./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF --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 f0d35ad3183ac446cae7457c51fa9452f8942f4b349e6e40633392db1dd8aa97 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:36:30,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:36:30,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:36:30,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:36:30,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:36:30,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:36:30,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:36:30,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:36:30,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:36:30,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:36:30,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:36:30,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:36:30,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:36:30,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:36:30,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:36:30,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:36:30,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:36:30,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:36:31,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:36:31,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:36:31,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:36:31,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:36:31,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:36:31,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:36:31,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:36:31,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:36:31,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:36:31,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:36:31,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:36:31,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:36:31,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:36:31,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:36:31,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:36:31,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:36:31,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:36:31,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:36:31,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:36:31,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:36:31,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:36:31,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:36:31,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:36:31,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 02:36:31,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:36:31,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:36:31,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:36:31,105 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:36:31,105 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:36:31,106 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:36:31,106 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:36:31,106 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:36:31,106 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:36:31,107 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:36:31,115 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:36:31,115 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:36:31,115 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:36:31,116 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:36:31,116 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:36:31,116 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:36:31,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:36:31,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:36:31,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:36:31,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:36:31,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:36:31,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:36:31,118 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:36:31,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:36:31,119 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:36:31,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:36:31,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:36:31,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:36:31,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:36:31,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:36:31,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:36:31,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:36:31,121 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:36:31,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:36:31,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:36:31,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:36:31,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:36:31,122 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_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0d35ad3183ac446cae7457c51fa9452f8942f4b349e6e40633392db1dd8aa97 [2021-11-13 02:36:31,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:36:31,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:36:31,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:36:31,522 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:36:31,523 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:36:31,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i [2021-11-13 02:36:31,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/data/b0276ffee/3bccf94a9f8c4b2baf64b96d82e876fe/FLAGa687e36e1 [2021-11-13 02:36:32,701 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:36:32,702 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i [2021-11-13 02:36:32,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/data/b0276ffee/3bccf94a9f8c4b2baf64b96d82e876fe/FLAGa687e36e1 [2021-11-13 02:36:32,934 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/data/b0276ffee/3bccf94a9f8c4b2baf64b96d82e876fe [2021-11-13 02:36:32,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:36:32,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:36:32,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:36:32,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:36:32,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:36:32,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:36:32" (1/1) ... [2021-11-13 02:36:32,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5b6ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:32, skipping insertion in model container [2021-11-13 02:36:32,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:36:32" (1/1) ... [2021-11-13 02:36:32,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:36:33,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:36:35,466 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:36:36,010 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:36:38,458 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385539,385552] [2021-11-13 02:36:38,461 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385684,385697] [2021-11-13 02:36:38,461 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385830,385843] [2021-11-13 02:36:38,462 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385995,386008] [2021-11-13 02:36:38,462 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386153,386166] [2021-11-13 02:36:38,463 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386311,386324] [2021-11-13 02:36:38,463 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386469,386482] [2021-11-13 02:36:38,464 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386629,386642] [2021-11-13 02:36:38,464 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386788,386801] [2021-11-13 02:36:38,465 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386927,386940] [2021-11-13 02:36:38,465 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387069,387082] [2021-11-13 02:36:38,466 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387218,387231] [2021-11-13 02:36:38,466 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387357,387370] [2021-11-13 02:36:38,467 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387512,387525] [2021-11-13 02:36:38,467 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387672,387685] [2021-11-13 02:36:38,467 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387823,387836] [2021-11-13 02:36:38,468 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387974,387987] [2021-11-13 02:36:38,468 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388126,388139] [2021-11-13 02:36:38,469 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388275,388288] [2021-11-13 02:36:38,469 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388423,388436] [2021-11-13 02:36:38,470 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388580,388593] [2021-11-13 02:36:38,470 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388729,388742] [2021-11-13 02:36:38,471 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388885,388898] [2021-11-13 02:36:38,471 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389038,389051] [2021-11-13 02:36:38,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389184,389197] [2021-11-13 02:36:38,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389327,389340] [2021-11-13 02:36:38,473 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389479,389492] [2021-11-13 02:36:38,473 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389625,389638] [2021-11-13 02:36:38,474 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389770,389783] [2021-11-13 02:36:38,474 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389924,389937] [2021-11-13 02:36:38,475 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390075,390088] [2021-11-13 02:36:38,475 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390230,390243] [2021-11-13 02:36:38,476 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390382,390395] [2021-11-13 02:36:38,476 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390537,390550] [2021-11-13 02:36:38,477 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390701,390714] [2021-11-13 02:36:38,477 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390857,390870] [2021-11-13 02:36:38,478 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391021,391034] [2021-11-13 02:36:38,478 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391163,391176] [2021-11-13 02:36:38,479 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391321,391334] [2021-11-13 02:36:38,479 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391488,391501] [2021-11-13 02:36:38,480 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391647,391660] [2021-11-13 02:36:38,480 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391806,391819] [2021-11-13 02:36:38,480 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391955,391968] [2021-11-13 02:36:38,481 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392102,392115] [2021-11-13 02:36:38,481 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392241,392254] [2021-11-13 02:36:38,482 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392404,392417] [2021-11-13 02:36:38,482 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392570,392583] [2021-11-13 02:36:38,483 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392734,392747] [2021-11-13 02:36:38,483 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392899,392912] [2021-11-13 02:36:38,483 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393064,393077] [2021-11-13 02:36:38,484 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393230,393243] [2021-11-13 02:36:38,484 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393395,393408] [2021-11-13 02:36:38,485 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393562,393575] [2021-11-13 02:36:38,485 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393722,393735] [2021-11-13 02:36:38,486 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393884,393897] [2021-11-13 02:36:38,487 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394043,394056] [2021-11-13 02:36:38,487 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394189,394202] [2021-11-13 02:36:38,488 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394332,394345] [2021-11-13 02:36:38,488 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394476,394489] [2021-11-13 02:36:38,488 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394619,394632] [2021-11-13 02:36:38,489 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394763,394776] [2021-11-13 02:36:38,489 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394904,394917] [2021-11-13 02:36:38,490 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395042,395055] [2021-11-13 02:36:38,490 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395200,395213] [2021-11-13 02:36:38,491 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395359,395372] [2021-11-13 02:36:38,491 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395515,395528] [2021-11-13 02:36:38,491 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395664,395677] [2021-11-13 02:36:38,492 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395816,395829] [2021-11-13 02:36:38,492 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395967,395980] [2021-11-13 02:36:38,493 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396116,396129] [2021-11-13 02:36:38,493 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396268,396281] [2021-11-13 02:36:38,494 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396416,396429] [2021-11-13 02:36:38,494 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396569,396582] [2021-11-13 02:36:38,494 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396720,396733] [2021-11-13 02:36:38,495 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396870,396883] [2021-11-13 02:36:38,495 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397017,397030] [2021-11-13 02:36:38,496 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397168,397181] [2021-11-13 02:36:38,496 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397319,397332] [2021-11-13 02:36:38,497 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397467,397480] [2021-11-13 02:36:38,497 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397633,397646] [2021-11-13 02:36:38,497 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397802,397815] [2021-11-13 02:36:38,498 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397969,397982] [2021-11-13 02:36:38,498 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398137,398150] [2021-11-13 02:36:38,499 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398287,398300] [2021-11-13 02:36:38,499 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398434,398447] [2021-11-13 02:36:38,500 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398595,398608] [2021-11-13 02:36:38,500 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398765,398778] [2021-11-13 02:36:38,500 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398927,398940] [2021-11-13 02:36:38,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:36:38,595 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 02:36:38,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@90ff290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:38, skipping insertion in model container [2021-11-13 02:36:38,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:36:38,596 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:36:38,598 INFO L158 Benchmark]: Toolchain (without parser) took 5659.95ms. Allocated memory was 121.6MB in the beginning and 192.9MB in the end (delta: 71.3MB). Free memory was 92.4MB in the beginning and 138.6MB in the end (delta: -46.2MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. [2021-11-13 02:36:38,599 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:36:38,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5657.33ms. Allocated memory was 121.6MB in the beginning and 192.9MB in the end (delta: 71.3MB). Free memory was 92.4MB in the beginning and 138.6MB in the end (delta: -46.2MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. [2021-11-13 02:36:38,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5657.33ms. Allocated memory was 121.6MB in the beginning and 192.9MB in the end (delta: 71.3MB). Free memory was 92.4MB in the beginning and 138.6MB in the end (delta: -46.2MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6614]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF --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 f0d35ad3183ac446cae7457c51fa9452f8942f4b349e6e40633392db1dd8aa97 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:36:40,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:36:40,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:36:41,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:36:41,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:36:41,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:36:41,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:36:41,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:36:41,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:36:41,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:36:41,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:36:41,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:36:41,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:36:41,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:36:41,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:36:41,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:36:41,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:36:41,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:36:41,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:36:41,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:36:41,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:36:41,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:36:41,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:36:41,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:36:41,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:36:41,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:36:41,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:36:41,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:36:41,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:36:41,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:36:41,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:36:41,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:36:41,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:36:41,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:36:41,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:36:41,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:36:41,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:36:41,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:36:41,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:36:41,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:36:41,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:36:41,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 02:36:41,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:36:41,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:36:41,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:36:41,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:36:41,194 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:36:41,194 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:36:41,194 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:36:41,194 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:36:41,195 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:36:41,195 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:36:41,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:36:41,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:36:41,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:36:41,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:36:41,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:36:41,198 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:36:41,199 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:36:41,199 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:36:41,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:36:41,199 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:36:41,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:36:41,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:36:41,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:36:41,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:36:41,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:36:41,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:36:41,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:36:41,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:36:41,201 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:36:41,202 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:36:41,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:36:41,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:36:41,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:36:41,203 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0d35ad3183ac446cae7457c51fa9452f8942f4b349e6e40633392db1dd8aa97 [2021-11-13 02:36:41,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:36:41,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:36:41,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:36:41,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:36:41,689 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:36:41,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i [2021-11-13 02:36:41,755 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/data/3d960de3d/3b8f547ac77c438aa537f4725e2c5bed/FLAG6f64eca12 [2021-11-13 02:36:42,859 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:36:42,860 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i [2021-11-13 02:36:42,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/data/3d960de3d/3b8f547ac77c438aa537f4725e2c5bed/FLAG6f64eca12 [2021-11-13 02:36:43,170 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/data/3d960de3d/3b8f547ac77c438aa537f4725e2c5bed [2021-11-13 02:36:43,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:36:43,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:36:43,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:36:43,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:36:43,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:36:43,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:36:43" (1/1) ... [2021-11-13 02:36:43,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7dc3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:43, skipping insertion in model container [2021-11-13 02:36:43,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:36:43" (1/1) ... [2021-11-13 02:36:43,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:36:43,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:36:47,826 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385539,385552] [2021-11-13 02:36:47,830 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385684,385697] [2021-11-13 02:36:47,831 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385830,385843] [2021-11-13 02:36:47,832 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385995,386008] [2021-11-13 02:36:47,833 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386153,386166] [2021-11-13 02:36:47,834 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386311,386324] [2021-11-13 02:36:47,835 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386469,386482] [2021-11-13 02:36:47,835 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386629,386642] [2021-11-13 02:36:47,836 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386788,386801] [2021-11-13 02:36:47,836 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386927,386940] [2021-11-13 02:36:47,837 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387069,387082] [2021-11-13 02:36:47,839 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387218,387231] [2021-11-13 02:36:47,839 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387357,387370] [2021-11-13 02:36:47,840 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387512,387525] [2021-11-13 02:36:47,841 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387672,387685] [2021-11-13 02:36:47,842 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387823,387836] [2021-11-13 02:36:47,842 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387974,387987] [2021-11-13 02:36:47,847 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388126,388139] [2021-11-13 02:36:47,849 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388275,388288] [2021-11-13 02:36:47,849 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388423,388436] [2021-11-13 02:36:47,850 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388580,388593] [2021-11-13 02:36:47,851 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388729,388742] [2021-11-13 02:36:47,852 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388885,388898] [2021-11-13 02:36:47,855 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389038,389051] [2021-11-13 02:36:47,856 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389184,389197] [2021-11-13 02:36:47,857 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389327,389340] [2021-11-13 02:36:47,857 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389479,389492] [2021-11-13 02:36:47,858 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389625,389638] [2021-11-13 02:36:47,860 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389770,389783] [2021-11-13 02:36:47,861 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389924,389937] [2021-11-13 02:36:47,862 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390075,390088] [2021-11-13 02:36:47,863 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390230,390243] [2021-11-13 02:36:47,864 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390382,390395] [2021-11-13 02:36:47,865 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390537,390550] [2021-11-13 02:36:47,865 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390701,390714] [2021-11-13 02:36:47,866 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390857,390870] [2021-11-13 02:36:47,867 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391021,391034] [2021-11-13 02:36:47,867 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391163,391176] [2021-11-13 02:36:47,868 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391321,391334] [2021-11-13 02:36:47,869 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391488,391501] [2021-11-13 02:36:47,869 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391647,391660] [2021-11-13 02:36:47,870 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391806,391819] [2021-11-13 02:36:47,870 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391955,391968] [2021-11-13 02:36:47,871 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392102,392115] [2021-11-13 02:36:47,871 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392241,392254] [2021-11-13 02:36:47,872 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392404,392417] [2021-11-13 02:36:47,873 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392570,392583] [2021-11-13 02:36:47,875 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392734,392747] [2021-11-13 02:36:47,876 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392899,392912] [2021-11-13 02:36:47,876 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393064,393077] [2021-11-13 02:36:47,877 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393230,393243] [2021-11-13 02:36:47,877 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393395,393408] [2021-11-13 02:36:47,878 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393562,393575] [2021-11-13 02:36:47,880 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393722,393735] [2021-11-13 02:36:47,882 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393884,393897] [2021-11-13 02:36:47,882 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394043,394056] [2021-11-13 02:36:47,883 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394189,394202] [2021-11-13 02:36:47,884 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394332,394345] [2021-11-13 02:36:47,884 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394476,394489] [2021-11-13 02:36:47,885 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394619,394632] [2021-11-13 02:36:47,886 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394763,394776] [2021-11-13 02:36:47,887 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394904,394917] [2021-11-13 02:36:47,887 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395042,395055] [2021-11-13 02:36:47,888 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395200,395213] [2021-11-13 02:36:47,889 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395359,395372] [2021-11-13 02:36:47,890 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395515,395528] [2021-11-13 02:36:47,891 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395664,395677] [2021-11-13 02:36:47,891 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395816,395829] [2021-11-13 02:36:47,892 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395967,395980] [2021-11-13 02:36:47,892 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396116,396129] [2021-11-13 02:36:47,893 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396268,396281] [2021-11-13 02:36:47,893 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396416,396429] [2021-11-13 02:36:47,894 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396569,396582] [2021-11-13 02:36:47,895 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396720,396733] [2021-11-13 02:36:47,895 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396870,396883] [2021-11-13 02:36:47,896 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397017,397030] [2021-11-13 02:36:47,896 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397168,397181] [2021-11-13 02:36:47,897 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397319,397332] [2021-11-13 02:36:47,897 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397467,397480] [2021-11-13 02:36:47,898 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397633,397646] [2021-11-13 02:36:47,899 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397802,397815] [2021-11-13 02:36:47,899 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397969,397982] [2021-11-13 02:36:47,900 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398137,398150] [2021-11-13 02:36:47,900 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398287,398300] [2021-11-13 02:36:47,901 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398434,398447] [2021-11-13 02:36:47,902 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398595,398608] [2021-11-13 02:36:47,902 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398765,398778] [2021-11-13 02:36:47,903 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398927,398940] [2021-11-13 02:36:47,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:36:48,032 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:36:48,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:36:48,599 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385539,385552] [2021-11-13 02:36:48,601 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385684,385697] [2021-11-13 02:36:48,601 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385830,385843] [2021-11-13 02:36:48,602 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385995,386008] [2021-11-13 02:36:48,603 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386153,386166] [2021-11-13 02:36:48,604 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386311,386324] [2021-11-13 02:36:48,604 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386469,386482] [2021-11-13 02:36:48,605 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386629,386642] [2021-11-13 02:36:48,605 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386788,386801] [2021-11-13 02:36:48,606 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386927,386940] [2021-11-13 02:36:48,606 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387069,387082] [2021-11-13 02:36:48,611 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387218,387231] [2021-11-13 02:36:48,612 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387357,387370] [2021-11-13 02:36:48,612 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387512,387525] [2021-11-13 02:36:48,613 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387672,387685] [2021-11-13 02:36:48,614 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387823,387836] [2021-11-13 02:36:48,614 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387974,387987] [2021-11-13 02:36:48,614 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388126,388139] [2021-11-13 02:36:48,615 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388275,388288] [2021-11-13 02:36:48,615 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388423,388436] [2021-11-13 02:36:48,616 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388580,388593] [2021-11-13 02:36:48,617 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388729,388742] [2021-11-13 02:36:48,618 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388885,388898] [2021-11-13 02:36:48,619 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389038,389051] [2021-11-13 02:36:48,619 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389184,389197] [2021-11-13 02:36:48,620 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389327,389340] [2021-11-13 02:36:48,620 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389479,389492] [2021-11-13 02:36:48,620 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389625,389638] [2021-11-13 02:36:48,621 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389770,389783] [2021-11-13 02:36:48,621 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389924,389937] [2021-11-13 02:36:48,622 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390075,390088] [2021-11-13 02:36:48,623 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390230,390243] [2021-11-13 02:36:48,624 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390382,390395] [2021-11-13 02:36:48,624 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390537,390550] [2021-11-13 02:36:48,625 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390701,390714] [2021-11-13 02:36:48,625 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390857,390870] [2021-11-13 02:36:48,626 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391021,391034] [2021-11-13 02:36:48,627 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391163,391176] [2021-11-13 02:36:48,628 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391321,391334] [2021-11-13 02:36:48,628 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391488,391501] [2021-11-13 02:36:48,629 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391647,391660] [2021-11-13 02:36:48,630 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391806,391819] [2021-11-13 02:36:48,630 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391955,391968] [2021-11-13 02:36:48,631 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392102,392115] [2021-11-13 02:36:48,631 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392241,392254] [2021-11-13 02:36:48,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392404,392417] [2021-11-13 02:36:48,633 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392570,392583] [2021-11-13 02:36:48,633 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392734,392747] [2021-11-13 02:36:48,639 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392899,392912] [2021-11-13 02:36:48,640 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393064,393077] [2021-11-13 02:36:48,640 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393230,393243] [2021-11-13 02:36:48,641 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393395,393408] [2021-11-13 02:36:48,641 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393562,393575] [2021-11-13 02:36:48,642 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393722,393735] [2021-11-13 02:36:48,643 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393884,393897] [2021-11-13 02:36:48,643 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394043,394056] [2021-11-13 02:36:48,644 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394189,394202] [2021-11-13 02:36:48,644 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394332,394345] [2021-11-13 02:36:48,645 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394476,394489] [2021-11-13 02:36:48,647 