./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/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 2d0073111a5c7b021bc76098b9f15e3306b34538df9d4af329dd19631f32f125 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:25:34,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:25:34,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:25:34,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:25:34,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:25:34,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:25:34,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:25:34,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:25:34,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:25:34,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:25:34,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:25:34,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:25:34,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:25:34,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:25:34,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:25:34,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:25:34,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:25:34,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:25:34,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:25:34,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:25:34,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:25:34,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:25:35,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:25:35,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:25:35,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:25:35,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:25:35,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:25:35,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:25:35,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:25:35,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:25:35,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:25:35,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:25:35,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:25:35,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:25:35,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:25:35,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:25:35,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:25:35,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:25:35,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:25:35,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:25:35,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:25:35,037 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:25:35,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:25:35,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:25:35,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:25:35,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:25:35,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:25:35,097 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:25:35,097 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:25:35,097 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:25:35,098 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:25:35,098 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:25:35,099 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:25:35,099 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:25:35,100 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:25:35,100 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:25:35,100 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:25:35,100 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:25:35,101 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:25:35,101 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:25:35,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:25:35,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:25:35,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:25:35,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:25:35,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:25:35,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:25:35,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:25:35,104 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:25:35,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:25:35,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:25:35,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:25:35,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:25:35,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:25:35,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:25:35,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:25:35,106 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:25:35,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:25:35,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:25:35,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:25:35,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:25:35,107 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0073111a5c7b021bc76098b9f15e3306b34538df9d4af329dd19631f32f125 [2021-11-21 00:25:35,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:25:35,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:25:35,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:25:35,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:25:35,432 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:25:35,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i [2021-11-21 00:25:35,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/bin/utaipan-TEXQjIfE4P/data/8296725c3/b37c197a518e49dd96fe06a997d1c7ae/FLAGa2e448e9f [2021-11-21 00:25:36,571 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:25:36,572 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i [2021-11-21 00:25:36,660 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/bin/utaipan-TEXQjIfE4P/data/8296725c3/b37c197a518e49dd96fe06a997d1c7ae/FLAGa2e448e9f [2021-11-21 00:25:36,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/bin/utaipan-TEXQjIfE4P/data/8296725c3/b37c197a518e49dd96fe06a997d1c7ae [2021-11-21 00:25:36,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:25:36,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:25:36,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:25:36,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:25:36,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:25:36,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:25:36" (1/1) ... [2021-11-21 00:25:36,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6038b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:36, skipping insertion in model container [2021-11-21 00:25:36,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:25:36" (1/1) ... [2021-11-21 00:25:36,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:25:37,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:25:45,283 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[659699,659712] [2021-11-21 00:25:45,286 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[659844,659857] [2021-11-21 00:25:45,287 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[659990,660003] [2021-11-21 00:25:45,288 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660155,660168] [2021-11-21 00:25:45,288 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660313,660326] [2021-11-21 00:25:45,289 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660471,660484] [2021-11-21 00:25:45,289 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660629,660642] [2021-11-21 00:25:45,289 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660789,660802] [2021-11-21 00:25:45,290 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660948,660961] [2021-11-21 00:25:45,291 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661087,661100] [2021-11-21 00:25:45,291 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661229,661242] [2021-11-21 00:25:45,292 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661378,661391] [2021-11-21 00:25:45,292 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661517,661530] [2021-11-21 00:25:45,293 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661672,661685] [2021-11-21 00:25:45,293 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661832,661845] [2021-11-21 00:25:45,293 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661983,661996] [2021-11-21 00:25:45,294 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662134,662147] [2021-11-21 00:25:45,294 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662286,662299] [2021-11-21 00:25:45,295 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662435,662448] [2021-11-21 00:25:45,295 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662583,662596] [2021-11-21 00:25:45,296 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662740,662753] [2021-11-21 00:25:45,299 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662889,662902] [2021-11-21 00:25:45,299 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663045,663058] [2021-11-21 00:25:45,300 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663198,663211] [2021-11-21 00:25:45,300 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663344,663357] [2021-11-21 00:25:45,301 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663487,663500] [2021-11-21 00:25:45,301 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663639,663652] [2021-11-21 00:25:45,302 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663785,663798] [2021-11-21 00:25:45,302 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663930,663943] [2021-11-21 00:25:45,303 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664084,664097] [2021-11-21 00:25:45,303 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664235,664248] [2021-11-21 00:25:45,304 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664390,664403] [2021-11-21 00:25:45,304 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664542,664555] [2021-11-21 00:25:45,305 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664697,664710] [2021-11-21 00:25:45,305 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664861,664874] [2021-11-21 00:25:45,305 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665017,665030] [2021-11-21 00:25:45,306 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665181,665194] [2021-11-21 00:25:45,306 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665323,665336] [2021-11-21 00:25:45,307 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665481,665494] [2021-11-21 00:25:45,307 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665648,665661] [2021-11-21 00:25:45,308 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665807,665820] [2021-11-21 00:25:45,308 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665966,665979] [2021-11-21 00:25:45,309 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666115,666128] [2021-11-21 00:25:45,309 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666262,666275] [2021-11-21 00:25:45,310 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666401,666414] [2021-11-21 00:25:45,310 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666564,666577] [2021-11-21 00:25:45,311 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666730,666743] [2021-11-21 00:25:45,311 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666894,666907] [2021-11-21 00:25:45,311 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667059,667072] [2021-11-21 00:25:45,312 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667224,667237] [2021-11-21 00:25:45,312 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667390,667403] [2021-11-21 00:25:45,313 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667555,667568] [2021-11-21 00:25:45,313 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667722,667735] [2021-11-21 00:25:45,314 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667882,667895] [2021-11-21 00:25:45,314 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668044,668057] [2021-11-21 00:25:45,314 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668203,668216] [2021-11-21 00:25:45,315 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668349,668362] [2021-11-21 00:25:45,315 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668492,668505] [2021-11-21 00:25:45,316 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668636,668649] [2021-11-21 00:25:45,316 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668779,668792] [2021-11-21 00:25:45,317 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668923,668936] [2021-11-21 00:25:45,317 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669064,669077] [2021-11-21 00:25:45,318 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669202,669215] [2021-11-21 00:25:45,318 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669360,669373] [2021-11-21 00:25:45,345 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669519,669532] [2021-11-21 00:25:45,346 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669675,669688] [2021-11-21 00:25:45,346 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669824,669837] [2021-11-21 00:25:45,346 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669976,669989] [2021-11-21 00:25:45,347 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670127,670140] [2021-11-21 00:25:45,347 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670276,670289] [2021-11-21 00:25:45,348 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670428,670441] [2021-11-21 00:25:45,348 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670576,670589] [2021-11-21 00:25:45,349 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670729,670742] [2021-11-21 00:25:45,349 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670880,670893] [2021-11-21 00:25:45,350 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671030,671043] [2021-11-21 00:25:45,350 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671177,671190] [2021-11-21 00:25:45,351 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671328,671341] [2021-11-21 00:25:45,351 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671479,671492] [2021-11-21 00:25:45,352 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671627,671640] [2021-11-21 00:25:45,352 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671793,671806] [2021-11-21 00:25:45,366 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671962,671975] [2021-11-21 00:25:45,367 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672129,672142] [2021-11-21 00:25:45,367 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672297,672310] [2021-11-21 00:25:45,368 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672447,672460] [2021-11-21 00:25:45,368 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672594,672607] [2021-11-21 00:25:45,369 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672755,672768] [2021-11-21 00:25:45,369 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672925,672938] [2021-11-21 00:25:45,370 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[673087,673100] [2021-11-21 00:25:45,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:25:45,485 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:25:46,329 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[659699,659712] [2021-11-21 00:25:46,334 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[659844,659857] [2021-11-21 00:25:46,335 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[659990,660003] [2021-11-21 00:25:46,335 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660155,660168] [2021-11-21 00:25:46,336 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660313,660326] [2021-11-21 00:25:46,336 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660471,660484] [2021-11-21 00:25:46,336 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660629,660642] [2021-11-21 00:25:46,337 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660789,660802] [2021-11-21 00:25:46,338 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[660948,660961] [2021-11-21 00:25:46,338 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661087,661100] [2021-11-21 00:25:46,339 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661229,661242] [2021-11-21 00:25:46,340 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661378,661391] [2021-11-21 00:25:46,341 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661517,661530] [2021-11-21 00:25:46,341 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661672,661685] [2021-11-21 00:25:46,341 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661832,661845] [2021-11-21 00:25:46,342 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[661983,661996] [2021-11-21 00:25:46,342 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662134,662147] [2021-11-21 00:25:46,343 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662286,662299] [2021-11-21 00:25:46,343 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662435,662448] [2021-11-21 00:25:46,343 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662583,662596] [2021-11-21 00:25:46,344 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662740,662753] [2021-11-21 00:25:46,344 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[662889,662902] [2021-11-21 00:25:46,345 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663045,663058] [2021-11-21 00:25:46,345 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663198,663211] [2021-11-21 00:25:46,345 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663344,663357] [2021-11-21 00:25:46,346 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663487,663500] [2021-11-21 00:25:46,346 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663639,663652] [2021-11-21 00:25:46,347 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663785,663798] [2021-11-21 00:25:46,348 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[663930,663943] [2021-11-21 00:25:46,349 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664084,664097] [2021-11-21 00:25:46,349 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664235,664248] [2021-11-21 00:25:46,349 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664390,664403] [2021-11-21 00:25:46,350 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664542,664555] [2021-11-21 00:25:46,352 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664697,664710] [2021-11-21 00:25:46,353 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[664861,664874] [2021-11-21 00:25:46,353 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665017,665030] [2021-11-21 00:25:46,354 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665181,665194] [2021-11-21 00:25:46,355 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665323,665336] [2021-11-21 00:25:46,356 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665481,665494] [2021-11-21 00:25:46,356 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665648,665661] [2021-11-21 00:25:46,357 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665807,665820] [2021-11-21 00:25:46,358 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[665966,665979] [2021-11-21 00:25:46,358 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666115,666128] [2021-11-21 00:25:46,359 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666262,666275] [2021-11-21 00:25:46,359 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666401,666414] [2021-11-21 00:25:46,360 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666564,666577] [2021-11-21 00:25:46,360 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666730,666743] [2021-11-21 00:25:46,360 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[666894,666907] [2021-11-21 00:25:46,361 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667059,667072] [2021-11-21 00:25:46,361 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667224,667237] [2021-11-21 00:25:46,361 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667390,667403] [2021-11-21 00:25:46,362 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667555,667568] [2021-11-21 00:25:46,362 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667722,667735] [2021-11-21 00:25:46,363 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[667882,667895] [2021-11-21 00:25:46,364 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668044,668057] [2021-11-21 00:25:46,365 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668203,668216] [2021-11-21 00:25:46,368 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668349,668362] [2021-11-21 00:25:46,369 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668492,668505] [2021-11-21 00:25:46,369 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668636,668649] [2021-11-21 00:25:46,370 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668779,668792] [2021-11-21 00:25:46,370 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[668923,668936] [2021-11-21 00:25:46,372 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669064,669077] [2021-11-21 00:25:46,373 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669202,669215] [2021-11-21 00:25:46,373 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669360,669373] [2021-11-21 00:25:46,378 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669519,669532] [2021-11-21 00:25:46,383 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669675,669688] [2021-11-21 00:25:46,383 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669824,669837] [2021-11-21 00:25:46,384 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[669976,669989] [2021-11-21 00:25:46,385 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670127,670140] [2021-11-21 00:25:46,385 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670276,670289] [2021-11-21 00:25:46,385 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670428,670441] [2021-11-21 00:25:46,386 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670576,670589] [2021-11-21 00:25:46,386 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670729,670742] [2021-11-21 00:25:46,387 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[670880,670893] [2021-11-21 00:25:46,387 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671030,671043] [2021-11-21 00:25:46,387 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671177,671190] [2021-11-21 00:25:46,388 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671328,671341] [2021-11-21 00:25:46,388 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671479,671492] [2021-11-21 00:25:46,390 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671627,671640] [2021-11-21 00:25:46,390 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671793,671806] [2021-11-21 00:25:46,391 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[671962,671975] [2021-11-21 00:25:46,392 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672129,672142] [2021-11-21 00:25:46,392 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672297,672310] [2021-11-21 00:25:46,393 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672447,672460] [2021-11-21 00:25:46,393 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672594,672607] [2021-11-21 00:25:46,393 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672755,672768] [2021-11-21 00:25:46,394 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[672925,672938] [2021-11-21 00:25:46,394 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_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i[673087,673100] [2021-11-21 00:25:46,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:25:46,912 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:25:46,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:46 WrapperNode [2021-11-21 00:25:46,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:25:46,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:25:46,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:25:46,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:25:46,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:46" (1/1) ... [2021-11-21 00:25:47,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:46" (1/1) ... [2021-11-21 00:25:47,510 INFO L137 Inliner]: procedures = 981, calls = 6401, calls flagged for inlining = 457, calls inlined = 329, statements flattened = 12915 [2021-11-21 00:25:47,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:25:47,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:25:47,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:25:47,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:25:47,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:46" (1/1) ... [2021-11-21 00:25:47,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:46" (1/1) ... [2021-11-21 00:25:47,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:46" (1/1) ... [2021-11-21 00:25:47,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:46" (1/1) ... [2021-11-21 00:25:47,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:46" (1/1) ... [2021-11-21 00:25:47,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:46" (1/1) ... [2021-11-21 00:25:47,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:46" (1/1) ... [2021-11-21 00:25:47,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:25:47,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:25:47,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:25:47,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:25:47,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:46" (1/1) ... [2021-11-21 00:25:47,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:25:48,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:25:48,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:25:48,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3941eb28-7fc3-4d40-8cba-1ae32f25e2c6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:25:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2021-11-21 00:25:48,220 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2021-11-21 00:25:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-21 00:25:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure i_size_read [2021-11-21 00:25:48,221 INFO L138 BoogieDeclarations]: Found implementation of procedure i_size_read [2021-11-21 00:25:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_DeleteNSEntry [2021-11-21 00:25:48,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_DeleteNSEntry [2021-11-21 00:25:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure ncp__io2vol [2021-11-21 00:25:48,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp__io2vol [2021-11-21 00:25:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-21 00:25:48,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-21 00:25:48,224 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_update_dates [2021-11-21 00:25:48,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_update_dates [2021-11-21 00:25:48,224 INFO L130 BoogieDeclarations]: Found specification of procedure __ncp_start_request [2021-11-21 00:25:48,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __ncp_start_request [2021-11-21 00:25:48,225 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-21 00:25:48,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-21 00:25:48,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:25:48,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:25:48,225 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_obtain_info [2021-11-21 00:25:48,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_obtain_info [2021-11-21 00:25:48,225 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_file_write [2021-11-21 00:25:48,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_file_write [2021-11-21 00:25:48,226 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2021-11-21 00:25:48,226 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2021-11-21 00:25:48,226 INFO L130 BoogieDeclarations]: Found specification of procedure sign_packet [2021-11-21 00:25:48,226 INFO L138 BoogieDeclarations]: Found implementation of procedure sign_packet [2021-11-21 00:25:48,226 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_file_mmap_fault [2021-11-21 00:25:48,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_file_mmap_fault [2021-11-21 00:25:48,227 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_obtain_nfs_info [2021-11-21 00:25:48,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_obtain_nfs_info [2021-11-21 00:25:48,227 INFO L130 BoogieDeclarations]: Found specification of procedure grab_cache_page [2021-11-21 00:25:48,227 INFO L138 BoogieDeclarations]: Found implementation of procedure grab_cache_page [2021-11-21 00:25:48,227 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___1 [2021-11-21 00:25:48,227 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___1 [2021-11-21 00:25:48,227 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___0 [2021-11-21 00:25:48,228 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___0 [2021-11-21 00:25:48,228 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_make_open [2021-11-21 00:25:48,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_make_open [2021-11-21 00:25:48,228 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 00:25:48,228 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 00:25:48,228 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-21 00:25:48,228 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-21 00:25:48,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2021-11-21 00:25:48,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2021-11-21 00:25:48,229 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2021-11-21 00:25:48,229 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2021-11-21 00:25:48,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:25:48,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:25:48,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-21 00:25:48,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-21 00:25:48,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:25:48,230 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_ioctl [2021-11-21 00:25:48,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_ioctl [2021-11-21 00:25:48,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2021-11-21 00:25:48,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2021-11-21 00:25:48,230 INFO L130 BoogieDeclarations]: Found specification of procedure kmap [2021-11-21 00:25:48,231 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap [2021-11-21 00:25:48,231 INFO L130 BoogieDeclarations]: Found specification of procedure iunique [2021-11-21 00:25:48,231 INFO L138 BoogieDeclarations]: Found implementation of procedure iunique [2021-11-21 00:25:48,231 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_reply_le16 [2021-11-21 00:25:48,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_reply_le16 [2021-11-21 00:25:48,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:25:48,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:25:48,232 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_statfs [2021-11-21 00:25:48,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_statfs [2021-11-21 00:25:48,236 INFO L130 BoogieDeclarations]: Found specification of procedure assert_server_locked [2021-11-21 00:25:48,236 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_server_locked [2021-11-21 00:25:48,237 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-21 00:25:48,237 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-21 00:25:48,237 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_write_kernel [2021-11-21 00:25:48,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_write_kernel [2021-11-21 00:25:48,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-21 00:25:48,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-21 00:25:48,237 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_reply_byte [2021-11-21 00:25:48,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_reply_byte [2021-11-21 00:25:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:25:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-21 00:25:48,239 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-21 00:25:48,239 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~wchar_t~0~X~$Pointer$~X~int~TO~int [2021-11-21 00:25:48,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~wchar_t~0~X~$Pointer$~X~int~TO~int [2021-11-21 00:25:48,240 INFO L130 BoogieDeclarations]: Found specification of procedure i_size_write [2021-11-21 00:25:48,240 INFO L138 BoogieDeclarations]: Found implementation of procedure i_size_write [2021-11-21 00:25:48,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-21 00:25:48,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-21 00:25:48,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:25:48,240 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_destroy_inode [2021-11-21 00:25:48,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_destroy_inode [2021-11-21 00:25:48,240 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_update_attrs [2021-11-21 00:25:48,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_update_attrs [2021-11-21 00:25:48,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:25:48,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:25:48,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:25:48,241 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:25:48,241 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_destroy [2021-11-21 00:25:48,241 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_destroy [2021-11-21 00:25:48,241 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-21 00:25:48,241 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-21 00:25:48,241 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_get_volume_root [2021-11-21 00:25:48,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_get_volume_root [2021-11-21 00:25:48,242 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 00:25:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 00:25:48,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_ncp_server [2021-11-21 00:25:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_ncp_server [2021-11-21 00:25:48,242 INFO L130 BoogieDeclarations]: Found specification of procedure unload_nls [2021-11-21 00:25:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure unload_nls [2021-11-21 00:25:48,242 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_request [2021-11-21 00:25:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_request [2021-11-21 00:25:48,242 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_date_dos2unix [2021-11-21 00:25:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_date_dos2unix [2021-11-21 00:25:48,242 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_new_dentry [2021-11-21 00:25:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_new_dentry [2021-11-21 00:25:48,242 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2021-11-21 00:25:48,242 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2021-11-21 00:25:48,242 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:25:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:25:48,243 INFO L130 BoogieDeclarations]: Found specification of procedure nls_tolower [2021-11-21 00:25:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure nls_tolower [2021-11-21 00:25:48,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:25:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:25:48,243 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 00:25:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 00:25:48,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_open_mutex_of_ncp_inode_info [2021-11-21 00:25:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_open_mutex_of_ncp_inode_info [2021-11-21 00:25:48,243 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_page [2021-11-21 00:25:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_page [2021-11-21 00:25:48,244 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-21 00:25:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-21 00:25:48,244 INFO L130 BoogieDeclarations]: Found specification of procedure dir_emit [2021-11-21 00:25:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure dir_emit [2021-11-21 00:25:48,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:25:48,244 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2021-11-21 00:25:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2021-11-21 00:25:48,244 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-21 00:25:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-21 00:25:48,244 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 00:25:48,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_146 [2021-11-21 00:25:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_146 [2021-11-21 00:25:48,244 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_rmdir [2021-11-21 00:25:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_rmdir [2021-11-21 00:25:48,244 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-21 00:25:48,244 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-21 00:25:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_file_read [2021-11-21 00:25:48,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_file_read [2021-11-21 00:25:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2021-11-21 00:25:48,245 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2021-11-21 00:25:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_i_mutex_of_inode [2021-11-21 00:25:48,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_i_mutex_of_inode [2021-11-21 00:25:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_compat_ioctl [2021-11-21 00:25:48,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_compat_ioctl [2021-11-21 00:25:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure WSET_LH [2021-11-21 00:25:48,245 INFO L138 BoogieDeclarations]: Found implementation of procedure WSET_LH [2021-11-21 00:25:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:25:48,245 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:25:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure setattr_copy [2021-11-21 00:25:48,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setattr_copy [2021-11-21 00:25:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2021-11-21 00:25:48,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2021-11-21 00:25:48,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_for_read_section [2021-11-21 00:25:48,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_for_read_section [2021-11-21 00:25:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2021-11-21 00:25:48,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2021-11-21 00:25:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_reply_data [2021-11-21 00:25:48,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_reply_data [2021-11-21 00:25:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:25:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:25:48,246 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:25:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-21 00:25:48,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-21 00:25:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:25:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-21 00:25:48,246 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-21 00:25:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_d_prune [2021-11-21 00:25:48,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_d_prune [2021-11-21 00:25:48,246 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2021-11-21 00:25:48,246 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2021-11-21 00:25:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_byte [2021-11-21 00:25:48,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_byte [2021-11-21 00:25:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_init_header [2021-11-21 00:25:48,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_init_header [2021-11-21 00:25:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure pagecache_get_page [2021-11-21 00:25:48,247 INFO L138 BoogieDeclarations]: Found implementation of procedure pagecache_get_page [2021-11-21 00:25:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_mem [2021-11-21 00:25:48,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_mem [2021-11-21 00:25:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure kill_anon_super [2021-11-21 00:25:48,247 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_anon_super [2021-11-21 00:25:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_root_setup_lock_of_ncp_server [2021-11-21 00:25:48,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_root_setup_lock_of_ncp_server [2021-11-21 00:25:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_is_server_root [2021-11-21 00:25:48,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_is_server_root [2021-11-21 00:25:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_is_nfs_extras [2021-11-21 00:25:48,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_is_nfs_extras [2021-11-21 00:25:48,247 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_release [2021-11-21 00:25:48,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_release [2021-11-21 00:25:48,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-21 00:25:48,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-21 00:25:48,248 INFO L130 BoogieDeclarations]: Found specification of procedure ncpdgram_send [2021-11-21 00:25:48,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ncpdgram_send [2021-11-21 00:25:48,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2021-11-21 00:25:48,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2021-11-21 00:25:48,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2021-11-21 00:25:48,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2021-11-21 00:25:48,249 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_inode_close [2021-11-21 00:25:48,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_inode_close [2021-11-21 00:25:48,249 INFO L130 BoogieDeclarations]: Found specification of procedure NCP_FINFO [2021-11-21 00:25:48,249 INFO L138 BoogieDeclarations]: Found implementation of procedure NCP_FINFO [2021-11-21 00:25:48,249 INFO L130 BoogieDeclarations]: Found specification of procedure ncp__vol2io [2021-11-21 00:25:48,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp__vol2io [2021-11-21 00:25:48,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_creq_mutex_of_NOT_ARG_SIGN [2021-11-21 00:25:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_creq_mutex_of_NOT_ARG_SIGN [2021-11-21 00:25:48,250 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_RenameNSEntry [2021-11-21 00:25:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_RenameNSEntry [2021-11-21 00:25:48,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_i_mutex_of_inode [2021-11-21 00:25:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_i_mutex_of_inode [2021-11-21 00:25:48,250 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2021-11-21 00:25:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2021-11-21 00:25:48,250 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_notify_change [2021-11-21 00:25:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_notify_change [2021-11-21 00:25:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_75 [2021-11-21 00:25:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_75 [2021-11-21 00:25:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_reply_dword [2021-11-21 00:25:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_reply_dword [2021-11-21 00:25:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 00:25:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 00:25:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:25:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure mark_inode_dirty [2021-11-21 00:25:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure mark_inode_dirty [2021-11-21 00:25:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_update_inode [2021-11-21 00:25:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_update_inode [2021-11-21 00:25:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_del_file_or_subdir [2021-11-21 00:25:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_del_file_or_subdir [2021-11-21 00:25:48,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:25:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:25:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_create_new [2021-11-21 00:25:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_create_new [2021-11-21 00:25:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2021-11-21 00:25:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2021-11-21 00:25:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-21 00:25:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-21 00:25:48,254 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_init_request [2021-11-21 00:25:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_init_request [2021-11-21 00:25:48,254 INFO L130 BoogieDeclarations]: Found specification of procedure PageUptodate [2021-11-21 00:25:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure PageUptodate [2021-11-21 00:25:48,254 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-21 00:25:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-21 00:25:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure kunmap [2021-11-21 00:25:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure kunmap [2021-11-21 00:25:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure NCP_SBP [2021-11-21 00:25:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure NCP_SBP [2021-11-21 00:25:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure memdup_user [2021-11-21 00:25:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure memdup_user [2021-11-21 00:25:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_hash_dentry [2021-11-21 00:25:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_hash_dentry [2021-11-21 00:25:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure load_nls_default [2021-11-21 00:25:48,256 INFO L138 BoogieDeclarations]: Found implementation of procedure load_nls_default [2021-11-21 00:25:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 00:25:48,256 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 00:25:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_open_create_file_or_subdir [2021-11-21 00:25:48,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_open_create_file_or_subdir [2021-11-21 00:25:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2021-11-21 00:25:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2021-11-21 00:25:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-21 00:25:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-21 00:25:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:25:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:25:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure WVAL_LH___0 [2021-11-21 00:25:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure WVAL_LH___0 [2021-11-21 00:25:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure d_rehash [2021-11-21 00:25:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure d_rehash [2021-11-21 00:25:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_evict_inode [2021-11-21 00:25:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_evict_inode [2021-11-21 00:25:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_show_options [2021-11-21 00:25:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_show_options [2021-11-21 00:25:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2021-11-21 00:25:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2021-11-21 00:25:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2021-11-21 00:25:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2021-11-21 00:25:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure generic_file_llseek [2021-11-21 00:25:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_file_llseek [2021-11-21 00:25:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_before_release_sock [2021-11-21 00:25:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_before_release_sock [2021-11-21 00:25:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_reply_be16 [2021-11-21 00:25:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_reply_be16 [2021-11-21 00:25:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_make_closed [2021-11-21 00:25:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_make_closed [2021-11-21 00:25:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:25:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:25:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_del_file_or_subdir2 [2021-11-21 00:25:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_del_file_or_subdir2 [2021-11-21 00:25:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_modify_nfs_info [2021-11-21 00:25:48,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_modify_nfs_info [2021-11-21 00:25:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_case_sensitive [2021-11-21 00:25:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_case_sensitive [2021-11-21 00:25:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:25:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:25:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2021-11-21 00:25:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2021-11-21 00:25:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_inodecache [2021-11-21 00:25:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_inodecache [2021-11-21 00:25:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:25:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~~loff_t~0~X~~u64~0~X~int~TO~int [2021-11-21 00:25:48,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~~loff_t~0~X~~u64~0~X~int~TO~int [2021-11-21 00:25:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure __ncp_abort_request [2021-11-21 00:25:48,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __ncp_abort_request [2021-11-21 00:25:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2021-11-21 00:25:48,262 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2021-11-21 00:25:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2021-11-21 00:25:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_word [2021-11-21 00:25:48,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_word [2021-11-21 00:25:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_dword_lh [2021-11-21 00:25:48,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_dword_lh [2021-11-21 00:25:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:25:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_do_request [2021-11-21 00:25:48,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_do_request [2021-11-21 00:25:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 00:25:48,263 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 00:25:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_inode_close___3 [2021-11-21 00:25:48,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_inode_close___3 [2021-11-21 00:25:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:25:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_date_unix2dos [2021-11-21 00:25:48,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_date_unix2dos [2021-11-21 00:25:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2021-11-21 00:25:48,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2021-11-21 00:25:48,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-21 00:25:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-21 00:25:48,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:25:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:25:48,265 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_ren_or_mov_file_or_subdir [2021-11-21 00:25:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_ren_or_mov_file_or_subdir [2021-11-21 00:25:48,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2021-11-21 00:25:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2021-11-21 00:25:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2021-11-21 00:25:48,266 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2021-11-21 00:25:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_creq_mutex_of_NOT_ARG_SIGN [2021-11-21 00:25:48,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_creq_mutex_of_NOT_ARG_SIGN [2021-11-21 00:25:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_request2 [2021-11-21 00:25:48,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_request2 [2021-11-21 00:25:48,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 00:25:48,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 00:25:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_init_request_s [2021-11-21 00:25:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_init_request_s [2021-11-21 00:25:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-21 00:25:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-21 00:25:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2021-11-21 00:25:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2021-11-21 00:25:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_lock_server [2021-11-21 00:25:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_lock_server [2021-11-21 00:25:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure DSET_LH [2021-11-21 00:25:48,268 INFO L138 BoogieDeclarations]: Found implementation of procedure DSET_LH [2021-11-21 00:25:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_close_file [2021-11-21 00:25:48,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_close_file [2021-11-21 00:25:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure nwsign [2021-11-21 00:25:48,268 INFO L138 BoogieDeclarations]: Found implementation of procedure nwsign [2021-11-21 00:25:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2021-11-21 00:25:48,268 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2021-11-21 00:25:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_update_known_namespace [2021-11-21 00:25:48,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_update_known_namespace [2021-11-21 00:25:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure load_nls [2021-11-21 00:25:48,269 INFO L138 BoogieDeclarations]: Found implementation of procedure load_nls [2021-11-21 00:25:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_net_sock__double_release [2021-11-21 00:25:48,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_net_sock__double_release [2021-11-21 00:25:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure DVAL_LH___0 [2021-11-21 00:25:48,269 INFO L138 BoogieDeclarations]: Found implementation of procedure DVAL_LH___0 [2021-11-21 00:25:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_readdir [2021-11-21 00:25:48,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_readdir [2021-11-21 00:25:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2021-11-21 00:25:48,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2021-11-21 00:25:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2021-11-21 00:25:48,270 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2021-11-21 00:25:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_read_kernel [2021-11-21 00:25:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_read_kernel [2021-11-21 00:25:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-21 00:25:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-21 00:25:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure rol32 [2021-11-21 00:25:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure rol32 [2021-11-21 00:25:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:25:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:25:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:25:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2021-11-21 00:25:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2021-11-21 00:25:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:25:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:25:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_disconnect [2021-11-21 00:25:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_disconnect [2021-11-21 00:25:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure inode_permission [2021-11-21 00:25:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure inode_permission [2021-11-21 00:25:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_extract_file_info [2021-11-21 00:25:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_extract_file_info [2021-11-21 00:25:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_modify_file_or_subdir_dos_info_path [2021-11-21 00:25:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_modify_file_or_subdir_dos_info_path [2021-11-21 00:25:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_put_super [2021-11-21 00:25:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_put_super [2021-11-21 00:25:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_lookup_volume [2021-11-21 00:25:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_lookup_volume [2021-11-21 00:25:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure __ncptcp_try_send [2021-11-21 00:25:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __ncptcp_try_send [2021-11-21 00:25:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2021-11-21 00:25:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2021-11-21 00:25:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 00:25:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 00:25:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_mmap [2021-11-21 00:25:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_mmap [2021-11-21 00:25:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_be16 [2021-11-21 00:25:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_be16 [2021-11-21 00:25:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure do_send [2021-11-21 00:25:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure do_send [2021-11-21 00:25:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-21 00:25:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-21 00:25:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_pstring [2021-11-21 00:25:48,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_pstring [2021-11-21 00:25:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_root_setup_lock_of_ncp_server [2021-11-21 00:25:48,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_root_setup_lock_of_ncp_server [2021-11-21 00:25:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2021-11-21 00:25:48,276 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2021-11-21 00:25:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_obtain_mtime [2021-11-21 00:25:48,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_obtain_mtime [2021-11-21 00:25:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_unlink [2021-11-21 00:25:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_unlink [2021-11-21 00:25:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_dword [2021-11-21 00:25:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_dword [2021-11-21 00:25:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2021-11-21 00:25:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2021-11-21 00:25:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure file_accessed [2021-11-21 00:25:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure file_accessed [2021-11-21 00:25:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-11-21 00:25:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-11-21 00:25:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_age_dentry [2021-11-21 00:25:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_age_dentry [2021-11-21 00:25:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_handle_path [2021-11-21 00:25:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_handle_path [2021-11-21 00:25:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2021-11-21 00:25:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2021-11-21 00:25:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2021-11-21 00:25:48,279 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2021-11-21 00:25:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:25:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 00:25:48,279 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 00:25:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 00:25:48,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 00:25:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-21 00:25:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-21 00:25:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_iget [2021-11-21 00:25:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_iget [2021-11-21 00:25:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:25:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:25:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_fill_cache [2021-11-21 00:25:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_fill_cache [2021-11-21 00:25:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_stop_tasks [2021-11-21 00:25:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_stop_tasks [2021-11-21 00:25:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_update_dirent [2021-11-21 00:25:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_update_dirent [2021-11-21 00:25:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_instantiate [2021-11-21 00:25:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_instantiate [2021-11-21 00:25:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_single_volume [2021-11-21 00:25:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_single_volume [2021-11-21 00:25:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_symlink_readpage [2021-11-21 00:25:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_symlink_readpage [2021-11-21 00:25:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 00:25:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 00:25:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure DVAL_LH [2021-11-21 00:25:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure DVAL_LH [2021-11-21 00:25:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2021-11-21 00:25:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2021-11-21 00:25:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_74 [2021-11-21 00:25:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_74 [2021-11-21 00:25:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_reply_dword_lh [2021-11-21 00:25:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_reply_dword_lh [2021-11-21 00:25:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-21 00:25:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-21 00:25:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:25:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:25:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_siglock_of_sighand_struct [2021-11-21 00:25:48,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_siglock_of_sighand_struct [2021-11-21 00:25:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-21 00:25:48,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-21 00:25:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure SetPageUptodate [2021-11-21 00:25:48,284 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPageUptodate [2021-11-21 00:25:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2021-11-21 00:25:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2021-11-21 00:25:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-21 00:25:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-21 00:25:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_req_put [2021-11-21 00:25:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_req_put [2021-11-21 00:25:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-21 00:25:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-21 00:25:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-21 00:25:48,286 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-21 00:25:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_conn_valid [2021-11-21 00:25:48,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_conn_valid [2021-11-21 00:25:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-21 00:25:48,286 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-21 00:25:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:25:48,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:25:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_add_be32 [2021-11-21 00:25:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_add_be32 [2021-11-21 00:25:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_open_mutex_of_ncp_inode_info [2021-11-21 00:25:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_open_mutex_of_ncp_inode_info [2021-11-21 00:25:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_finish_request [2021-11-21 00:25:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_finish_request [2021-11-21 00:25:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-21 00:25:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-21 00:25:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_update_inode2 [2021-11-21 00:25:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_update_inode2 [2021-11-21 00:25:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 00:25:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 00:25:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:25:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2021-11-21 00:25:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2021-11-21 00:25:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-21 00:25:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure ncp_unlock_server [2021-11-21 00:25:48,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ncp_unlock_server [2021-11-21 00:25:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le64 [2021-11-21 00:25:48,289 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le64 [2021-11-21 00:25:49,743 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:25:49,748 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:25:49,935 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:26:03,910 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:26:06,233 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:26:06,233 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-21 00:26:06,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:26:06 BoogieIcfgContainer [2021-11-21 00:26:06,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:26:06,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:26:06,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:26:06,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:26:06,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:25:36" (1/3) ... [2021-11-21 00:26:06,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab430d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:26:06, skipping insertion in model container [2021-11-21 00:26:06,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:25:46" (2/3) ... [2021-11-21 00:26:06,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab430d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:26:06, skipping insertion in model container [2021-11-21 00:26:06,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:26:06" (3/3) ... [2021-11-21 00:26:06,250 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---fs--ncpfs--ncpfs.ko.cil.i [2021-11-21 00:26:06,257 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:26:06,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2021-11-21 00:26:06,335 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:26:06,351 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 00:26:06,351 INFO L340 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2021-11-21 00:26:06,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 3581 states, 2044 states have (on average 1.3087084148727985) internal successors, (2675), 2136 states have internal predecessors, (2675), 1261 states have call successors, (1261), 246 states have call predecessors, (1261), 245 states have return successors, (1252), 1230 states have call predecessors, (1252), 1252 states have call successors, (1252) [2021-11-21 00:26:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-21 00:26:06,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:26:06,462 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:26:06,462 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_for_read_sectionErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:26:06,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:26:06,469 INFO L85 PathProgramCache]: Analyzing trace with hash -525218347, now seen corresponding path program 1 times [2021-11-21 00:26:06,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:26:06,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713708215] [2021-11-21 00:26:06,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:26:06,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:26:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:26:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:26:07,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:26:07,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713708215] [2021-11-21 00:26:07,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713708215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:26:07,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:26:07,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:26:07,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654812542] [2021-11-21 00:26:07,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:26:07,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:26:07,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:26:07,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:26:07,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:26:07,210 INFO L87 Difference]: Start difference. First operand has 3581 states, 2044 states have (on average 1.3087084148727985) internal successors, (2675), 2136 states have internal predecessors, (2675), 1261 states have call successors, (1261), 246 states have call predecessors, (1261), 245 states have return successors, (1252), 1230 states have call predecessors, (1252), 1252 states have call successors, (1252) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:26:12,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:14,832 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 00:26:14,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:26:14,928 INFO L93 Difference]: Finished difference Result 7133 states and 10701 transitions. [2021-11-21 00:26:14,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:26:14,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2021-11-21 00:26:14,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:26:14,978 INFO L225 Difference]: With dead ends: 7133 [2021-11-21 00:26:14,978 INFO L226 Difference]: Without dead ends: 3556 [2021-11-21 00:26:15,011 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 00:26:15,015 INFO L933 BasicCegarLoop]: 4610 mSDtfsCounter, 5081 mSDsluCounter, 5102 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 9235 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:26:15,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5088 Valid, 9235 Invalid, 959 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 957 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2021-11-21 00:26:15,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2021-11-21 00:26:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3551. [2021-11-21 00:26:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3551 states, 2032 states have (on average 1.2854330708661417) internal successors, (2612), 2108 states have internal predecessors, (2612), 1240 states have call successors, (1240), 247 states have call predecessors, (1240), 246 states have return successors, (1238), 1223 states have call predecessors, (1238), 1238 states have call successors, (1238) [2021-11-21 00:26:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 5090 transitions. [2021-11-21 00:26:15,365 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 5090 transitions. Word has length 35 [2021-11-21 00:26:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:26:15,366 INFO L470 AbstractCegarLoop]: Abstraction has 3551 states and 5090 transitions. [2021-11-21 00:26:15,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:26:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 5090 transitions. [2021-11-21 00:26:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-21 00:26:15,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:26:15,370 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:26:15,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:26:15,370 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_for_read_sectionErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:26:15,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:26:15,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2080798498, now seen corresponding path program 1 times [2021-11-21 00:26:15,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:26:15,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026416357] [2021-11-21 00:26:15,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:26:15,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:26:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:26:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:26:15,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:26:15,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026416357] [2021-11-21 00:26:15,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026416357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:26:15,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:26:15,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:26:15,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623989057] [2021-11-21 00:26:15,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:26:15,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:26:15,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:26:15,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:26:15,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:26:15,593 INFO L87 Difference]: Start difference. First operand 3551 states and 5090 transitions. 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:26:21,888 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 00:26:21,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:26:21,960 INFO L93 Difference]: Finished difference Result 3553 states and 5093 transitions. [2021-11-21 00:26:21,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:26:21,961 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2021-11-21 00:26:21,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:26:21,994 INFO L225 Difference]: With dead ends: 3553 [2021-11-21 00:26:21,994 INFO L226 Difference]: Without dead ends: 3551 [2021-11-21 00:26:21,997 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 00:26:21,998 INFO L933 BasicCegarLoop]: 4582 mSDtfsCounter, 5049 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5054 SdHoareTripleChecker+Valid, 9159 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:26:21,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5054 Valid, 9159 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 951 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-11-21 00:26:22,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-11-21 00:26:22,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3549. [2021-11-21 00:26:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 2031 states have (on average 1.2850812407680945) internal successors, (2610), 2106 states have internal predecessors, (2610), 1240 states have call successors, (1240), 247 states have call predecessors, (1240), 246 states have return successors, (1238), 1223 states have call predecessors, (1238), 1238 states have call successors, (1238) [2021-11-21 00:26:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 5088 transitions. [2021-11-21 00:26:22,362 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 5088 transitions. Word has length 37 [2021-11-21 00:26:22,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:26:22,363 INFO L470 AbstractCegarLoop]: Abstraction has 3549 states and 5088 transitions. [2021-11-21 00:26:22,363 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:26:22,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 5088 transitions. [2021-11-21 00:26:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-21 00:26:22,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:26:22,371 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:26:22,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:26:22,372 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_for_read_sectionErr2ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:26:22,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:26:22,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1797732308, now seen corresponding path program 1 times [2021-11-21 00:26:22,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:26:22,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56855759] [2021-11-21 00:26:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:26:22,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:26:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:26:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:26:22,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:26:22,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56855759] [2021-11-21 00:26:22,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56855759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:26:22,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:26:22,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:26:22,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137869423] [2021-11-21 00:26:22,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:26:22,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:26:22,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:26:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:26:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:26:22,661 INFO L87 Difference]: Start difference. First operand 3549 states and 5088 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:26:27,613 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 00:26:27,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:26:27,682 INFO L93 Difference]: Finished difference Result 3551 states and 5091 transitions. [2021-11-21 00:26:27,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:26:27,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2021-11-21 00:26:27,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:26:27,712 INFO L225 Difference]: With dead ends: 3551 [2021-11-21 00:26:27,712 INFO L226 Difference]: Without dead ends: 3549 [2021-11-21 00:26:27,715 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 00:26:27,716 INFO L933 BasicCegarLoop]: 4580 mSDtfsCounter, 5041 mSDsluCounter, 5051 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5046 SdHoareTripleChecker+Valid, 9158 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:26:27,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5046 Valid, 9158 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-21 00:26:27,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2021-11-21 00:26:27,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 3547. [2021-11-21 00:26:27,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3547 states, 2030 states have (on average 1.284729064039409) internal successors, (2608), 2104 states have internal predecessors, (2608), 1240 states have call successors, (1240), 247 states have call predecessors, (1240), 246 states have return successors, (1238), 1223 states have call predecessors, (1238), 1238 states have call successors, (1238) [2021-11-21 00:26:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 5086 transitions. [2021-11-21 00:26:27,922 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 5086 transitions. Word has length 39 [2021-11-21 00:26:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:26:27,923 INFO L470 AbstractCegarLoop]: Abstraction has 3547 states and 5086 transitions. [2021-11-21 00:26:27,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:26:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 5086 transitions. [2021-11-21 00:26:27,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-21 00:26:27,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:26:27,925 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:26:27,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:26:27,926 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_for_read_sectionErr3ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:26:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:26:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1034358102, now seen corresponding path program 1 times [2021-11-21 00:26:27,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:26:27,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678973389] [2021-11-21 00:26:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:26:27,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:26:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:26:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-21 00:26:28,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:26:28,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678973389] [2021-11-21 00:26:28,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678973389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:26:28,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:26:28,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:26:28,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207917138] [2021-11-21 00:26:28,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:26:28,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:26:28,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:26:28,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:26:28,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:26:28,112 INFO L87 Difference]: Start difference. First operand 3547 states and 5086 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:26:33,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:33,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:26:33,417 INFO L93 Difference]: Finished difference Result 3549 states and 5089 transitions. [2021-11-21 00:26:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:26:33,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2021-11-21 00:26:33,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:26:33,443 INFO L225 Difference]: With dead ends: 3549 [2021-11-21 00:26:33,443 INFO L226 Difference]: Without dead ends: 3547 [2021-11-21 00:26:33,445 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 00:26:33,446 INFO L933 BasicCegarLoop]: 4578 mSDtfsCounter, 5033 mSDsluCounter, 5053 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5038 SdHoareTripleChecker+Valid, 9157 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:26:33,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5038 Valid, 9157 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-21 00:26:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2021-11-21 00:26:33,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 3545. [2021-11-21 00:26:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3545 states, 2029 states have (on average 1.2843765401675702) internal successors, (2606), 2102 states have internal predecessors, (2606), 1240 states have call successors, (1240), 247 states have call predecessors, (1240), 246 states have return successors, (1238), 1223 states have call predecessors, (1238), 1238 states have call successors, (1238) [2021-11-21 00:26:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 5084 transitions. [2021-11-21 00:26:33,641 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 5084 transitions. Word has length 41 [2021-11-21 00:26:33,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:26:33,642 INFO L470 AbstractCegarLoop]: Abstraction has 3545 states and 5084 transitions. [2021-11-21 00:26:33,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:26:33,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 5084 transitions. [2021-11-21 00:26:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-21 00:26:33,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:26:33,645 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:26:33,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:26:33,645 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:26:33,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:26:33,646 INFO L85 PathProgramCache]: Analyzing trace with hash -833602569, now seen corresponding path program 1 times [2021-11-21 00:26:33,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:26:33,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214825547] [2021-11-21 00:26:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:26:33,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:26:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:26:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:26:33,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:26:33,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214825547] [2021-11-21 00:26:33,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214825547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:26:33,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:26:33,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:26:33,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109382633] [2021-11-21 00:26:33,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:26:33,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:26:33,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:26:33,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:26:33,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:26:33,819 INFO L87 Difference]: Start difference. First operand 3545 states and 5084 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-21 00:26:36,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:40,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:42,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:44,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:44,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:26:44,837 INFO L93 Difference]: Finished difference Result 3545 states and 5084 transitions. [2021-11-21 00:26:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:26:44,837 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 49 [2021-11-21 00:26:44,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:26:44,861 INFO L225 Difference]: With dead ends: 3545 [2021-11-21 00:26:44,862 INFO L226 Difference]: Without dead ends: 3543 [2021-11-21 00:26:44,865 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 00:26:44,866 INFO L933 BasicCegarLoop]: 4576 mSDtfsCounter, 5036 mSDsluCounter, 5052 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5038 SdHoareTripleChecker+Valid, 9152 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:26:44,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5038 Valid, 9152 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2021-11-21 00:26:44,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-11-21 00:26:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3543. [2021-11-21 00:26:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 2028 states have (on average 1.2840236686390532) internal successors, (2604), 2100 states have internal predecessors, (2604), 1240 states have call successors, (1240), 247 states have call predecessors, (1240), 246 states have return successors, (1238), 1223 states have call predecessors, (1238), 1238 states have call successors, (1238) [2021-11-21 00:26:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 5082 transitions. [2021-11-21 00:26:45,069 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 5082 transitions. Word has length 49 [2021-11-21 00:26:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:26:45,070 INFO L470 AbstractCegarLoop]: Abstraction has 3543 states and 5082 transitions. [2021-11-21 00:26:45,070 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-21 00:26:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 5082 transitions. [2021-11-21 00:26:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-21 00:26:45,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:26:45,071 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:26:45,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:26:45,071 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:26:45,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:26:45,072 INFO L85 PathProgramCache]: Analyzing trace with hash -404712481, now seen corresponding path program 1 times [2021-11-21 00:26:45,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:26:45,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927079969] [2021-11-21 00:26:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:26:45,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:26:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:26:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:26:45,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:26:45,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927079969] [2021-11-21 00:26:45,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927079969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:26:45,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:26:45,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:26:45,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302244348] [2021-11-21 00:26:45,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:26:45,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:26:45,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:26:45,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:26:45,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:26:45,288 INFO L87 Difference]: Start difference. First operand 3543 states and 5082 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, (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 00:26:50,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:50,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:26:50,435 INFO L93 Difference]: Finished difference Result 3545 states and 5085 transitions. [2021-11-21 00:26:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:26:50,436 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, (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 54 [2021-11-21 00:26:50,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:26:50,464 INFO L225 Difference]: With dead ends: 3545 [2021-11-21 00:26:50,464 INFO L226 Difference]: Without dead ends: 3543 [2021-11-21 00:26:50,466 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 00:26:50,467 INFO L933 BasicCegarLoop]: 4574 mSDtfsCounter, 5032 mSDsluCounter, 5050 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5036 SdHoareTripleChecker+Valid, 9149 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:26:50,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5036 Valid, 9149 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-11-21 00:26:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-11-21 00:26:50,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3541. [2021-11-21 00:26:50,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3541 states, 2027 states have (on average 1.2836704489393191) internal successors, (2602), 2098 states have internal predecessors, (2602), 1240 states have call successors, (1240), 247 states have call predecessors, (1240), 246 states have return successors, (1238), 1223 states have call predecessors, (1238), 1238 states have call successors, (1238) [2021-11-21 00:26:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 5080 transitions. [2021-11-21 00:26:50,736 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 5080 transitions. Word has length 54 [2021-11-21 00:26:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:26:50,737 INFO L470 AbstractCegarLoop]: Abstraction has 3541 states and 5080 transitions. [2021-11-21 00:26:50,737 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, (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 00:26:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 5080 transitions. [2021-11-21 00:26:50,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-21 00:26:50,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:26:50,739 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:26:50,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:26:50,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:26:50,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:26:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1783224654, now seen corresponding path program 1 times [2021-11-21 00:26:50,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:26:50,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019636100] [2021-11-21 00:26:50,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:26:50,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:26:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:26:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:26:50,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:26:50,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019636100] [2021-11-21 00:26:50,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019636100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:26:50,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:26:50,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:26:50,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940254351] [2021-11-21 00:26:50,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:26:50,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:26:50,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:26:50,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:26:50,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:26:50,974 INFO L87 Difference]: Start difference. First operand 3541 states and 5080 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, (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 00:26:53,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:57,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:59,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:26:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:26:59,560 INFO L93 Difference]: Finished difference Result 3541 states and 5080 transitions. [2021-11-21 00:26:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:26:59,561 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, (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 59 [2021-11-21 00:26:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:26:59,588 INFO L225 Difference]: With dead ends: 3541 [2021-11-21 00:26:59,589 INFO L226 Difference]: Without dead ends: 3539 [2021-11-21 00:26:59,591 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 00:26:59,592 INFO L933 BasicCegarLoop]: 4572 mSDtfsCounter, 5027 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5031 SdHoareTripleChecker+Valid, 9144 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:26:59,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5031 Valid, 9144 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2021-11-21 00:26:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3539 states. [2021-11-21 00:26:59,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3539 to 3539. [2021-11-21 00:26:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3539 states, 2026 states have (on average 1.2833168805528135) internal successors, (2600), 2096 states have internal predecessors, (2600), 1240 states have call successors, (1240), 247 states have call predecessors, (1240), 246 states have return successors, (1238), 1223 states have call predecessors, (1238), 1238 states have call successors, (1238) [2021-11-21 00:26:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 5078 transitions. [2021-11-21 00:26:59,824 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 5078 transitions. Word has length 59 [2021-11-21 00:26:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:26:59,825 INFO L470 AbstractCegarLoop]: Abstraction has 3539 states and 5078 transitions. [2021-11-21 00:26:59,825 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, (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 00:26:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 5078 transitions. [2021-11-21 00:26:59,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-21 00:26:59,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:26:59,828 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:26:59,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:26:59,828 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:26:59,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:26:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash -374888497, now seen corresponding path program 1 times [2021-11-21 00:26:59,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:26:59,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10452937] [2021-11-21 00:26:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:26:59,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:26:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:27:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:27:00,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:27:00,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10452937] [2021-11-21 00:27:00,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10452937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:27:00,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:27:00,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:27:00,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612013822] [2021-11-21 00:27:00,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:27:00,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:27:00,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:27:00,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:27:00,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:27:00,022 INFO L87 Difference]: Start difference. First operand 3539 states and 5078 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, (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 00:27:04,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:06,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:27:06,511 INFO L93 Difference]: Finished difference Result 3539 states and 5078 transitions. [2021-11-21 00:27:06,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:27:06,512 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, (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 64 [2021-11-21 00:27:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:27:06,537 INFO L225 Difference]: With dead ends: 3539 [2021-11-21 00:27:06,537 INFO L226 Difference]: Without dead ends: 3537 [2021-11-21 00:27:06,538 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 00:27:06,539 INFO L933 BasicCegarLoop]: 4570 mSDtfsCounter, 5027 mSDsluCounter, 5046 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5029 SdHoareTripleChecker+Valid, 9140 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:27:06,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5029 Valid, 9140 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-21 00:27:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-11-21 00:27:06,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3537. [2021-11-21 00:27:06,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 2025 states have (on average 1.2829629629629629) internal successors, (2598), 2094 states have internal predecessors, (2598), 1240 states have call successors, (1240), 247 states have call predecessors, (1240), 246 states have return successors, (1238), 1223 states have call predecessors, (1238), 1238 states have call successors, (1238) [2021-11-21 00:27:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 5076 transitions. [2021-11-21 00:27:06,751 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 5076 transitions. Word has length 64 [2021-11-21 00:27:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:27:06,752 INFO L470 AbstractCegarLoop]: Abstraction has 3537 states and 5076 transitions. [2021-11-21 00:27:06,752 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, (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 00:27:06,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 5076 transitions. [2021-11-21 00:27:06,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 00:27:06,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:27:06,754 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] [2021-11-21 00:27:06,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:27:06,754 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:27:06,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:27:06,755 INFO L85 PathProgramCache]: Analyzing trace with hash -13636979, now seen corresponding path program 1 times [2021-11-21 00:27:06,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:27:06,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844862673] [2021-11-21 00:27:06,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:27:06,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:27:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:27:06,998 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 00:27:06,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:27:06,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844862673] [2021-11-21 00:27:06,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844862673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:27:06,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:27:06,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:27:06,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926128782] [2021-11-21 00:27:06,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:27:07,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:27:07,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:27:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:27:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:27:07,001 INFO L87 Difference]: Start difference. First operand 3537 states and 5076 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 00:27:15,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:17,711 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:17,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:27:17,816 INFO L93 Difference]: Finished difference Result 6271 states and 9201 transitions. [2021-11-21 00:27:17,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:27:17,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2021-11-21 00:27:17,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:27:17,864 INFO L225 Difference]: With dead ends: 6271 [2021-11-21 00:27:17,864 INFO L226 Difference]: Without dead ends: 6269 [2021-11-21 00:27:17,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 00:27:17,870 INFO L933 BasicCegarLoop]: 5993 mSDtfsCounter, 3959 mSDsluCounter, 18226 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3965 SdHoareTripleChecker+Valid, 22657 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:27:17,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3965 Valid, 22657 Invalid, 2126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2121 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2021-11-21 00:27:17,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2021-11-21 00:27:18,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 6092. [2021-11-21 00:27:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6092 states, 3593 states have (on average 1.296966323406624) internal successors, (4660), 3693 states have internal predecessors, (4660), 2054 states have call successors, (2054), 423 states have call predecessors, (2054), 419 states have return successors, (2299), 2028 states have call predecessors, (2299), 2052 states have call successors, (2299) [2021-11-21 00:27:18,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6092 states to 6092 states and 9013 transitions. [2021-11-21 00:27:18,356 INFO L78 Accepts]: Start accepts. Automaton has 6092 states and 9013 transitions. Word has length 67 [2021-11-21 00:27:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:27:18,357 INFO L470 AbstractCegarLoop]: Abstraction has 6092 states and 9013 transitions. [2021-11-21 00:27:18,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 00:27:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 6092 states and 9013 transitions. [2021-11-21 00:27:18,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-21 00:27:18,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:27:18,360 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:27:18,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:27:18,361 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:27:18,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:27:18,362 INFO L85 PathProgramCache]: Analyzing trace with hash -359530288, now seen corresponding path program 1 times [2021-11-21 00:27:18,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:27:18,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136914165] [2021-11-21 00:27:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:27:18,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:27:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:27:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:27:18,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:27:18,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136914165] [2021-11-21 00:27:18,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136914165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:27:18,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:27:18,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:27:18,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087679219] [2021-11-21 00:27:18,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:27:18,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:27:18,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:27:18,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:27:18,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:27:18,552 INFO L87 Difference]: Start difference. First operand 6092 states and 9013 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, (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 00:27:20,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:26,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:27:26,290 INFO L93 Difference]: Finished difference Result 6094 states and 9016 transitions. [2021-11-21 00:27:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:27:26,291 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, (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 69 [2021-11-21 00:27:26,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:27:26,323 INFO L225 Difference]: With dead ends: 6094 [2021-11-21 00:27:26,323 INFO L226 Difference]: Without dead ends: 6092 [2021-11-21 00:27:26,328 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 00:27:26,328 INFO L933 BasicCegarLoop]: 4568 mSDtfsCounter, 5023 mSDsluCounter, 5044 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5027 SdHoareTripleChecker+Valid, 9137 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:27:26,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5027 Valid, 9137 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2021-11-21 00:27:26,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6092 states. [2021-11-21 00:27:26,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6092 to 6092. [2021-11-21 00:27:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6092 states, 3593 states have (on average 1.2966880044531033) internal successors, (4659), 3693 states have internal predecessors, (4659), 2054 states have call successors, (2054), 423 states have call predecessors, (2054), 420 states have return successors, (2301), 2028 states have call predecessors, (2301), 2052 states have call successors, (2301) [2021-11-21 00:27:26,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6092 states to 6092 states and 9014 transitions. [2021-11-21 00:27:26,702 INFO L78 Accepts]: Start accepts. Automaton has 6092 states and 9014 transitions. Word has length 69 [2021-11-21 00:27:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:27:26,703 INFO L470 AbstractCegarLoop]: Abstraction has 6092 states and 9014 transitions. [2021-11-21 00:27:26,703 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, (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 00:27:26,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6092 states and 9014 transitions. [2021-11-21 00:27:26,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-21 00:27:26,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:27:26,705 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] [2021-11-21 00:27:26,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:27:26,705 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:27:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:27:26,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1772073539, now seen corresponding path program 1 times [2021-11-21 00:27:26,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:27:26,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996201937] [2021-11-21 00:27:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:27:26,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:27:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:27:26,945 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 00:27:26,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:27:26,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996201937] [2021-11-21 00:27:26,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996201937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:27:26,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:27:26,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:27:26,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287468630] [2021-11-21 00:27:26,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:27:26,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:27:26,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:27:26,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:27:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:27:26,948 INFO L87 Difference]: Start difference. First operand 6092 states and 9014 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 00:27:29,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:38,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:41,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:41,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:27:41,307 INFO L93 Difference]: Finished difference Result 6745 states and 9824 transitions. [2021-11-21 00:27:41,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:27:41,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 70 [2021-11-21 00:27:41,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:27:41,340 INFO L225 Difference]: With dead ends: 6745 [2021-11-21 00:27:41,340 INFO L226 Difference]: Without dead ends: 6743 [2021-11-21 00:27:41,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 00:27:41,346 INFO L933 BasicCegarLoop]: 5017 mSDtfsCounter, 4924 mSDsluCounter, 11871 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4931 SdHoareTripleChecker+Valid, 15754 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:27:41,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4931 Valid, 15754 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1668 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2021-11-21 00:27:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6743 states. [2021-11-21 00:27:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6743 to 6731. [2021-11-21 00:27:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6731 states, 3937 states have (on average 1.283718567437135) internal successors, (5054), 4043 states have internal predecessors, (5054), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 515 states have return successors, (2507), 2224 states have call predecessors, (2507), 2252 states have call successors, (2507) [2021-11-21 00:27:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6731 states to 6731 states and 9815 transitions. [2021-11-21 00:27:41,807 INFO L78 Accepts]: Start accepts. Automaton has 6731 states and 9815 transitions. Word has length 70 [2021-11-21 00:27:41,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:27:41,807 INFO L470 AbstractCegarLoop]: Abstraction has 6731 states and 9815 transitions. [2021-11-21 00:27:41,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 00:27:41,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6731 states and 9815 transitions. [2021-11-21 00:27:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-21 00:27:41,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:27:41,815 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] [2021-11-21 00:27:41,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:27:41,815 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:27:41,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:27:41,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1573100171, now seen corresponding path program 1 times [2021-11-21 00:27:41,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:27:41,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940534539] [2021-11-21 00:27:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:27:41,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:27:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:27:42,144 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 00:27:42,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:27:42,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940534539] [2021-11-21 00:27:42,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940534539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:27:42,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:27:42,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:27:42,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204418336] [2021-11-21 00:27:42,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:27:42,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:27:42,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:27:42,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:27:42,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:27:42,146 INFO L87 Difference]: Start difference. First operand 6731 states and 9815 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 00:27:44,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:53,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:27:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:27:53,166 INFO L93 Difference]: Finished difference Result 14435 states and 21319 transitions. [2021-11-21 00:27:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:27:53,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2021-11-21 00:27:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:27:53,208 INFO L225 Difference]: With dead ends: 14435 [2021-11-21 00:27:53,208 INFO L226 Difference]: Without dead ends: 7710 [2021-11-21 00:27:53,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:27:53,251 INFO L933 BasicCegarLoop]: 4804 mSDtfsCounter, 379 mSDsluCounter, 15356 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 18745 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:27:53,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 18745 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2144 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2021-11-21 00:27:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7710 states. [2021-11-21 00:27:53,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7710 to 6735. [2021-11-21 00:27:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6735 states, 3940 states have (on average 1.283502538071066) internal successors, (5057), 4046 states have internal predecessors, (5057), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 516 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-21 00:27:53,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6735 states to 6735 states and 9836 transitions. [2021-11-21 00:27:53,773 INFO L78 Accepts]: Start accepts. Automaton has 6735 states and 9836 transitions. Word has length 67 [2021-11-21 00:27:53,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:27:53,773 INFO L470 AbstractCegarLoop]: Abstraction has 6735 states and 9836 transitions. [2021-11-21 00:27:53,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-21 00:27:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 6735 states and 9836 transitions. [2021-11-21 00:27:53,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-21 00:27:53,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:27:53,776 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:27:53,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:27:53,777 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:27:53,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:27:53,777 INFO L85 PathProgramCache]: Analyzing trace with hash 17810353, now seen corresponding path program 1 times [2021-11-21 00:27:53,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:27:53,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325320016] [2021-11-21 00:27:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:27:53,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:27:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:27:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:27:53,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:27:53,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325320016] [2021-11-21 00:27:53,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325320016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:27:53,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:27:53,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:27:53,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882238003] [2021-11-21 00:27:53,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:27:53,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:27:53,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:27:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:27:53,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:27:53,953 INFO L87 Difference]: Start difference. First operand 6735 states and 9836 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, (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 00:27:56,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:00,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:02,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:02,840 INFO L93 Difference]: Finished difference Result 6735 states and 9836 transitions. [2021-11-21 00:28:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:28:02,841 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, (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 74 [2021-11-21 00:28:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:02,868 INFO L225 Difference]: With dead ends: 6735 [2021-11-21 00:28:02,868 INFO L226 Difference]: Without dead ends: 6733 [2021-11-21 00:28:02,871 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 00:28:02,872 INFO L933 BasicCegarLoop]: 4566 mSDtfsCounter, 5018 mSDsluCounter, 5041 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5022 SdHoareTripleChecker+Valid, 9132 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:02,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5022 Valid, 9132 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2021-11-21 00:28:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6733 states. [2021-11-21 00:28:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 6733. [2021-11-21 00:28:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6733 states, 3939 states have (on average 1.2833206397562833) internal successors, (5055), 4044 states have internal predecessors, (5055), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 516 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-21 00:28:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6733 states to 6733 states and 9834 transitions. [2021-11-21 00:28:03,381 INFO L78 Accepts]: Start accepts. Automaton has 6733 states and 9834 transitions. Word has length 74 [2021-11-21 00:28:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:03,381 INFO L470 AbstractCegarLoop]: Abstraction has 6733 states and 9834 transitions. [2021-11-21 00:28:03,382 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, (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 00:28:03,382 INFO L276 IsEmpty]: Start isEmpty. Operand 6733 states and 9834 transitions. [2021-11-21 00:28:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-21 00:28:03,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:03,384 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:28:03,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:28:03,384 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:28:03,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:03,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1230532541, now seen corresponding path program 1 times [2021-11-21 00:28:03,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:03,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288050287] [2021-11-21 00:28:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:03,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:28:03,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:03,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288050287] [2021-11-21 00:28:03,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288050287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:03,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:03,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:28:03,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138362112] [2021-11-21 00:28:03,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:03,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:28:03,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:03,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:28:03,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:28:03,543 INFO L87 Difference]: Start difference. First operand 6733 states and 9834 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, (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 00:28:10,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:10,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:10,764 INFO L93 Difference]: Finished difference Result 6733 states and 9834 transitions. [2021-11-21 00:28:10,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:28:10,764 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, (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 79 [2021-11-21 00:28:10,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:10,797 INFO L225 Difference]: With dead ends: 6733 [2021-11-21 00:28:10,797 INFO L226 Difference]: Without dead ends: 6731 [2021-11-21 00:28:10,803 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 00:28:10,803 INFO L933 BasicCegarLoop]: 4564 mSDtfsCounter, 5018 mSDsluCounter, 5040 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5020 SdHoareTripleChecker+Valid, 9128 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:10,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5020 Valid, 9128 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-21 00:28:10,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6731 states. [2021-11-21 00:28:11,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6731 to 6731. [2021-11-21 00:28:11,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6731 states, 3938 states have (on average 1.2831386490604368) internal successors, (5053), 4042 states have internal predecessors, (5053), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 516 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-21 00:28:11,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6731 states to 6731 states and 9832 transitions. [2021-11-21 00:28:11,446 INFO L78 Accepts]: Start accepts. Automaton has 6731 states and 9832 transitions. Word has length 79 [2021-11-21 00:28:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:11,447 INFO L470 AbstractCegarLoop]: Abstraction has 6731 states and 9832 transitions. [2021-11-21 00:28:11,447 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, (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 00:28:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 6731 states and 9832 transitions. [2021-11-21 00:28:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-21 00:28:11,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:11,451 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-11-21 00:28:11,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 00:28:11,451 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:28:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:11,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2099526562, now seen corresponding path program 1 times [2021-11-21 00:28:11,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:11,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061169033] [2021-11-21 00:28:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:11,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-21 00:28:11,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:11,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061169033] [2021-11-21 00:28:11,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061169033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:11,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:11,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:28:11,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450882023] [2021-11-21 00:28:11,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:11,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:28:11,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:11,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:28:11,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:28:11,752 INFO L87 Difference]: Start difference. First operand 6731 states and 9832 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-21 00:28:24,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:26,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:27,168 INFO L93 Difference]: Finished difference Result 6731 states and 9832 transitions. [2021-11-21 00:28:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:28:27,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 80 [2021-11-21 00:28:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:27,196 INFO L225 Difference]: With dead ends: 6731 [2021-11-21 00:28:27,197 INFO L226 Difference]: Without dead ends: 6729 [2021-11-21 00:28:27,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:28:27,201 INFO L933 BasicCegarLoop]: 4563 mSDtfsCounter, 5015 mSDsluCounter, 12629 mSDsCounter, 0 mSdLazyCounter, 4375 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5022 SdHoareTripleChecker+Valid, 15773 SdHoareTripleChecker+Invalid, 4378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4375 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:27,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5022 Valid, 15773 Invalid, 4378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4375 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2021-11-21 00:28:27,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6729 states. [2021-11-21 00:28:27,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6729 to 6729. [2021-11-21 00:28:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6729 states, 3937 states have (on average 1.2824485648971298) internal successors, (5049), 4040 states have internal predecessors, (5049), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 516 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-21 00:28:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6729 states to 6729 states and 9828 transitions. [2021-11-21 00:28:27,733 INFO L78 Accepts]: Start accepts. Automaton has 6729 states and 9828 transitions. Word has length 80 [2021-11-21 00:28:27,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:27,734 INFO L470 AbstractCegarLoop]: Abstraction has 6729 states and 9828 transitions. [2021-11-21 00:28:27,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-21 00:28:27,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6729 states and 9828 transitions. [2021-11-21 00:28:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-21 00:28:27,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:27,737 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:28:27,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 00:28:27,737 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:28:27,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:27,738 INFO L85 PathProgramCache]: Analyzing trace with hash -257344587, now seen corresponding path program 1 times [2021-11-21 00:28:27,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:27,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671875161] [2021-11-21 00:28:27,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:27,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:28:27,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:27,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671875161] [2021-11-21 00:28:27,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671875161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:27,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:27,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:28:27,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197562920] [2021-11-21 00:28:27,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:27,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:28:27,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:27,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:28:27,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:28:27,915 INFO L87 Difference]: Start difference. First operand 6729 states and 9828 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 00:28:30,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:34,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:36,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:37,146 INFO L93 Difference]: Finished difference Result 6729 states and 9828 transitions. [2021-11-21 00:28:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:28:37,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 84 [2021-11-21 00:28:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:37,170 INFO L225 Difference]: With dead ends: 6729 [2021-11-21 00:28:37,170 INFO L226 Difference]: Without dead ends: 6727 [2021-11-21 00:28:37,173 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 00:28:37,174 INFO L933 BasicCegarLoop]: 4560 mSDtfsCounter, 5017 mSDsluCounter, 5032 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5019 SdHoareTripleChecker+Valid, 9116 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:37,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5019 Valid, 9116 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2021-11-21 00:28:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6727 states. [2021-11-21 00:28:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6727 to 6727. [2021-11-21 00:28:37,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6727 states, 3936 states have (on average 1.2822662601626016) internal successors, (5047), 4038 states have internal predecessors, (5047), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 516 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-21 00:28:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6727 states to 6727 states and 9826 transitions. [2021-11-21 00:28:37,716 INFO L78 Accepts]: Start accepts. Automaton has 6727 states and 9826 transitions. Word has length 84 [2021-11-21 00:28:37,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:37,717 INFO L470 AbstractCegarLoop]: Abstraction has 6727 states and 9826 transitions. [2021-11-21 00:28:37,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 00:28:37,717 INFO L276 IsEmpty]: Start isEmpty. Operand 6727 states and 9826 transitions. [2021-11-21 00:28:37,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-21 00:28:37,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:37,719 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-11-21 00:28:37,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 00:28:37,720 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:28:37,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:37,720 INFO L85 PathProgramCache]: Analyzing trace with hash -422295527, now seen corresponding path program 1 times [2021-11-21 00:28:37,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:37,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13811160] [2021-11-21 00:28:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:37,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-21 00:28:37,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:37,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13811160] [2021-11-21 00:28:37,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13811160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:37,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:37,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:28:37,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052127896] [2021-11-21 00:28:37,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:37,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:28:37,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:37,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:28:37,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:28:37,902 INFO L87 Difference]: Start difference. First operand 6727 states and 9826 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 00:28:42,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:43,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:43,924 INFO L93 Difference]: Finished difference Result 13433 states and 20100 transitions. [2021-11-21 00:28:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:28:43,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 83 [2021-11-21 00:28:43,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:43,965 INFO L225 Difference]: With dead ends: 13433 [2021-11-21 00:28:43,965 INFO L226 Difference]: Without dead ends: 6725 [2021-11-21 00:28:44,008 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 00:28:44,009 INFO L933 BasicCegarLoop]: 4558 mSDtfsCounter, 5001 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5003 SdHoareTripleChecker+Valid, 4581 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:44,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5003 Valid, 4581 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 483 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-21 00:28:44,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6725 states. [2021-11-21 00:28:44,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6725 to 6719. [2021-11-21 00:28:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6719 states, 3929 states have (on average 1.2812420463222194) internal successors, (5034), 4030 states have internal predecessors, (5034), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 516 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-21 00:28:44,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6719 states to 6719 states and 9813 transitions. [2021-11-21 00:28:44,491 INFO L78 Accepts]: Start accepts. Automaton has 6719 states and 9813 transitions. Word has length 83 [2021-11-21 00:28:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:44,491 INFO L470 AbstractCegarLoop]: Abstraction has 6719 states and 9813 transitions. [2021-11-21 00:28:44,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 00:28:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 6719 states and 9813 transitions. [2021-11-21 00:28:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-21 00:28:44,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:44,493 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:28:44,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 00:28:44,494 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:28:44,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:44,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1800244312, now seen corresponding path program 1 times [2021-11-21 00:28:44,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:44,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912295990] [2021-11-21 00:28:44,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:44,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:28:44,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:44,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912295990] [2021-11-21 00:28:44,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912295990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:44,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:44,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:28:44,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733603857] [2021-11-21 00:28:44,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:44,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:28:44,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:44,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:28:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:28:44,677 INFO L87 Difference]: Start difference. First operand 6719 states and 9813 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, (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 00:28:51,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:51,584 INFO L93 Difference]: Finished difference Result 6719 states and 9813 transitions. [2021-11-21 00:28:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:28:51,585 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, (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 86 [2021-11-21 00:28:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:51,602 INFO L225 Difference]: With dead ends: 6719 [2021-11-21 00:28:51,603 INFO L226 Difference]: Without dead ends: 6717 [2021-11-21 00:28:51,604 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 00:28:51,605 INFO L933 BasicCegarLoop]: 4553 mSDtfsCounter, 5004 mSDsluCounter, 5029 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5006 SdHoareTripleChecker+Valid, 9106 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:51,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5006 Valid, 9106 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-21 00:28:51,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2021-11-21 00:28:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 6717. [2021-11-21 00:28:51,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6717 states, 3928 states have (on average 1.2810590631364562) internal successors, (5032), 4028 states have internal predecessors, (5032), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 516 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-21 00:28:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6717 states to 6717 states and 9811 transitions. [2021-11-21 00:28:52,022 INFO L78 Accepts]: Start accepts. Automaton has 6717 states and 9811 transitions. Word has length 86 [2021-11-21 00:28:52,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:52,023 INFO L470 AbstractCegarLoop]: Abstraction has 6717 states and 9811 transitions. [2021-11-21 00:28:52,023 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, (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 00:28:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6717 states and 9811 transitions. [2021-11-21 00:28:52,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-21 00:28:52,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:52,025 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:28:52,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 00:28:52,025 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_linux_kernel_module_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:28:52,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:52,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1773400109, now seen corresponding path program 1 times [2021-11-21 00:28:52,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:52,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167346687] [2021-11-21 00:28:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:52,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:28:52,193 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:52,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167346687] [2021-11-21 00:28:52,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167346687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:52,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:52,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:28:52,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818571139] [2021-11-21 00:28:52,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:52,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:28:52,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:52,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:28:52,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:28:52,196 INFO L87 Difference]: Start difference. First operand 6717 states and 9811 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, (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 00:28:54,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:00,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:00,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:00,478 INFO L93 Difference]: Finished difference Result 6717 states and 9811 transitions. [2021-11-21 00:29:00,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:29:00,478 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, (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 91 [2021-11-21 00:29:00,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:00,496 INFO L225 Difference]: With dead ends: 6717 [2021-11-21 00:29:00,496 INFO L226 Difference]: Without dead ends: 6715 [2021-11-21 00:29:00,498 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 00:29:00,499 INFO L933 BasicCegarLoop]: 4551 mSDtfsCounter, 5003 mSDsluCounter, 5027 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5005 SdHoareTripleChecker+Valid, 9102 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:00,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5005 Valid, 9102 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2021-11-21 00:29:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6715 states. [2021-11-21 00:29:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6715 to 6715. [2021-11-21 00:29:01,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6715 states, 3927 states have (on average 1.2808759867583397) internal successors, (5030), 4026 states have internal predecessors, (5030), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 516 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-21 00:29:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6715 states to 6715 states and 9809 transitions. [2021-11-21 00:29:01,040 INFO L78 Accepts]: Start accepts. Automaton has 6715 states and 9809 transitions. Word has length 91 [2021-11-21 00:29:01,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:01,041 INFO L470 AbstractCegarLoop]: Abstraction has 6715 states and 9809 transitions. [2021-11-21 00:29:01,041 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, (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 00:29:01,041 INFO L276 IsEmpty]: Start isEmpty. Operand 6715 states and 9809 transitions. [2021-11-21 00:29:01,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-21 00:29:01,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:01,044 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:29:01,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 00:29:01,044 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_linux_kernel_rcu_update_lock_bh_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:29:01,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:01,045 INFO L85 PathProgramCache]: Analyzing trace with hash -139423166, now seen corresponding path program 1 times [2021-11-21 00:29:01,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:01,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686514539] [2021-11-21 00:29:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:01,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:29:01,222 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:01,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686514539] [2021-11-21 00:29:01,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686514539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:01,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:01,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:29:01,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049807148] [2021-11-21 00:29:01,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:01,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:29:01,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:01,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:29:01,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:29:01,224 INFO L87 Difference]: Start difference. First operand 6715 states and 9809 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, (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 00:29:03,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:10,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:10,761 INFO L93 Difference]: Finished difference Result 6715 states and 9809 transitions. [2021-11-21 00:29:10,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:29:10,761 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, (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 96 [2021-11-21 00:29:10,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:10,788 INFO L225 Difference]: With dead ends: 6715 [2021-11-21 00:29:10,788 INFO L226 Difference]: Without dead ends: 6713 [2021-11-21 00:29:10,791 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 00:29:10,792 INFO L933 BasicCegarLoop]: 4548 mSDtfsCounter, 4997 mSDsluCounter, 5023 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5001 SdHoareTripleChecker+Valid, 9096 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:10,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5001 Valid, 9096 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2021-11-21 00:29:10,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6713 states. [2021-11-21 00:29:11,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6713 to 6713. [2021-11-21 00:29:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6713 states, 3926 states have (on average 1.2806928171166583) internal successors, (5028), 4024 states have internal predecessors, (5028), 2254 states have call successors, (2254), 520 states have call predecessors, (2254), 516 states have return successors, (2525), 2225 states have call predecessors, (2525), 2252 states have call successors, (2525) [2021-11-21 00:29:11,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6713 states to 6713 states and 9807 transitions. [2021-11-21 00:29:11,307 INFO L78 Accepts]: Start accepts. Automaton has 6713 states and 9807 transitions. Word has length 96 [2021-11-21 00:29:11,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:11,307 INFO L470 AbstractCegarLoop]: Abstraction has 6713 states and 9807 transitions. [2021-11-21 00:29:11,308 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, (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 00:29:11,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6713 states and 9807 transitions. [2021-11-21 00:29:11,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-21 00:29:11,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:11,311 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-11-21 00:29:11,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 00:29:11,311 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:29:11,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:11,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1572937484, now seen corresponding path program 1 times [2021-11-21 00:29:11,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:11,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401564818] [2021-11-21 00:29:11,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:11,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-21 00:29:11,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:11,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401564818] [2021-11-21 00:29:11,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401564818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:11,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:11,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:29:11,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615142284] [2021-11-21 00:29:11,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:11,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:29:11,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:11,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:29:11,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:29:11,670 INFO L87 Difference]: Start difference. First operand 6713 states and 9807 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 00:29:14,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:16,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:18,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:27,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:29,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:31,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:33,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:35,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:37,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:37,628 INFO L93 Difference]: Finished difference Result 6885 states and 9988 transitions. [2021-11-21 00:29:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:29:37,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 102 [2021-11-21 00:29:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:37,646 INFO L225 Difference]: With dead ends: 6885 [2021-11-21 00:29:37,646 INFO L226 Difference]: Without dead ends: 6883 [2021-11-21 00:29:37,649 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 00:29:37,649 INFO L933 BasicCegarLoop]: 7576 mSDtfsCounter, 5131 mSDsluCounter, 20718 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5132 SdHoareTripleChecker+Valid, 26279 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:37,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5132 Valid, 26279 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2834 Invalid, 8 Unknown, 0 Unchecked, 25.4s Time] [2021-11-21 00:29:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6883 states. [2021-11-21 00:29:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6883 to 6721. [2021-11-21 00:29:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6721 states, 3933 states have (on average 1.2801932367149758) internal successors, (5035), 4029 states have internal predecessors, (5035), 2254 states have call successors, (2254), 522 states have call predecessors, (2254), 517 states have return successors, (2521), 2226 states have call predecessors, (2521), 2252 states have call successors, (2521) [2021-11-21 00:29:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6721 states to 6721 states and 9810 transitions. [2021-11-21 00:29:38,071 INFO L78 Accepts]: Start accepts. Automaton has 6721 states and 9810 transitions. Word has length 102 [2021-11-21 00:29:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:38,072 INFO L470 AbstractCegarLoop]: Abstraction has 6721 states and 9810 transitions. [2021-11-21 00:29:38,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 00:29:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6721 states and 9810 transitions. [2021-11-21 00:29:38,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-21 00:29:38,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:38,075 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-11-21 00:29:38,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-21 00:29:38,075 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:29:38,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:38,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1818547849, now seen corresponding path program 1 times [2021-11-21 00:29:38,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:38,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757110793] [2021-11-21 00:29:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:38,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-21 00:29:38,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:38,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757110793] [2021-11-21 00:29:38,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757110793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:38,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:38,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:29:38,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977506812] [2021-11-21 00:29:38,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:38,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:29:38,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:38,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:29:38,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:29:38,297 INFO L87 Difference]: Start difference. First operand 6721 states and 9810 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 00:29:42,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:47,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:49,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:51,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:51,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:51,794 INFO L93 Difference]: Finished difference Result 6743 states and 9826 transitions. [2021-11-21 00:29:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:29:51,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 104 [2021-11-21 00:29:51,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:51,812 INFO L225 Difference]: With dead ends: 6743 [2021-11-21 00:29:51,813 INFO L226 Difference]: Without dead ends: 6741 [2021-11-21 00:29:51,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 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 00:29:51,818 INFO L933 BasicCegarLoop]: 4553 mSDtfsCounter, 4947 mSDsluCounter, 10115 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 13708 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:51,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 13708 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1444 Invalid, 3 Unknown, 0 Unchecked, 13.0s Time] [2021-11-21 00:29:51,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2021-11-21 00:29:52,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 6739. [2021-11-21 00:29:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6739 states, 3945 states have (on average 1.279340937896071) internal successors, (5047), 4041 states have internal predecessors, (5047), 2254 states have call successors, (2254), 528 states have call predecessors, (2254), 523 states have return successors, (2521), 2226 states have call predecessors, (2521), 2252 states have call successors, (2521) [2021-11-21 00:29:52,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6739 states to 6739 states and 9822 transitions. [2021-11-21 00:29:52,238 INFO L78 Accepts]: Start accepts. Automaton has 6739 states and 9822 transitions. Word has length 104 [2021-11-21 00:29:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:52,238 INFO L470 AbstractCegarLoop]: Abstraction has 6739 states and 9822 transitions. [2021-11-21 00:29:52,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 00:29:52,238 INFO L276 IsEmpty]: Start isEmpty. Operand 6739 states and 9822 transitions. [2021-11-21 00:29:52,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-21 00:29:52,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:52,241 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:29:52,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-21 00:29:52,241 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_linux_kernel_rcu_update_lock_sched_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:29:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:52,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1964348479, now seen corresponding path program 1 times [2021-11-21 00:29:52,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:52,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406485145] [2021-11-21 00:29:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:52,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:29:52,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:52,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406485145] [2021-11-21 00:29:52,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406485145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:52,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:52,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:29:52,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498391108] [2021-11-21 00:29:52,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:52,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:29:52,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:52,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:29:52,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:29:52,420 INFO L87 Difference]: Start difference. First operand 6739 states and 9822 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, (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 00:29:58,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:59,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:59,099 INFO L93 Difference]: Finished difference Result 6743 states and 9828 transitions. [2021-11-21 00:29:59,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:29:59,099 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, (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 101 [2021-11-21 00:29:59,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:59,117 INFO L225 Difference]: With dead ends: 6743 [2021-11-21 00:29:59,118 INFO L226 Difference]: Without dead ends: 6741 [2021-11-21 00:29:59,121 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 00:29:59,121 INFO L933 BasicCegarLoop]: 4547 mSDtfsCounter, 4996 mSDsluCounter, 5022 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5000 SdHoareTripleChecker+Valid, 9095 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:59,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5000 Valid, 9095 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-21 00:29:59,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2021-11-21 00:29:59,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 6737. [2021-11-21 00:29:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6737 states, 3944 states have (on average 1.279158215010142) internal successors, (5045), 4039 states have internal predecessors, (5045), 2254 states have call successors, (2254), 528 states have call predecessors, (2254), 523 states have return successors, (2521), 2226 states have call predecessors, (2521), 2252 states have call successors, (2521) [2021-11-21 00:29:59,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6737 states to 6737 states and 9820 transitions. [2021-11-21 00:29:59,543 INFO L78 Accepts]: Start accepts. Automaton has 6737 states and 9820 transitions. Word has length 101 [2021-11-21 00:29:59,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:59,544 INFO L470 AbstractCegarLoop]: Abstraction has 6737 states and 9820 transitions. [2021-11-21 00:29:59,544 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, (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 00:29:59,544 INFO L276 IsEmpty]: Start isEmpty. Operand 6737 states and 9820 transitions. [2021-11-21 00:29:59,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-21 00:29:59,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:59,546 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-11-21 00:29:59,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-21 00:29:59,547 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:29:59,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:59,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1116780513, now seen corresponding path program 1 times [2021-11-21 00:29:59,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:59,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303901619] [2021-11-21 00:29:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:59,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:59,821 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-21 00:29:59,822 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:59,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303901619] [2021-11-21 00:29:59,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303901619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:59,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:59,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:29:59,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533632256] [2021-11-21 00:29:59,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:59,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:29:59,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:59,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:29:59,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:29:59,824 INFO L87 Difference]: Start difference. First operand 6737 states and 9820 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, (23), 3 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 00:30:10,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:12,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:14,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:14,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:14,333 INFO L93 Difference]: Finished difference Result 6749 states and 9828 transitions. [2021-11-21 00:30:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:30:14,334 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, (23), 3 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 106 [2021-11-21 00:30:14,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:14,353 INFO L225 Difference]: With dead ends: 6749 [2021-11-21 00:30:14,353 INFO L226 Difference]: Without dead ends: 6747 [2021-11-21 00:30:14,357 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 00:30:14,357 INFO L933 BasicCegarLoop]: 5110 mSDtfsCounter, 792 mSDsluCounter, 16251 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 19781 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:14,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 19781 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2153 Invalid, 2 Unknown, 0 Unchecked, 14.0s Time] [2021-11-21 00:30:14,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6747 states. [2021-11-21 00:30:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6747 to 6741. [2021-11-21 00:30:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6741 states, 3947 states have (on average 1.2786926779832783) internal successors, (5047), 4042 states have internal predecessors, (5047), 2254 states have call successors, (2254), 529 states have call predecessors, (2254), 524 states have return successors, (2521), 2226 states have call predecessors, (2521), 2252 states have call successors, (2521) [2021-11-21 00:30:14,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6741 states to 6741 states and 9822 transitions. [2021-11-21 00:30:14,843 INFO L78 Accepts]: Start accepts. Automaton has 6741 states and 9822 transitions. Word has length 106 [2021-11-21 00:30:14,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:14,844 INFO L470 AbstractCegarLoop]: Abstraction has 6741 states and 9822 transitions. [2021-11-21 00:30:14,844 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, (23), 3 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 00:30:14,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6741 states and 9822 transitions. [2021-11-21 00:30:14,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-21 00:30:14,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:14,846 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:30:14,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-21 00:30:14,846 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:30:14,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:14,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1544486368, now seen corresponding path program 1 times [2021-11-21 00:30:14,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:14,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651391938] [2021-11-21 00:30:14,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:14,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:30:14,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:14,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651391938] [2021-11-21 00:30:14,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651391938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:14,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:14,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:30:14,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475944775] [2021-11-21 00:30:14,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:14,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:30:14,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:14,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:30:14,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:30:14,997 INFO L87 Difference]: Start difference. First operand 6741 states and 9822 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, (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 00:30:20,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:21,459 INFO L93 Difference]: Finished difference Result 6741 states and 9822 transitions. [2021-11-21 00:30:21,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:30:21,460 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, (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 106 [2021-11-21 00:30:21,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:21,479 INFO L225 Difference]: With dead ends: 6741 [2021-11-21 00:30:21,479 INFO L226 Difference]: Without dead ends: 6739 [2021-11-21 00:30:21,483 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 00:30:21,484 INFO L933 BasicCegarLoop]: 4545 mSDtfsCounter, 4994 mSDsluCounter, 5020 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 9090 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:21,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4996 Valid, 9090 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-21 00:30:21,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6739 states. [2021-11-21 00:30:21,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6739 to 6739. [2021-11-21 00:30:21,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6739 states, 3946 states have (on average 1.2785098834262545) internal successors, (5045), 4040 states have internal predecessors, (5045), 2254 states have call successors, (2254), 529 states have call predecessors, (2254), 524 states have return successors, (2521), 2226 states have call predecessors, (2521), 2252 states have call successors, (2521) [2021-11-21 00:30:21,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6739 states to 6739 states and 9820 transitions. [2021-11-21 00:30:21,963 INFO L78 Accepts]: Start accepts. Automaton has 6739 states and 9820 transitions. Word has length 106 [2021-11-21 00:30:21,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:21,964 INFO L470 AbstractCegarLoop]: Abstraction has 6739 states and 9820 transitions. [2021-11-21 00:30:21,964 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, (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 00:30:21,964 INFO L276 IsEmpty]: Start isEmpty. Operand 6739 states and 9820 transitions. [2021-11-21 00:30:21,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-21 00:30:21,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:21,967 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-11-21 00:30:21,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-21 00:30:21,968 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_net_sock__double_releaseErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:30:21,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash -876281961, now seen corresponding path program 1 times [2021-11-21 00:30:21,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:21,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795797878] [2021-11-21 00:30:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:21,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-21 00:30:22,241 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:22,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795797878] [2021-11-21 00:30:22,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795797878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:22,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:22,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 00:30:22,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429115826] [2021-11-21 00:30:22,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:22,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:30:22,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:22,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:30:22,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:30:22,243 INFO L87 Difference]: Start difference. First operand 6739 states and 9820 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 00:30:27,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:04,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:06,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:08,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:10,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:15,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:17,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:19,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:21,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:22,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:22,164 INFO L93 Difference]: Finished difference Result 13355 states and 19486 transitions. [2021-11-21 00:31:22,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:31:22,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 111 [2021-11-21 00:31:22,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:22,212 INFO L225 Difference]: With dead ends: 13355 [2021-11-21 00:31:22,212 INFO L226 Difference]: Without dead ends: 13353 [2021-11-21 00:31:22,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:31:22,218 INFO L933 BasicCegarLoop]: 4793 mSDtfsCounter, 7044 mSDsluCounter, 14685 mSDsCounter, 0 mSdLazyCounter, 19107 mSolverCounterSat, 1254 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8006 SdHoareTripleChecker+Valid, 17772 SdHoareTripleChecker+Invalid, 20370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1254 IncrementalHoareTripleChecker+Valid, 19107 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:22,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8006 Valid, 17772 Invalid, 20370 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1254 Valid, 19107 Invalid, 9 Unknown, 0 Unchecked, 58.4s Time] [2021-11-21 00:31:22,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13353 states. [2021-11-21 00:31:23,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13353 to 13197. [2021-11-21 00:31:23,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13197 states, 7745 states have (on average 1.2817301484828922) internal successors, (9927), 7920 states have internal predecessors, (9927), 4427 states have call successors, (4427), 1026 states have call predecessors, (4427), 1010 states have return successors, (4945), 4363 states have call predecessors, (4945), 4425 states have call successors, (4945) [2021-11-21 00:31:23,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13197 states to 13197 states and 19299 transitions. [2021-11-21 00:31:23,255 INFO L78 Accepts]: Start accepts. Automaton has 13197 states and 19299 transitions. Word has length 111 [2021-11-21 00:31:23,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:23,256 INFO L470 AbstractCegarLoop]: Abstraction has 13197 states and 19299 transitions. [2021-11-21 00:31:23,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 00:31:23,256 INFO L276 IsEmpty]: Start isEmpty. Operand 13197 states and 19299 transitions. [2021-11-21 00:31:23,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-21 00:31:23,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:23,260 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:31:23,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-21 00:31:23,261 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_linux_kernel_rcu_srcu_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:31:23,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:23,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1374885432, now seen corresponding path program 1 times [2021-11-21 00:31:23,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:23,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81997326] [2021-11-21 00:31:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:23,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:31:23,430 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:23,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81997326] [2021-11-21 00:31:23,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81997326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:23,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:23,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:31:23,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336170735] [2021-11-21 00:31:23,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:23,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:31:23,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:31:23,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:31:23,433 INFO L87 Difference]: Start difference. First operand 13197 states and 19299 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, (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 00:31:26,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:32,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:35,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:35,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:35,407 INFO L93 Difference]: Finished difference Result 13209 states and 19315 transitions. [2021-11-21 00:31:35,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:31:35,407 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, (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 111 [2021-11-21 00:31:35,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:35,447 INFO L225 Difference]: With dead ends: 13209 [2021-11-21 00:31:35,447 INFO L226 Difference]: Without dead ends: 13207 [2021-11-21 00:31:35,453 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 00:31:35,454 INFO L933 BasicCegarLoop]: 4546 mSDtfsCounter, 4987 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4993 SdHoareTripleChecker+Valid, 9115 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:35,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4993 Valid, 9115 Invalid, 958 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 955 Invalid, 3 Unknown, 0 Unchecked, 11.1s Time] [2021-11-21 00:31:35,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13207 states. [2021-11-21 00:31:36,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13207 to 13195. [2021-11-21 00:31:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13195 states, 7744 states have (on average 1.281637396694215) internal successors, (9925), 7918 states have internal predecessors, (9925), 4427 states have call successors, (4427), 1026 states have call predecessors, (4427), 1010 states have return successors, (4945), 4363 states have call predecessors, (4945), 4425 states have call successors, (4945) [2021-11-21 00:31:36,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 19297 transitions. [2021-11-21 00:31:36,376 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 19297 transitions. Word has length 111 [2021-11-21 00:31:36,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:36,376 INFO L470 AbstractCegarLoop]: Abstraction has 13195 states and 19297 transitions. [2021-11-21 00:31:36,376 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, (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 00:31:36,376 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 19297 transitions. [2021-11-21 00:31:36,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-21 00:31:36,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:36,380 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:31:36,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-21 00:31:36,381 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_linux_lib_idr_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:31:36,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:36,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1750598309, now seen corresponding path program 1 times [2021-11-21 00:31:36,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:36,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001287445] [2021-11-21 00:31:36,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:36,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:31:36,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:36,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001287445] [2021-11-21 00:31:36,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001287445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:36,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:36,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:31:36,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985352914] [2021-11-21 00:31:36,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:36,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:31:36,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:36,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:31:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:31:36,552 INFO L87 Difference]: Start difference. First operand 13195 states and 19297 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, (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 00:31:39,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:44,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:46,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:46,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:46,736 INFO L93 Difference]: Finished difference Result 13195 states and 19297 transitions. [2021-11-21 00:31:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:31:46,737 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, (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 116 [2021-11-21 00:31:46,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:46,776 INFO L225 Difference]: With dead ends: 13195 [2021-11-21 00:31:46,777 INFO L226 Difference]: Without dead ends: 13193 [2021-11-21 00:31:46,783 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 00:31:46,784 INFO L933 BasicCegarLoop]: 4541 mSDtfsCounter, 4985 mSDsluCounter, 5016 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4989 SdHoareTripleChecker+Valid, 9082 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:46,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4989 Valid, 9082 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2021-11-21 00:31:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13193 states. [2021-11-21 00:31:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13193 to 13193. [2021-11-21 00:31:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13193 states, 7743 states have (on average 1.281544620947953) internal successors, (9923), 7916 states have internal predecessors, (9923), 4427 states have call successors, (4427), 1026 states have call predecessors, (4427), 1010 states have return successors, (4945), 4363 states have call predecessors, (4945), 4425 states have call successors, (4945) [2021-11-21 00:31:47,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13193 states to 13193 states and 19295 transitions. [2021-11-21 00:31:47,886 INFO L78 Accepts]: Start accepts. Automaton has 13193 states and 19295 transitions. Word has length 116 [2021-11-21 00:31:47,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:47,886 INFO L470 AbstractCegarLoop]: Abstraction has 13193 states and 19295 transitions. [2021-11-21 00:31:47,886 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, (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 00:31:47,886 INFO L276 IsEmpty]: Start isEmpty. Operand 13193 states and 19295 transitions. [2021-11-21 00:31:47,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-21 00:31:47,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:47,890 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 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] [2021-11-21 00:31:47,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-21 00:31:47,891 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:31:47,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:47,891 INFO L85 PathProgramCache]: Analyzing trace with hash 620831974, now seen corresponding path program 1 times [2021-11-21 00:31:47,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:47,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188404199] [2021-11-21 00:31:47,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:47,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-21 00:31:48,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:48,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188404199] [2021-11-21 00:31:48,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188404199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:48,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:48,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:31:48,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040284919] [2021-11-21 00:31:48,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:48,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:31:48,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:48,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:31:48,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:31:48,107 INFO L87 Difference]: Start difference. First operand 13193 states and 19295 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 00:31:57,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:59,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:59,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:59,693 INFO L93 Difference]: Finished difference Result 13247 states and 19332 transitions. [2021-11-21 00:31:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:31:59,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 142 [2021-11-21 00:31:59,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:59,731 INFO L225 Difference]: With dead ends: 13247 [2021-11-21 00:31:59,731 INFO L226 Difference]: Without dead ends: 13245 [2021-11-21 00:31:59,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 00:31:59,737 INFO L933 BasicCegarLoop]: 4542 mSDtfsCounter, 4922 mSDsluCounter, 10086 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4924 SdHoareTripleChecker+Valid, 13665 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:59,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4924 Valid, 13665 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1449 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2021-11-21 00:31:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13245 states. [2021-11-21 00:32:00,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13245 to 13243. [2021-11-21 00:32:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13243 states, 7770 states have (on average 1.28005148005148) internal successors, (9946), 7942 states have internal predecessors, (9946), 4431 states have call successors, (4431), 1046 states have call predecessors, (4431), 1030 states have return successors, (4949), 4367 states have call predecessors, (4949), 4429 states have call successors, (4949) [2021-11-21 00:32:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 19326 transitions. [2021-11-21 00:32:00,739 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 19326 transitions. Word has length 142 [2021-11-21 00:32:00,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:00,739 INFO L470 AbstractCegarLoop]: Abstraction has 13243 states and 19326 transitions. [2021-11-21 00:32:00,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 00:32:00,740 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 19326 transitions. [2021-11-21 00:32:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-21 00:32:00,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:00,744 INFO L514 BasicCegarLoop]: trace histogram [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 00:32:00,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-21 00:32:00,744 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:32:00,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:00,745 INFO L85 PathProgramCache]: Analyzing trace with hash -460633987, now seen corresponding path program 1 times [2021-11-21 00:32:00,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:00,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678239432] [2021-11-21 00:32:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:00,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:00,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:32:00,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:00,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678239432] [2021-11-21 00:32:00,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678239432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:00,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:00,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:32:00,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035996466] [2021-11-21 00:32:00,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:00,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:00,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:00,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:00,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:00,893 INFO L87 Difference]: Start difference. First operand 13243 states and 19326 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, (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 00:32:03,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:09,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:09,771 INFO L93 Difference]: Finished difference Result 13251 states and 19338 transitions. [2021-11-21 00:32:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:32:09,772 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, (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 121 [2021-11-21 00:32:09,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:09,813 INFO L225 Difference]: With dead ends: 13251 [2021-11-21 00:32:09,813 INFO L226 Difference]: Without dead ends: 13249 [2021-11-21 00:32:09,819 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 00:32:09,820 INFO L933 BasicCegarLoop]: 4537 mSDtfsCounter, 4982 mSDsluCounter, 5013 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4986 SdHoareTripleChecker+Valid, 9075 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:09,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4986 Valid, 9075 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2021-11-21 00:32:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13249 states. [2021-11-21 00:32:10,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13249 to 13241. [2021-11-21 00:32:10,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13241 states, 7769 states have (on average 1.2799588106577424) internal successors, (9944), 7940 states have internal predecessors, (9944), 4431 states have call successors, (4431), 1046 states have call predecessors, (4431), 1030 states have return successors, (4949), 4367 states have call predecessors, (4949), 4429 states have call successors, (4949) [2021-11-21 00:32:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13241 states to 13241 states and 19324 transitions. [2021-11-21 00:32:10,960 INFO L78 Accepts]: Start accepts. Automaton has 13241 states and 19324 transitions. Word has length 121 [2021-11-21 00:32:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:10,961 INFO L470 AbstractCegarLoop]: Abstraction has 13241 states and 19324 transitions. [2021-11-21 00:32:10,961 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, (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 00:32:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 13241 states and 19324 transitions. [2021-11-21 00:32:10,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-21 00:32:10,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:10,965 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2021-11-21 00:32:10,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-21 00:32:10,966 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:32:10,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:10,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1963082776, now seen corresponding path program 1 times [2021-11-21 00:32:10,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:10,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042472010] [2021-11-21 00:32:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:10,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:32:11,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:11,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042472010] [2021-11-21 00:32:11,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042472010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:11,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:11,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:32:11,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655248681] [2021-11-21 00:32:11,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:11,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:11,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:11,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:11,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:11,112 INFO L87 Difference]: Start difference. First operand 13241 states and 19324 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, (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 00:32:14,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:20,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:22,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:23,108 INFO L93 Difference]: Finished difference Result 13261 states and 19352 transitions. [2021-11-21 00:32:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:32:23,108 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, (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 126 [2021-11-21 00:32:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:23,145 INFO L225 Difference]: With dead ends: 13261 [2021-11-21 00:32:23,146 INFO L226 Difference]: Without dead ends: 13259 [2021-11-21 00:32:23,152 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 00:32:23,152 INFO L933 BasicCegarLoop]: 4538 mSDtfsCounter, 4975 mSDsluCounter, 5040 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4983 SdHoareTripleChecker+Valid, 9100 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:23,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4983 Valid, 9100 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2021-11-21 00:32:23,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13259 states. [2021-11-21 00:32:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13259 to 13239. [2021-11-21 00:32:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13239 states, 7768 states have (on average 1.2798661174047374) internal successors, (9942), 7938 states have internal predecessors, (9942), 4431 states have call successors, (4431), 1046 states have call predecessors, (4431), 1030 states have return successors, (4949), 4367 states have call predecessors, (4949), 4429 states have call successors, (4949) [2021-11-21 00:32:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13239 states to 13239 states and 19322 transitions. [2021-11-21 00:32:24,200 INFO L78 Accepts]: Start accepts. Automaton has 13239 states and 19322 transitions. Word has length 126 [2021-11-21 00:32:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:24,200 INFO L470 AbstractCegarLoop]: Abstraction has 13239 states and 19322 transitions. [2021-11-21 00:32:24,200 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, (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 00:32:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 13239 states and 19322 transitions. [2021-11-21 00:32:24,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-21 00:32:24,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:24,204 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:24,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-21 00:32:24,205 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_linux_net_sock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:32:24,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1760131816, now seen corresponding path program 1 times [2021-11-21 00:32:24,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:24,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452220231] [2021-11-21 00:32:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:24,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:32:24,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:24,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452220231] [2021-11-21 00:32:24,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452220231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:24,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:24,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:32:24,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306369521] [2021-11-21 00:32:24,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:24,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:24,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:24,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:24,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:24,354 INFO L87 Difference]: Start difference. First operand 13239 states and 19322 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, (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 00:32:27,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:30,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:37,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:39,422 WARN L515 Checker$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 00:32:41,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:41,581 INFO L93 Difference]: Finished difference Result 13383 states and 19479 transitions. [2021-11-21 00:32:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:32:41,582 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, (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 131 [2021-11-21 00:32:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:41,616 INFO L225 Difference]: With dead ends: 13383 [2021-11-21 00:32:41,616 INFO L226 Difference]: Without dead ends: 13381 [2021-11-21 00:32:41,620 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 00:32:41,621 INFO L933 BasicCegarLoop]: 5744 mSDtfsCounter, 4898 mSDsluCounter, 11206 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4902 SdHoareTripleChecker+Valid, 16003 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:41,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4902 Valid, 16003 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1430 Invalid, 4 Unknown, 0 Unchecked, 16.2s Time] [2021-11-21 00:32:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13381 states. [2021-11-21 00:32:42,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13381 to 13345. [2021-11-21 00:32:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13345 states, 7823 states have (on average 1.2778985044100728) internal successors, (9997), 7993 states have internal predecessors, (9997), 4465 states have call successors, (4465), 1063 states have call predecessors, (4465), 1047 states have return successors, (4983), 4401 states have call predecessors, (4983), 4463 states have call successors, (4983) [2021-11-21 00:32:42,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13345 states to 13345 states and 19445 transitions. [2021-11-21 00:32:42,850 INFO L78 Accepts]: Start accepts. Automaton has 13345 states and 19445 transitions. Word has length 131 [2021-11-21 00:32:42,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:42,851 INFO L470 AbstractCegarLoop]: Abstraction has 13345 states and 19445 transitions. [2021-11-21 00:32:42,851 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, (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 00:32:42,851 INFO L276 IsEmpty]: Start isEmpty. Operand 13345 states and 19445 transitions. [2021-11-21 00:32:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-21 00:32:42,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:42,854 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 5, 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] [2021-11-21 00:32:42,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-21 00:32:42,854 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:32:42,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:42,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1369026716, now seen corresponding path program 1 times [2021-11-21 00:32:42,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:42,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871192933] [2021-11-21 00:32:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:42,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-21 00:32:43,017 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:43,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871192933] [2021-11-21 00:32:43,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871192933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:43,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:43,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:32:43,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441750626] [2021-11-21 00:32:43,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:43,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:32:43,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:43,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:32:43,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:32:43,019 INFO L87 Difference]: Start difference. First operand 13345 states and 19445 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-21 00:32:54,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:56,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:58,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:59,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:59,868 INFO L93 Difference]: Finished difference Result 13347 states and 19446 transitions. [2021-11-21 00:32:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:32:59,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 156 [2021-11-21 00:32:59,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:59,925 INFO L225 Difference]: With dead ends: 13347 [2021-11-21 00:32:59,925 INFO L226 Difference]: Without dead ends: 13345 [2021-11-21 00:32:59,933 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 00:32:59,934 INFO L933 BasicCegarLoop]: 4541 mSDtfsCounter, 51 mSDsluCounter, 15006 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 18113 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:59,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 18113 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1924 Invalid, 2 Unknown, 0 Unchecked, 15.8s Time] [2021-11-21 00:32:59,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13345 states. [2021-11-21 00:33:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13345 to 13345. [2021-11-21 00:33:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13345 states, 7823 states have (on average 1.2773871916144701) internal successors, (9993), 7993 states have internal predecessors, (9993), 4465 states have call successors, (4465), 1063 states have call predecessors, (4465), 1047 states have return successors, (4983), 4401 states have call predecessors, (4983), 4463 states have call successors, (4983) [2021-11-21 00:33:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13345 states to 13345 states and 19441 transitions. [2021-11-21 00:33:01,110 INFO L78 Accepts]: Start accepts. Automaton has 13345 states and 19441 transitions. Word has length 156 [2021-11-21 00:33:01,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:01,110 INFO L470 AbstractCegarLoop]: Abstraction has 13345 states and 19441 transitions. [2021-11-21 00:33:01,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-21 00:33:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand 13345 states and 19441 transitions. [2021-11-21 00:33:01,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-21 00:33:01,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:01,116 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:01,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-21 00:33:01,116 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:33:01,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:01,117 INFO L85 PathProgramCache]: Analyzing trace with hash 187308572, now seen corresponding path program 1 times [2021-11-21 00:33:01,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:01,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483199603] [2021-11-21 00:33:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:01,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:33:01,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:01,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483199603] [2021-11-21 00:33:01,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483199603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:01,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:01,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:33:01,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263927308] [2021-11-21 00:33:01,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:01,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:33:01,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:01,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:33:01,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:33:01,287 INFO L87 Difference]: Start difference. First operand 13345 states and 19441 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, (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 00:33:04,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:05,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:08,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:10,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:10,862 INFO L93 Difference]: Finished difference Result 13345 states and 19441 transitions. [2021-11-21 00:33:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:33:10,863 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, (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 136 [2021-11-21 00:33:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:10,902 INFO L225 Difference]: With dead ends: 13345 [2021-11-21 00:33:10,902 INFO L226 Difference]: Without dead ends: 13343 [2021-11-21 00:33:10,908 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 00:33:10,908 INFO L933 BasicCegarLoop]: 4533 mSDtfsCounter, 4976 mSDsluCounter, 5009 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4978 SdHoareTripleChecker+Valid, 9066 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:10,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4978 Valid, 9066 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2021-11-21 00:33:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13343 states. [2021-11-21 00:33:12,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13343 to 13343. [2021-11-21 00:33:12,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13343 states, 7822 states have (on average 1.2772948095116339) internal successors, (9991), 7991 states have internal predecessors, (9991), 4465 states have call successors, (4465), 1063 states have call predecessors, (4465), 1047 states have return successors, (4983), 4401 states have call predecessors, (4983), 4463 states have call successors, (4983) [2021-11-21 00:33:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13343 states to 13343 states and 19439 transitions. [2021-11-21 00:33:12,142 INFO L78 Accepts]: Start accepts. Automaton has 13343 states and 19439 transitions. Word has length 136 [2021-11-21 00:33:12,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:12,142 INFO L470 AbstractCegarLoop]: Abstraction has 13343 states and 19439 transitions. [2021-11-21 00:33:12,142 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, (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 00:33:12,142 INFO L276 IsEmpty]: Start isEmpty. Operand 13343 states and 19439 transitions. [2021-11-21 00:33:12,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:33:12,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:12,146 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 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, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:12,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-21 00:33:12,146 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:33:12,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:12,147 INFO L85 PathProgramCache]: Analyzing trace with hash 663784005, now seen corresponding path program 1 times [2021-11-21 00:33:12,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:12,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821039270] [2021-11-21 00:33:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:12,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-21 00:33:12,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:12,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821039270] [2021-11-21 00:33:12,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821039270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:12,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:12,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:33:12,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539474728] [2021-11-21 00:33:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:12,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:33:12,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:12,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:33:12,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:12,312 INFO L87 Difference]: Start difference. First operand 13343 states and 19439 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 00:33:17,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:19,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:21,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:22,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:27,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:29,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:29,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:29,881 INFO L93 Difference]: Finished difference Result 13343 states and 19439 transitions. [2021-11-21 00:33:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:33:29,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 144 [2021-11-21 00:33:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:29,923 INFO L225 Difference]: With dead ends: 13343 [2021-11-21 00:33:29,923 INFO L226 Difference]: Without dead ends: 13341 [2021-11-21 00:33:29,929 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 00:33:29,930 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 43 mSDsluCounter, 14972 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 18078 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:29,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 18078 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1912 Invalid, 2 Unknown, 0 Unchecked, 16.5s Time] [2021-11-21 00:33:29,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13341 states. [2021-11-21 00:33:31,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13341 to 13341. [2021-11-21 00:33:31,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13341 states, 7821 states have (on average 1.2768188211226186) internal successors, (9986), 7989 states have internal predecessors, (9986), 4465 states have call successors, (4465), 1063 states have call predecessors, (4465), 1047 states have return successors, (4983), 4401 states have call predecessors, (4983), 4463 states have call successors, (4983) [2021-11-21 00:33:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13341 states to 13341 states and 19434 transitions. [2021-11-21 00:33:31,073 INFO L78 Accepts]: Start accepts. Automaton has 13341 states and 19434 transitions. Word has length 144 [2021-11-21 00:33:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:31,074 INFO L470 AbstractCegarLoop]: Abstraction has 13341 states and 19434 transitions. [2021-11-21 00:33:31,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-21 00:33:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 13341 states and 19434 transitions. [2021-11-21 00:33:31,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-21 00:33:31,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:31,078 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:31,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-21 00:33:31,078 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:33:31,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:31,079 INFO L85 PathProgramCache]: Analyzing trace with hash 622577610, now seen corresponding path program 1 times [2021-11-21 00:33:31,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:31,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122201901] [2021-11-21 00:33:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:31,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:33:31,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:31,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122201901] [2021-11-21 00:33:31,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122201901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:31,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:31,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:33:31,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29258195] [2021-11-21 00:33:31,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:31,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:33:31,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:31,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:33:31,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:33:31,238 INFO L87 Difference]: Start difference. First operand 13341 states and 19434 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, (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 00:33:34,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:37,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:39,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:42,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:44,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:44,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:44,562 INFO L93 Difference]: Finished difference Result 13341 states and 19434 transitions. [2021-11-21 00:33:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:33:44,562 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, (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 141 [2021-11-21 00:33:44,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:44,610 INFO L225 Difference]: With dead ends: 13341 [2021-11-21 00:33:44,610 INFO L226 Difference]: Without dead ends: 13339 [2021-11-21 00:33:44,618 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 00:33:44,619 INFO L933 BasicCegarLoop]: 4529 mSDtfsCounter, 4968 mSDsluCounter, 5004 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4972 SdHoareTripleChecker+Valid, 9058 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:44,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4972 Valid, 9058 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2021-11-21 00:33:44,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13339 states. [2021-11-21 00:33:45,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13339 to 13339. [2021-11-21 00:33:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13339 states, 7820 states have (on average 1.2767263427109974) internal successors, (9984), 7987 states have internal predecessors, (9984), 4465 states have call successors, (4465), 1063 states have call predecessors, (4465), 1047 states have return successors, (4983), 4401 states have call predecessors, (4983), 4463 states have call successors, (4983) [2021-11-21 00:33:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13339 states to 13339 states and 19432 transitions. [2021-11-21 00:33:45,755 INFO L78 Accepts]: Start accepts. Automaton has 13339 states and 19432 transitions. Word has length 141 [2021-11-21 00:33:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:45,756 INFO L470 AbstractCegarLoop]: Abstraction has 13339 states and 19432 transitions. [2021-11-21 00:33:45,756 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, (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 00:33:45,756 INFO L276 IsEmpty]: Start isEmpty. Operand 13339 states and 19432 transitions. [2021-11-21 00:33:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-21 00:33:45,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:45,760 INFO L514 BasicCegarLoop]: trace histogram [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, 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 00:33:45,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-21 00:33:45,760 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_linux_usb_urb_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:33:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:45,761 INFO L85 PathProgramCache]: Analyzing trace with hash -305836024, now seen corresponding path program 1 times [2021-11-21 00:33:45,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:45,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356537912] [2021-11-21 00:33:45,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:45,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:33:45,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:45,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356537912] [2021-11-21 00:33:45,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356537912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:45,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:45,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:33:45,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840569763] [2021-11-21 00:33:45,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:45,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:33:45,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:45,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:33:45,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:33:45,923 INFO L87 Difference]: Start difference. First operand 13339 states and 19432 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 00:33:50,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:51,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:55,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:57,644 WARN L515 Checker$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 00:33:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:57,833 INFO L93 Difference]: Finished difference Result 13347 states and 19444 transitions. [2021-11-21 00:33:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:33:57,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 146 [2021-11-21 00:33:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:57,893 INFO L225 Difference]: With dead ends: 13347 [2021-11-21 00:33:57,893 INFO L226 Difference]: Without dead ends: 13215 [2021-11-21 00:33:57,908 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 00:33:57,909 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 4967 mSDsluCounter, 5005 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4969 SdHoareTripleChecker+Valid, 9057 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:57,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4969 Valid, 9057 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2021-11-21 00:33:57,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13215 states. [2021-11-21 00:33:59,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13215 to 13207. [2021-11-21 00:33:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13207 states, 7753 states have (on average 1.2782148845608152) internal successors, (9910), 7915 states have internal predecessors, (9910), 4421 states have call successors, (4421), 1043 states have call predecessors, (4421), 1027 states have return successors, (4939), 4361 states have call predecessors, (4939), 4419 states have call successors, (4939) [2021-11-21 00:33:59,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13207 states to 13207 states and 19270 transitions. [2021-11-21 00:33:59,471 INFO L78 Accepts]: Start accepts. Automaton has 13207 states and 19270 transitions. Word has length 146 [2021-11-21 00:33:59,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:59,471 INFO L470 AbstractCegarLoop]: Abstraction has 13207 states and 19270 transitions. [2021-11-21 00:33:59,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 00:33:59,471 INFO L276 IsEmpty]: Start isEmpty. Operand 13207 states and 19270 transitions. [2021-11-21 00:33:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-21 00:33:59,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:59,477 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:33:59,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-21 00:33:59,477 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:33:59,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:59,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1080411499, now seen corresponding path program 1 times [2021-11-21 00:33:59,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:59,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682652465] [2021-11-21 00:33:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:59,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-21 00:33:59,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:59,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682652465] [2021-11-21 00:33:59,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682652465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:59,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:59,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:33:59,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583895891] [2021-11-21 00:33:59,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:59,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:33:59,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:59,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:33:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:59,724 INFO L87 Difference]: Start difference. First operand 13207 states and 19270 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 00:34:03,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:06,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:08,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:09,923 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:14,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:16,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:18,152 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:20,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:20,347 INFO L93 Difference]: Finished difference Result 14449 states and 20813 transitions. [2021-11-21 00:34:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:34:20,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 194 [2021-11-21 00:34:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:20,388 INFO L225 Difference]: With dead ends: 14449 [2021-11-21 00:34:20,388 INFO L226 Difference]: Without dead ends: 14447 [2021-11-21 00:34:20,400 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 00:34:20,401 INFO L933 BasicCegarLoop]: 4724 mSDtfsCounter, 4773 mSDsluCounter, 11230 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4780 SdHoareTripleChecker+Valid, 14903 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:20,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4780 Valid, 14903 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1539 Invalid, 4 Unknown, 0 Unchecked, 19.4s Time] [2021-11-21 00:34:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14447 states. [2021-11-21 00:34:21,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14447 to 14431. [2021-11-21 00:34:21,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14431 states, 8453 states have (on average 1.2712646397728617) internal successors, (10746), 8621 states have internal predecessors, (10746), 4759 states have call successors, (4759), 1233 states have call predecessors, (4759), 1213 states have return successors, (5285), 4693 states have call predecessors, (5285), 4757 states have call successors, (5285) [2021-11-21 00:34:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14431 states to 14431 states and 20790 transitions. [2021-11-21 00:34:21,809 INFO L78 Accepts]: Start accepts. Automaton has 14431 states and 20790 transitions. Word has length 194 [2021-11-21 00:34:21,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:21,810 INFO L470 AbstractCegarLoop]: Abstraction has 14431 states and 20790 transitions. [2021-11-21 00:34:21,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 00:34:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 14431 states and 20790 transitions. [2021-11-21 00:34:21,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-21 00:34:21,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:21,817 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-21 00:34:21,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-21 00:34:21,817 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:34:21,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1423943433, now seen corresponding path program 1 times [2021-11-21 00:34:21,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:21,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955275855] [2021-11-21 00:34:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:21,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-11-21 00:34:22,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:22,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955275855] [2021-11-21 00:34:22,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955275855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:22,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:22,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:34:22,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3017433] [2021-11-21 00:34:22,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:22,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:34:22,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:34:22,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:34:22,002 INFO L87 Difference]: Start difference. First operand 14431 states and 20790 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 00:34:25,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:30,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:35,492 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 00:34:35,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:35,652 INFO L93 Difference]: Finished difference Result 28317 states and 40853 transitions. [2021-11-21 00:34:35,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:34:35,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 208 [2021-11-21 00:34:35,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:35,704 INFO L225 Difference]: With dead ends: 28317 [2021-11-21 00:34:35,704 INFO L226 Difference]: Without dead ends: 14455 [2021-11-21 00:34:35,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:34:35,764 INFO L933 BasicCegarLoop]: 4512 mSDtfsCounter, 3 mSDsluCounter, 19919 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22550 SdHoareTripleChecker+Invalid, 2379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:35,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 22550 Invalid, 2379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2377 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2021-11-21 00:34:35,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14455 states. [2021-11-21 00:34:37,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14455 to 14455. [2021-11-21 00:34:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14455 states, 8469 states have (on average 1.270752154917936) internal successors, (10762), 8641 states have internal predecessors, (10762), 4759 states have call successors, (4759), 1233 states have call predecessors, (4759), 1221 states have return successors, (5321), 4697 states have call predecessors, (5321), 4757 states have call successors, (5321) [2021-11-21 00:34:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14455 states to 14455 states and 20842 transitions. [2021-11-21 00:34:37,162 INFO L78 Accepts]: Start accepts. Automaton has 14455 states and 20842 transitions. Word has length 208 [2021-11-21 00:34:37,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:37,162 INFO L470 AbstractCegarLoop]: Abstraction has 14455 states and 20842 transitions. [2021-11-21 00:34:37,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 00:34:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 14455 states and 20842 transitions. [2021-11-21 00:34:37,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-21 00:34:37,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:37,173 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-21 00:34:37,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-21 00:34:37,174 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:34:37,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash 178975556, now seen corresponding path program 1 times [2021-11-21 00:34:37,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:37,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626282527] [2021-11-21 00:34:37,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:37,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2021-11-21 00:34:37,375 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:37,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626282527] [2021-11-21 00:34:37,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626282527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:37,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:37,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:34:37,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633413634] [2021-11-21 00:34:37,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:37,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:34:37,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:37,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:34:37,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:34:37,378 INFO L87 Difference]: Start difference. First operand 14455 states and 20842 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 00:34:41,355 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:43,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:45,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:49,682 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:56,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:58,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:59,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:01,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:01,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:01,605 INFO L93 Difference]: Finished difference Result 28357 states and 40925 transitions. [2021-11-21 00:35:01,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:35:01,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 213 [2021-11-21 00:35:01,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:01,660 INFO L225 Difference]: With dead ends: 28357 [2021-11-21 00:35:01,660 INFO L226 Difference]: Without dead ends: 14471 [2021-11-21 00:35:01,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:35:01,708 INFO L933 BasicCegarLoop]: 4512 mSDtfsCounter, 3 mSDsluCounter, 19926 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22548 SdHoareTripleChecker+Invalid, 2389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:01,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 22548 Invalid, 2389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2383 Invalid, 6 Unknown, 0 Unchecked, 22.9s Time] [2021-11-21 00:35:01,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14471 states. [2021-11-21 00:35:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14471 to 14471. [2021-11-21 00:35:02,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14471 states, 8481 states have (on average 1.2703690602523288) internal successors, (10774), 8653 states have internal predecessors, (10774), 4759 states have call successors, (4759), 1233 states have call predecessors, (4759), 1225 states have return successors, (5329), 4701 states have call predecessors, (5329), 4757 states have call successors, (5329) [2021-11-21 00:35:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14471 states to 14471 states and 20862 transitions. [2021-11-21 00:35:03,049 INFO L78 Accepts]: Start accepts. Automaton has 14471 states and 20862 transitions. Word has length 213 [2021-11-21 00:35:03,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:03,050 INFO L470 AbstractCegarLoop]: Abstraction has 14471 states and 20862 transitions. [2021-11-21 00:35:03,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 00:35:03,050 INFO L276 IsEmpty]: Start isEmpty. Operand 14471 states and 20862 transitions. [2021-11-21 00:35:03,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-21 00:35:03,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:03,062 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:35:03,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-21 00:35:03,063 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:35:03,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:03,063 INFO L85 PathProgramCache]: Analyzing trace with hash 325837701, now seen corresponding path program 1 times [2021-11-21 00:35:03,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:35:03,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326781085] [2021-11-21 00:35:03,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:03,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:35:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-21 00:35:03,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:35:03,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326781085] [2021-11-21 00:35:03,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326781085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:35:03,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:35:03,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:35:03,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864381689] [2021-11-21 00:35:03,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:35:03,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:35:03,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:35:03,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:35:03,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:35:03,399 INFO L87 Difference]: Start difference. First operand 14471 states and 20862 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-21 00:35:06,038 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:08,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:12,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:17,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:17,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:17,919 INFO L93 Difference]: Finished difference Result 29253 states and 42429 transitions. [2021-11-21 00:35:17,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:35:17,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 218 [2021-11-21 00:35:17,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:17,977 INFO L225 Difference]: With dead ends: 29253 [2021-11-21 00:35:17,977 INFO L226 Difference]: Without dead ends: 15351 [2021-11-21 00:35:18,026 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 00:35:18,027 INFO L933 BasicCegarLoop]: 4576 mSDtfsCounter, 429 mSDsluCounter, 9693 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 163 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 13348 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:18,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 13348 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1592 Invalid, 2 Unknown, 0 Unchecked, 13.0s Time] [2021-11-21 00:35:18,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15351 states. [2021-11-21 00:35:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15351 to 14719. [2021-11-21 00:35:19,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14719 states, 8717 states have (on average 1.2680968223012505) internal successors, (11054), 8893 states have internal predecessors, (11054), 4767 states have call successors, (4767), 1233 states have call predecessors, (4767), 1229 states have return successors, (5349), 4709 states have call predecessors, (5349), 4765 states have call successors, (5349) [2021-11-21 00:35:19,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14719 states to 14719 states and 21170 transitions. [2021-11-21 00:35:19,426 INFO L78 Accepts]: Start accepts. Automaton has 14719 states and 21170 transitions. Word has length 218 [2021-11-21 00:35:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:19,426 INFO L470 AbstractCegarLoop]: Abstraction has 14719 states and 21170 transitions. [2021-11-21 00:35:19,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 4 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-21 00:35:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 14719 states and 21170 transitions. [2021-11-21 00:35:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-21 00:35:19,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:19,435 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:35:19,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-21 00:35:19,435 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:35:19,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:19,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1189684244, now seen corresponding path program 1 times [2021-11-21 00:35:19,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:35:19,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19775685] [2021-11-21 00:35:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:19,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:35:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-21 00:35:19,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:35:19,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19775685] [2021-11-21 00:35:19,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19775685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:35:19,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:35:19,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:35:19,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912715424] [2021-11-21 00:35:19,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:35:19,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:35:19,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:35:19,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:35:19,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:35:19,722 INFO L87 Difference]: Start difference. First operand 14719 states and 21170 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-21 00:35:23,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:28,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:36,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:36,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:36,587 INFO L93 Difference]: Finished difference Result 14733 states and 21181 transitions. [2021-11-21 00:35:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:35:36,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) Word has length 206 [2021-11-21 00:35:36,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:36,634 INFO L225 Difference]: With dead ends: 14733 [2021-11-21 00:35:36,634 INFO L226 Difference]: Without dead ends: 14731 [2021-11-21 00:35:36,642 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 00:35:36,643 INFO L933 BasicCegarLoop]: 5048 mSDtfsCounter, 814 mSDsluCounter, 16041 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 19512 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:36,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 19512 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2153 Invalid, 2 Unknown, 0 Unchecked, 15.5s Time] [2021-11-21 00:35:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14731 states. [2021-11-21 00:35:37,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14731 to 14727. [2021-11-21 00:35:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14727 states, 8723 states have (on average 1.2676831365355956) internal successors, (11058), 8899 states have internal predecessors, (11058), 4767 states have call successors, (4767), 1235 states have call predecessors, (4767), 1231 states have return successors, (5349), 4709 states have call predecessors, (5349), 4765 states have call successors, (5349) [2021-11-21 00:35:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14727 states to 14727 states and 21174 transitions. [2021-11-21 00:35:37,969 INFO L78 Accepts]: Start accepts. Automaton has 14727 states and 21174 transitions. Word has length 206 [2021-11-21 00:35:37,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:37,969 INFO L470 AbstractCegarLoop]: Abstraction has 14727 states and 21174 transitions. [2021-11-21 00:35:37,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-21 00:35:37,969 INFO L276 IsEmpty]: Start isEmpty. Operand 14727 states and 21174 transitions. [2021-11-21 00:35:37,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-21 00:35:37,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:37,977 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:35:37,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-21 00:35:37,977 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:35:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:37,978 INFO L85 PathProgramCache]: Analyzing trace with hash -211077257, now seen corresponding path program 1 times [2021-11-21 00:35:37,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:35:37,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347097121] [2021-11-21 00:35:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:37,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:35:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-21 00:35:38,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:35:38,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347097121] [2021-11-21 00:35:38,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347097121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:35:38,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:35:38,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 00:35:38,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527761182] [2021-11-21 00:35:38,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:35:38,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:35:38,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:35:38,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:35:38,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:35:38,315 INFO L87 Difference]: Start difference. First operand 14727 states and 21174 transitions. Second operand has 10 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (37), 5 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-21 00:35:44,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:51,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:58,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:00,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:03,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:05,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:07,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:09,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:10,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:12,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:14,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:16,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:36:17,062 INFO L93 Difference]: Finished difference Result 29497 states and 42512 transitions. [2021-11-21 00:36:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:36:17,063 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (37), 5 states have call predecessors, (37), 2 states have call successors, (37) Word has length 202 [2021-11-21 00:36:17,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:36:17,126 INFO L225 Difference]: With dead ends: 29497 [2021-11-21 00:36:17,126 INFO L226 Difference]: Without dead ends: 14789 [2021-11-21 00:36:17,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:36:17,177 INFO L933 BasicCegarLoop]: 4518 mSDtfsCounter, 7 mSDsluCounter, 39889 mSDsCounter, 0 mSdLazyCounter, 4283 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40648 SdHoareTripleChecker+Invalid, 4294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4283 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:36:17,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 40648 Invalid, 4294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 4283 Invalid, 9 Unknown, 0 Unchecked, 37.2s Time] [2021-11-21 00:36:17,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14789 states. [2021-11-21 00:36:18,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14789 to 14753. [2021-11-21 00:36:18,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14753 states, 8741 states have (on average 1.2671319071044502) internal successors, (11076), 8915 states have internal predecessors, (11076), 4769 states have call successors, (4769), 1235 states have call predecessors, (4769), 1237 states have return successors, (5405), 4719 states have call predecessors, (5405), 4767 states have call successors, (5405) [2021-11-21 00:36:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14753 states to 14753 states and 21250 transitions. [2021-11-21 00:36:18,504 INFO L78 Accepts]: Start accepts. Automaton has 14753 states and 21250 transitions. Word has length 202 [2021-11-21 00:36:18,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:36:18,505 INFO L470 AbstractCegarLoop]: Abstraction has 14753 states and 21250 transitions. [2021-11-21 00:36:18,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (37), 5 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-21 00:36:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 14753 states and 21250 transitions. [2021-11-21 00:36:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-21 00:36:18,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:36:18,514 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:36:18,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-21 00:36:18,514 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:36:18,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:36:18,515 INFO L85 PathProgramCache]: Analyzing trace with hash -72806049, now seen corresponding path program 1 times [2021-11-21 00:36:18,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:36:18,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433551217] [2021-11-21 00:36:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:36:18,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:36:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:36:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-21 00:36:18,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:36:18,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433551217] [2021-11-21 00:36:18,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433551217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:36:18,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:36:18,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:36:18,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556504780] [2021-11-21 00:36:18,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:36:18,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:36:18,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:36:18,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:36:18,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:36:18,902 INFO L87 Difference]: Start difference. First operand 14753 states and 21250 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-21 00:36:25,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:26,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:31,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:33,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:37,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:39,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:39,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:36:39,579 INFO L93 Difference]: Finished difference Result 14893 states and 21378 transitions. [2021-11-21 00:36:39,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:36:39,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 229 [2021-11-21 00:36:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:36:39,629 INFO L225 Difference]: With dead ends: 14893 [2021-11-21 00:36:39,629 INFO L226 Difference]: Without dead ends: 14891 [2021-11-21 00:36:39,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 00:36:39,639 INFO L933 BasicCegarLoop]: 4520 mSDtfsCounter, 4629 mSDsluCounter, 10268 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4634 SdHoareTripleChecker+Valid, 13802 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:36:39,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4634 Valid, 13802 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1473 Invalid, 4 Unknown, 0 Unchecked, 19.4s Time] [2021-11-21 00:36:39,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14891 states. [2021-11-21 00:36:40,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14891 to 14889. [2021-11-21 00:36:40,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14889 states, 8827 states have (on average 1.2670216381556587) internal successors, (11184), 9007 states have internal predecessors, (11184), 4775 states have call successors, (4775), 1279 states have call predecessors, (4775), 1281 states have return successors, (5411), 4725 states have call predecessors, (5411), 4773 states have call successors, (5411) [2021-11-21 00:36:40,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14889 states to 14889 states and 21370 transitions. [2021-11-21 00:36:40,966 INFO L78 Accepts]: Start accepts. Automaton has 14889 states and 21370 transitions. Word has length 229 [2021-11-21 00:36:40,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:36:40,966 INFO L470 AbstractCegarLoop]: Abstraction has 14889 states and 21370 transitions. [2021-11-21 00:36:40,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-21 00:36:40,967 INFO L276 IsEmpty]: Start isEmpty. Operand 14889 states and 21370 transitions. [2021-11-21 00:36:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-21 00:36:41,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:36:41,070 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:36:41,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-21 00:36:41,070 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:36:41,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:36:41,070 INFO L85 PathProgramCache]: Analyzing trace with hash -3274914, now seen corresponding path program 1 times [2021-11-21 00:36:41,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:36:41,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087299346] [2021-11-21 00:36:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:36:41,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:36:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:36:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-21 00:36:41,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:36:41,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087299346] [2021-11-21 00:36:41,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087299346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:36:41,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:36:41,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:36:41,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622565396] [2021-11-21 00:36:41,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:36:41,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:36:41,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:36:41,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:36:41,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:36:41,238 INFO L87 Difference]: Start difference. First operand 14889 states and 21370 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-21 00:36:45,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:36:49,840 WARN L515 Checker$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 00:36:50,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:36:50,161 INFO L93 Difference]: Finished difference Result 29309 states and 42158 transitions. [2021-11-21 00:36:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:36:50,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 215 [2021-11-21 00:36:50,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:36:50,211 INFO L225 Difference]: With dead ends: 29309 [2021-11-21 00:36:50,211 INFO L226 Difference]: Without dead ends: 14989 [2021-11-21 00:36:50,246 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 00:36:50,247 INFO L933 BasicCegarLoop]: 4524 mSDtfsCounter, 25 mSDsluCounter, 4916 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 8975 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:36:50,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 8975 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1004 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-21 00:36:50,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14989 states. [2021-11-21 00:36:51,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14989 to 14893. [2021-11-21 00:36:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14893 states, 8831 states have (on average 1.2669006907484996) internal successors, (11188), 9011 states have internal predecessors, (11188), 4775 states have call successors, (4775), 1279 states have call predecessors, (4775), 1281 states have return successors, (5411), 4725 states have call predecessors, (5411), 4773 states have call successors, (5411) [2021-11-21 00:36:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14893 states to 14893 states and 21374 transitions. [2021-11-21 00:36:51,772 INFO L78 Accepts]: Start accepts. Automaton has 14893 states and 21374 transitions. Word has length 215 [2021-11-21 00:36:51,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:36:51,773 INFO L470 AbstractCegarLoop]: Abstraction has 14893 states and 21374 transitions. [2021-11-21 00:36:51,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-21 00:36:51,773 INFO L276 IsEmpty]: Start isEmpty. Operand 14893 states and 21374 transitions. [2021-11-21 00:36:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-21 00:36:51,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:36:51,786 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:36:51,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-21 00:36:51,787 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:36:51,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:36:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash 614021298, now seen corresponding path program 1 times [2021-11-21 00:36:51,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:36:51,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538480804] [2021-11-21 00:36:51,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:36:51,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:36:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:36:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2021-11-21 00:36:52,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:36:52,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538480804] [2021-11-21 00:36:52,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538480804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:36:52,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:36:52,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:36:52,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21163394] [2021-11-21 00:36:52,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:36:52,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:36:52,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:36:52,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:36:52,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:36:52,063 INFO L87 Difference]: Start difference. First operand 14893 states and 21374 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 4 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-21 00:37:00,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:06,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:08,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:10,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:13,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:13,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:13,863 INFO L93 Difference]: Finished difference Result 29257 states and 42079 transitions. [2021-11-21 00:37:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:37:13,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 4 states have call predecessors, (39), 3 states have call successors, (39) Word has length 250 [2021-11-21 00:37:13,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:13,915 INFO L225 Difference]: With dead ends: 29257 [2021-11-21 00:37:13,915 INFO L226 Difference]: Without dead ends: 14933 [2021-11-21 00:37:13,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:37:13,959 INFO L933 BasicCegarLoop]: 4514 mSDtfsCounter, 22 mSDsluCounter, 19892 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22519 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:13,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 22519 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2381 Invalid, 3 Unknown, 0 Unchecked, 20.3s Time] [2021-11-21 00:37:13,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14933 states. [2021-11-21 00:37:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14933 to 14925. [2021-11-21 00:37:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14925 states, 8851 states have (on average 1.2662975934922607) internal successors, (11208), 9031 states have internal predecessors, (11208), 4783 states have call successors, (4783), 1279 states have call predecessors, (4783), 1285 states have return successors, (5475), 4737 states have call predecessors, (5475), 4781 states have call successors, (5475) [2021-11-21 00:37:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14925 states to 14925 states and 21466 transitions. [2021-11-21 00:37:15,537 INFO L78 Accepts]: Start accepts. Automaton has 14925 states and 21466 transitions. Word has length 250 [2021-11-21 00:37:15,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:15,537 INFO L470 AbstractCegarLoop]: Abstraction has 14925 states and 21466 transitions. [2021-11-21 00:37:15,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (39), 4 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-21 00:37:15,538 INFO L276 IsEmpty]: Start isEmpty. Operand 14925 states and 21466 transitions. [2021-11-21 00:37:15,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-21 00:37:15,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:15,544 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:37:15,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-21 00:37:15,544 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:37:15,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:15,545 INFO L85 PathProgramCache]: Analyzing trace with hash -106469557, now seen corresponding path program 1 times [2021-11-21 00:37:15,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:15,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288861417] [2021-11-21 00:37:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:15,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-21 00:37:15,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:15,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288861417] [2021-11-21 00:37:15,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288861417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:15,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:15,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:37:15,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285571731] [2021-11-21 00:37:15,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:15,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:37:15,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:15,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:37:15,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:37:15,808 INFO L87 Difference]: Start difference. First operand 14925 states and 21466 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-21 00:37:20,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:26,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:28,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:36,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:36,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:36,754 INFO L93 Difference]: Finished difference Result 29279 states and 42274 transitions. [2021-11-21 00:37:36,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:37:36,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 216 [2021-11-21 00:37:36,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:36,813 INFO L225 Difference]: With dead ends: 29279 [2021-11-21 00:37:36,813 INFO L226 Difference]: Without dead ends: 14923 [2021-11-21 00:37:36,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:37:36,855 INFO L933 BasicCegarLoop]: 4504 mSDtfsCounter, 4899 mSDsluCounter, 12457 mSDsCounter, 0 mSdLazyCounter, 4354 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4909 SdHoareTripleChecker+Valid, 15550 SdHoareTripleChecker+Invalid, 4357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4354 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:36,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4909 Valid, 15550 Invalid, 4357 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4354 Invalid, 2 Unknown, 0 Unchecked, 19.2s Time] [2021-11-21 00:37:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14923 states. [2021-11-21 00:37:38,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14923 to 14915. [2021-11-21 00:37:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14915 states, 8842 states have (on average 1.265663876950916) internal successors, (11191), 9021 states have internal predecessors, (11191), 4783 states have call successors, (4783), 1279 states have call predecessors, (4783), 1285 states have return successors, (5475), 4737 states have call predecessors, (5475), 4781 states have call successors, (5475) [2021-11-21 00:37:38,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14915 states to 14915 states and 21449 transitions. [2021-11-21 00:37:38,286 INFO L78 Accepts]: Start accepts. Automaton has 14915 states and 21449 transitions. Word has length 216 [2021-11-21 00:37:38,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:38,287 INFO L470 AbstractCegarLoop]: Abstraction has 14915 states and 21449 transitions. [2021-11-21 00:37:38,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-21 00:37:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand 14915 states and 21449 transitions. [2021-11-21 00:37:38,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-21 00:37:38,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:38,294 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:37:38,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-21 00:37:38,294 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ldv_check_alloc_nonatomicErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:37:38,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:38,295 INFO L85 PathProgramCache]: Analyzing trace with hash 946088926, now seen corresponding path program 1 times [2021-11-21 00:37:38,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:38,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734167617] [2021-11-21 00:37:38,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:38,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-21 00:37:38,522 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:38,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734167617] [2021-11-21 00:37:38,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734167617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:38,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:38,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:37:38,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909057640] [2021-11-21 00:37:38,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:38,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:37:38,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:38,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:37:38,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:37:38,524 INFO L87 Difference]: Start difference. First operand 14915 states and 21449 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-21 00:37:41,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:45,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:46,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:50,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:52,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:54,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:37:54,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:37:54,730 INFO L93 Difference]: Finished difference Result 14927 states and 21465 transitions. [2021-11-21 00:37:54,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:37:54,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 229 [2021-11-21 00:37:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:37:54,773 INFO L225 Difference]: With dead ends: 14927 [2021-11-21 00:37:54,773 INFO L226 Difference]: Without dead ends: 14925 [2021-11-21 00:37:54,780 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 00:37:54,781 INFO L933 BasicCegarLoop]: 4504 mSDtfsCounter, 4886 mSDsluCounter, 5004 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4892 SdHoareTripleChecker+Valid, 9031 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:37:54,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4892 Valid, 9031 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 952 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time] [2021-11-21 00:37:54,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14925 states. [2021-11-21 00:37:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14925 to 14913. [2021-11-21 00:37:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14913 states, 8841 states have (on average 1.2652414885193983) internal successors, (11186), 9019 states have internal predecessors, (11186), 4783 states have call successors, (4783), 1279 states have call predecessors, (4783), 1285 states have return successors, (5475), 4737 states have call predecessors, (5475), 4781 states have call successors, (5475) [2021-11-21 00:37:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14913 states to 14913 states and 21444 transitions. [2021-11-21 00:37:56,157 INFO L78 Accepts]: Start accepts. Automaton has 14913 states and 21444 transitions. Word has length 229 [2021-11-21 00:37:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:37:56,157 INFO L470 AbstractCegarLoop]: Abstraction has 14913 states and 21444 transitions. [2021-11-21 00:37:56,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-21 00:37:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 14913 states and 21444 transitions. [2021-11-21 00:37:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-21 00:37:56,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:37:56,165 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:37:56,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-21 00:37:56,166 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:37:56,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:37:56,166 INFO L85 PathProgramCache]: Analyzing trace with hash 197553320, now seen corresponding path program 1 times [2021-11-21 00:37:56,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:37:56,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321269943] [2021-11-21 00:37:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:37:56,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:37:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:37:56,385 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-21 00:37:56,386 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:37:56,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321269943] [2021-11-21 00:37:56,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321269943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:37:56,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:37:56,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:37:56,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436089006] [2021-11-21 00:37:56,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:37:56,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:37:56,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:37:56,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:37:56,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:37:56,388 INFO L87 Difference]: Start difference. First operand 14913 states and 21444 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-21 00:38:00,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:05,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:11,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:14,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:16,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:16,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:38:16,521 INFO L93 Difference]: Finished difference Result 29265 states and 42155 transitions. [2021-11-21 00:38:16,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:38:16,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) Word has length 230 [2021-11-21 00:38:16,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:38:16,578 INFO L225 Difference]: With dead ends: 29265 [2021-11-21 00:38:16,578 INFO L226 Difference]: Without dead ends: 14921 [2021-11-21 00:38:16,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:38:16,626 INFO L933 BasicCegarLoop]: 4502 mSDtfsCounter, 1 mSDsluCounter, 19871 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22488 SdHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:38:16,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 22488 Invalid, 2396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2391 Invalid, 5 Unknown, 0 Unchecked, 18.6s Time] [2021-11-21 00:38:16,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14921 states. [2021-11-21 00:38:18,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14921 to 14921. [2021-11-21 00:38:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14921 states, 8849 states have (on average 1.2650016951067917) internal successors, (11194), 9023 states have internal predecessors, (11194), 4783 states have call successors, (4783), 1279 states have call predecessors, (4783), 1285 states have return successors, (5475), 4741 states have call predecessors, (5475), 4781 states have call successors, (5475) [2021-11-21 00:38:18,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14921 states to 14921 states and 21452 transitions. [2021-11-21 00:38:18,874 INFO L78 Accepts]: Start accepts. Automaton has 14921 states and 21452 transitions. Word has length 230 [2021-11-21 00:38:18,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:38:18,875 INFO L470 AbstractCegarLoop]: Abstraction has 14921 states and 21452 transitions. [2021-11-21 00:38:18,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (37), 3 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-21 00:38:18,875 INFO L276 IsEmpty]: Start isEmpty. Operand 14921 states and 21452 transitions. [2021-11-21 00:38:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-21 00:38:18,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:38:18,884 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:38:18,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-21 00:38:18,884 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 32 more)] === [2021-11-21 00:38:18,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:38:18,884 INFO L85 PathProgramCache]: Analyzing trace with hash 316820901, now seen corresponding path program 1 times [2021-11-21 00:38:18,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:38:18,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152250298] [2021-11-21 00:38:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:38:18,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:38:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:38:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-11-21 00:38:19,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:38:19,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152250298] [2021-11-21 00:38:19,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152250298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:38:19,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:38:19,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:38:19,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688569357] [2021-11-21 00:38:19,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:38:19,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:38:19,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:38:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:38:19,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:38:19,215 INFO L87 Difference]: Start difference. First operand 14921 states and 21452 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2021-11-21 00:38:23,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:38:27,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []