. [2021-11-21 01:57:01,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-21 01:57:01,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1707 transitions. [2021-11-21 01:57:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-21 01:57:01,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:01,525 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-21 01:57:01,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-21 01:57:01,525 INFO L402 AbstractCegarLoop]: === Iteration 28 === 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)] === [2021-11-21 01:57:01,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:01,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1738711564, now seen corresponding path program 1 times [2021-11-21 01:57:01,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:01,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528456873] [2021-11-21 01:57:01,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:01,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 01:57:01,640 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:01,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528456873] [2021-11-21 01:57:01,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528456873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:01,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:01,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:57:01,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102577159] [2021-11-21 01:57:01,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:01,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:57:01,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:01,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:57:01,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:57:01,642 INFO L87 Difference]: Start difference. First operand 1317 states and 1707 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-11-21 01:57:05,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:06,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:06,020 INFO L93 Difference]: Finished difference Result 2403 states and 3115 transitions. [2021-11-21 01:57:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:57:06,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 148 [2021-11-21 01:57:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:06,029 INFO L225 Difference]: With dead ends: 2403 [2021-11-21 01:57:06,029 INFO L226 Difference]: Without dead ends: 2275 [2021-11-21 01:57:06,034 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:57:06,034 INFO L933 BasicCegarLoop]: 1638 mSDtfsCounter, 1292 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 4435 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:06,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 4435 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 510 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-21 01:57:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2021-11-21 01:57:06,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2260. [2021-11-21 01:57:06,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 1233 states have (on average 1.1759935117599352) internal successors, (1450), 1275 states have internal predecessors, (1450), 746 states have call successors, (746), 277 states have call predecessors, (746), 275 states have return successors, (755), 737 states have call predecessors, (755), 744 states have call successors, (755) [2021-11-21 01:57:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 2951 transitions. [2021-11-21 01:57:06,299 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 2951 transitions. Word has length 148 [2021-11-21 01:57:06,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:06,300 INFO L470 AbstractCegarLoop]: Abstraction has 2260 states and 2951 transitions. [2021-11-21 01:57:06,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-11-21 01:57:06,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 2951 transitions. [2021-11-21 01:57:06,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-21 01:57:06,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:06,304 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 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] [2021-11-21 01:57:06,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-21 01:57:06,304 INFO L402 AbstractCegarLoop]: === Iteration 29 === 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)] === [2021-11-21 01:57:06,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:06,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1816666863, now seen corresponding path program 1 times [2021-11-21 01:57:06,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:06,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2686990] [2021-11-21 01:57:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:06,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-11-21 01:57:06,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:06,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2686990] [2021-11-21 01:57:06,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2686990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:06,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:06,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:57:06,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278812688] [2021-11-21 01:57:06,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:06,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:57:06,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:06,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:57:06,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:06,530 INFO L87 Difference]: Start difference. First operand 2260 states and 2951 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 01:57:11,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:11,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:11,165 INFO L93 Difference]: Finished difference Result 2280 states and 2965 transitions. [2021-11-21 01:57:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:57:11,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 166 [2021-11-21 01:57:11,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:11,173 INFO L225 Difference]: With dead ends: 2280 [2021-11-21 01:57:11,173 INFO L226 Difference]: Without dead ends: 2278 [2021-11-21 01:57:11,174 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:57:11,175 INFO L933 BasicCegarLoop]: 1336 mSDtfsCounter, 312 mSDsluCounter, 4300 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 5119 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:11,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 5119 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 712 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-21 01:57:11,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2021-11-21 01:57:11,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2268. [2021-11-21 01:57:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2268 states, 1239 states have (on average 1.1751412429378532) internal successors, (1456), 1281 states have internal predecessors, (1456), 746 states have call successors, (746), 279 states have call predecessors, (746), 277 states have return successors, (755), 737 states have call predecessors, (755), 744 states have call successors, (755) [2021-11-21 01:57:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 2957 transitions. [2021-11-21 01:57:11,413 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 2957 transitions. Word has length 166 [2021-11-21 01:57:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:11,414 INFO L470 AbstractCegarLoop]: Abstraction has 2268 states and 2957 transitions. [2021-11-21 01:57:11,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 01:57:11,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 2957 transitions. [2021-11-21 01:57:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-21 01:57:11,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:11,417 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 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, 1, 1] [2021-11-21 01:57:11,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-21 01:57:11,417 INFO L402 AbstractCegarLoop]: === Iteration 30 === 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)] === [2021-11-21 01:57:11,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:11,418 INFO L85 PathProgramCache]: Analyzing trace with hash 741765674, now seen corresponding path program 1 times [2021-11-21 01:57:11,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:11,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108406404] [2021-11-21 01:57:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:11,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-11-21 01:57:11,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:11,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108406404] [2021-11-21 01:57:11,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108406404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:11,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:11,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:57:11,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420451981] [2021-11-21 01:57:11,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:11,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:57:11,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:57:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:57:11,619 INFO L87 Difference]: Start difference. First operand 2268 states and 2957 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-21 01:57:16,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:16,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:16,907 INFO L93 Difference]: Finished difference Result 4258 states and 5682 transitions. [2021-11-21 01:57:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:57:16,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 175 [2021-11-21 01:57:16,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:16,920 INFO L225 Difference]: With dead ends: 4258 [2021-11-21 01:57:16,920 INFO L226 Difference]: Without dead ends: 2842 [2021-11-21 01:57:16,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:16,928 INFO L933 BasicCegarLoop]: 1559 mSDtfsCounter, 412 mSDsluCounter, 2974 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 272 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 4207 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:16,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 4207 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 535 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-11-21 01:57:16,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2021-11-21 01:57:17,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2274. [2021-11-21 01:57:17,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 1243 states have (on average 1.174577634754626) internal successors, (1460), 1285 states have internal predecessors, (1460), 748 states have call successors, (748), 279 states have call predecessors, (748), 277 states have return successors, (757), 739 states have call predecessors, (757), 746 states have call successors, (757) [2021-11-21 01:57:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 2965 transitions. [2021-11-21 01:57:17,266 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 2965 transitions. Word has length 175 [2021-11-21 01:57:17,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:17,266 INFO L470 AbstractCegarLoop]: Abstraction has 2274 states and 2965 transitions. [2021-11-21 01:57:17,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-21 01:57:17,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 2965 transitions. [2021-11-21 01:57:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-21 01:57:17,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:17,269 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 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, 1, 1, 1] [2021-11-21 01:57:17,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-21 01:57:17,270 INFO L402 AbstractCegarLoop]: === Iteration 31 === 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)] === [2021-11-21 01:57:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:17,271 INFO L85 PathProgramCache]: Analyzing trace with hash -902972565, now seen corresponding path program 1 times [2021-11-21 01:57:17,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:17,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680931055] [2021-11-21 01:57:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:17,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-11-21 01:57:17,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:17,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680931055] [2021-11-21 01:57:17,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680931055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:17,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:17,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:57:17,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905526969] [2021-11-21 01:57:17,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:17,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:57:17,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:17,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:57:17,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:17,464 INFO L87 Difference]: Start difference. First operand 2274 states and 2965 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 01:57:22,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:22,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:22,734 INFO L93 Difference]: Finished difference Result 3345 states and 4330 transitions. [2021-11-21 01:57:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:57:22,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 176 [2021-11-21 01:57:22,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:22,749 INFO L225 Difference]: With dead ends: 3345 [2021-11-21 01:57:22,750 INFO L226 Difference]: Without dead ends: 3343 [2021-11-21 01:57:22,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:57:22,753 INFO L933 BasicCegarLoop]: 1474 mSDtfsCounter, 1207 mSDsluCounter, 4109 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 5140 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:22,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 5140 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 637 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-11-21 01:57:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2021-11-21 01:57:23,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3324. [2021-11-21 01:57:23,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 1826 states have (on average 1.1856516976998905) internal successors, (2165), 1892 states have internal predecessors, (2165), 1068 states have call successors, (1068), 432 states have call predecessors, (1068), 424 states have return successors, (1078), 1043 states have call predecessors, (1078), 1066 states have call successors, (1078) [2021-11-21 01:57:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 4311 transitions. [2021-11-21 01:57:23,260 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 4311 transitions. Word has length 176 [2021-11-21 01:57:23,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:23,261 INFO L470 AbstractCegarLoop]: Abstraction has 3324 states and 4311 transitions. [2021-11-21 01:57:23,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 01:57:23,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 4311 transitions. [2021-11-21 01:57:23,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-21 01:57:23,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:23,265 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2021-11-21 01:57:23,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-21 01:57:23,266 INFO L402 AbstractCegarLoop]: === Iteration 32 === 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)] === [2021-11-21 01:57:23,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:23,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1622345462, now seen corresponding path program 1 times [2021-11-21 01:57:23,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:23,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078641209] [2021-11-21 01:57:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:23,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2021-11-21 01:57:23,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:23,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078641209] [2021-11-21 01:57:23,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078641209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:23,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:23,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:57:23,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749051528] [2021-11-21 01:57:23,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:23,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:57:23,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:23,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:57:23,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:23,469 INFO L87 Difference]: Start difference. First operand 3324 states and 4311 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, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 01:57:28,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:28,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:28,542 INFO L93 Difference]: Finished difference Result 3383 states and 4346 transitions. [2021-11-21 01:57:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:57:28,543 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, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2021-11-21 01:57:28,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:28,558 INFO L225 Difference]: With dead ends: 3383 [2021-11-21 01:57:28,558 INFO L226 Difference]: Without dead ends: 3381 [2021-11-21 01:57:28,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:57:28,561 INFO L933 BasicCegarLoop]: 1278 mSDtfsCounter, 1225 mSDsluCounter, 3113 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 4034 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:28,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1228 Valid, 4034 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 533 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 01:57:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2021-11-21 01:57:29,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3376. [2021-11-21 01:57:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 1856 states have (on average 1.1783405172413792) internal successors, (2187), 1922 states have internal predecessors, (2187), 1068 states have call successors, (1068), 454 states have call predecessors, (1068), 446 states have return successors, (1078), 1043 states have call predecessors, (1078), 1066 states have call successors, (1078) [2021-11-21 01:57:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4333 transitions. [2021-11-21 01:57:29,108 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4333 transitions. Word has length 202 [2021-11-21 01:57:29,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:29,109 INFO L470 AbstractCegarLoop]: Abstraction has 3376 states and 4333 transitions. [2021-11-21 01:57:29,109 INFO L471 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, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 01:57:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4333 transitions. [2021-11-21 01:57:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-21 01:57:29,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:29,113 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 01:57:29,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-21 01:57:29,114 INFO L402 AbstractCegarLoop]: === Iteration 33 === 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)] === [2021-11-21 01:57:29,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:29,114 INFO L85 PathProgramCache]: Analyzing trace with hash 554510902, now seen corresponding path program 1 times [2021-11-21 01:57:29,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:29,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876469318] [2021-11-21 01:57:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:29,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-11-21 01:57:29,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:29,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876469318] [2021-11-21 01:57:29,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876469318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:29,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:29,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:57:29,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382650799] [2021-11-21 01:57:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:29,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:57:29,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:57:29,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:29,386 INFO L87 Difference]: Start difference. First operand 3376 states and 4333 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 1 states have call successors, (33) [2021-11-21 01:57:34,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:34,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:34,956 INFO L93 Difference]: Finished difference Result 3540 states and 4482 transitions. [2021-11-21 01:57:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:57:34,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 1 states have call successors, (33) Word has length 188 [2021-11-21 01:57:34,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:34,973 INFO L225 Difference]: With dead ends: 3540 [2021-11-21 01:57:34,973 INFO L226 Difference]: Without dead ends: 3538 [2021-11-21 01:57:34,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:57:34,976 INFO L933 BasicCegarLoop]: 1404 mSDtfsCounter, 273 mSDsluCounter, 4564 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 5421 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:34,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 5421 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 756 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-21 01:57:34,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2021-11-21 01:57:35,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 3530. [2021-11-21 01:57:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 1944 states have (on average 1.1712962962962963) internal successors, (2277), 2010 states have internal predecessors, (2277), 1092 states have call successors, (1092), 500 states have call predecessors, (1092), 488 states have return successors, (1102), 1063 states have call predecessors, (1102), 1090 states have call successors, (1102) [2021-11-21 01:57:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 4471 transitions. [2021-11-21 01:57:35,551 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 4471 transitions. Word has length 188 [2021-11-21 01:57:35,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:35,552 INFO L470 AbstractCegarLoop]: Abstraction has 3530 states and 4471 transitions. [2021-11-21 01:57:35,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 2 states have call predecessors, (33), 1 states have call successors, (33) [2021-11-21 01:57:35,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 4471 transitions. [2021-11-21 01:57:35,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-21 01:57:35,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:35,557 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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] [2021-11-21 01:57:35,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-21 01:57:35,557 INFO L402 AbstractCegarLoop]: === Iteration 34 === 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)] === [2021-11-21 01:57:35,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:35,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1724132374, now seen corresponding path program 1 times [2021-11-21 01:57:35,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:35,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185008322] [2021-11-21 01:57:35,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:35,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2021-11-21 01:57:35,835 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:35,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185008322] [2021-11-21 01:57:35,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185008322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:35,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:35,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:57:35,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705869028] [2021-11-21 01:57:35,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:35,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:57:35,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:35,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:57:35,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:35,838 INFO L87 Difference]: Start difference. First operand 3530 states and 4471 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 01:57:40,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:40,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:40,914 INFO L93 Difference]: Finished difference Result 5343 states and 6659 transitions. [2021-11-21 01:57:40,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:57:40,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 222 [2021-11-21 01:57:40,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:40,935 INFO L225 Difference]: With dead ends: 5343 [2021-11-21 01:57:40,936 INFO L226 Difference]: Without dead ends: 5341 [2021-11-21 01:57:40,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:57:40,939 INFO L933 BasicCegarLoop]: 1510 mSDtfsCounter, 1165 mSDsluCounter, 4410 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 5443 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:40,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 5443 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 673 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-21 01:57:40,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2021-11-21 01:57:41,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 5319. [2021-11-21 01:57:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 2960 states have (on average 1.1672297297297298) internal successors, (3455), 3067 states have internal predecessors, (3455), 1583 states have call successors, (1583), 786 states have call predecessors, (1583), 770 states have return successors, (1597), 1535 states have call predecessors, (1597), 1581 states have call successors, (1597) [2021-11-21 01:57:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 6635 transitions. [2021-11-21 01:57:41,775 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 6635 transitions. Word has length 222 [2021-11-21 01:57:41,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:41,776 INFO L470 AbstractCegarLoop]: Abstraction has 5319 states and 6635 transitions. [2021-11-21 01:57:41,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 01:57:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 6635 transitions. [2021-11-21 01:57:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-21 01:57:41,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:41,782 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:41,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-21 01:57:41,782 INFO L402 AbstractCegarLoop]: === Iteration 35 === 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)] === [2021-11-21 01:57:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash 352099167, now seen corresponding path program 1 times [2021-11-21 01:57:41,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:41,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488448761] [2021-11-21 01:57:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:41,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2021-11-21 01:57:42,137 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:42,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488448761] [2021-11-21 01:57:42,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488448761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:42,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:42,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:57:42,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078918532] [2021-11-21 01:57:42,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:42,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:57:42,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:42,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:57:42,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:57:42,141 INFO L87 Difference]: Start difference. First operand 5319 states and 6635 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (39), 4 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-21 01:57:49,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:49,157 INFO L93 Difference]: Finished difference Result 10564 states and 13168 transitions. [2021-11-21 01:57:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:57:49,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (39), 4 states have call predecessors, (39), 3 states have call successors, (39) Word has length 232 [2021-11-21 01:57:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:49,177 INFO L225 Difference]: With dead ends: 10564 [2021-11-21 01:57:49,178 INFO L226 Difference]: Without dead ends: 5328 [2021-11-21 01:57:49,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:57:49,200 INFO L933 BasicCegarLoop]: 1258 mSDtfsCounter, 8 mSDsluCounter, 7081 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7531 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:49,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 7531 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1017 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-21 01:57:49,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2021-11-21 01:57:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 5325. [2021-11-21 01:57:50,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5325 states, 2964 states have (on average 1.167004048582996) internal successors, (3459), 3071 states have internal predecessors, (3459), 1584 states have call successors, (1584), 786 states have call predecessors, (1584), 771 states have return successors, (1599), 1537 states have call predecessors, (1599), 1582 states have call successors, (1599) [2021-11-21 01:57:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5325 states to 5325 states and 6642 transitions. [2021-11-21 01:57:50,091 INFO L78 Accepts]: Start accepts. Automaton has 5325 states and 6642 transitions. Word has length 232 [2021-11-21 01:57:50,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:50,092 INFO L470 AbstractCegarLoop]: Abstraction has 5325 states and 6642 transitions. [2021-11-21 01:57:50,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (39), 4 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-21 01:57:50,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5325 states and 6642 transitions. [2021-11-21 01:57:50,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-21 01:57:50,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:50,097 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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] [2021-11-21 01:57:50,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-21 01:57:50,097 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_assert_linux_kernel_locking_spinlock__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)] === [2021-11-21 01:57:50,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:50,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1338258439, now seen corresponding path program 1 times [2021-11-21 01:57:50,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:50,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137180693] [2021-11-21 01:57:50,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:50,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2021-11-21 01:57:50,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:57:50,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137180693] [2021-11-21 01:57:50,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137180693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:57:50,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:57:50,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:57:50,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243056914] [2021-11-21 01:57:50,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:57:50,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:57:50,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:57:50,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:57:50,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:57:50,269 INFO L87 Difference]: Start difference. First operand 5325 states and 6642 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-21 01:57:55,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:57:55,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:57:55,936 INFO L93 Difference]: Finished difference Result 5325 states and 6642 transitions. [2021-11-21 01:57:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:57:55,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 244 [2021-11-21 01:57:55,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:57:55,955 INFO L225 Difference]: With dead ends: 5325 [2021-11-21 01:57:55,956 INFO L226 Difference]: Without dead ends: 5323 [2021-11-21 01:57:55,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:57:55,960 INFO L933 BasicCegarLoop]: 1258 mSDtfsCounter, 129 mSDsluCounter, 4139 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 4904 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:57:55,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 4904 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 672 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-21 01:57:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2021-11-21 01:57:56,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 5323. [2021-11-21 01:57:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 2963 states have (on average 1.1616604792440095) internal successors, (3442), 3069 states have internal predecessors, (3442), 1584 states have call successors, (1584), 786 states have call predecessors, (1584), 771 states have return successors, (1599), 1537 states have call predecessors, (1599), 1582 states have call successors, (1599) [2021-11-21 01:57:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 6625 transitions. [2021-11-21 01:57:56,713 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 6625 transitions. Word has length 244 [2021-11-21 01:57:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:57:56,714 INFO L470 AbstractCegarLoop]: Abstraction has 5323 states and 6625 transitions. [2021-11-21 01:57:56,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-21 01:57:56,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 6625 transitions. [2021-11-21 01:57:56,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-21 01:57:56,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:57:56,721 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:57:56,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-21 01:57:56,721 INFO L402 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)] === [2021-11-21 01:57:56,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:57:56,722 INFO L85 PathProgramCache]: Analyzing trace with hash -702963410, now seen corresponding path program 1 times [2021-11-21 01:57:56,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:57:56,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383110512] [2021-11-21 01:57:56,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:56,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:57:56,795 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:57:56,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739538884] [2021-11-21 01:57:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:57:56,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:57:56,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:57:56,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:57:56,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba8f7a1-751a-47f4-a6f2-9782341c70e3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:57:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:57:58,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-21 01:57:58,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:57:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-21 01:57:59,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:58:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 13 proven. 37 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2021-11-21 01:58:00,131 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:58:00,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383110512] [2021-11-21 01:58:00,131 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:58:00,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739538884] [2021-11-21 01:58:00,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739538884] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:58:00,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1391597884] [2021-11-21 01:58:00,169 INFO L159 IcfgInterpreter]: Started Sifa with 151 locations of interest [2021-11-21 01:58:00,169 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:58:00,176 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:58:00,181 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:58:00,182 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:58:02,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:58:02,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 197 [2021-11-21 01:58:02,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:02,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 73 [2021-11-21 01:58:03,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:58:05,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:58:06,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:58:06,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:58:07,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:58:08,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:58:09,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:58:12,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:12,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:12,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 95 [2021-11-21 01:58:14,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:58:15,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:58:16,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:58:17,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-21 01:58:20,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:58:20,310 INFO L244 Elim1Store]: Index analysis took 162 ms [2021-11-21 01:58:20,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 66 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 117 [2021-11-21 01:58:20,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2021-11-21 01:58:21,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11