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394619,394632] [2021-11-13 02:36:48,651 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394763,394776] [2021-11-13 02:36:48,651 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394904,394917] [2021-11-13 02:36:48,652 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395042,395055] [2021-11-13 02:36:48,652 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395200,395213] [2021-11-13 02:36:48,654 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395359,395372] [2021-11-13 02:36:48,655 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395515,395528] [2021-11-13 02:36:48,655 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395664,395677] [2021-11-13 02:36:48,655 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395816,395829] [2021-11-13 02:36:48,656 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395967,395980] [2021-11-13 02:36:48,664 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396116,396129] [2021-11-13 02:36:48,664 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396268,396281] [2021-11-13 02:36:48,665 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396416,396429] [2021-11-13 02:36:48,667 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396569,396582] [2021-11-13 02:36:48,667 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396720,396733] [2021-11-13 02:36:48,668 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396870,396883] [2021-11-13 02:36:48,668 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397017,397030] [2021-11-13 02:36:48,668 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397168,397181] [2021-11-13 02:36:48,669 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397319,397332] [2021-11-13 02:36:48,670 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397467,397480] [2021-11-13 02:36:48,671 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397633,397646] [2021-11-13 02:36:48,672 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397802,397815] [2021-11-13 02:36:48,673 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397969,397982] [2021-11-13 02:36:48,673 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398137,398150] [2021-11-13 02:36:48,674 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398287,398300] [2021-11-13 02:36:48,674 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398434,398447] [2021-11-13 02:36:48,674 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398595,398608] [2021-11-13 02:36:48,675 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398765,398778] [2021-11-13 02:36:48,675 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398927,398940] [2021-11-13 02:36:48,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:36:48,719 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:36:49,215 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385539,385552] [2021-11-13 02:36:49,216 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385684,385697] [2021-11-13 02:36:49,216 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385830,385843] [2021-11-13 02:36:49,216 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[385995,386008] [2021-11-13 02:36:49,218 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386153,386166] [2021-11-13 02:36:49,218 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386311,386324] [2021-11-13 02:36:49,218 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386469,386482] [2021-11-13 02:36:49,219 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386629,386642] [2021-11-13 02:36:49,219 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386788,386801] [2021-11-13 02:36:49,220 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[386927,386940] [2021-11-13 02:36:49,220 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387069,387082] [2021-11-13 02:36:49,220 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387218,387231] [2021-11-13 02:36:49,221 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387357,387370] [2021-11-13 02:36:49,221 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387512,387525] [2021-11-13 02:36:49,221 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387672,387685] [2021-11-13 02:36:49,222 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387823,387836] [2021-11-13 02:36:49,222 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[387974,387987] [2021-11-13 02:36:49,223 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388126,388139] [2021-11-13 02:36:49,223 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388275,388288] [2021-11-13 02:36:49,223 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388423,388436] [2021-11-13 02:36:49,224 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388580,388593] [2021-11-13 02:36:49,224 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388729,388742] [2021-11-13 02:36:49,224 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[388885,388898] [2021-11-13 02:36:49,225 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389038,389051] [2021-11-13 02:36:49,226 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389184,389197] [2021-11-13 02:36:49,226 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389327,389340] [2021-11-13 02:36:49,228 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389479,389492] [2021-11-13 02:36:49,229 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389625,389638] [2021-11-13 02:36:49,229 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389770,389783] [2021-11-13 02:36:49,229 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[389924,389937] [2021-11-13 02:36:49,230 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390075,390088] [2021-11-13 02:36:49,230 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390230,390243] [2021-11-13 02:36:49,230 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390382,390395] [2021-11-13 02:36:49,231 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390537,390550] [2021-11-13 02:36:49,231 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390701,390714] [2021-11-13 02:36:49,232 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[390857,390870] [2021-11-13 02:36:49,232 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391021,391034] [2021-11-13 02:36:49,232 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391163,391176] [2021-11-13 02:36:49,233 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391321,391334] [2021-11-13 02:36:49,233 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391488,391501] [2021-11-13 02:36:49,234 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391647,391660] [2021-11-13 02:36:49,234 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391806,391819] [2021-11-13 02:36:49,235 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[391955,391968] [2021-11-13 02:36:49,235 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392102,392115] [2021-11-13 02:36:49,235 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392241,392254] [2021-11-13 02:36:49,236 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392404,392417] [2021-11-13 02:36:49,236 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392570,392583] [2021-11-13 02:36:49,236 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392734,392747] [2021-11-13 02:36:49,237 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[392899,392912] [2021-11-13 02:36:49,237 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393064,393077] [2021-11-13 02:36:49,238 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393230,393243] [2021-11-13 02:36:49,239 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393395,393408] [2021-11-13 02:36:49,239 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393562,393575] [2021-11-13 02:36:49,239 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393722,393735] [2021-11-13 02:36:49,240 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[393884,393897] [2021-11-13 02:36:49,241 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394043,394056] [2021-11-13 02:36:49,241 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394189,394202] [2021-11-13 02:36:49,242 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394332,394345] [2021-11-13 02:36:49,242 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394476,394489] [2021-11-13 02:36:49,242 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394619,394632] [2021-11-13 02:36:49,243 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394763,394776] [2021-11-13 02:36:49,243 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[394904,394917] [2021-11-13 02:36:49,244 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395042,395055] [2021-11-13 02:36:49,245 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395200,395213] [2021-11-13 02:36:49,245 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395359,395372] [2021-11-13 02:36:49,245 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395515,395528] [2021-11-13 02:36:49,246 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395664,395677] [2021-11-13 02:36:49,246 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395816,395829] [2021-11-13 02:36:49,247 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[395967,395980] [2021-11-13 02:36:49,247 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396116,396129] [2021-11-13 02:36:49,247 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396268,396281] [2021-11-13 02:36:49,248 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396416,396429] [2021-11-13 02:36:49,248 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396569,396582] [2021-11-13 02:36:49,249 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396720,396733] [2021-11-13 02:36:49,249 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[396870,396883] [2021-11-13 02:36:49,250 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397017,397030] [2021-11-13 02:36:49,250 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397168,397181] [2021-11-13 02:36:49,251 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397319,397332] [2021-11-13 02:36:49,251 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397467,397480] [2021-11-13 02:36:49,253 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397633,397646] [2021-11-13 02:36:49,260 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397802,397815] [2021-11-13 02:36:49,260 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[397969,397982] [2021-11-13 02:36:49,261 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398137,398150] [2021-11-13 02:36:49,261 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398287,398300] [2021-11-13 02:36:49,262 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398434,398447] [2021-11-13 02:36:49,262 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398595,398608] [2021-11-13 02:36:49,262 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398765,398778] [2021-11-13 02:36:49,263 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i[398927,398940] [2021-11-13 02:36:49,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:36:49,605 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:36:49,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:49 WrapperNode [2021-11-13 02:36:49,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:36:49,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:36:49,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:36:49,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:36:49,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:49" (1/1) ... [2021-11-13 02:36:49,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:49" (1/1) ... [2021-11-13 02:36:50,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:36:50,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:36:50,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:36:50,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:36:50,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:49" (1/1) ... [2021-11-13 02:36:50,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:49" (1/1) ... [2021-11-13 02:36:50,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:49" (1/1) ... [2021-11-13 02:36:50,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:49" (1/1) ... [2021-11-13 02:36:50,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:49" (1/1) ... [2021-11-13 02:36:50,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:49" (1/1) ... [2021-11-13 02:36:50,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:49" (1/1) ... [2021-11-13 02:36:50,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:36:50,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:36:50,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:36:50,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:36:50,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:49" (1/1) ... [2021-11-13 02:36:50,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:36:50,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:36:50,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:36:50,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:36:50,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2021-11-13 02:36:50,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2021-11-13 02:36:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 02:36:50,737 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 02:36:50,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 02:36:50,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 02:36:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_device_lock_of_kaweth_device [2021-11-13 02:36:50,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_device_lock_of_kaweth_device [2021-11-13 02:36:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-13 02:36:50,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-13 02:36:50,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_usb_alloc_coherent [2021-11-13 02:36:50,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_usb_alloc_coherent [2021-11-13 02:36:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-13 02:36:50,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-13 02:36:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_open [2021-11-13 02:36:50,739 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_open [2021-11-13 02:36:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2021-11-13 02:36:50,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2021-11-13 02:36:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2021-11-13 02:36:50,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2021-11-13 02:36:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 02:36:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_resume [2021-11-13 02:36:50,740 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_resume [2021-11-13 02:36:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 02:36:50,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-13 02:36:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 02:36:50,741 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 02:36:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 02:36:50,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 02:36:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2021-11-13 02:36:50,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2021-11-13 02:36:50,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:36:50,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 02:36:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:36:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 02:36:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 02:36:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2021-11-13 02:36:50,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2021-11-13 02:36:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 02:36:50,744 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 02:36:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_resubmit_rx_urb [2021-11-13 02:36:50,744 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_resubmit_rx_urb [2021-11-13 02:36:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2021-11-13 02:36:50,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2021-11-13 02:36:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-13 02:36:50,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-13 02:36:50,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-13 02:36:50,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-13 02:36:50,745 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2021-11-13 02:36:50,745 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2021-11-13 02:36:50,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2021-11-13 02:36:50,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2021-11-13 02:36:50,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-13 02:36:50,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-13 02:36:50,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 02:36:50,746 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 02:36:50,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2021-11-13 02:36:50,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2021-11-13 02:36:50,747 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-13 02:36:50,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-13 02:36:50,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 02:36:50,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 02:36:50,747 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_close [2021-11-13 02:36:50,748 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_close [2021-11-13 02:36:50,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2021-11-13 02:36:50,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2021-11-13 02:36:50,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_129 [2021-11-13 02:36:50,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_129 [2021-11-13 02:36:50,748 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_download_firmware [2021-11-13 02:36:50,749 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_download_firmware [2021-11-13 02:36:50,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-13 02:36:50,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-13 02:36:50,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:36:50,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 02:36:50,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 02:36:50,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:36:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 02:36:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 02:36:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 02:36:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 02:36:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_irq_check_alloc_flags [2021-11-13 02:36:50,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_irq_check_alloc_flags [2021-11-13 02:36:50,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2021-11-13 02:36:50,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2021-11-13 02:36:50,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-13 02:36:50,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-13 02:36:50,751 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-13 02:36:50,751 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-13 02:36:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-13 02:36:50,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-13 02:36:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 02:36:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_tx_timeout [2021-11-13 02:36:50,752 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_tx_timeout [2021-11-13 02:36:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:36:50,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:36:50,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:36:50,753 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-13 02:36:50,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-13 02:36:50,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 02:36:50,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:36:50,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 02:36:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 02:36:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 02:36:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 02:36:50,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 02:36:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-13 02:36:50,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-13 02:36:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_133 [2021-11-13 02:36:50,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_133 [2021-11-13 02:36:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-13 02:36:50,757 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-13 02:36:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_async_set_rx_mode [2021-11-13 02:36:50,758 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_async_set_rx_mode [2021-11-13 02:36:50,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_device_lock_of_kaweth_device [2021-11-13 02:36:50,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_device_lock_of_kaweth_device [2021-11-13 02:36:50,758 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 02:36:50,758 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 02:36:50,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2021-11-13 02:36:50,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2021-11-13 02:36:50,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_free_urb [2021-11-13 02:36:50,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_free_urb [2021-11-13 02:36:50,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2021-11-13 02:36:50,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2021-11-13 02:36:50,760 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-13 02:36:50,760 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-13 02:36:50,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:36:50,761 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 02:36:50,761 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 02:36:50,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-13 02:36:50,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-13 02:36:50,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:36:50,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_usb_free_coherent [2021-11-13 02:36:50,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_usb_free_coherent [2021-11-13 02:36:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 02:36:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 02:36:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 02:36:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:36:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 02:36:50,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-13 02:36:50,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-13 02:36:50,763 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 02:36:50,763 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 02:36:50,763 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-13 02:36:50,763 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-13 02:36:50,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-13 02:36:50,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-13 02:36:50,763 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-13 02:36:50,764 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-13 02:36:50,764 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-13 02:36:50,764 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-13 02:36:50,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2021-11-13 02:36:50,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2021-11-13 02:36:50,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_alloc_urb [2021-11-13 02:36:50,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_alloc_urb [2021-11-13 02:36:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-13 02:36:50,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-13 02:36:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2021-11-13 02:36:50,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2021-11-13 02:36:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 02:36:50,766 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 02:36:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_set_rx_mode [2021-11-13 02:36:50,766 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_set_rx_mode [2021-11-13 02:36:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2021-11-13 02:36:50,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2021-11-13 02:36:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-13 02:36:50,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-13 02:36:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 02:36:50,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 02:36:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-13 02:36:50,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-13 02:36:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-13 02:36:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-13 02:36:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 02:36:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 02:36:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 02:36:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 02:36:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 02:36:50,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 02:36:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-13 02:36:50,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-13 02:36:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_resubmit_int_urb [2021-11-13 02:36:50,769 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_resubmit_int_urb [2021-11-13 02:36:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_control [2021-11-13 02:36:50,769 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_control [2021-11-13 02:36:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 02:36:50,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 02:36:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-13 02:36:50,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-13 02:36:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-13 02:36:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_kill_urbs [2021-11-13 02:36:50,771 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_kill_urbs [2021-11-13 02:36:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_disconnect [2021-11-13 02:36:50,771 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_disconnect [2021-11-13 02:36:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-13 02:36:50,771 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-13 02:36:53,173 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 02:37:36,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:37:36,250 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 02:37:36,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:36 BoogieIcfgContainer [2021-11-13 02:37:36,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:37:36,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:37:36,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:37:36,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:37:36,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:36:43" (1/3) ... [2021-11-13 02:37:36,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c600bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:37:36, skipping insertion in model container [2021-11-13 02:37:36,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:36:49" (2/3) ... [2021-11-13 02:37:36,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c600bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:37:36, skipping insertion in model container [2021-11-13 02:37:36,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:36" (3/3) ... [2021-11-13 02:37:36,263 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--net--usb--kaweth.ko.cil.i [2021-11-13 02:37:36,269 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:37:36,269 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-13 02:37:36,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:37:36,359 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 [2021-11-13 02:37:36,360 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-13 02:37:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 1202 states, 791 states have (on average 1.2414664981036663) internal successors, (982), 831 states have internal predecessors, (982), 301 states have call successors, (301), 81 states have call predecessors, (301), 80 states have return successors, (297), 296 states have call predecessors, (297), 297 states have call successors, (297) [2021-11-13 02:37:36,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 02:37:36,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:36,420 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:36,420 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:37:36,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:36,426 INFO L85 PathProgramCache]: Analyzing trace with hash 385353035, now seen corresponding path program 1 times [2021-11-13 02:37:36,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:36,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826291884] [2021-11-13 02:37:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:36,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:36,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:36,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:36,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:37:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:42,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:37:42,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-13 02:37:43,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 02:37:43,709 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:43,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826291884] [2021-11-13 02:37:43,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826291884] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:37:43,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:37:43,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-13 02:37:43,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321821540] [2021-11-13 02:37:43,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:43,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:37:43,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:43,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:37:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:37:43,766 INFO L87 Difference]: Start difference. First operand has 1202 states, 791 states have (on average 1.2414664981036663) internal successors, (982), 831 states have internal predecessors, (982), 301 states have call successors, (301), 81 states have call predecessors, (301), 80 states have return successors, (297), 296 states have call predecessors, (297), 297 states have call successors, (297) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 02:37:45,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:45,918 INFO L93 Difference]: Finished difference Result 2914 states and 4172 transitions. [2021-11-13 02:37:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:37:45,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 71 [2021-11-13 02:37:45,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:45,970 INFO L225 Difference]: With dead ends: 2914 [2021-11-13 02:37:45,970 INFO L226 Difference]: Without dead ends: 1788 [2021-11-13 02:37:45,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:45,998 INFO L933 BasicCegarLoop]: 2117 mSDtfsCounter, 1018 mSDsluCounter, 7104 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1405.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 9221 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 63.98ms SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1685.52ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:45,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1204 Valid, 9221 Invalid, 634 Unknown, 0 Unchecked, 63.98ms Time], IncrementalHoareTripleChecker [378 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1685.52ms Time] [2021-11-13 02:37:46,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2021-11-13 02:37:46,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1189. [2021-11-13 02:37:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 783 states have (on average 1.1966794380587484) internal successors, (937), 820 states have internal predecessors, (937), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:37:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1531 transitions. [2021-11-13 02:37:46,205 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1531 transitions. Word has length 71 [2021-11-13 02:37:46,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:46,206 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1531 transitions. [2021-11-13 02:37:46,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 02:37:46,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1531 transitions. [2021-11-13 02:37:46,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 02:37:46,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:46,211 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:46,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:46,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:46,412 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:37:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:46,413 INFO L85 PathProgramCache]: Analyzing trace with hash 344678285, now seen corresponding path program 1 times [2021-11-13 02:37:46,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:46,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013391728] [2021-11-13 02:37:46,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:46,423 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:46,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:46,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:46,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:37:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:52,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:37:52,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:37:52,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:37:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:37:53,264 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:37:53,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013391728] [2021-11-13 02:37:53,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013391728] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:53,264 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:53,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:37:53,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189984825] [2021-11-13 02:37:53,265 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:53,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:37:53,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:37:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:37:53,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:37:53,268 INFO L87 Difference]: Start difference. First operand 1189 states and 1531 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 02:37:53,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:53,409 INFO L93 Difference]: Finished difference Result 1189 states and 1531 transitions. [2021-11-13 02:37:53,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:37:53,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 71 [2021-11-13 02:37:53,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:53,422 INFO L225 Difference]: With dead ends: 1189 [2021-11-13 02:37:53,422 INFO L226 Difference]: Without dead ends: 1187 [2021-11-13 02:37:53,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:37:53,425 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 1473 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.76ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:53,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 3042 Invalid, 2 Unknown, 0 Unchecked, 14.59ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 9.76ms Time] [2021-11-13 02:37:53,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-11-13 02:37:53,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1187. [2021-11-13 02:37:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 782 states have (on average 1.1956521739130435) internal successors, (935), 818 states have internal predecessors, (935), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:37:53,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1529 transitions. [2021-11-13 02:37:53,511 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1529 transitions. Word has length 71 [2021-11-13 02:37:53,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:53,512 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 1529 transitions. [2021-11-13 02:37:53,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 02:37:53,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1529 transitions. [2021-11-13 02:37:53,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 02:37:53,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:53,520 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:53,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:37:53,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:37:53,721 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:37:53,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:53,721 INFO L85 PathProgramCache]: Analyzing trace with hash -653152447, now seen corresponding path program 1 times [2021-11-13 02:37:53,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:37:53,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991204805] [2021-11-13 02:37:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:53,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:37:53,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:37:53,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:37:53,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:37:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:59,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:37:59,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:37:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:37:59,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:00,358 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:00,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991204805] [2021-11-13 02:38:00,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991204805] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:00,358 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:00,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:38:00,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383851051] [2021-11-13 02:38:00,359 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:00,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:00,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:00,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:00,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:00,360 INFO L87 Difference]: Start difference. First operand 1187 states and 1529 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-13 02:38:00,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:00,498 INFO L93 Difference]: Finished difference Result 1187 states and 1529 transitions. [2021-11-13 02:38:00,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:00,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 77 [2021-11-13 02:38:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:00,511 INFO L225 Difference]: With dead ends: 1187 [2021-11-13 02:38:00,512 INFO L226 Difference]: Without dead ends: 1185 [2021-11-13 02:38:00,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:00,516 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 1462 mSDsluCounter, 3036 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 4556 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.76ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:00,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 4556 Invalid, 2 Unknown, 0 Unchecked, 15.31ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 7.76ms Time] [2021-11-13 02:38:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2021-11-13 02:38:00,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2021-11-13 02:38:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 781 states have (on average 1.1946222791293213) internal successors, (933), 816 states have internal predecessors, (933), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:38:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1527 transitions. [2021-11-13 02:38:00,628 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1527 transitions. Word has length 77 [2021-11-13 02:38:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:00,628 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1527 transitions. [2021-11-13 02:38:00,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-13 02:38:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1527 transitions. [2021-11-13 02:38:00,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 02:38:00,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:00,631 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:00,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:00,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:00,846 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:38:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:00,847 INFO L85 PathProgramCache]: Analyzing trace with hash 342503834, now seen corresponding path program 1 times [2021-11-13 02:38:00,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:00,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90529399] [2021-11-13 02:38:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:00,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:00,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:00,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:00,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:38:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:06,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2512 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:38:06,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:07,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:07,749 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:07,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90529399] [2021-11-13 02:38:07,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90529399] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:07,749 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:07,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:38:07,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349887374] [2021-11-13 02:38:07,749 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:07,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:07,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:07,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:07,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:07,752 INFO L87 Difference]: Start difference. First operand 1185 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 02:38:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:07,894 INFO L93 Difference]: Finished difference Result 1185 states and 1527 transitions. [2021-11-13 02:38:07,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:07,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 83 [2021-11-13 02:38:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:07,910 INFO L225 Difference]: With dead ends: 1185 [2021-11-13 02:38:07,910 INFO L226 Difference]: Without dead ends: 1183 [2021-11-13 02:38:07,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:07,914 INFO L933 BasicCegarLoop]: 1518 mSDtfsCounter, 1454 mSDsluCounter, 3032 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 4550 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.36ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.74ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:07,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1456 Valid, 4550 Invalid, 2 Unknown, 0 Unchecked, 15.36ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 7.74ms Time] [2021-11-13 02:38:07,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-11-13 02:38:07,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2021-11-13 02:38:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 780 states have (on average 1.1935897435897436) internal successors, (931), 814 states have internal predecessors, (931), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:38:08,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1525 transitions. [2021-11-13 02:38:08,000 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1525 transitions. Word has length 83 [2021-11-13 02:38:08,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:08,002 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1525 transitions. [2021-11-13 02:38:08,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 02:38:08,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1525 transitions. [2021-11-13 02:38:08,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-13 02:38:08,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:08,004 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:08,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:08,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:08,217 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:38:08,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:08,218 INFO L85 PathProgramCache]: Analyzing trace with hash -856665656, now seen corresponding path program 1 times [2021-11-13 02:38:08,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:08,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475208207] [2021-11-13 02:38:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:08,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:08,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:08,224 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:08,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:38:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:13,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:38:13,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:14,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:15,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:15,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475208207] [2021-11-13 02:38:15,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475208207] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:15,003 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:15,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:38:15,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874946700] [2021-11-13 02:38:15,004 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:15,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:15,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:15,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:15,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:15,006 INFO L87 Difference]: Start difference. First operand 1183 states and 1525 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 02:38:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:15,127 INFO L93 Difference]: Finished difference Result 1183 states and 1525 transitions. [2021-11-13 02:38:15,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:15,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 89 [2021-11-13 02:38:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:15,137 INFO L225 Difference]: With dead ends: 1183 [2021-11-13 02:38:15,137 INFO L226 Difference]: Without dead ends: 1181 [2021-11-13 02:38:15,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:15,139 INFO L933 BasicCegarLoop]: 1516 mSDtfsCounter, 1449 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.70ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.53ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:15,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 3030 Invalid, 2 Unknown, 0 Unchecked, 9.70ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 7.53ms Time] [2021-11-13 02:38:15,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-11-13 02:38:15,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2021-11-13 02:38:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 779 states have (on average 1.1925545571245186) internal successors, (929), 812 states have internal predecessors, (929), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:38:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1523 transitions. [2021-11-13 02:38:15,223 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1523 transitions. Word has length 89 [2021-11-13 02:38:15,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:15,223 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1523 transitions. [2021-11-13 02:38:15,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 02:38:15,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1523 transitions. [2021-11-13 02:38:15,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:38:15,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:15,226 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:15,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:15,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:15,450 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:38:15,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:15,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1085719422, now seen corresponding path program 1 times [2021-11-13 02:38:15,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:15,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894620114] [2021-11-13 02:38:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:15,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:15,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:15,458 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:15,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:38:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:21,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:38:21,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:21,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:22,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:22,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894620114] [2021-11-13 02:38:22,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894620114] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:22,189 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:22,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:38:22,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632137910] [2021-11-13 02:38:22,190 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:22,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:22,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:22,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:22,191 INFO L87 Difference]: Start difference. First operand 1181 states and 1523 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 02:38:22,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:22,328 INFO L93 Difference]: Finished difference Result 1181 states and 1523 transitions. [2021-11-13 02:38:22,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:22,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 95 [2021-11-13 02:38:22,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:22,339 INFO L225 Difference]: With dead ends: 1181 [2021-11-13 02:38:22,339 INFO L226 Difference]: Without dead ends: 1179 [2021-11-13 02:38:22,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:22,341 INFO L933 BasicCegarLoop]: 1514 mSDtfsCounter, 1438 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 4538 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.61ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:22,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 4538 Invalid, 2 Unknown, 0 Unchecked, 13.57ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 7.61ms Time] [2021-11-13 02:38:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-11-13 02:38:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2021-11-13 02:38:22,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 778 states have (on average 1.1915167095115682) internal successors, (927), 810 states have internal predecessors, (927), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:38:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1521 transitions. [2021-11-13 02:38:22,434 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1521 transitions. Word has length 95 [2021-11-13 02:38:22,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:22,436 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1521 transitions. [2021-11-13 02:38:22,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 02:38:22,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1521 transitions. [2021-11-13 02:38:22,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-13 02:38:22,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:22,438 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:22,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-13 02:38:22,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:22,662 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:38:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash 697185118, now seen corresponding path program 1 times [2021-11-13 02:38:22,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:22,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314042290] [2021-11-13 02:38:22,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:22,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:22,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:22,670 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:22,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:38:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:28,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:38:28,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:29,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:29,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:29,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314042290] [2021-11-13 02:38:29,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314042290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:29,559 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:29,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:38:29,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959500926] [2021-11-13 02:38:29,559 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:29,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:29,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:29,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:29,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:29,561 INFO L87 Difference]: Start difference. First operand 1179 states and 1521 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-13 02:38:29,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:29,699 INFO L93 Difference]: Finished difference Result 1179 states and 1521 transitions. [2021-11-13 02:38:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:29,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 101 [2021-11-13 02:38:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:29,708 INFO L225 Difference]: With dead ends: 1179 [2021-11-13 02:38:29,708 INFO L226 Difference]: Without dead ends: 1177 [2021-11-13 02:38:29,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:29,710 INFO L933 BasicCegarLoop]: 1512 mSDtfsCounter, 1430 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 4532 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.46ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:29,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1432 Valid, 4532 Invalid, 2 Unknown, 0 Unchecked, 12.94ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 7.46ms Time] [2021-11-13 02:38:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-11-13 02:38:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1177. [2021-11-13 02:38:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 777 states have (on average 1.1904761904761905) internal successors, (925), 808 states have internal predecessors, (925), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:38:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1519 transitions. [2021-11-13 02:38:29,806 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1519 transitions. Word has length 101 [2021-11-13 02:38:29,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:29,808 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1519 transitions. [2021-11-13 02:38:29,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-13 02:38:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1519 transitions. [2021-11-13 02:38:29,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 02:38:29,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:29,810 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:29,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:30,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:30,036 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:38:30,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1172007804, now seen corresponding path program 1 times [2021-11-13 02:38:30,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:30,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836431044] [2021-11-13 02:38:30,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:30,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:30,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:30,044 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:30,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:38:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:35,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:38:35,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:36,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:36,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:36,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836431044] [2021-11-13 02:38:36,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836431044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:36,935 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:36,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:38:36,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638809959] [2021-11-13 02:38:36,935 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:36,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:36,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:36,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:36,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:36,937 INFO L87 Difference]: Start difference. First operand 1177 states and 1519 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 02:38:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:37,070 INFO L93 Difference]: Finished difference Result 1177 states and 1519 transitions. [2021-11-13 02:38:37,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:37,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 107 [2021-11-13 02:38:37,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:37,080 INFO L225 Difference]: With dead ends: 1177 [2021-11-13 02:38:37,080 INFO L226 Difference]: Without dead ends: 1175 [2021-11-13 02:38:37,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:37,082 INFO L933 BasicCegarLoop]: 1510 mSDtfsCounter, 1422 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 4526 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.07ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:37,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1424 Valid, 4526 Invalid, 2 Unknown, 0 Unchecked, 10.86ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 8.07ms Time] [2021-11-13 02:38:37,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2021-11-13 02:38:37,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2021-11-13 02:38:37,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 776 states have (on average 1.1894329896907216) internal successors, (923), 806 states have internal predecessors, (923), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:38:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1517 transitions. [2021-11-13 02:38:37,215 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1517 transitions. Word has length 107 [2021-11-13 02:38:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:37,215 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 1517 transitions. [2021-11-13 02:38:37,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 02:38:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1517 transitions. [2021-11-13 02:38:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 02:38:37,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:37,221 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:37,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:37,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:37,445 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:38:37,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:37,446 INFO L85 PathProgramCache]: Analyzing trace with hash -412931297, now seen corresponding path program 1 times [2021-11-13 02:38:37,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:37,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324563169] [2021-11-13 02:38:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:37,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:37,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:37,451 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:37,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:38:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:42,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 2557 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:38:42,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:43,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:44,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:44,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324563169] [2021-11-13 02:38:44,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324563169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:44,291 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:44,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:38:44,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010242730] [2021-11-13 02:38:44,292 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:44,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:44,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:44,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:44,293 INFO L87 Difference]: Start difference. First operand 1175 states and 1517 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 02:38:44,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:44,435 INFO L93 Difference]: Finished difference Result 1175 states and 1517 transitions. [2021-11-13 02:38:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:44,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 113 [2021-11-13 02:38:44,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:44,445 INFO L225 Difference]: With dead ends: 1175 [2021-11-13 02:38:44,445 INFO L226 Difference]: Without dead ends: 1173 [2021-11-13 02:38:44,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:44,449 INFO L933 BasicCegarLoop]: 1508 mSDtfsCounter, 1418 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 4512 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.67ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:44,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1420 Valid, 4512 Invalid, 2 Unknown, 0 Unchecked, 11.55ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 7.67ms Time] [2021-11-13 02:38:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-13 02:38:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2021-11-13 02:38:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 775 states have (on average 1.1883870967741936) internal successors, (921), 804 states have internal predecessors, (921), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:38:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1515 transitions. [2021-11-13 02:38:44,541 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1515 transitions. Word has length 113 [2021-11-13 02:38:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:44,542 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1515 transitions. [2021-11-13 02:38:44,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 02:38:44,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1515 transitions. [2021-11-13 02:38:44,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-13 02:38:44,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:44,545 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:44,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:44,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:44,763 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:38:44,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:44,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1689851646, now seen corresponding path program 1 times [2021-11-13 02:38:44,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:44,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818737346] [2021-11-13 02:38:44,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:44,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:44,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:44,769 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:44,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:38:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:50,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:38:50,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:51,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:51,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:51,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818737346] [2021-11-13 02:38:51,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818737346] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:51,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:51,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:38:51,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248703535] [2021-11-13 02:38:51,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:51,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:51,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:51,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:51,555 INFO L87 Difference]: Start difference. First operand 1173 states and 1515 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 02:38:51,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:51,701 INFO L93 Difference]: Finished difference Result 1173 states and 1515 transitions. [2021-11-13 02:38:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:51,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 115 [2021-11-13 02:38:51,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:51,711 INFO L225 Difference]: With dead ends: 1173 [2021-11-13 02:38:51,711 INFO L226 Difference]: Without dead ends: 1171 [2021-11-13 02:38:51,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:51,713 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 1413 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 3010 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.73ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:51,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1415 Valid, 3010 Invalid, 2 Unknown, 0 Unchecked, 8.64ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 7.73ms Time] [2021-11-13 02:38:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-11-13 02:38:51,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1171. [2021-11-13 02:38:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 774 states have (on average 1.1873385012919897) internal successors, (919), 802 states have internal predecessors, (919), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:38:51,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1513 transitions. [2021-11-13 02:38:51,813 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1513 transitions. Word has length 115 [2021-11-13 02:38:51,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:51,814 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 1513 transitions. [2021-11-13 02:38:51,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 02:38:51,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1513 transitions. [2021-11-13 02:38:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 02:38:51,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:51,817 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:51,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:52,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:52,018 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_linux_kernel_module_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:38:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:52,019 INFO L85 PathProgramCache]: Analyzing trace with hash -840109970, now seen corresponding path program 1 times [2021-11-13 02:38:52,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:52,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733899988] [2021-11-13 02:38:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:52,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:52,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:52,027 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:52,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:38:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:57,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:38:57,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:58,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:38:59,040 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:59,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733899988] [2021-11-13 02:38:59,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733899988] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:59,041 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:59,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:38:59,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487137507] [2021-11-13 02:38:59,041 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:59,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:38:59,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:59,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:38:59,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:38:59,043 INFO L87 Difference]: Start difference. First operand 1171 states and 1513 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-13 02:38:59,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:59,187 INFO L93 Difference]: Finished difference Result 1171 states and 1513 transitions. [2021-11-13 02:38:59,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:59,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 121 [2021-11-13 02:38:59,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:59,197 INFO L225 Difference]: With dead ends: 1171 [2021-11-13 02:38:59,197 INFO L226 Difference]: Without dead ends: 1169 [2021-11-13 02:38:59,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:59,199 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 1402 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 4508 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.35ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:59,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1404 Valid, 4508 Invalid, 2 Unknown, 0 Unchecked, 10.55ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 7.35ms Time] [2021-11-13 02:38:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2021-11-13 02:38:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2021-11-13 02:38:59,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 773 states have (on average 1.186287192755498) internal successors, (917), 800 states have internal predecessors, (917), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:38:59,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1511 transitions. [2021-11-13 02:38:59,310 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1511 transitions. Word has length 121 [2021-11-13 02:38:59,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:59,312 INFO L470 AbstractCegarLoop]: Abstraction has 1169 states and 1511 transitions. [2021-11-13 02:38:59,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-13 02:38:59,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1511 transitions. [2021-11-13 02:38:59,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-13 02:38:59,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:59,315 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:59,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:59,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:59,534 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_linux_kernel_rcu_update_lock_bh_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:38:59,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1637311748, now seen corresponding path program 1 times [2021-11-13 02:38:59,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:59,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288905044] [2021-11-13 02:38:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:59,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:59,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:59,542 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:59,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 02:39:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:05,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:39:05,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:39:05,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:06,435 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:39:06,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:06,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288905044] [2021-11-13 02:39:06,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288905044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:06,436 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:06,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:39:06,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134815233] [2021-11-13 02:39:06,436 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:06,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:06,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:06,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:06,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:06,438 INFO L87 Difference]: Start difference. First operand 1169 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-13 02:39:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:06,575 INFO L93 Difference]: Finished difference Result 1169 states and 1511 transitions. [2021-11-13 02:39:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:39:06,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 127 [2021-11-13 02:39:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:06,585 INFO L225 Difference]: With dead ends: 1169 [2021-11-13 02:39:06,585 INFO L226 Difference]: Without dead ends: 1167 [2021-11-13 02:39:06,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:06,587 INFO L933 BasicCegarLoop]: 1502 mSDtfsCounter, 1394 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 4502 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.82ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:06,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1396 Valid, 4502 Invalid, 2 Unknown, 0 Unchecked, 9.47ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 5.82ms Time] [2021-11-13 02:39:06,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2021-11-13 02:39:06,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1167. [2021-11-13 02:39:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 772 states have (on average 1.1852331606217616) internal successors, (915), 798 states have internal predecessors, (915), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:39:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1509 transitions. [2021-11-13 02:39:06,707 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1509 transitions. Word has length 127 [2021-11-13 02:39:06,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:06,707 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 1509 transitions. [2021-11-13 02:39:06,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-13 02:39:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1509 transitions. [2021-11-13 02:39:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-13 02:39:06,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:06,710 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:06,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:06,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:06,934 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_linux_kernel_rcu_update_lock_sched_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:39:06,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:06,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1635450853, now seen corresponding path program 1 times [2021-11-13 02:39:06,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:06,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640499694] [2021-11-13 02:39:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:06,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:06,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:06,939 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:06,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 02:39:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:12,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 2587 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:39:12,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:39:13,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:39:13,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:13,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640499694] [2021-11-13 02:39:13,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640499694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:13,961 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:13,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:39:13,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966997926] [2021-11-13 02:39:13,961 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:13,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:13,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:13,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:13,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:13,975 INFO L87 Difference]: Start difference. First operand 1167 states and 1509 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-13 02:39:14,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:14,144 INFO L93 Difference]: Finished difference Result 1167 states and 1509 transitions. [2021-11-13 02:39:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:39:14,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 133 [2021-11-13 02:39:14,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:14,154 INFO L225 Difference]: With dead ends: 1167 [2021-11-13 02:39:14,155 INFO L226 Difference]: Without dead ends: 1165 [2021-11-13 02:39:14,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:14,157 INFO L933 BasicCegarLoop]: 1500 mSDtfsCounter, 1389 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.65ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:14,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 2998 Invalid, 2 Unknown, 0 Unchecked, 8.13ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 6.65ms Time] [2021-11-13 02:39:14,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-13 02:39:14,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2021-11-13 02:39:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 771 states have (on average 1.1841763942931258) internal successors, (913), 796 states have internal predecessors, (913), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:39:14,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1507 transitions. [2021-11-13 02:39:14,279 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1507 transitions. Word has length 133 [2021-11-13 02:39:14,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:14,280 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1507 transitions. [2021-11-13 02:39:14,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-13 02:39:14,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1507 transitions. [2021-11-13 02:39:14,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-13 02:39:14,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:14,283 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:14,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-13 02:39:14,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:14,504 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:39:14,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash 258160742, now seen corresponding path program 1 times [2021-11-13 02:39:14,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:14,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479146667] [2021-11-13 02:39:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:14,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:14,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:14,509 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:14,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 02:39:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:20,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 2596 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:39:20,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:39:21,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:39:21,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:21,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479146667] [2021-11-13 02:39:21,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479146667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:21,782 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:21,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:39:21,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695634825] [2021-11-13 02:39:21,782 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:21,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:21,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:21,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:21,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:21,784 INFO L87 Difference]: Start difference. First operand 1165 states and 1507 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-13 02:39:21,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:21,940 INFO L93 Difference]: Finished difference Result 1165 states and 1507 transitions. [2021-11-13 02:39:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:39:21,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 139 [2021-11-13 02:39:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:21,950 INFO L225 Difference]: With dead ends: 1165 [2021-11-13 02:39:21,950 INFO L226 Difference]: Without dead ends: 1163 [2021-11-13 02:39:21,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:21,952 INFO L933 BasicCegarLoop]: 1498 mSDtfsCounter, 1381 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.61ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:21,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1383 Valid, 2994 Invalid, 2 Unknown, 0 Unchecked, 7.45ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 6.61ms Time] [2021-11-13 02:39:21,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-11-13 02:39:22,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2021-11-13 02:39:22,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 770 states have (on average 1.183116883116883) internal successors, (911), 794 states have internal predecessors, (911), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:39:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1505 transitions. [2021-11-13 02:39:22,110 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1505 transitions. Word has length 139 [2021-11-13 02:39:22,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:22,113 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1505 transitions. [2021-11-13 02:39:22,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-13 02:39:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1505 transitions. [2021-11-13 02:39:22,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-13 02:39:22,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:22,123 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:22,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:22,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:22,338 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_linux_kernel_rcu_srcu_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:39:22,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:22,339 INFO L85 PathProgramCache]: Analyzing trace with hash 968451310, now seen corresponding path program 1 times [2021-11-13 02:39:22,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:22,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599833709] [2021-11-13 02:39:22,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:22,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:22,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:22,347 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:22,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 02:39:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:28,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 2605 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:39:28,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:39:29,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:39:29,699 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:29,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599833709] [2021-11-13 02:39:29,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599833709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:29,699 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:29,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:39:29,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107721073] [2021-11-13 02:39:29,699 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:29,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:29,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:29,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:29,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:29,701 INFO L87 Difference]: Start difference. First operand 1163 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-13 02:39:29,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:29,880 INFO L93 Difference]: Finished difference Result 1163 states and 1505 transitions. [2021-11-13 02:39:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:39:29,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 145 [2021-11-13 02:39:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:29,890 INFO L225 Difference]: With dead ends: 1163 [2021-11-13 02:39:29,890 INFO L226 Difference]: Without dead ends: 1161 [2021-11-13 02:39:29,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:29,894 INFO L933 BasicCegarLoop]: 1496 mSDtfsCounter, 1370 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 4484 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.68ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:29,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1372 Valid, 4484 Invalid, 2 Unknown, 0 Unchecked, 9.91ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 7.68ms Time] [2021-11-13 02:39:29,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-11-13 02:39:30,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1161. [2021-11-13 02:39:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 769 states have (on average 1.1820546163849155) internal successors, (909), 792 states have internal predecessors, (909), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:39:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1503 transitions. [2021-11-13 02:39:30,015 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1503 transitions. Word has length 145 [2021-11-13 02:39:30,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:30,016 INFO L470 AbstractCegarLoop]: Abstraction has 1161 states and 1503 transitions. [2021-11-13 02:39:30,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-11-13 02:39:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1503 transitions. [2021-11-13 02:39:30,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-13 02:39:30,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:30,020 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:30,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:30,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:30,243 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_linux_lib_idr_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:39:30,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1527407926, now seen corresponding path program 1 times [2021-11-13 02:39:30,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:30,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23494020] [2021-11-13 02:39:30,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:30,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:30,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:30,248 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:30,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 02:39:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:36,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 2614 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:39:36,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:37,076 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:39:37,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:39:38,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:38,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23494020] [2021-11-13 02:39:38,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23494020] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:38,024 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:38,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-13 02:39:38,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123510541] [2021-11-13 02:39:38,024 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:38,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:39:38,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:38,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:39:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:38,026 INFO L87 Difference]: Start difference. First operand 1161 states and 1503 transitions. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 3 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-13 02:39:39,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:39,006 INFO L93 Difference]: Finished difference Result 1161 states and 1503 transitions. [2021-11-13 02:39:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:39:39,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 3 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 151 [2021-11-13 02:39:39,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:39,014 INFO L225 Difference]: With dead ends: 1161 [2021-11-13 02:39:39,015 INFO L226 Difference]: Without dead ends: 1159 [2021-11-13 02:39:39,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:39:39,016 INFO L933 BasicCegarLoop]: 1494 mSDtfsCounter, 2244 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 634.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 4478 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.03ms SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 826.64ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:39,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2246 Valid, 4478 Invalid, 571 Unknown, 0 Unchecked, 13.03ms Time], IncrementalHoareTripleChecker [569 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 826.64ms Time] [2021-11-13 02:39:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-11-13 02:39:39,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1159. [2021-11-13 02:39:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 768 states have (on average 1.1809895833333333) internal successors, (907), 790 states have internal predecessors, (907), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:39:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1501 transitions. [2021-11-13 02:39:39,141 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1501 transitions. Word has length 151 [2021-11-13 02:39:39,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:39,142 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1501 transitions. [2021-11-13 02:39:39,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 3 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-13 02:39:39,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1501 transitions. [2021-11-13 02:39:39,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-13 02:39:39,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:39,146 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:39,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:39,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:39,347 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:39:39,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1583272458, now seen corresponding path program 1 times [2021-11-13 02:39:39,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:39,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166799900] [2021-11-13 02:39:39,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:39,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:39,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:39,352 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:39,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 02:39:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:45,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 02:39:45,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-11-13 02:39:47,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 9 proven. 52 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2021-11-13 02:39:49,434 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:49,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166799900] [2021-11-13 02:39:49,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166799900] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:39:49,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:39:49,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-13 02:39:49,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808105703] [2021-11-13 02:39:49,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:49,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:39:49,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:49,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:39:49,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-13 02:39:49,436 INFO L87 Difference]: Start difference. First operand 1159 states and 1501 transitions. Second operand has 12 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (23), 6 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-13 02:39:51,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:51,767 INFO L93 Difference]: Finished difference Result 2381 states and 3106 transitions. [2021-11-13 02:39:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 02:39:51,768 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (23), 6 states have call predecessors, (23), 4 states have call successors, (23) Word has length 196 [2021-11-13 02:39:51,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:51,776 INFO L225 Difference]: With dead ends: 2381 [2021-11-13 02:39:51,776 INFO L226 Difference]: Without dead ends: 1247 [2021-11-13 02:39:51,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-11-13 02:39:51,783 INFO L933 BasicCegarLoop]: 1594 mSDtfsCounter, 398 mSDsluCounter, 12127 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1530.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 13721 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.78ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1694.10ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:51,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 13721 Invalid, 408 Unknown, 0 Unchecked, 31.78ms Time], IncrementalHoareTripleChecker [3 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 1694.10ms Time] [2021-11-13 02:39:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-11-13 02:39:51,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1159. [2021-11-13 02:39:51,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 768 states have (on average 1.1796875) internal successors, (906), 789 states have internal predecessors, (906), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:39:51,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1500 transitions. [2021-11-13 02:39:51,976 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1500 transitions. Word has length 196 [2021-11-13 02:39:51,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:51,976 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1500 transitions. [2021-11-13 02:39:51,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (23), 6 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-13 02:39:51,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1500 transitions. [2021-11-13 02:39:51,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-13 02:39:51,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:51,981 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:52,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-13 02:39:52,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:52,202 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:39:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash -79852977, now seen corresponding path program 1 times [2021-11-13 02:39:52,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:52,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511953938] [2021-11-13 02:39:52,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:52,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:52,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:52,209 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:52,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 02:39:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:57,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:39:57,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:39:58,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:39:59,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:59,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511953938] [2021-11-13 02:39:59,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511953938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:59,527 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:59,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:39:59,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973742003] [2021-11-13 02:39:59,527 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:59,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:59,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:59,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:59,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:59,529 INFO L87 Difference]: Start difference. First operand 1159 states and 1500 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-13 02:39:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:59,688 INFO L93 Difference]: Finished difference Result 1159 states and 1500 transitions. [2021-11-13 02:39:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:39:59,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 157 [2021-11-13 02:39:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:59,696 INFO L225 Difference]: With dead ends: 1159 [2021-11-13 02:39:59,696 INFO L226 Difference]: Without dead ends: 1157 [2021-11-13 02:39:59,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 308 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:59,698 INFO L933 BasicCegarLoop]: 1491 mSDtfsCounter, 1356 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.74ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:59,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1358 Valid, 2980 Invalid, 2 Unknown, 0 Unchecked, 6.18ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 5.74ms Time] [2021-11-13 02:39:59,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-13 02:39:59,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2021-11-13 02:39:59,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 767 states have (on average 1.1786179921773141) internal successors, (904), 787 states have internal predecessors, (904), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:39:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1498 transitions. [2021-11-13 02:39:59,833 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1498 transitions. Word has length 157 [2021-11-13 02:39:59,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:59,834 INFO L470 AbstractCegarLoop]: Abstraction has 1157 states and 1498 transitions. [2021-11-13 02:39:59,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-13 02:39:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1498 transitions. [2021-11-13 02:39:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 02:39:59,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:59,836 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:59,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-13 02:40:00,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:00,052 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:40:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:00,052 INFO L85 PathProgramCache]: Analyzing trace with hash -21644979, now seen corresponding path program 1 times [2021-11-13 02:40:00,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:00,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983390222] [2021-11-13 02:40:00,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:00,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:00,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:00,058 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:00,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 02:40:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:06,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 02:40:06,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:08,059 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-13 02:40:08,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 22 proven. 39 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2021-11-13 02:40:10,769 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:10,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983390222] [2021-11-13 02:40:10,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983390222] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:40:10,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:40:10,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-13 02:40:10,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817904497] [2021-11-13 02:40:10,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:10,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:40:10,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:10,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:40:10,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-13 02:40:10,771 INFO L87 Difference]: Start difference. First operand 1157 states and 1498 transitions. Second operand has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 6 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-13 02:40:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:13,137 INFO L93 Difference]: Finished difference Result 2372 states and 3093 transitions. [2021-11-13 02:40:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 02:40:13,137 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 6 states have call predecessors, (27), 4 states have call successors, (27) Word has length 200 [2021-11-13 02:40:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:13,146 INFO L225 Difference]: With dead ends: 2372 [2021-11-13 02:40:13,146 INFO L226 Difference]: Without dead ends: 1245 [2021-11-13 02:40:13,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-11-13 02:40:13,152 INFO L933 BasicCegarLoop]: 1591 mSDtfsCounter, 392 mSDsluCounter, 13698 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1597.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 15289 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.46ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1765.52ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:13,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 15289 Invalid, 444 Unknown, 0 Unchecked, 22.46ms Time], IncrementalHoareTripleChecker [3 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 1765.52ms Time] [2021-11-13 02:40:13,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-11-13 02:40:13,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1157. [2021-11-13 02:40:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 767 states have (on average 1.1773142112125163) internal successors, (903), 786 states have internal predecessors, (903), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:40:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1497 transitions. [2021-11-13 02:40:13,314 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1497 transitions. Word has length 200 [2021-11-13 02:40:13,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:13,315 INFO L470 AbstractCegarLoop]: Abstraction has 1157 states and 1497 transitions. [2021-11-13 02:40:13,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (27), 6 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-13 02:40:13,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1497 transitions. [2021-11-13 02:40:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-13 02:40:13,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:13,317 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:13,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:13,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:13,531 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:40:13,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:13,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1489884183, now seen corresponding path program 1 times [2021-11-13 02:40:13,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:13,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104594870] [2021-11-13 02:40:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:13,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:13,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:13,536 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:13,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 02:40:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:19,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 2632 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:40:19,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:40:20,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:40:20,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:20,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104594870] [2021-11-13 02:40:20,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104594870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:20,815 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:20,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:40:20,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464919420] [2021-11-13 02:40:20,815 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:20,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:40:20,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:20,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:40:20,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:40:20,816 INFO L87 Difference]: Start difference. First operand 1157 states and 1497 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-13 02:40:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:20,962 INFO L93 Difference]: Finished difference Result 1157 states and 1497 transitions. [2021-11-13 02:40:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:20,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 163 [2021-11-13 02:40:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:20,969 INFO L225 Difference]: With dead ends: 1157 [2021-11-13 02:40:20,969 INFO L226 Difference]: Without dead ends: 1155 [2021-11-13 02:40:20,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:20,970 INFO L933 BasicCegarLoop]: 1488 mSDtfsCounter, 1347 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.87ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:20,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1349 Valid, 2974 Invalid, 2 Unknown, 0 Unchecked, 5.11ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 5.87ms Time] [2021-11-13 02:40:20,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2021-11-13 02:40:21,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1155. [2021-11-13 02:40:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 766 states have (on average 1.1762402088772845) internal successors, (901), 784 states have internal predecessors, (901), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:40:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1495 transitions. [2021-11-13 02:40:21,164 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1495 transitions. Word has length 163 [2021-11-13 02:40:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:21,165 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1495 transitions. [2021-11-13 02:40:21,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-13 02:40:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1495 transitions. [2021-11-13 02:40:21,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-13 02:40:21,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:21,168 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:21,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:21,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:21,387 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:40:21,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:21,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2099658134, now seen corresponding path program 1 times [2021-11-13 02:40:21,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:21,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607781946] [2021-11-13 02:40:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:21,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:21,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:21,392 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:21,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 02:40:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:27,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 2977 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:40:27,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2021-11-13 02:40:28,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-13 02:40:29,213 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:29,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607781946] [2021-11-13 02:40:29,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607781946] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:40:29,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:40:29,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-13 02:40:29,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116690547] [2021-11-13 02:40:29,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:29,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:40:29,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:29,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:40:29,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:29,215 INFO L87 Difference]: Start difference. First operand 1155 states and 1495 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-13 02:40:30,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:30,712 INFO L93 Difference]: Finished difference Result 2351 states and 3064 transitions. [2021-11-13 02:40:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:40:30,712 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), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 204 [2021-11-13 02:40:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:30,721 INFO L225 Difference]: With dead ends: 2351 [2021-11-13 02:40:30,721 INFO L226 Difference]: Without dead ends: 1241 [2021-11-13 02:40:30,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:40:30,726 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 375 mSDsluCounter, 5820 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1263.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 7417 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1312.89ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:30,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 7417 Invalid, 163 Unknown, 0 Unchecked, 9.38ms Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 1312.89ms Time] [2021-11-13 02:40:30,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2021-11-13 02:40:30,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1155. [2021-11-13 02:40:30,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 766 states have (on average 1.174934725848564) internal successors, (900), 784 states have internal predecessors, (900), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:40:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1494 transitions. [2021-11-13 02:40:30,893 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1494 transitions. Word has length 204 [2021-11-13 02:40:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:30,893 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1494 transitions. [2021-11-13 02:40:30,894 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), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-13 02:40:30,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1494 transitions. [2021-11-13 02:40:30,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-13 02:40:30,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:30,896 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:30,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:31,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:31,110 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:40:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:31,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1851511640, now seen corresponding path program 1 times [2021-11-13 02:40:31,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:31,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78842630] [2021-11-13 02:40:31,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:31,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:31,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:31,118 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:31,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 02:40:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:37,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 2977 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:40:37,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:38,007 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2021-11-13 02:40:38,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-13 02:40:38,710 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:38,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78842630] [2021-11-13 02:40:38,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78842630] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:40:38,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:40:38,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-13 02:40:38,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842649154] [2021-11-13 02:40:38,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:38,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:40:38,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:38,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:40:38,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:38,712 INFO L87 Difference]: Start difference. First operand 1155 states and 1494 transitions. Second operand has 6 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-13 02:40:40,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:40,114 INFO L93 Difference]: Finished difference Result 2347 states and 3057 transitions. [2021-11-13 02:40:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:40:40,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 204 [2021-11-13 02:40:40,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:40,123 INFO L225 Difference]: With dead ends: 2347 [2021-11-13 02:40:40,124 INFO L226 Difference]: Without dead ends: 1241 [2021-11-13 02:40:40,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:40:40,128 INFO L933 BasicCegarLoop]: 1596 mSDtfsCounter, 371 mSDsluCounter, 5820 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1181.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 7416 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1230.50ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:40,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 7416 Invalid, 164 Unknown, 0 Unchecked, 8.65ms Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1230.50ms Time] [2021-11-13 02:40:40,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2021-11-13 02:40:40,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1155. [2021-11-13 02:40:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 766 states have (on average 1.1736292428198434) internal successors, (899), 784 states have internal predecessors, (899), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:40:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1493 transitions. [2021-11-13 02:40:40,259 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1493 transitions. Word has length 204 [2021-11-13 02:40:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:40,260 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1493 transitions. [2021-11-13 02:40:40,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-13 02:40:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1493 transitions. [2021-11-13 02:40:40,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-13 02:40:40,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:40,263 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:40,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:40,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:40,463 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:40:40,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1599450154, now seen corresponding path program 1 times [2021-11-13 02:40:40,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:40,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969219164] [2021-11-13 02:40:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:40,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:40,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:40,468 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:40,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 02:40:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:46,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 2977 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:40:46,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2021-11-13 02:40:47,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-13 02:40:48,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:48,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969219164] [2021-11-13 02:40:48,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969219164] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:48,008 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:48,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-13 02:40:48,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384087419] [2021-11-13 02:40:48,008 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:48,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:48,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:48,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:48,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:48,009 INFO L87 Difference]: Start difference. First operand 1155 states and 1493 transitions. Second operand has 8 states, 6 states have (on average 13.0) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-13 02:40:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:49,902 INFO L93 Difference]: Finished difference Result 2343 states and 3050 transitions. [2021-11-13 02:40:49,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:40:49,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.0) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 204 [2021-11-13 02:40:49,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:49,912 INFO L225 Difference]: With dead ends: 2343 [2021-11-13 02:40:49,912 INFO L226 Difference]: Without dead ends: 1241 [2021-11-13 02:40:49,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:40:49,917 INFO L933 BasicCegarLoop]: 1595 mSDtfsCounter, 367 mSDsluCounter, 8978 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1648.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 10573 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 1704.92ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:49,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 10573 Invalid, 253 Unknown, 0 Unchecked, 13.31ms Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 58 Unchecked, 1704.92ms Time] [2021-11-13 02:40:49,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2021-11-13 02:40:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1155. [2021-11-13 02:40:50,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 766 states have (on average 1.1723237597911227) internal successors, (898), 784 states have internal predecessors, (898), 298 states have call successors, (298), 80 states have call predecessors, (298), 79 states have return successors, (296), 295 states have call predecessors, (296), 296 states have call successors, (296) [2021-11-13 02:40:50,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1492 transitions. [2021-11-13 02:40:50,028 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1492 transitions. Word has length 204 [2021-11-13 02:40:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:50,029 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1492 transitions. [2021-11-13 02:40:50,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.0) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-13 02:40:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1492 transitions. [2021-11-13 02:40:50,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-13 02:40:50,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:50,032 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:50,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:50,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:50,258 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:40:50,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1089977064, now seen corresponding path program 1 times [2021-11-13 02:40:50,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:50,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685918171] [2021-11-13 02:40:50,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:50,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:50,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:50,266 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:50,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-13 02:40:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:56,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 2977 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:40:56,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-13 02:40:57,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2021-11-13 02:40:57,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:57,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685918171] [2021-11-13 02:40:57,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685918171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:57,946 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:57,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:40:57,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522238405] [2021-11-13 02:40:57,946 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:57,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:57,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:57,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:57,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:57,948 INFO L87 Difference]: Start difference. First operand 1155 states and 1492 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-13 02:40:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:58,674 INFO L93 Difference]: Finished difference Result 2347 states and 2947 transitions. [2021-11-13 02:40:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:58,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 204 [2021-11-13 02:40:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:58,684 INFO L225 Difference]: With dead ends: 2347 [2021-11-13 02:40:58,684 INFO L226 Difference]: Without dead ends: 1647 [2021-11-13 02:40:58,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:58,687 INFO L933 BasicCegarLoop]: 1766 mSDtfsCounter, 1444 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 392.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.28ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 463.55ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:58,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1444 Valid, 2979 Invalid, 17 Unknown, 0 Unchecked, 9.28ms Time], IncrementalHoareTripleChecker [10 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 463.55ms Time] [2021-11-13 02:40:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2021-11-13 02:40:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1631. [2021-11-13 02:40:58,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1098 states have (on average 1.1794171220400729) internal successors, (1295), 1120 states have internal predecessors, (1295), 398 states have call successors, (398), 124 states have call predecessors, (398), 123 states have return successors, (396), 394 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-13 02:40:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2089 transitions. [2021-11-13 02:40:58,863 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2089 transitions. Word has length 204 [2021-11-13 02:40:58,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:58,864 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 2089 transitions. [2021-11-13 02:40:58,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-13 02:40:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2089 transitions. [2021-11-13 02:40:58,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-13 02:40:58,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:58,867 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:58,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:59,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:59,090 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_linux_net_sock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:40:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:59,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1933436151, now seen corresponding path program 1 times [2021-11-13 02:40:59,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:59,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561134801] [2021-11-13 02:40:59,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:59,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:59,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:59,095 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:59,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 02:41:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:04,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 2641 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:41:04,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:41:05,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:41:05,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:05,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561134801] [2021-11-13 02:41:05,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561134801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:05,900 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:05,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:41:05,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108607767] [2021-11-13 02:41:05,901 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:05,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:41:05,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:05,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:41:05,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:41:05,903 INFO L87 Difference]: Start difference. First operand 1631 states and 2089 transitions. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-13 02:41:06,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:06,130 INFO L93 Difference]: Finished difference Result 1631 states and 2089 transitions. [2021-11-13 02:41:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:41:06,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 169 [2021-11-13 02:41:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:06,138 INFO L225 Difference]: With dead ends: 1631 [2021-11-13 02:41:06,138 INFO L226 Difference]: Without dead ends: 1629 [2021-11-13 02:41:06,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:41:06,140 INFO L933 BasicCegarLoop]: 1483 mSDtfsCounter, 1333 mSDsluCounter, 2962 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 4445 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.17ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:06,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 4445 Invalid, 2 Unknown, 0 Unchecked, 8.22ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 5.17ms Time] [2021-11-13 02:41:06,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2021-11-13 02:41:06,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2021-11-13 02:41:06,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1097 states have (on average 1.178669097538742) internal successors, (1293), 1118 states have internal predecessors, (1293), 398 states have call successors, (398), 124 states have call predecessors, (398), 123 states have return successors, (396), 394 states have call predecessors, (396), 396 states have call successors, (396) [2021-11-13 02:41:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2087 transitions. [2021-11-13 02:41:06,385 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2087 transitions. Word has length 169 [2021-11-13 02:41:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:06,385 INFO L470 AbstractCegarLoop]: Abstraction has 1629 states and 2087 transitions. [2021-11-13 02:41:06,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-13 02:41:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2087 transitions. [2021-11-13 02:41:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-13 02:41:06,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:06,388 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:06,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:06,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:06,598 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:41:06,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash -51266601, now seen corresponding path program 1 times [2021-11-13 02:41:06,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:06,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477284257] [2021-11-13 02:41:06,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:06,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:06,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:06,603 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:06,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-13 02:41:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:13,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:41:13,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-13 02:41:13,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-13 02:41:14,124 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:14,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477284257] [2021-11-13 02:41:14,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477284257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:14,125 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:14,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:41:14,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966813391] [2021-11-13 02:41:14,126 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:14,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:41:14,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:14,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:41:14,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:41:14,127 INFO L87 Difference]: Start difference. First operand 1629 states and 2087 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-13 02:41:14,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:14,692 INFO L93 Difference]: Finished difference Result 2366 states and 2976 transitions. [2021-11-13 02:41:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:41:14,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 210 [2021-11-13 02:41:14,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:14,700 INFO L225 Difference]: With dead ends: 2366 [2021-11-13 02:41:14,700 INFO L226 Difference]: Without dead ends: 1675 [2021-11-13 02:41:14,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:41:14,704 INFO L933 BasicCegarLoop]: 1536 mSDtfsCounter, 1434 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 325.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.10ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 380.59ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:14,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1434 Valid, 1666 Invalid, 12 Unknown, 0 Unchecked, 3.10ms Time], IncrementalHoareTripleChecker [9 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 380.59ms Time] [2021-11-13 02:41:14,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2021-11-13 02:41:15,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1672. [2021-11-13 02:41:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1122 states have (on average 1.1729055258467023) internal successors, (1316), 1144 states have internal predecessors, (1316), 411 states have call successors, (411), 130 states have call predecessors, (411), 129 states have return successors, (409), 405 states have call predecessors, (409), 409 states have call successors, (409) [2021-11-13 02:41:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2136 transitions. [2021-11-13 02:41:15,026 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2136 transitions. Word has length 210 [2021-11-13 02:41:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:15,027 INFO L470 AbstractCegarLoop]: Abstraction has 1672 states and 2136 transitions. [2021-11-13 02:41:15,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-13 02:41:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2136 transitions. [2021-11-13 02:41:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-13 02:41:15,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:15,031 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:15,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:15,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:15,247 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:41:15,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:15,247 INFO L85 PathProgramCache]: Analyzing trace with hash -551765127, now seen corresponding path program 1 times [2021-11-13 02:41:15,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:15,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650853205] [2021-11-13 02:41:15,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:15,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:15,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:15,254 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:15,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-13 02:41:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:20,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:41:20,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:41:21,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:41:22,124 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:22,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650853205] [2021-11-13 02:41:22,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650853205] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:22,124 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:22,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:41:22,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323056271] [2021-11-13 02:41:22,124 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:22,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:41:22,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:41:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:41:22,125 INFO L87 Difference]: Start difference. First operand 1672 states and 2136 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-13 02:41:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:22,668 INFO L93 Difference]: Finished difference Result 3065 states and 3888 transitions. [2021-11-13 02:41:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:41:22,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 175 [2021-11-13 02:41:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:22,679 INFO L225 Difference]: With dead ends: 3065 [2021-11-13 02:41:22,679 INFO L226 Difference]: Without dead ends: 3063 [2021-11-13 02:41:22,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:41:22,683 INFO L933 BasicCegarLoop]: 1921 mSDtfsCounter, 1323 mSDsluCounter, 3069 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 4990 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.07ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:22,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1325 Valid, 4990 Invalid, 16 Unknown, 0 Unchecked, 10.26ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 54.07ms Time] [2021-11-13 02:41:22,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2021-11-13 02:41:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 3030. [2021-11-13 02:41:23,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 2041 states have (on average 1.171484566389025) internal successors, (2391), 2074 states have internal predecessors, (2391), 730 states have call successors, (730), 250 states have call predecessors, (730), 249 states have return successors, (737), 721 states have call predecessors, (737), 728 states have call successors, (737) [2021-11-13 02:41:23,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3858 transitions. [2021-11-13 02:41:23,101 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3858 transitions. Word has length 175 [2021-11-13 02:41:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:23,101 INFO L470 AbstractCegarLoop]: Abstraction has 3030 states and 3858 transitions. [2021-11-13 02:41:23,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-13 02:41:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3858 transitions. [2021-11-13 02:41:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-13 02:41:23,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:23,104 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:23,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:23,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:23,327 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:41:23,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:23,327 INFO L85 PathProgramCache]: Analyzing trace with hash 831265369, now seen corresponding path program 1 times [2021-11-13 02:41:23,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:23,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14752653] [2021-11-13 02:41:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:23,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:23,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:23,334 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:23,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-13 02:41:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:29,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:41:29,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:41:30,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:41:30,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:30,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14752653] [2021-11-13 02:41:30,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14752653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:30,881 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:30,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:41:30,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938351109] [2021-11-13 02:41:30,882 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:30,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:41:30,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:30,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:41:30,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:41:30,884 INFO L87 Difference]: Start difference. First operand 3030 states and 3858 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-13 02:41:31,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:31,213 INFO L93 Difference]: Finished difference Result 3030 states and 3858 transitions. [2021-11-13 02:41:31,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:41:31,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 181 [2021-11-13 02:41:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:31,224 INFO L225 Difference]: With dead ends: 3030 [2021-11-13 02:41:31,224 INFO L226 Difference]: Without dead ends: 3028 [2021-11-13 02:41:31,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:41:31,226 INFO L933 BasicCegarLoop]: 1476 mSDtfsCounter, 1317 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.98ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.56ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:31,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1319 Valid, 2950 Invalid, 2 Unknown, 0 Unchecked, 4.98ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 5.56ms Time] [2021-11-13 02:41:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2021-11-13 02:41:31,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 3028. [2021-11-13 02:41:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2040 states have (on average 1.171078431372549) internal successors, (2389), 2072 states have internal predecessors, (2389), 730 states have call successors, (730), 250 states have call predecessors, (730), 249 states have return successors, (737), 721 states have call predecessors, (737), 728 states have call successors, (737) [2021-11-13 02:41:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 3856 transitions. [2021-11-13 02:41:31,623 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 3856 transitions. Word has length 181 [2021-11-13 02:41:31,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:31,624 INFO L470 AbstractCegarLoop]: Abstraction has 3028 states and 3856 transitions. [2021-11-13 02:41:31,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-13 02:41:31,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 3856 transitions. [2021-11-13 02:41:31,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-13 02:41:31,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:31,628 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:31,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:31,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:31,854 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_linux_usb_urb_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:41:31,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:31,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1850276804, now seen corresponding path program 1 times [2021-11-13 02:41:31,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:31,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862198361] [2021-11-13 02:41:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:31,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:31,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:31,863 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:31,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 02:41:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:37,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:41:37,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:41:38,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:41:39,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:39,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862198361] [2021-11-13 02:41:39,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862198361] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:39,467 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:39,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-13 02:41:39,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676160742] [2021-11-13 02:41:39,468 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:39,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:41:39,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:39,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:41:39,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:41:39,469 INFO L87 Difference]: Start difference. First operand 3028 states and 3856 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-13 02:41:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:40,150 INFO L93 Difference]: Finished difference Result 5906 states and 7581 transitions. [2021-11-13 02:41:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:41:40,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 187 [2021-11-13 02:41:40,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:40,180 INFO L225 Difference]: With dead ends: 5906 [2021-11-13 02:41:40,181 INFO L226 Difference]: Without dead ends: 5694 [2021-11-13 02:41:40,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:41:40,185 INFO L933 BasicCegarLoop]: 1796 mSDtfsCounter, 1303 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 4955 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.69ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:40,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 4955 Invalid, 14 Unknown, 0 Unchecked, 8.69ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 49.00ms Time] [2021-11-13 02:41:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5694 states. [2021-11-13 02:41:41,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5694 to 5670. [2021-11-13 02:41:41,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 3832 states have (on average 1.1764091858037578) internal successors, (4508), 3880 states have internal predecessors, (4508), 1358 states have call successors, (1358), 474 states have call predecessors, (1358), 471 states have return successors, (1438), 1345 states have call predecessors, (1438), 1354 states have call successors, (1438) [2021-11-13 02:41:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 7304 transitions. [2021-11-13 02:41:41,105 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 7304 transitions. Word has length 187 [2021-11-13 02:41:41,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:41,105 INFO L470 AbstractCegarLoop]: Abstraction has 5670 states and 7304 transitions. [2021-11-13 02:41:41,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-13 02:41:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 7304 transitions. [2021-11-13 02:41:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-13 02:41:41,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:41,109 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:41,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:41,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:41,335 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:41:41,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:41,335 INFO L85 PathProgramCache]: Analyzing trace with hash 754196415, now seen corresponding path program 1 times [2021-11-13 02:41:41,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:41,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405163765] [2021-11-13 02:41:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:41,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:41,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:41,344 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:41,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-13 02:41:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:48,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:41:48,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-11-13 02:41:49,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2021-11-13 02:41:49,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:49,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405163765] [2021-11-13 02:41:49,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405163765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:49,963 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:49,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 02:41:49,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133446721] [2021-11-13 02:41:49,963 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:49,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:41:49,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:49,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:41:49,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:41:49,965 INFO L87 Difference]: Start difference. First operand 5670 states and 7304 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 02:41:54,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:54,584 INFO L93 Difference]: Finished difference Result 11916 states and 15534 transitions. [2021-11-13 02:41:54,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:41:54,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 250 [2021-11-13 02:41:54,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:54,614 INFO L225 Difference]: With dead ends: 11916 [2021-11-13 02:41:54,614 INFO L226 Difference]: Without dead ends: 6351 [2021-11-13 02:41:54,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:41:54,633 INFO L933 BasicCegarLoop]: 1661 mSDtfsCounter, 454 mSDsluCounter, 7735 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 277 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3556.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 9396 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.92ms SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3674.15ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:54,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 9396 Invalid, 378 Unknown, 0 Unchecked, 13.92ms Time], IncrementalHoareTripleChecker [277 Valid, 100 Invalid, 1 Unknown, 0 Unchecked, 3674.15ms Time] [2021-11-13 02:41:54,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6351 states. [2021-11-13 02:41:55,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6351 to 5673. [2021-11-13 02:41:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5673 states, 3835 states have (on average 1.176271186440678) internal successors, (4511), 3883 states have internal predecessors, (4511), 1358 states have call successors, (1358), 474 states have call predecessors, (1358), 471 states have return successors, (1438), 1345 states have call predecessors, (1438), 1354 states have call successors, (1438) [2021-11-13 02:41:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 7307 transitions. [2021-11-13 02:41:55,518 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 7307 transitions. Word has length 250 [2021-11-13 02:41:55,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:55,519 INFO L470 AbstractCegarLoop]: Abstraction has 5673 states and 7307 transitions. [2021-11-13 02:41:55,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 02:41:55,520 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 7307 transitions. [2021-11-13 02:41:55,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-13 02:41:55,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:55,522 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:55,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:55,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:55,733 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:41:55,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:55,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1848303891, now seen corresponding path program 1 times [2021-11-13 02:41:55,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:55,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163929229] [2021-11-13 02:41:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:55,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:55,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:55,740 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:55,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-13 02:42:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:03,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 02:42:03,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-11-13 02:42:03,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-11-13 02:42:04,538 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:42:04,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163929229] [2021-11-13 02:42:04,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163929229] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:42:04,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:42:04,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-13 02:42:04,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430543342] [2021-11-13 02:42:04,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:04,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:42:04,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:42:04,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:42:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:42:04,540 INFO L87 Difference]: Start difference. First operand 5673 states and 7307 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-13 02:42:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:42:07,331 INFO L93 Difference]: Finished difference Result 11568 states and 14992 transitions. [2021-11-13 02:42:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:42:07,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 271 [2021-11-13 02:42:07,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:42:07,359 INFO L225 Difference]: With dead ends: 11568 [2021-11-13 02:42:07,359 INFO L226 Difference]: Without dead ends: 6012 [2021-11-13 02:42:07,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:42:07,379 INFO L933 BasicCegarLoop]: 1657 mSDtfsCounter, 344 mSDsluCounter, 6105 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1746.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 7762 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1802.65ms IncrementalHoareTripleChecker+Time [2021-11-13 02:42:07,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 7762 Invalid, 172 Unknown, 0 Unchecked, 13.40ms Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 1802.65ms Time] [2021-11-13 02:42:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6012 states. [2021-11-13 02:42:08,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6012 to 5673. [2021-11-13 02:42:08,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5673 states, 3835 states have (on average 1.1760104302477183) internal successors, (4510), 3883 states have internal predecessors, (4510), 1358 states have call successors, (1358), 474 states have call predecessors, (1358), 471 states have return successors, (1438), 1345 states have call predecessors, (1438), 1354 states have call successors, (1438) [2021-11-13 02:42:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 7306 transitions. [2021-11-13 02:42:08,374 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 7306 transitions. Word has length 271 [2021-11-13 02:42:08,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:08,375 INFO L470 AbstractCegarLoop]: Abstraction has 5673 states and 7306 transitions. [2021-11-13 02:42:08,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-13 02:42:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 7306 transitions. [2021-11-13 02:42:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-13 02:42:08,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:08,378 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:08,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:08,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:42:08,603 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:42:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:08,603 INFO L85 PathProgramCache]: Analyzing trace with hash -395679407, now seen corresponding path program 1 times [2021-11-13 02:42:08,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:42:08,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35680571] [2021-11-13 02:42:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:08,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:42:08,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:42:08,608 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:42:08,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-13 02:42:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:16,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:42:16,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2021-11-13 02:42:17,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-11-13 02:42:17,936 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:42:17,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35680571] [2021-11-13 02:42:17,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35680571] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:42:17,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:42:17,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-13 02:42:17,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228305700] [2021-11-13 02:42:17,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:17,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:42:17,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:42:17,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:42:17,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:42:17,938 INFO L87 Difference]: Start difference. First operand 5673 states and 7306 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-13 02:42:19,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:42:19,825 INFO L93 Difference]: Finished difference Result 11564 states and 14985 transitions. [2021-11-13 02:42:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:42:19,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 271 [2021-11-13 02:42:19,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:42:19,851 INFO L225 Difference]: With dead ends: 11564 [2021-11-13 02:42:19,852 INFO L226 Difference]: Without dead ends: 6012 [2021-11-13 02:42:19,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:42:19,871 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 340 mSDsluCounter, 6106 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 964.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 7762 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1026.70ms IncrementalHoareTripleChecker+Time [2021-11-13 02:42:19,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 7762 Invalid, 172 Unknown, 0 Unchecked, 12.64ms Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 1026.70ms Time] [2021-11-13 02:42:19,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6012 states. [2021-11-13 02:42:20,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6012 to 5673. [2021-11-13 02:42:20,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5673 states, 3835 states have (on average 1.1757496740547588) internal successors, (4509), 3883 states have internal predecessors, (4509), 1358 states have call successors, (1358), 474 states have call predecessors, (1358), 471 states have return successors, (1438), 1345 states have call predecessors, (1438), 1354 states have call successors, (1438) [2021-11-13 02:42:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 7305 transitions. [2021-11-13 02:42:20,830 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 7305 transitions. Word has length 271 [2021-11-13 02:42:20,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:20,831 INFO L470 AbstractCegarLoop]: Abstraction has 5673 states and 7305 transitions. [2021-11-13 02:42:20,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-13 02:42:20,832 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 7305 transitions. [2021-11-13 02:42:20,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-13 02:42:20,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:20,835 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:20,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:21,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:42:21,051 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:42:21,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:21,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1527548627, now seen corresponding path program 1 times [2021-11-13 02:42:21,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:42:21,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835746868] [2021-11-13 02:42:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:21,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:42:21,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:42:21,056 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:42:21,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-13 02:42:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:28,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:42:28,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2021-11-13 02:42:29,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-11-13 02:42:29,786 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:42:29,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835746868] [2021-11-13 02:42:29,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835746868] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:42:29,786 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:42:29,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:42:29,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675763072] [2021-11-13 02:42:29,787 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:29,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:42:29,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:42:29,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:42:29,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:42:29,789 INFO L87 Difference]: Start difference. First operand 5673 states and 7305 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 02:42:30,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:42:30,991 INFO L93 Difference]: Finished difference Result 11225 states and 14457 transitions. [2021-11-13 02:42:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:42:31,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 271 [2021-11-13 02:42:31,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:42:31,030 INFO L225 Difference]: With dead ends: 11225 [2021-11-13 02:42:31,030 INFO L226 Difference]: Without dead ends: 5679 [2021-11-13 02:42:31,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:42:31,050 INFO L933 BasicCegarLoop]: 1470 mSDtfsCounter, 12 mSDsluCounter, 2938 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 434.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4408 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.66ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 454.55ms IncrementalHoareTripleChecker+Time [2021-11-13 02:42:31,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 4408 Invalid, 15 Unknown, 0 Unchecked, 5.66ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 454.55ms Time] [2021-11-13 02:42:31,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2021-11-13 02:42:32,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 5679. [2021-11-13 02:42:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5679 states, 3841 states have (on average 1.1754751366831555) internal successors, (4515), 3889 states have internal predecessors, (4515), 1358 states have call successors, (1358), 474 states have call predecessors, (1358), 471 states have return successors, (1438), 1345 states have call predecessors, (1438), 1354 states have call successors, (1438) [2021-11-13 02:42:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5679 states to 5679 states and 7311 transitions. [2021-11-13 02:42:32,086 INFO L78 Accepts]: Start accepts. Automaton has 5679 states and 7311 transitions. Word has length 271 [2021-11-13 02:42:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:32,087 INFO L470 AbstractCegarLoop]: Abstraction has 5679 states and 7311 transitions. [2021-11-13 02:42:32,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 02:42:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5679 states and 7311 transitions. [2021-11-13 02:42:32,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-13 02:42:32,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:32,089 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:32,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:32,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:42:32,312 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:42:32,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:32,313 INFO L85 PathProgramCache]: Analyzing trace with hash -693441059, now seen corresponding path program 1 times [2021-11-13 02:42:32,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:42:32,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419689215] [2021-11-13 02:42:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:32,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:42:32,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:42:32,317 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:42:32,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-13 02:42:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:40,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 3193 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:42:40,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:40,735 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2021-11-13 02:42:40,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-11-13 02:42:41,452 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:42:41,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419689215] [2021-11-13 02:42:41,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419689215] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:42:41,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [81930839] [2021-11-13 02:42:41,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:41,453 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:42:41,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:42:41,454 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:42:41,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-11-13 02:42:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:44,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 3193 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:42:44,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2021-11-13 02:42:46,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2021-11-13 02:42:47,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [81930839] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:42:47,659 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:42:47,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [6, 6] total 15 [2021-11-13 02:42:47,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142475814] [2021-11-13 02:42:47,660 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:47,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:42:47,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:42:47,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:42:47,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:42:47,662 INFO L87 Difference]: Start difference. First operand 5679 states and 7311 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 states have internal predecessors, (126), 2 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-13 02:42:50,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:42:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:42:53,842 INFO L93 Difference]: Finished difference Result 11210 states and 14632 transitions. [2021-11-13 02:42:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:42:53,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 states have internal predecessors, (126), 2 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) Word has length 279 [2021-11-13 02:42:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:42:53,868 INFO L225 Difference]: With dead ends: 11210 [2021-11-13 02:42:53,869 INFO L226 Difference]: Without dead ends: 5679 [2021-11-13 02:42:53,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1114 GetRequests, 1099 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:42:53,886 INFO L933 BasicCegarLoop]: 1468 mSDtfsCounter, 1318 mSDsluCounter, 3802 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4809.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 5270 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.51ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5145.27ms IncrementalHoareTripleChecker+Time [2021-11-13 02:42:53,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1326 Valid, 5270 Invalid, 606 Unknown, 0 Unchecked, 16.51ms Time], IncrementalHoareTripleChecker [3 Valid, 602 Invalid, 1 Unknown, 0 Unchecked, 5145.27ms Time] [2021-11-13 02:42:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2021-11-13 02:42:54,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 5679. [2021-11-13 02:42:54,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5679 states, 3841 states have (on average 1.173392345743296) internal successors, (4507), 3889 states have internal predecessors, (4507), 1358 states have call successors, (1358), 474 states have call predecessors, (1358), 471 states have return successors, (1438), 1345 states have call predecessors, (1438), 1354 states have call successors, (1438) [2021-11-13 02:42:54,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5679 states to 5679 states and 7303 transitions. [2021-11-13 02:42:54,913 INFO L78 Accepts]: Start accepts. Automaton has 5679 states and 7303 transitions. Word has length 279 [2021-11-13 02:42:54,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:54,914 INFO L470 AbstractCegarLoop]: Abstraction has 5679 states and 7303 transitions. [2021-11-13 02:42:54,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 states have internal predecessors, (126), 2 states have call successors, (60), 2 states have call predecessors, (60), 4 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-13 02:42:54,914 INFO L276 IsEmpty]: Start isEmpty. Operand 5679 states and 7303 transitions. [2021-11-13 02:42:54,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-13 02:42:54,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:54,917 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:55,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:55,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:55,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:42:55,331 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:42:55,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:55,331 INFO L85 PathProgramCache]: Analyzing trace with hash -693381477, now seen corresponding path program 1 times [2021-11-13 02:42:55,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:42:55,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631699293] [2021-11-13 02:42:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:55,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:42:55,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:42:55,337 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:42:55,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-13 02:43:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:02,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 3193 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:43:02,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2021-11-13 02:43:03,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-11-13 02:43:04,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:43:04,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631699293] [2021-11-13 02:43:04,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631699293] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:43:04,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [868695997] [2021-11-13 02:43:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:04,172 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:43:04,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:43:04,173 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:43:04,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-11-13 02:43:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:06,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 3193 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:43:06,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2021-11-13 02:43:07,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-11-13 02:43:07,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [868695997] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:43:07,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699117927] [2021-11-13 02:43:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:07,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:43:07,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:43:07,945 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:43:07,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-13 02:43:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:11,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 3193 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:43:11,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2021-11-13 02:43:11,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-11-13 02:43:12,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699117927] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:43:12,536 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:43:12,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-13 02:43:12,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496018089] [2021-11-13 02:43:12,536 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:43:12,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:43:12,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:43:12,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:43:12,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:43:12,538 INFO L87 Difference]: Start difference. First operand 5679 states and 7303 transitions. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 02:43:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:14,876 INFO L93 Difference]: Finished difference Result 11241 states and 14459 transitions. [2021-11-13 02:43:14,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:43:14,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 279 [2021-11-13 02:43:14,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:14,906 INFO L225 Difference]: With dead ends: 11241 [2021-11-13 02:43:14,907 INFO L226 Difference]: Without dead ends: 5695 [2021-11-13 02:43:14,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1673 GetRequests, 1660 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:43:14,922 INFO L933 BasicCegarLoop]: 1473 mSDtfsCounter, 30 mSDsluCounter, 7349 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1340.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 8822 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.45ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1391.81ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:14,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 8822 Invalid, 49 Unknown, 0 Unchecked, 8.45ms Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 1391.81ms Time] [2021-11-13 02:43:14,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5695 states. [2021-11-13 02:43:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5695 to 5695. [2021-11-13 02:43:15,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5695 states, 3857 states have (on average 1.172673061965258) internal successors, (4523), 3905 states have internal predecessors, (4523), 1358 states have call successors, (1358), 474 states have call predecessors, (1358), 471 states have return successors, (1438), 1345 states have call predecessors, (1438), 1354 states have call successors, (1438) [2021-11-13 02:43:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5695 states to 5695 states and 7319 transitions. [2021-11-13 02:43:15,793 INFO L78 Accepts]: Start accepts. Automaton has 5695 states and 7319 transitions. Word has length 279 [2021-11-13 02:43:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:15,794 INFO L470 AbstractCegarLoop]: Abstraction has 5695 states and 7319 transitions. [2021-11-13 02:43:15,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 02:43:15,794 INFO L276 IsEmpty]: Start isEmpty. Operand 5695 states and 7319 transitions. [2021-11-13 02:43:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-13 02:43:15,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:15,796 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:15,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-13 02:43:16,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-11-13 02:43:16,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2021-11-13 02:43:16,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:43:16,397 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:43:16,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1898695966, now seen corresponding path program 1 times [2021-11-13 02:43:16,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:16,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137446372] [2021-11-13 02:43:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:16,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:16,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:16,405 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:16,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-13 02:43:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:23,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 3159 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-13 02:43:23,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2021-11-13 02:43:25,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-11-13 02:43:26,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:43:26,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137446372] [2021-11-13 02:43:26,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137446372] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:43:26,942 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:43:26,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 25 [2021-11-13 02:43:26,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039586890] [2021-11-13 02:43:26,943 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:43:26,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-13 02:43:26,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:43:26,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-13 02:43:26,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-11-13 02:43:26,944 INFO L87 Difference]: Start difference. First operand 5695 states and 7319 transitions. Second operand has 25 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 23 states have internal predecessors, (123), 10 states have call successors, (46), 2 states have call predecessors, (46), 5 states have return successors, (42), 10 states have call predecessors, (42), 10 states have call successors, (42) [2021-11-13 02:43:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:35,402 INFO L93 Difference]: Finished difference Result 8747 states and 11275 transitions. [2021-11-13 02:43:35,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-13 02:43:35,403 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 23 states have internal predecessors, (123), 10 states have call successors, (46), 2 states have call predecessors, (46), 5 states have return successors, (42), 10 states have call predecessors, (42), 10 states have call successors, (42) Word has length 275 [2021-11-13 02:43:35,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:35,428 INFO L225 Difference]: With dead ends: 8747 [2021-11-13 02:43:35,428 INFO L226 Difference]: Without dead ends: 6289 [2021-11-13 02:43:35,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=229, Invalid=1253, Unknown=0, NotChecked=0, Total=1482 [2021-11-13 02:43:35,437 INFO L933 BasicCegarLoop]: 1544 mSDtfsCounter, 462 mSDsluCounter, 31510 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5698.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 33054 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.17ms SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5989.57ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:35,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 33054 Invalid, 1803 Unknown, 0 Unchecked, 48.17ms Time], IncrementalHoareTripleChecker [432 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 5989.57ms Time] [2021-11-13 02:43:35,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2021-11-13 02:43:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 5736. [2021-11-13 02:43:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5736 states, 3891 states have (on average 1.1691081984065792) internal successors, (4549), 3941 states have internal predecessors, (4549), 1367 states have call successors, (1367), 472 states have call predecessors, (1367), 469 states have return successors, (1445), 1352 states have call predecessors, (1445), 1363 states have call successors, (1445) [2021-11-13 02:43:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5736 states to 5736 states and 7361 transitions. [2021-11-13 02:43:36,254 INFO L78 Accepts]: Start accepts. Automaton has 5736 states and 7361 transitions. Word has length 275 [2021-11-13 02:43:36,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:36,255 INFO L470 AbstractCegarLoop]: Abstraction has 5736 states and 7361 transitions. [2021-11-13 02:43:36,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 23 states have internal predecessors, (123), 10 states have call successors, (46), 2 states have call predecessors, (46), 5 states have return successors, (42), 10 states have call predecessors, (42), 10 states have call successors, (42) [2021-11-13 02:43:36,255 INFO L276 IsEmpty]: Start isEmpty. Operand 5736 states and 7361 transitions. [2021-11-13 02:43:36,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-11-13 02:43:36,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:36,258 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:36,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-13 02:43:36,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:43:36,460 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:43:36,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:36,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1828626095, now seen corresponding path program 2 times [2021-11-13 02:43:36,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:36,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539720897] [2021-11-13 02:43:36,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:43:36,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:36,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:36,466 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:36,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-13 02:43:41,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 02:43:41,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:43:42,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:43:42,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2021-11-13 02:43:42,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2021-11-13 02:43:43,093 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:43:43,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539720897] [2021-11-13 02:43:43,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539720897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:43:43,093 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:43:43,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:43:43,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992243160] [2021-11-13 02:43:43,093 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:43:43,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:43:43,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:43:43,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:43:43,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:43:43,095 INFO L87 Difference]: Start difference. First operand 5736 states and 7361 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 02:43:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:43,786 INFO L93 Difference]: Finished difference Result 5736 states and 7361 transitions. [2021-11-13 02:43:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:43:43,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 295 [2021-11-13 02:43:43,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:43,803 INFO L225 Difference]: With dead ends: 5736 [2021-11-13 02:43:43,803 INFO L226 Difference]: Without dead ends: 5734 [2021-11-13 02:43:43,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:43:43,807 INFO L933 BasicCegarLoop]: 1465 mSDtfsCounter, 11 mSDsluCounter, 4387 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5852 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.14ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:43,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 5852 Invalid, 3 Unknown, 0 Unchecked, 6.10ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 10.14ms Time] [2021-11-13 02:43:43,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2021-11-13 02:43:44,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 5734. [2021-11-13 02:43:44,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 3890 states have (on average 1.167095115681234) internal successors, (4540), 3939 states have internal predecessors, (4540), 1367 states have call successors, (1367), 472 states have call predecessors, (1367), 469 states have return successors, (1445), 1352 states have call predecessors, (1445), 1363 states have call successors, (1445) [2021-11-13 02:43:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 7352 transitions. [2021-11-13 02:43:44,592 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 7352 transitions. Word has length 295 [2021-11-13 02:43:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:44,593 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 7352 transitions. [2021-11-13 02:43:44,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-13 02:43:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 7352 transitions. [2021-11-13 02:43:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-13 02:43:44,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:44,595 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:44,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-11-13 02:43:44,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:43:44,796 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:43:44,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:44,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1628141447, now seen corresponding path program 1 times [2021-11-13 02:43:44,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:44,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642087490] [2021-11-13 02:43:44,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:44,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:44,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:44,802 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:44,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-13 02:43:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:52,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 3228 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:43:52,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 15 proven. 72 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2021-11-13 02:43:53,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-11-13 02:43:54,670 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:43:54,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642087490] [2021-11-13 02:43:54,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642087490] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:43:54,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [621233975] [2021-11-13 02:43:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:54,670 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:43:54,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:43:54,671 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:43:54,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2021-11-13 02:43:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:57,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 3228 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:43:57,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2021-11-13 02:43:59,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2021-11-13 02:44:00,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [621233975] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:44:00,651 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:44:00,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [10, 10] total 20 [2021-11-13 02:44:00,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453379953] [2021-11-13 02:44:00,651 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:00,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:44:00,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:44:00,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:44:00,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:44:00,653 INFO L87 Difference]: Start difference. First operand 5734 states and 7352 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 3 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-13 02:44:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:01,426 INFO L93 Difference]: Finished difference Result 11289 states and 14677 transitions. [2021-11-13 02:44:01,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:44:01,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 3 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 302 [2021-11-13 02:44:01,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:01,439 INFO L225 Difference]: With dead ends: 11289 [2021-11-13 02:44:01,439 INFO L226 Difference]: Without dead ends: 5716 [2021-11-13 02:44:01,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1204 GetRequests, 1186 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:44:01,454 INFO L933 BasicCegarLoop]: 1461 mSDtfsCounter, 1337 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.23ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.41ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:01,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 1461 Invalid, 36 Unknown, 0 Unchecked, 3.23ms Time], IncrementalHoareTripleChecker [35 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 43.41ms Time] [2021-11-13 02:44:01,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2021-11-13 02:44:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 5716. [2021-11-13 02:44:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5716 states, 3873 states have (on average 1.163697392202427) internal successors, (4507), 3921 states have internal predecessors, (4507), 1367 states have call successors, (1367), 472 states have call predecessors, (1367), 469 states have return successors, (1445), 1352 states have call predecessors, (1445), 1363 states have call successors, (1445) [2021-11-13 02:44:02,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 7319 transitions. [2021-11-13 02:44:02,281 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 7319 transitions. Word has length 302 [2021-11-13 02:44:02,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:02,282 INFO L470 AbstractCegarLoop]: Abstraction has 5716 states and 7319 transitions. [2021-11-13 02:44:02,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 3 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-13 02:44:02,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 7319 transitions. [2021-11-13 02:44:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-11-13 02:44:02,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:02,286 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:02,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:02,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:02,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:44:02,687 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:44:02,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:02,687 INFO L85 PathProgramCache]: Analyzing trace with hash 678965092, now seen corresponding path program 1 times [2021-11-13 02:44:02,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:44:02,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425533723] [2021-11-13 02:44:02,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:02,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:44:02,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:44:02,693 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:44:02,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-13 02:44:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:11,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 3660 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:44:11,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 158 proven. 72 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2021-11-13 02:44:12,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:14,211 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2021-11-13 02:44:14,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:44:14,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425533723] [2021-11-13 02:44:14,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425533723] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:44:14,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1146710] [2021-11-13 02:44:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:14,212 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:44:14,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:44:14,212 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:44:14,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2021-11-13 02:44:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:17,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 3660 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:44:17,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 158 proven. 72 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2021-11-13 02:44:18,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2021-11-13 02:44:19,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1146710] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:44:19,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508045130] [2021-11-13 02:44:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:19,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:19,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:44:19,275 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:44:19,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-13 02:44:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:22,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 3660 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 02:44:22,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2021-11-13 02:44:23,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 877 trivial. 0 not checked. [2021-11-13 02:44:25,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508045130] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:25,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 02:44:25,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 10, 10, 10, 7] total 28 [2021-11-13 02:44:25,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771797737] [2021-11-13 02:44:25,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:25,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:44:25,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:44:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:44:25,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2021-11-13 02:44:25,731 INFO L87 Difference]: Start difference. First operand 5716 states and 7319 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 6 states have internal predecessors, (173), 3 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-13 02:44:28,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:44:29,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:29,107 INFO L93 Difference]: Finished difference Result 11339 states and 14642 transitions. [2021-11-13 02:44:29,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:44:29,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 6 states have internal predecessors, (173), 3 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) Word has length 437 [2021-11-13 02:44:29,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:29,129 INFO L225 Difference]: With dead ends: 11339 [2021-11-13 02:44:29,129 INFO L226 Difference]: Without dead ends: 5788 [2021-11-13 02:44:29,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2618 GetRequests, 2590 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2021-11-13 02:44:29,142 INFO L933 BasicCegarLoop]: 1467 mSDtfsCounter, 9 mSDsluCounter, 7326 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2339.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8793 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2375.63ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:29,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 8793 Invalid, 28 Unknown, 0 Unchecked, 9.95ms Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2375.63ms Time] [2021-11-13 02:44:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2021-11-13 02:44:29,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 5780. [2021-11-13 02:44:29,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5780 states, 3917 states have (on average 1.1618585652284912) internal successors, (4551), 3969 states have internal predecessors, (4551), 1375 states have call successors, (1375), 472 states have call predecessors, (1375), 481 states have return successors, (1492), 1368 states have call predecessors, (1492), 1371 states have call successors, (1492) [2021-11-13 02:44:29,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5780 states to 5780 states and 7418 transitions. [2021-11-13 02:44:29,934 INFO L78 Accepts]: Start accepts. Automaton has 5780 states and 7418 transitions. Word has length 437 [2021-11-13 02:44:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:29,935 INFO L470 AbstractCegarLoop]: Abstraction has 5780 states and 7418 transitions. [2021-11-13 02:44:29,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 6 states have internal predecessors, (173), 3 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-13 02:44:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 5780 states and 7418 transitions. [2021-11-13 02:44:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2021-11-13 02:44:29,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:29,940 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 11, 11, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:30,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-11-13 02:44:30,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:30,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (45)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:30,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:44:30,550 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:44:30,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1227335428, now seen corresponding path program 1 times [2021-11-13 02:44:30,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:44:30,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053174726] [2021-11-13 02:44:30,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:30,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:44:30,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:44:30,558 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:44:30,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-13 02:44:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:39,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 3847 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:44:39,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 333 proven. 72 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2021-11-13 02:44:41,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 7 proven. 72 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2021-11-13 02:44:42,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:44:42,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053174726] [2021-11-13 02:44:42,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053174726] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:44:42,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1536821495] [2021-11-13 02:44:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:42,786 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:44:42,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:44:42,787 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:44:42,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2021-11-13 02:44:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:45,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 3847 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:44:45,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:47,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 333 proven. 72 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2021-11-13 02:44:47,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 7 proven. 72 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2021-11-13 02:44:48,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1536821495] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:44:48,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971653032] [2021-11-13 02:44:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:48,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:48,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:44:48,390 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:44:48,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-13 02:44:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:51,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 3847 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:44:51,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2021-11-13 02:44:53,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1117 trivial. 0 not checked. [2021-11-13 02:44:54,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971653032] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:44:54,590 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 02:44:54,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [10, 10, 10, 10] total 26 [2021-11-13 02:44:54,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004619656] [2021-11-13 02:44:54,591 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:54,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:44:54,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:44:54,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:44:54,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-11-13 02:44:54,593 INFO L87 Difference]: Start difference. First operand 5780 states and 7418 transitions. Second operand has 10 states, 10 states have (on average 21.5) internal successors, (215), 8 states have internal predecessors, (215), 2 states have call successors, (79), 2 states have call predecessors, (79), 4 states have return successors, (78), 4 states have call predecessors, (78), 2 states have call successors, (78) [2021-11-13 02:44:57,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:44:59,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:45:02,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:45:04,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:45:05,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:45:05,929 INFO L93 Difference]: Finished difference Result 11432 states and 14690 transitions. [2021-11-13 02:45:05,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:45:05,930 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.5) internal successors, (215), 8 states have internal predecessors, (215), 2 states have call successors, (79), 2 states have call predecessors, (79), 4 states have return successors, (78), 4 states have call predecessors, (78), 2 states have call successors, (78) Word has length 496 [2021-11-13 02:45:05,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:45:05,945 INFO L225 Difference]: With dead ends: 11432 [2021-11-13 02:45:05,946 INFO L226 Difference]: Without dead ends: 5931 [2021-11-13 02:45:05,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2972 GetRequests, 2946 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2021-11-13 02:45:05,955 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 63 mSDsluCounter, 10476 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10116.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 11997 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.40ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10278.32ms IncrementalHoareTripleChecker+Time [2021-11-13 02:45:05,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 11997 Invalid, 128 Unknown, 0 Unchecked, 13.40ms Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 4 Unknown, 0 Unchecked, 10278.32ms Time] [2021-11-13 02:45:05,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5931 states. [2021-11-13 02:45:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5931 to 5782. [2021-11-13 02:45:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 3918 states have (on average 1.1618172537008677) internal successors, (4552), 3971 states have internal predecessors, (4552), 1375 states have call successors, (1375), 472 states have call predecessors, (1375), 482 states have return successors, (1497), 1368 states have call predecessors, (1497), 1371 states have call successors, (1497) [2021-11-13 02:45:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 7424 transitions. [2021-11-13 02:45:06,781 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 7424 transitions. Word has length 496 [2021-11-13 02:45:06,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:45:06,782 INFO L470 AbstractCegarLoop]: Abstraction has 5782 states and 7424 transitions. [2021-11-13 02:45:06,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.5) internal successors, (215), 8 states have internal predecessors, (215), 2 states have call successors, (79), 2 states have call predecessors, (79), 4 states have return successors, (78), 4 states have call predecessors, (78), 2 states have call successors, (78) [2021-11-13 02:45:06,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 7424 transitions. [2021-11-13 02:45:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2021-11-13 02:45:06,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:45:06,786 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:45:06,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:07,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:07,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:07,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:07,387 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:45:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:45:07,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2106068523, now seen corresponding path program 1 times [2021-11-13 02:45:07,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:45:07,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123062827] [2021-11-13 02:45:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:07,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:45:07,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:45:07,394 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:45:07,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-11-13 02:45:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:16,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 4031 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:45:16,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 306 proven. 72 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2021-11-13 02:45:17,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2021-11-13 02:45:19,318 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:45:19,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123062827] [2021-11-13 02:45:19,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123062827] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:45:19,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2068465769] [2021-11-13 02:45:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:19,319 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:45:19,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:45:19,320 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:45:19,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2021-11-13 02:45:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:22,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 4031 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:45:22,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 306 proven. 72 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2021-11-13 02:45:23,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2021-11-13 02:45:24,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2068465769] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:45:24,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259222783] [2021-11-13 02:45:24,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:24,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:24,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:45:24,654 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:45:24,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-13 02:45:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:27,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 4031 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 02:45:27,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-11-13 02:45:29,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1144 trivial. 0 not checked. [2021-11-13 02:45:32,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259222783] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:45:32,639 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 02:45:32,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [10, 10, 10, 10] total 34 [2021-11-13 02:45:32,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380221297] [2021-11-13 02:45:32,640 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:45:32,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 02:45:32,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:45:32,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 02:45:32,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 02:45:32,642 INFO L87 Difference]: Start difference. First operand 5782 states and 7424 transitions. Second operand has 18 states, 18 states have (on average 10.444444444444445) internal successors, (188), 14 states have internal predecessors, (188), 4 states have call successors, (66), 2 states have call predecessors, (66), 6 states have return successors, (66), 8 states have call predecessors, (66), 4 states have call successors, (66) [2021-11-13 02:45:34,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:45:36,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:45:38,733 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:45:40,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:45:43,424 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:45:45,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:45:45,081 INFO L93 Difference]: Finished difference Result 11482 states and 14875 transitions. [2021-11-13 02:45:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 02:45:45,082 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.444444444444445) internal successors, (188), 14 states have internal predecessors, (188), 4 states have call successors, (66), 2 states have call predecessors, (66), 6 states have return successors, (66), 8 states have call predecessors, (66), 4 states have call successors, (66) Word has length 518 [2021-11-13 02:45:45,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:45:45,096 INFO L225 Difference]: With dead ends: 11482 [2021-11-13 02:45:45,096 INFO L226 Difference]: Without dead ends: 5865 [2021-11-13 02:45:45,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3108 GetRequests, 3070 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2021-11-13 02:45:45,107 INFO L933 BasicCegarLoop]: 1484 mSDtfsCounter, 40 mSDsluCounter, 16297 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10477.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 17781 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.11ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10587.63ms IncrementalHoareTripleChecker+Time [2021-11-13 02:45:45,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 17781 Invalid, 96 Unknown, 0 Unchecked, 19.11ms Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 5 Unknown, 0 Unchecked, 10587.63ms Time] [2021-11-13 02:45:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5865 states. [2021-11-13 02:45:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5865 to 5715. [2021-11-13 02:45:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5715 states, 3860 states have (on average 1.154922279792746) internal successors, (4458), 3905 states have internal predecessors, (4458), 1367 states have call successors, (1367), 467 states have call predecessors, (1367), 481 states have return successors, (1488), 1372 states have call predecessors, (1488), 1363 states have call successors, (1488) [2021-11-13 02:45:45,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5715 states to 5715 states and 7313 transitions. [2021-11-13 02:45:45,960 INFO L78 Accepts]: Start accepts. Automaton has 5715 states and 7313 transitions. Word has length 518 [2021-11-13 02:45:45,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:45:45,960 INFO L470 AbstractCegarLoop]: Abstraction has 5715 states and 7313 transitions. [2021-11-13 02:45:45,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.444444444444445) internal successors, (188), 14 states have internal predecessors, (188), 4 states have call successors, (66), 2 states have call predecessors, (66), 6 states have return successors, (66), 8 states have call predecessors, (66), 4 states have call successors, (66) [2021-11-13 02:45:45,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5715 states and 7313 transitions. [2021-11-13 02:45:45,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-11-13 02:45:45,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:45:45,964 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 9, 9, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:45:46,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:46,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:46,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (51)] Ended with exit code 0 [2021-11-13 02:45:46,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:45:46,567 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:45:46,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:45:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1632122747, now seen corresponding path program 1 times [2021-11-13 02:45:46,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:45:46,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973557816] [2021-11-13 02:45:46,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:46,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:45:46,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:45:46,572 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:45:46,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-11-13 02:45:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:54,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 3725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:45:54,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 418 proven. 72 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2021-11-13 02:45:55,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2021-11-13 02:45:57,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:45:57,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973557816] [2021-11-13 02:45:57,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973557816] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:45:57,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [634285519] [2021-11-13 02:45:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:57,464 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:45:57,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:45:57,465 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:45:57,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2021-11-13 02:45:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:00,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 3725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:46:00,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:46:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 418 proven. 72 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2021-11-13 02:46:01,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:46:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2021-11-13 02:46:02,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [634285519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:46:02,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102950551] [2021-11-13 02:46:02,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:02,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:46:02,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:46:02,305 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:46:02,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-13 02:46:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:05,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 3725 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:46:05,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:46:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2021-11-13 02:46:07,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:46:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 1181 trivial. 0 not checked. [2021-11-13 02:46:08,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102950551] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:46:08,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 02:46:08,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 10, 10, 10, 6] total 24 [2021-11-13 02:46:08,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839150061] [2021-11-13 02:46:08,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:46:08,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:46:08,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:46:08,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:46:08,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:46:08,638 INFO L87 Difference]: Start difference. First operand 5715 states and 7313 transitions. Second operand has 6 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 3 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-13 02:46:10,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:46:10,902 INFO L93 Difference]: Finished difference Result 11278 states and 14440 transitions. [2021-11-13 02:46:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:46:10,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 3 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 469 [2021-11-13 02:46:10,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:46:10,926 INFO L225 Difference]: With dead ends: 11278 [2021-11-13 02:46:10,926 INFO L226 Difference]: Without dead ends: 5715 [2021-11-13 02:46:10,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2809 GetRequests, 2786 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2021-11-13 02:46:10,937 INFO L933 BasicCegarLoop]: 1431 mSDtfsCounter, 330 mSDsluCounter, 5206 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1398.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 6637 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1464.73ms IncrementalHoareTripleChecker+Time [2021-11-13 02:46:10,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 6637 Invalid, 168 Unknown, 0 Unchecked, 9.12ms Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 1464.73ms Time] [2021-11-13 02:46:10,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5715 states. [2021-11-13 02:46:11,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5715 to 5715. [2021-11-13 02:46:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5715 states, 3860 states have (on average 1.1546632124352332) internal successors, (4457), 3905 states have internal predecessors, (4457), 1367 states have call successors, (1367), 467 states have call predecessors, (1367), 481 states have return successors, (1488), 1372 states have call predecessors, (1488), 1363 states have call successors, (1488) [2021-11-13 02:46:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5715 states to 5715 states and 7312 transitions. [2021-11-13 02:46:11,741 INFO L78 Accepts]: Start accepts. Automaton has 5715 states and 7312 transitions. Word has length 469 [2021-11-13 02:46:11,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:46:11,741 INFO L470 AbstractCegarLoop]: Abstraction has 5715 states and 7312 transitions. [2021-11-13 02:46:11,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 3 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-13 02:46:11,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5715 states and 7312 transitions. [2021-11-13 02:46:11,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2021-11-13 02:46:11,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:46:11,745 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 10, 10, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:46:11,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:12,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:12,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (54)] Ended with exit code 0 [2021-11-13 02:46:12,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:46:12,346 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:46:12,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:46:12,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2037601339, now seen corresponding path program 1 times [2021-11-13 02:46:12,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:46:12,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841640048] [2021-11-13 02:46:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:12,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:46:12,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:46:12,361 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:46:12,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-11-13 02:46:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:20,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 3931 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:46:20,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:46:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 466 proven. 72 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2021-11-13 02:46:22,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:46:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2021-11-13 02:46:24,080 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:46:24,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841640048] [2021-11-13 02:46:24,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841640048] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:46:24,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1342388176] [2021-11-13 02:46:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:24,080 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:46:24,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:46:24,081 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:46:24,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2021-11-13 02:46:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:26,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 3931 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:46:26,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:46:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 466 proven. 72 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2021-11-13 02:46:28,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:46:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2021-11-13 02:46:29,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1342388176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:46:29,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500053510] [2021-11-13 02:46:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:29,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:46:29,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:46:29,470 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:46:29,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-13 02:46:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:33,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 3931 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:46:33,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:46:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 524 proven. 0 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2021-11-13 02:46:34,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:46:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 1322 trivial. 0 not checked. [2021-11-13 02:46:36,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500053510] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:46:36,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 02:46:36,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 10, 10, 10, 6] total 24 [2021-11-13 02:46:36,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666999692] [2021-11-13 02:46:36,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:46:36,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:46:36,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:46:36,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:46:36,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:46:36,255 INFO L87 Difference]: Start difference. First operand 5715 states and 7312 transitions. Second operand has 6 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 3 states have call successors, (62), 2 states have call predecessors, (62), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-13 02:46:37,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:46:37,546 INFO L93 Difference]: Finished difference Result 6349 states and 8093 transitions. [2021-11-13 02:46:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:46:37,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 3 states have call successors, (62), 2 states have call predecessors, (62), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 533 [2021-11-13 02:46:37,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:46:37,558 INFO L225 Difference]: With dead ends: 6349 [2021-11-13 02:46:37,558 INFO L226 Difference]: Without dead ends: 5719 [2021-11-13 02:46:37,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3193 GetRequests, 3170 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2021-11-13 02:46:37,561 INFO L933 BasicCegarLoop]: 1435 mSDtfsCounter, 13 mSDsluCounter, 5694 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 496.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 7129 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 535.64ms IncrementalHoareTripleChecker+Time [2021-11-13 02:46:37,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 7129 Invalid, 173 Unknown, 0 Unchecked, 8.57ms Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 535.64ms Time] [2021-11-13 02:46:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5719 states. [2021-11-13 02:46:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5719 to 5717. [2021-11-13 02:46:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5717 states, 3861 states have (on average 1.1541051541051541) internal successors, (4456), 3907 states have internal predecessors, (4456), 1367 states have call successors, (1367), 467 states have call predecessors, (1367), 482 states have return successors, (1491), 1372 states have call predecessors, (1491), 1363 states have call successors, (1491) [2021-11-13 02:46:38,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 7314 transitions. [2021-11-13 02:46:38,261 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 7314 transitions. Word has length 533 [2021-11-13 02:46:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:46:38,262 INFO L470 AbstractCegarLoop]: Abstraction has 5717 states and 7314 transitions. [2021-11-13 02:46:38,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 3 states have call successors, (62), 2 states have call predecessors, (62), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-13 02:46:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 7314 transitions. [2021-11-13 02:46:38,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2021-11-13 02:46:38,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:46:38,267 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 9, 9, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:46:38,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:38,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-11-13 02:46:38,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (57)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:38,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:46:38,868 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:46:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:46:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash -136447804, now seen corresponding path program 1 times [2021-11-13 02:46:38,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:46:38,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245118541] [2021-11-13 02:46:38,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:38,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:46:38,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:46:38,874 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:46:38,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-11-13 02:46:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:47,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 4064 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:46:47,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:46:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 436 proven. 72 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2021-11-13 02:46:48,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:46:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2021-11-13 02:46:50,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:46:50,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245118541] [2021-11-13 02:46:50,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245118541] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:46:50,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [555070278] [2021-11-13 02:46:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:50,509 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:46:50,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:46:50,509 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:46:50,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2021-11-13 02:46:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:53,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 4064 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:46:53,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:46:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 436 proven. 72 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2021-11-13 02:46:54,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:46:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2021-11-13 02:46:55,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [555070278] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:46:55,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39378348] [2021-11-13 02:46:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:55,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:46:55,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:46:55,867 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:46:55,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-13 02:46:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:59,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 4064 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:46:59,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2021-11-13 02:47:01,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-11-13 02:47:02,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39378348] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:47:02,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 02:47:02,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 10, 10, 10, 6] total 24 [2021-11-13 02:47:02,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486514938] [2021-11-13 02:47:02,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:47:02,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:47:02,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:47:02,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:47:02,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:47:02,767 INFO L87 Difference]: Start difference. First operand 5717 states and 7314 transitions. Second operand has 6 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 3 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-13 02:47:05,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:47:07,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:47:08,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:47:08,218 INFO L93 Difference]: Finished difference Result 6362 states and 8108 transitions. [2021-11-13 02:47:08,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:47:08,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 3 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 534 [2021-11-13 02:47:08,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:47:08,232 INFO L225 Difference]: With dead ends: 6362 [2021-11-13 02:47:08,232 INFO L226 Difference]: Without dead ends: 5832 [2021-11-13 02:47:08,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3199 GetRequests, 3176 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2021-11-13 02:47:08,236 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 66 mSDsluCounter, 6266 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4564.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 7872 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4635.57ms IncrementalHoareTripleChecker+Time [2021-11-13 02:47:08,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 7872 Invalid, 176 Unknown, 0 Unchecked, 10.10ms Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 2 Unknown, 0 Unchecked, 4635.57ms Time] [2021-11-13 02:47:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5832 states. [2021-11-13 02:47:08,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5832 to 5717. [2021-11-13 02:47:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5717 states, 3861 states have (on average 1.1535871535871536) internal successors, (4454), 3907 states have internal predecessors, (4454), 1367 states have call successors, (1367), 467 states have call predecessors, (1367), 482 states have return successors, (1491), 1372 states have call predecessors, (1491), 1363 states have call successors, (1491) [2021-11-13 02:47:08,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 7312 transitions. [2021-11-13 02:47:08,965 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 7312 transitions. Word has length 534 [2021-11-13 02:47:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:47:08,966 INFO L470 AbstractCegarLoop]: Abstraction has 5717 states and 7312 transitions. [2021-11-13 02:47:08,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 3 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-13 02:47:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 7312 transitions. [2021-11-13 02:47:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-11-13 02:47:08,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:47:08,970 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 9, 9, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:47:08,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (60)] Forceful destruction successful, exit code 0 [2021-11-13 02:47:09,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-11-13 02:47:09,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-11-13 02:47:09,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:47:09,570 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:47:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:47:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash 877441287, now seen corresponding path program 1 times [2021-11-13 02:47:09,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:47:09,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533946026] [2021-11-13 02:47:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:47:09,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:47:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:47:09,577 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:47:09,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-11-13 02:47:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:47:17,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 3725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:47:17,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 418 proven. 72 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2021-11-13 02:47:19,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2021-11-13 02:47:20,859 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:47:20,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533946026] [2021-11-13 02:47:20,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533946026] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:47:20,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1894690740] [2021-11-13 02:47:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:47:20,860 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:47:20,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:47:20,876 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:47:20,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2021-11-13 02:47:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:47:23,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 3725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:47:23,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 418 proven. 72 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2021-11-13 02:47:24,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2021-11-13 02:47:25,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1894690740] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:47:25,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866882815] [2021-11-13 02:47:25,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:47:25,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:47:25,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:47:25,915 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:47:25,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-13 02:47:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:47:29,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 3725 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:47:29,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2021-11-13 02:47:31,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 1181 trivial. 0 not checked. [2021-11-13 02:47:32,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866882815] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:47:32,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 02:47:32,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 10, 10, 10, 6] total 24 [2021-11-13 02:47:32,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879338700] [2021-11-13 02:47:32,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:47:32,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:47:32,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:47:32,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:47:32,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:47:32,658 INFO L87 Difference]: Start difference. First operand 5717 states and 7312 transitions. Second operand has 6 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 3 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-13 02:47:34,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:47:34,376 INFO L93 Difference]: Finished difference Result 11272 states and 14433 transitions. [2021-11-13 02:47:34,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:47:34,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 3 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 469 [2021-11-13 02:47:34,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:47:34,390 INFO L225 Difference]: With dead ends: 11272 [2021-11-13 02:47:34,390 INFO L226 Difference]: Without dead ends: 5827 [2021-11-13 02:47:34,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2809 GetRequests, 2786 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2021-11-13 02:47:34,399 INFO L933 BasicCegarLoop]: 1484 mSDtfsCounter, 296 mSDsluCounter, 5519 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 802.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 7003 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 857.05ms IncrementalHoareTripleChecker+Time [2021-11-13 02:47:34,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 7003 Invalid, 169 Unknown, 0 Unchecked, 9.03ms Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 857.05ms Time] [2021-11-13 02:47:34,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2021-11-13 02:47:35,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5717. [2021-11-13 02:47:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5717 states, 3861 states have (on average 1.1533281533281534) internal successors, (4453), 3907 states have internal predecessors, (4453), 1367 states have call successors, (1367), 467 states have call predecessors, (1367), 482 states have return successors, (1491), 1372 states have call predecessors, (1491), 1363 states have call successors, (1491) [2021-11-13 02:47:35,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 7311 transitions. [2021-11-13 02:47:35,129 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 7311 transitions. Word has length 469 [2021-11-13 02:47:35,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:47:35,129 INFO L470 AbstractCegarLoop]: Abstraction has 5717 states and 7311 transitions. [2021-11-13 02:47:35,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 3 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-13 02:47:35,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 7311 transitions. [2021-11-13 02:47:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2021-11-13 02:47:35,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:47:35,133 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 10, 10, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:47:35,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-11-13 02:47:35,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-11-13 02:47:35,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2021-11-13 02:47:35,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:47:35,734 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:47:35,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:47:35,735 INFO L85 PathProgramCache]: Analyzing trace with hash 588562438, now seen corresponding path program 1 times [2021-11-13 02:47:35,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:47:35,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943987931] [2021-11-13 02:47:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:47:35,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:47:35,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:47:35,741 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:47:35,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-11-13 02:47:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:47:45,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 3995 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:47:45,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 466 proven. 72 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2021-11-13 02:47:47,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 3 proven. 72 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2021-11-13 02:47:48,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:47:48,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943987931] [2021-11-13 02:47:48,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943987931] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:47:48,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [558743027] [2021-11-13 02:47:48,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:47:48,879 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:47:48,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:47:48,880 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:47:48,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2021-11-13 02:47:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:47:51,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 3995 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:47:51,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 466 proven. 72 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2021-11-13 02:47:53,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 3 proven. 72 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2021-11-13 02:47:54,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [558743027] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:47:54,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100305020] [2021-11-13 02:47:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:47:54,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:47:54,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:47:54,495 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:47:54,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-13 02:47:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:47:58,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 3995 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:47:58,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 511 proven. 0 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2021-11-13 02:47:59,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:48:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2021-11-13 02:48:01,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100305020] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:48:01,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 02:48:01,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 10, 10, 10, 6] total 24 [2021-11-13 02:48:01,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903348373] [2021-11-13 02:48:01,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:48:01,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:48:01,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:48:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:48:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-11-13 02:48:01,537 INFO L87 Difference]: Start difference. First operand 5717 states and 7311 transitions. Second operand has 6 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-13 02:48:02,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:48:02,992 INFO L93 Difference]: Finished difference Result 6351 states and 8088 transitions. [2021-11-13 02:48:02,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:48:02,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 541 [2021-11-13 02:48:02,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:48:03,007 INFO L225 Difference]: With dead ends: 6351 [2021-11-13 02:48:03,007 INFO L226 Difference]: Without dead ends: 5719 [2021-11-13 02:48:03,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3241 GetRequests, 3218 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2021-11-13 02:48:03,011 INFO L933 BasicCegarLoop]: 1432 mSDtfsCounter, 9 mSDsluCounter, 5686 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 599.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 7118 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 643.51ms IncrementalHoareTripleChecker+Time [2021-11-13 02:48:03,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 7118 Invalid, 174 Unknown, 0 Unchecked, 9.74ms Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 643.51ms Time] [2021-11-13 02:48:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5719 states. [2021-11-13 02:48:03,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5719 to 5717. [2021-11-13 02:48:03,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5717 states, 3861 states have (on average 1.1528101528101529) internal successors, (4451), 3907 states have internal predecessors, (4451), 1367 states have call successors, (1367), 467 states have call predecessors, (1367), 482 states have return successors, (1491), 1372 states have call predecessors, (1491), 1363 states have call successors, (1491) [2021-11-13 02:48:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 7309 transitions. [2021-11-13 02:48:03,782 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 7309 transitions. Word has length 541 [2021-11-13 02:48:03,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:48:03,783 INFO L470 AbstractCegarLoop]: Abstraction has 5717 states and 7309 transitions. [2021-11-13 02:48:03,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 3 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-13 02:48:03,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 7309 transitions. [2021-11-13 02:48:03,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-11-13 02:48:03,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:48:03,790 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 9, 9, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:48:03,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (66)] Forceful destruction successful, exit code 0 [2021-11-13 02:48:04,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-11-13 02:48:04,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-11-13 02:48:04,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:48:04,413 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-13 02:48:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:48:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1659898871, now seen corresponding path program 1 times [2021-11-13 02:48:04,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:48:04,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553570080] [2021-11-13 02:48:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:48:04,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:48:04,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:48:04,421 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:48:04,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-11-13 02:48:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:48:13,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 3725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:48:13,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:48:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 418 proven. 72 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2021-11-13 02:48:14,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:48:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2021-11-13 02:48:16,568 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:48:16,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553570080] [2021-11-13 02:48:16,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553570080] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:48:16,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [862885879] [2021-11-13 02:48:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:48:16,569 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:48:16,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:48:16,570 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:48:16,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (69)] Waiting until timeout for monitored process [2021-11-13 02:48:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:48:19,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 3725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:48:19,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:48:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 418 proven. 72 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2021-11-13 02:48:20,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:48:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2021-11-13 02:48:22,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [862885879] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:48:22,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871105834] [2021-11-13 02:48:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:48:22,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:48:22,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:48:22,001 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:48:22,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3af61ef-89d0-4a26-ae5f-352a9b60b818/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-11-13 02:48:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:48:26,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 3725 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 02:48:26,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:48:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 14 proven. 348 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-11-13 02:48:30,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:48:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2021-11-13 02:48:34,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871105834] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:48:34,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:48:34,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 11] total 36 [2021-11-13 02:48:34,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221216420] [2021-11-13 02:48:34,929 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:48:34,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-13 02:48:34,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:48:34,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-13 02:48:34,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1092, Unknown=0, NotChecked=0, Total=1260 [2021-11-13 02:48:34,932 INFO L87 Difference]: Start difference. First operand 5717 states and 7309 transitions. Second operand has 36 states, 36 states have (on average 14.027777777777779) internal successors, (505), 36 states have internal predecessors, (505), 10 states have call successors, (169), 8 states have call predecessors, (169), 8 states have return successors, (163), 10 states have call predecessors, (163), 10 states have call successors, (163) [2021-11-13 02:48:37,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:48:39,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:48:41,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:48:43,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:48:45,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:48:47,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:49:03,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:49:05,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:49:07,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []