./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V --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 e43d327fd5285ee9795a48a69e4937bd1e92d15521fc1385d692744b7cf677e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:41:29,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:41:29,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:41:29,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:41:29,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:41:29,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:41:29,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:41:29,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:41:29,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:41:29,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:41:29,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:41:29,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:41:29,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:41:29,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:41:29,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:41:29,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:41:29,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:41:29,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:41:29,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:41:29,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:41:29,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:41:29,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:41:29,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:41:29,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:41:29,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:41:29,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:41:29,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:41:29,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:41:29,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:41:29,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:41:29,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:41:29,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:41:29,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:41:29,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:41:29,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:41:29,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:41:29,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:41:29,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:41:29,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:41:29,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:41:29,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:41:29,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:41:29,979 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:41:29,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:41:29,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:41:29,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:41:29,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:41:29,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:41:29,982 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:41:29,982 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:41:29,983 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:41:29,983 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:41:29,983 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:41:29,984 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:41:29,984 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:41:29,984 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:41:29,984 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:41:29,985 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:41:29,985 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:41:29,985 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:41:29,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:41:29,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:41:29,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:41:29,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:41:29,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:41:29,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:41:29,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:41:29,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:41:29,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:41:29,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:41:29,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:41:29,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:41:29,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:41:29,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:41:29,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:41:29,995 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:41:29,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:41:29,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:41:29,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:41:29,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:41:29,996 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_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e43d327fd5285ee9795a48a69e4937bd1e92d15521fc1385d692744b7cf677e0 [2021-11-23 02:41:30,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:41:30,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:41:30,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:41:30,364 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:41:30,365 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:41:30,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i [2021-11-23 02:41:30,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/data/f8391ab3e/ed0bf05afba840bbb3a6dc2444bd2bd5/FLAG6142c3c3c [2021-11-23 02:41:31,504 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:41:31,506 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i [2021-11-23 02:41:31,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/data/f8391ab3e/ed0bf05afba840bbb3a6dc2444bd2bd5/FLAG6142c3c3c [2021-11-23 02:41:31,836 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/data/f8391ab3e/ed0bf05afba840bbb3a6dc2444bd2bd5 [2021-11-23 02:41:31,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:41:31,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:41:31,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:41:31,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:41:31,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:41:31,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:31" (1/1) ... [2021-11-23 02:41:31,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e395373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:31, skipping insertion in model container [2021-11-23 02:41:31,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:41:31" (1/1) ... [2021-11-23 02:41:31,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:41:32,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:41:35,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281249,281262] [2021-11-23 02:41:35,625 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281394,281407] [2021-11-23 02:41:35,626 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281540,281553] [2021-11-23 02:41:35,627 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281705,281718] [2021-11-23 02:41:35,628 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281863,281876] [2021-11-23 02:41:35,628 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282021,282034] [2021-11-23 02:41:35,629 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282179,282192] [2021-11-23 02:41:35,630 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282339,282352] [2021-11-23 02:41:35,630 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282498,282511] [2021-11-23 02:41:35,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282637,282650] [2021-11-23 02:41:35,632 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282779,282792] [2021-11-23 02:41:35,633 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282928,282941] [2021-11-23 02:41:35,633 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283067,283080] [2021-11-23 02:41:35,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283222,283235] [2021-11-23 02:41:35,635 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283382,283395] [2021-11-23 02:41:35,635 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283533,283546] [2021-11-23 02:41:35,636 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283684,283697] [2021-11-23 02:41:35,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283836,283849] [2021-11-23 02:41:35,637 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283985,283998] [2021-11-23 02:41:35,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284133,284146] [2021-11-23 02:41:35,639 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284290,284303] [2021-11-23 02:41:35,639 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284439,284452] [2021-11-23 02:41:35,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284595,284608] [2021-11-23 02:41:35,641 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284748,284761] [2021-11-23 02:41:35,641 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284894,284907] [2021-11-23 02:41:35,642 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285037,285050] [2021-11-23 02:41:35,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285189,285202] [2021-11-23 02:41:35,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285335,285348] [2021-11-23 02:41:35,644 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285480,285493] [2021-11-23 02:41:35,645 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285634,285647] [2021-11-23 02:41:35,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285785,285798] [2021-11-23 02:41:35,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285940,285953] [2021-11-23 02:41:35,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286092,286105] [2021-11-23 02:41:35,648 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286247,286260] [2021-11-23 02:41:35,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286411,286424] [2021-11-23 02:41:35,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286567,286580] [2021-11-23 02:41:35,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286731,286744] [2021-11-23 02:41:35,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286873,286886] [2021-11-23 02:41:35,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287031,287044] [2021-11-23 02:41:35,652 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287198,287211] [2021-11-23 02:41:35,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287357,287370] [2021-11-23 02:41:35,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287516,287529] [2021-11-23 02:41:35,654 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287665,287678] [2021-11-23 02:41:35,655 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287812,287825] [2021-11-23 02:41:35,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287951,287964] [2021-11-23 02:41:35,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288114,288127] [2021-11-23 02:41:35,657 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288280,288293] [2021-11-23 02:41:35,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288444,288457] [2021-11-23 02:41:35,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288609,288622] [2021-11-23 02:41:35,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288774,288787] [2021-11-23 02:41:35,660 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288940,288953] [2021-11-23 02:41:35,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289105,289118] [2021-11-23 02:41:35,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289272,289285] [2021-11-23 02:41:35,662 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289432,289445] [2021-11-23 02:41:35,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289594,289607] [2021-11-23 02:41:35,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289753,289766] [2021-11-23 02:41:35,664 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289899,289912] [2021-11-23 02:41:35,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290042,290055] [2021-11-23 02:41:35,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290186,290199] [2021-11-23 02:41:35,666 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290329,290342] [2021-11-23 02:41:35,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290473,290486] [2021-11-23 02:41:35,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290614,290627] [2021-11-23 02:41:35,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290752,290765] [2021-11-23 02:41:35,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290910,290923] [2021-11-23 02:41:35,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291069,291082] [2021-11-23 02:41:35,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291225,291238] [2021-11-23 02:41:35,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291374,291387] [2021-11-23 02:41:35,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291526,291539] [2021-11-23 02:41:35,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291677,291690] [2021-11-23 02:41:35,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291826,291839] [2021-11-23 02:41:35,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291978,291991] [2021-11-23 02:41:35,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292126,292139] [2021-11-23 02:41:35,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292279,292292] [2021-11-23 02:41:35,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292430,292443] [2021-11-23 02:41:35,677 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292580,292593] [2021-11-23 02:41:35,678 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292727,292740] [2021-11-23 02:41:35,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292878,292891] [2021-11-23 02:41:35,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293029,293042] [2021-11-23 02:41:35,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293177,293190] [2021-11-23 02:41:35,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293343,293356] [2021-11-23 02:41:35,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293512,293525] [2021-11-23 02:41:35,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293679,293692] [2021-11-23 02:41:35,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293847,293860] [2021-11-23 02:41:35,683 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293997,294010] [2021-11-23 02:41:35,683 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294144,294157] [2021-11-23 02:41:35,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294305,294318] [2021-11-23 02:41:35,685 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294475,294488] [2021-11-23 02:41:35,685 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294637,294650] [2021-11-23 02:41:35,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:41:35,730 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:41:36,035 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281249,281262] [2021-11-23 02:41:36,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281394,281407] [2021-11-23 02:41:36,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281540,281553] [2021-11-23 02:41:36,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281705,281718] [2021-11-23 02:41:36,038 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[281863,281876] [2021-11-23 02:41:36,038 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282021,282034] [2021-11-23 02:41:36,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282179,282192] [2021-11-23 02:41:36,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282339,282352] [2021-11-23 02:41:36,040 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282498,282511] [2021-11-23 02:41:36,040 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282637,282650] [2021-11-23 02:41:36,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282779,282792] [2021-11-23 02:41:36,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[282928,282941] [2021-11-23 02:41:36,042 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283067,283080] [2021-11-23 02:41:36,043 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283222,283235] [2021-11-23 02:41:36,043 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283382,283395] [2021-11-23 02:41:36,044 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283533,283546] [2021-11-23 02:41:36,044 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283684,283697] [2021-11-23 02:41:36,045 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283836,283849] [2021-11-23 02:41:36,045 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[283985,283998] [2021-11-23 02:41:36,046 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284133,284146] [2021-11-23 02:41:36,046 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284290,284303] [2021-11-23 02:41:36,047 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284439,284452] [2021-11-23 02:41:36,047 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284595,284608] [2021-11-23 02:41:36,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284748,284761] [2021-11-23 02:41:36,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[284894,284907] [2021-11-23 02:41:36,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285037,285050] [2021-11-23 02:41:36,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285189,285202] [2021-11-23 02:41:36,050 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285335,285348] [2021-11-23 02:41:36,050 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285480,285493] [2021-11-23 02:41:36,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285634,285647] [2021-11-23 02:41:36,052 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285785,285798] [2021-11-23 02:41:36,052 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[285940,285953] [2021-11-23 02:41:36,053 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286092,286105] [2021-11-23 02:41:36,053 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286247,286260] [2021-11-23 02:41:36,054 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286411,286424] [2021-11-23 02:41:36,054 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286567,286580] [2021-11-23 02:41:36,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286731,286744] [2021-11-23 02:41:36,056 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[286873,286886] [2021-11-23 02:41:36,056 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287031,287044] [2021-11-23 02:41:36,057 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287198,287211] [2021-11-23 02:41:36,057 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287357,287370] [2021-11-23 02:41:36,058 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287516,287529] [2021-11-23 02:41:36,058 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287665,287678] [2021-11-23 02:41:36,059 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287812,287825] [2021-11-23 02:41:36,059 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[287951,287964] [2021-11-23 02:41:36,060 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288114,288127] [2021-11-23 02:41:36,064 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288280,288293] [2021-11-23 02:41:36,065 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288444,288457] [2021-11-23 02:41:36,065 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288609,288622] [2021-11-23 02:41:36,066 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288774,288787] [2021-11-23 02:41:36,066 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[288940,288953] [2021-11-23 02:41:36,067 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289105,289118] [2021-11-23 02:41:36,067 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289272,289285] [2021-11-23 02:41:36,068 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289432,289445] [2021-11-23 02:41:36,069 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289594,289607] [2021-11-23 02:41:36,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289753,289766] [2021-11-23 02:41:36,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[289899,289912] [2021-11-23 02:41:36,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290042,290055] [2021-11-23 02:41:36,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290186,290199] [2021-11-23 02:41:36,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290329,290342] [2021-11-23 02:41:36,117 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290473,290486] [2021-11-23 02:41:36,117 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290614,290627] [2021-11-23 02:41:36,118 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290752,290765] [2021-11-23 02:41:36,118 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[290910,290923] [2021-11-23 02:41:36,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291069,291082] [2021-11-23 02:41:36,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291225,291238] [2021-11-23 02:41:36,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291374,291387] [2021-11-23 02:41:36,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291526,291539] [2021-11-23 02:41:36,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291677,291690] [2021-11-23 02:41:36,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291826,291839] [2021-11-23 02:41:36,121 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[291978,291991] [2021-11-23 02:41:36,121 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292126,292139] [2021-11-23 02:41:36,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292279,292292] [2021-11-23 02:41:36,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292430,292443] [2021-11-23 02:41:36,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292580,292593] [2021-11-23 02:41:36,123 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292727,292740] [2021-11-23 02:41:36,123 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[292878,292891] [2021-11-23 02:41:36,128 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293029,293042] [2021-11-23 02:41:36,130 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293177,293190] [2021-11-23 02:41:36,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293343,293356] [2021-11-23 02:41:36,132 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293512,293525] [2021-11-23 02:41:36,133 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293679,293692] [2021-11-23 02:41:36,134 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293847,293860] [2021-11-23 02:41:36,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[293997,294010] [2021-11-23 02:41:36,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294144,294157] [2021-11-23 02:41:36,136 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294305,294318] [2021-11-23 02:41:36,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294475,294488] [2021-11-23 02:41:36,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i[294637,294650] [2021-11-23 02:41:36,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:41:36,404 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:41:36,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:36 WrapperNode [2021-11-23 02:41:36,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:41:36,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:41:36,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:41:36,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:41:36,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:36" (1/1) ... [2021-11-23 02:41:36,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:36" (1/1) ... [2021-11-23 02:41:36,728 INFO L137 Inliner]: procedures = 544, calls = 1509, calls flagged for inlining = 233, calls inlined = 144, statements flattened = 2948 [2021-11-23 02:41:36,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:41:36,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:41:36,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:41:36,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:41:36,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:36" (1/1) ... [2021-11-23 02:41:36,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:36" (1/1) ... [2021-11-23 02:41:36,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:36" (1/1) ... [2021-11-23 02:41:36,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:36" (1/1) ... [2021-11-23 02:41:36,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:36" (1/1) ... [2021-11-23 02:41:36,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:36" (1/1) ... [2021-11-23 02:41:37,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:36" (1/1) ... [2021-11-23 02:41:37,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:41:37,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:41:37,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:41:37,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:41:37,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:36" (1/1) ... [2021-11-23 02:41:37,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:41:37,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:41:37,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:41:37,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:41:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 02:41:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 02:41:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2021-11-23 02:41:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2021-11-23 02:41:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:41:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:41:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-11-23 02:41:37,169 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-11-23 02:41:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:41:37,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:41:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-23 02:41:37,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-23 02:41:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-23 02:41:37,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-23 02:41:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2021-11-23 02:41:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2021-11-23 02:41:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2021-11-23 02:41:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2021-11-23 02:41:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_mutex [2021-11-23 02:41:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_mutex [2021-11-23 02:41:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_report [2021-11-23 02:41:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_report [2021-11-23 02:41:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:41:37,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:41:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:41:37,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:41:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2021-11-23 02:41:37,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2021-11-23 02:41:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:41:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:41:37,172 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:41:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2021-11-23 02:41:37,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2021-11-23 02:41:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-23 02:41:37,172 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-23 02:41:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:41:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-23 02:41:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-23 02:41:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:41:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2021-11-23 02:41:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2021-11-23 02:41:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:41:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:41:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-23 02:41:37,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-23 02:41:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:41:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2021-11-23 02:41:37,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2021-11-23 02:41:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-23 02:41:37,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-23 02:41:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:41:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:41:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2021-11-23 02:41:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2021-11-23 02:41:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-23 02:41:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-23 02:41:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 02:41:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 02:41:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-11-23 02:41:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-11-23 02:41:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2021-11-23 02:41:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2021-11-23 02:41:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-23 02:41:37,177 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-23 02:41:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-23 02:41:37,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-23 02:41:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:41:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:41:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:41:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:41:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:41:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-23 02:41:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-23 02:41:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:41:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:41:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-23 02:41:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-23 02:41:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_irq_check_alloc_flags [2021-11-23 02:41:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_irq_check_alloc_flags [2021-11-23 02:41:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2021-11-23 02:41:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2021-11-23 02:41:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-23 02:41:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-23 02:41:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-11-23 02:41:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-11-23 02:41:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-23 02:41:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-23 02:41:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:41:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:41:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_mutex_of_iowarrior [2021-11-23 02:41:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_mutex_of_iowarrior [2021-11-23 02:41:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-23 02:41:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-23 02:41:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:41:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:41:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:41:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:41:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_disconnect [2021-11-23 02:41:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_disconnect [2021-11-23 02:41:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:41:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:41:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:41:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:41:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2021-11-23 02:41:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2021-11-23 02:41:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_free_urb [2021-11-23 02:41:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_free_urb [2021-11-23 02:41:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_delete [2021-11-23 02:41:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_delete [2021-11-23 02:41:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2021-11-23 02:41:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2021-11-23 02:41:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2021-11-23 02:41:37,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2021-11-23 02:41:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:41:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:41:37,197 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:41:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-23 02:41:37,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-23 02:41:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:41:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_mutex [2021-11-23 02:41:37,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_mutex [2021-11-23 02:41:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_usb_free_coherent [2021-11-23 02:41:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_usb_free_coherent [2021-11-23 02:41:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:41:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-23 02:41:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-23 02:41:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:41:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:41:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-23 02:41:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-23 02:41:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-23 02:41:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-23 02:41:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure read_index [2021-11-23 02:41:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure read_index [2021-11-23 02:41:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:41:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:41:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:41:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:41:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_open_disc_lock [2021-11-23 02:41:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_iowarrior_open_disc_lock [2021-11-23 02:41:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2021-11-23 02:41:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2021-11-23 02:41:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_alloc_urb [2021-11-23 02:41:37,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_alloc_urb [2021-11-23 02:41:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-23 02:41:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-23 02:41:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_iowarrior [2021-11-23 02:41:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_mutex_of_iowarrior [2021-11-23 02:41:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 02:41:37,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-23 02:41:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2021-11-23 02:41:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2021-11-23 02:41:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-23 02:41:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-23 02:41:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-23 02:41:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-23 02:41:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-11-23 02:41:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-11-23 02:41:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:41:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:41:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 02:41:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-23 02:41:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:41:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-23 02:41:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-23 02:41:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:41:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:41:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-23 02:41:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-23 02:41:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_open_disc_lock [2021-11-23 02:41:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_iowarrior_open_disc_lock [2021-11-23 02:41:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-23 02:41:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-23 02:41:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 02:41:37,205 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 02:41:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 02:41:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 02:41:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:41:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:41:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-23 02:41:37,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-23 02:41:37,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:41:38,026 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:41:38,032 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:41:38,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:41:41,075 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:41:41,525 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:41:41,526 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:41:41,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:41 BoogieIcfgContainer [2021-11-23 02:41:41,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:41:41,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:41:41,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:41:41,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:41:41,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:41:31" (1/3) ... [2021-11-23 02:41:41,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8262201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:41, skipping insertion in model container [2021-11-23 02:41:41,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:41:36" (2/3) ... [2021-11-23 02:41:41,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8262201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:41, skipping insertion in model container [2021-11-23 02:41:41,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:41" (3/3) ... [2021-11-23 02:41:41,552 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--usb--misc--iowarrior.ko.cil.i [2021-11-23 02:41:41,559 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:41:41,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-23 02:41:41,624 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:41:41,632 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 [2021-11-23 02:41:41,632 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-23 02:41:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 895 states, 499 states have (on average 1.3226452905811623) internal successors, (660), 547 states have internal predecessors, (660), 284 states have call successors, (284), 83 states have call predecessors, (284), 82 states have return successors, (279), 274 states have call predecessors, (279), 279 states have call successors, (279) [2021-11-23 02:41:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 02:41:41,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:41,691 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:41,694 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)] === [2021-11-23 02:41:41,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:41,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1467610978, now seen corresponding path program 1 times [2021-11-23 02:41:41,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:41,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916761235] [2021-11-23 02:41:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:41,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:41:42,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:42,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916761235] [2021-11-23 02:41:42,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916761235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:42,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:42,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:42,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731308607] [2021-11-23 02:41:42,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:42,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:42,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:42,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:42,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:42,641 INFO L87 Difference]: Start difference. First operand has 895 states, 499 states have (on average 1.3226452905811623) internal successors, (660), 547 states have internal predecessors, (660), 284 states have call successors, (284), 83 states have call predecessors, (284), 82 states have return successors, (279), 274 states have call predecessors, (279), 279 states have call successors, (279) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 02:41:43,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:43,899 INFO L93 Difference]: Finished difference Result 1751 states and 2484 transitions. [2021-11-23 02:41:43,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:43,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 51 [2021-11-23 02:41:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:43,928 INFO L225 Difference]: With dead ends: 1751 [2021-11-23 02:41:43,928 INFO L226 Difference]: Without dead ends: 880 [2021-11-23 02:41:43,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:43,949 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 1169 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:43,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 2094 Invalid, 285 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:41:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-11-23 02:41:44,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2021-11-23 02:41:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 492 states have (on average 1.2560975609756098) internal successors, (618), 535 states have internal predecessors, (618), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-23 02:41:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1174 transitions. [2021-11-23 02:41:44,110 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1174 transitions. Word has length 51 [2021-11-23 02:41:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:44,112 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1174 transitions. [2021-11-23 02:41:44,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 02:41:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1174 transitions. [2021-11-23 02:41:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 02:41:44,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:44,117 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:44,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:41:44,117 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:41:44,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1841791657, now seen corresponding path program 1 times [2021-11-23 02:41:44,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:44,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339247105] [2021-11-23 02:41:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:44,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:41:44,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:44,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339247105] [2021-11-23 02:41:44,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339247105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:44,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:44,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:44,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460278674] [2021-11-23 02:41:44,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:44,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:44,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:44,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:44,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:44,336 INFO L87 Difference]: Start difference. First operand 880 states and 1174 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 02:41:45,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:45,519 INFO L93 Difference]: Finished difference Result 880 states and 1174 transitions. [2021-11-23 02:41:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:45,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 56 [2021-11-23 02:41:45,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:45,529 INFO L225 Difference]: With dead ends: 880 [2021-11-23 02:41:45,529 INFO L226 Difference]: Without dead ends: 878 [2021-11-23 02:41:45,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:45,531 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 1149 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:45,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 2058 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 02:41:45,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-11-23 02:41:45,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2021-11-23 02:41:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 491 states have (on average 1.2545824847250509) internal successors, (616), 533 states have internal predecessors, (616), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-23 02:41:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1172 transitions. [2021-11-23 02:41:45,671 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1172 transitions. Word has length 56 [2021-11-23 02:41:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:45,672 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1172 transitions. [2021-11-23 02:41:45,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 02:41:45,672 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1172 transitions. [2021-11-23 02:41:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 02:41:45,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:45,684 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:45,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:41:45,685 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:41:45,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:45,686 INFO L85 PathProgramCache]: Analyzing trace with hash 473081267, now seen corresponding path program 1 times [2021-11-23 02:41:45,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:45,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369243459] [2021-11-23 02:41:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:45,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:41:45,932 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:45,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369243459] [2021-11-23 02:41:45,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369243459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:45,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:45,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:45,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766633330] [2021-11-23 02:41:45,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:45,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:45,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:45,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:45,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:45,936 INFO L87 Difference]: Start difference. First operand 878 states and 1172 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:41:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:47,044 INFO L93 Difference]: Finished difference Result 878 states and 1172 transitions. [2021-11-23 02:41:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:47,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2021-11-23 02:41:47,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:47,053 INFO L225 Difference]: With dead ends: 878 [2021-11-23 02:41:47,053 INFO L226 Difference]: Without dead ends: 876 [2021-11-23 02:41:47,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:47,055 INFO L933 BasicCegarLoop]: 1027 mSDtfsCounter, 1146 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:47,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1148 Valid, 2054 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:41:47,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-11-23 02:41:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2021-11-23 02:41:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 490 states have (on average 1.2530612244897958) internal successors, (614), 531 states have internal predecessors, (614), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-23 02:41:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1170 transitions. [2021-11-23 02:41:47,118 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1170 transitions. Word has length 61 [2021-11-23 02:41:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:47,119 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1170 transitions. [2021-11-23 02:41:47,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:41:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1170 transitions. [2021-11-23 02:41:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 02:41:47,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:47,123 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:47,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:41:47,123 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:41:47,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:47,124 INFO L85 PathProgramCache]: Analyzing trace with hash 37160990, now seen corresponding path program 1 times [2021-11-23 02:41:47,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:47,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398168441] [2021-11-23 02:41:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:47,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:41:47,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:47,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398168441] [2021-11-23 02:41:47,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398168441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:47,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:47,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:47,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474364823] [2021-11-23 02:41:47,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:47,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:47,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:47,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:47,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:47,345 INFO L87 Difference]: Start difference. First operand 876 states and 1170 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:41:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:48,475 INFO L93 Difference]: Finished difference Result 876 states and 1170 transitions. [2021-11-23 02:41:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:48,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2021-11-23 02:41:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:48,485 INFO L225 Difference]: With dead ends: 876 [2021-11-23 02:41:48,486 INFO L226 Difference]: Without dead ends: 874 [2021-11-23 02:41:48,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:48,488 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 1143 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:48,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 2050 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:41:48,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-11-23 02:41:48,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2021-11-23 02:41:48,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 489 states have (on average 1.2515337423312884) internal successors, (612), 529 states have internal predecessors, (612), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-23 02:41:48,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1168 transitions. [2021-11-23 02:41:48,589 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1168 transitions. Word has length 66 [2021-11-23 02:41:48,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:48,590 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1168 transitions. [2021-11-23 02:41:48,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 02:41:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1168 transitions. [2021-11-23 02:41:48,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:41:48,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:48,593 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:48,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:41:48,594 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:41:48,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:48,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1984902482, now seen corresponding path program 1 times [2021-11-23 02:41:48,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:48,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579880315] [2021-11-23 02:41:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:48,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:41:48,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:48,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579880315] [2021-11-23 02:41:48,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579880315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:48,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:48,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:48,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356026502] [2021-11-23 02:41:48,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:48,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:48,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:48,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:48,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:48,774 INFO L87 Difference]: Start difference. First operand 874 states and 1168 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:41:49,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:49,899 INFO L93 Difference]: Finished difference Result 874 states and 1168 transitions. [2021-11-23 02:41:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:49,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2021-11-23 02:41:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:49,911 INFO L225 Difference]: With dead ends: 874 [2021-11-23 02:41:49,911 INFO L226 Difference]: Without dead ends: 872 [2021-11-23 02:41:49,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:49,913 INFO L933 BasicCegarLoop]: 1023 mSDtfsCounter, 1140 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:49,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 2046 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:41:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-11-23 02:41:49,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2021-11-23 02:41:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 488 states have (on average 1.25) internal successors, (610), 527 states have internal predecessors, (610), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-23 02:41:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1166 transitions. [2021-11-23 02:41:50,002 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1166 transitions. Word has length 71 [2021-11-23 02:41:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:50,004 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 1166 transitions. [2021-11-23 02:41:50,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-23 02:41:50,004 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1166 transitions. [2021-11-23 02:41:50,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:41:50,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:50,006 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:50,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:41:50,007 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:41:50,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:50,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1288107428, now seen corresponding path program 1 times [2021-11-23 02:41:50,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:50,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760191568] [2021-11-23 02:41:50,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:50,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:41:50,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:50,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760191568] [2021-11-23 02:41:50,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760191568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:50,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:50,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:50,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850103660] [2021-11-23 02:41:50,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:50,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:50,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:50,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:50,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:50,172 INFO L87 Difference]: Start difference. First operand 872 states and 1166 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 02:41:51,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:51,190 INFO L93 Difference]: Finished difference Result 872 states and 1166 transitions. [2021-11-23 02:41:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:51,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2021-11-23 02:41:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:51,199 INFO L225 Difference]: With dead ends: 872 [2021-11-23 02:41:51,199 INFO L226 Difference]: Without dead ends: 870 [2021-11-23 02:41:51,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:51,201 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 1137 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:51,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 2042 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:41:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-11-23 02:41:51,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 870. [2021-11-23 02:41:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 487 states have (on average 1.2484599589322383) internal successors, (608), 525 states have internal predecessors, (608), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-23 02:41:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1164 transitions. [2021-11-23 02:41:51,282 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1164 transitions. Word has length 76 [2021-11-23 02:41:51,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:51,283 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 1164 transitions. [2021-11-23 02:41:51,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 02:41:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1164 transitions. [2021-11-23 02:41:51,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 02:41:51,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:51,286 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:51,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:41:51,286 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:41:51,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:51,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1482170354, now seen corresponding path program 1 times [2021-11-23 02:41:51,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:51,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774385246] [2021-11-23 02:41:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:51,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:41:51,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:51,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774385246] [2021-11-23 02:41:51,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774385246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:51,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:51,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:51,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087673042] [2021-11-23 02:41:51,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:51,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:51,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:51,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:51,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:51,458 INFO L87 Difference]: Start difference. First operand 870 states and 1164 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:41:52,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:52,425 INFO L93 Difference]: Finished difference Result 870 states and 1164 transitions. [2021-11-23 02:41:52,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:52,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 81 [2021-11-23 02:41:52,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:52,436 INFO L225 Difference]: With dead ends: 870 [2021-11-23 02:41:52,436 INFO L226 Difference]: Without dead ends: 868 [2021-11-23 02:41:52,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:52,438 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 1134 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:52,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 2038 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:41:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-11-23 02:41:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 868. [2021-11-23 02:41:52,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 486 states have (on average 1.2469135802469136) internal successors, (606), 523 states have internal predecessors, (606), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-23 02:41:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1162 transitions. [2021-11-23 02:41:52,512 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1162 transitions. Word has length 81 [2021-11-23 02:41:52,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:52,513 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1162 transitions. [2021-11-23 02:41:52,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:41:52,513 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1162 transitions. [2021-11-23 02:41:52,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 02:41:52,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:52,516 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:52,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:41:52,516 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:41:52,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:52,517 INFO L85 PathProgramCache]: Analyzing trace with hash 334242286, now seen corresponding path program 1 times [2021-11-23 02:41:52,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:52,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978831559] [2021-11-23 02:41:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:52,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:41:52,651 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:52,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978831559] [2021-11-23 02:41:52,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978831559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:52,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:52,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:52,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995819383] [2021-11-23 02:41:52,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:52,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:52,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:52,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:52,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:52,654 INFO L87 Difference]: Start difference. First operand 868 states and 1162 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:41:53,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:53,646 INFO L93 Difference]: Finished difference Result 868 states and 1162 transitions. [2021-11-23 02:41:53,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:53,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 86 [2021-11-23 02:41:53,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:53,666 INFO L225 Difference]: With dead ends: 868 [2021-11-23 02:41:53,666 INFO L226 Difference]: Without dead ends: 866 [2021-11-23 02:41:53,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:53,672 INFO L933 BasicCegarLoop]: 1017 mSDtfsCounter, 1135 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:53,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 2030 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:41:53,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-11-23 02:41:53,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2021-11-23 02:41:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 485 states have (on average 1.245360824742268) internal successors, (604), 521 states have internal predecessors, (604), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-23 02:41:53,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1160 transitions. [2021-11-23 02:41:53,756 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1160 transitions. Word has length 86 [2021-11-23 02:41:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:53,757 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 1160 transitions. [2021-11-23 02:41:53,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:41:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1160 transitions. [2021-11-23 02:41:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 02:41:53,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:53,761 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:53,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:41:53,762 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:41:53,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:53,762 INFO L85 PathProgramCache]: Analyzing trace with hash -915578671, now seen corresponding path program 1 times [2021-11-23 02:41:53,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:53,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365533479] [2021-11-23 02:41:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:53,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:41:53,927 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:53,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365533479] [2021-11-23 02:41:53,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365533479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:53,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:53,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:53,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256440135] [2021-11-23 02:41:53,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:53,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:53,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:53,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:53,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:53,931 INFO L87 Difference]: Start difference. First operand 866 states and 1160 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:41:54,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:54,991 INFO L93 Difference]: Finished difference Result 866 states and 1160 transitions. [2021-11-23 02:41:54,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:54,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 88 [2021-11-23 02:41:54,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:55,001 INFO L225 Difference]: With dead ends: 866 [2021-11-23 02:41:55,001 INFO L226 Difference]: Without dead ends: 864 [2021-11-23 02:41:55,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:55,003 INFO L933 BasicCegarLoop]: 1015 mSDtfsCounter, 1127 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:55,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 2030 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:41:55,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-11-23 02:41:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2021-11-23 02:41:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 484 states have (on average 1.243801652892562) internal successors, (602), 519 states have internal predecessors, (602), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-23 02:41:55,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1158 transitions. [2021-11-23 02:41:55,084 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1158 transitions. Word has length 88 [2021-11-23 02:41:55,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:55,085 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 1158 transitions. [2021-11-23 02:41:55,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:41:55,085 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1158 transitions. [2021-11-23 02:41:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 02:41:55,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:55,088 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:55,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:41:55,088 INFO L402 AbstractCegarLoop]: === Iteration 10 === 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)] === [2021-11-23 02:41:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:55,089 INFO L85 PathProgramCache]: Analyzing trace with hash -484997293, now seen corresponding path program 1 times [2021-11-23 02:41:55,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:55,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055677269] [2021-11-23 02:41:55,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:55,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:41:55,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:55,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055677269] [2021-11-23 02:41:55,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055677269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:55,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:55,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:55,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835443899] [2021-11-23 02:41:55,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:55,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:55,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:55,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:55,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:55,221 INFO L87 Difference]: Start difference. First operand 864 states and 1158 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:41:56,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:56,220 INFO L93 Difference]: Finished difference Result 864 states and 1158 transitions. [2021-11-23 02:41:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:56,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 93 [2021-11-23 02:41:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:56,229 INFO L225 Difference]: With dead ends: 864 [2021-11-23 02:41:56,229 INFO L226 Difference]: Without dead ends: 862 [2021-11-23 02:41:56,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:56,231 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 1126 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:56,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 2026 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:41:56,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-11-23 02:41:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2021-11-23 02:41:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 483 states have (on average 1.2422360248447204) internal successors, (600), 517 states have internal predecessors, (600), 279 states have call successors, (279), 82 states have call predecessors, (279), 81 states have return successors, (277), 272 states have call predecessors, (277), 277 states have call successors, (277) [2021-11-23 02:41:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1156 transitions. [2021-11-23 02:41:56,314 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1156 transitions. Word has length 93 [2021-11-23 02:41:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:56,315 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1156 transitions. [2021-11-23 02:41:56,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:41:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1156 transitions. [2021-11-23 02:41:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 02:41:56,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:56,318 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:56,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:41:56,318 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:41:56,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:56,319 INFO L85 PathProgramCache]: Analyzing trace with hash 20793332, now seen corresponding path program 1 times [2021-11-23 02:41:56,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:56,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622677925] [2021-11-23 02:41:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:56,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-23 02:41:56,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:56,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622677925] [2021-11-23 02:41:56,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622677925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:56,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:56,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:41:56,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630821834] [2021-11-23 02:41:56,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:56,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:41:56,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:56,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:41:56,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:56,499 INFO L87 Difference]: Start difference. First operand 862 states and 1156 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:41:57,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:57,888 INFO L93 Difference]: Finished difference Result 994 states and 1293 transitions. [2021-11-23 02:41:57,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:41:57,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 117 [2021-11-23 02:41:57,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:57,898 INFO L225 Difference]: With dead ends: 994 [2021-11-23 02:41:57,899 INFO L226 Difference]: Without dead ends: 992 [2021-11-23 02:41:57,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:41:57,901 INFO L933 BasicCegarLoop]: 1100 mSDtfsCounter, 1029 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3485 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:57,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 3485 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 02:41:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-11-23 02:41:57,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 984. [2021-11-23 02:41:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 553 states have (on average 1.2314647377938517) internal successors, (681), 587 states have internal predecessors, (681), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-23 02:41:58,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1287 transitions. [2021-11-23 02:41:58,003 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1287 transitions. Word has length 117 [2021-11-23 02:41:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:58,004 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1287 transitions. [2021-11-23 02:41:58,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:41:58,004 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1287 transitions. [2021-11-23 02:41:58,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-23 02:41:58,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:58,007 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:58,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:41:58,007 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)] === [2021-11-23 02:41:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1592725701, now seen corresponding path program 1 times [2021-11-23 02:41:58,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:58,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370573769] [2021-11-23 02:41:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:58,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:41:58,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:58,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370573769] [2021-11-23 02:41:58,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370573769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:58,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:58,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:41:58,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399118874] [2021-11-23 02:41:58,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:58,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:41:58,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:58,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:41:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:41:58,151 INFO L87 Difference]: Start difference. First operand 984 states and 1287 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:41:59,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:41:59,388 INFO L93 Difference]: Finished difference Result 984 states and 1287 transitions. [2021-11-23 02:41:59,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:41:59,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 98 [2021-11-23 02:41:59,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:41:59,398 INFO L225 Difference]: With dead ends: 984 [2021-11-23 02:41:59,399 INFO L226 Difference]: Without dead ends: 982 [2021-11-23 02:41:59,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:41:59,401 INFO L933 BasicCegarLoop]: 1011 mSDtfsCounter, 1123 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:41:59,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2022 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 02:41:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-11-23 02:41:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 982. [2021-11-23 02:41:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 552 states have (on average 1.230072463768116) internal successors, (679), 585 states have internal predecessors, (679), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-23 02:41:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1285 transitions. [2021-11-23 02:41:59,537 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1285 transitions. Word has length 98 [2021-11-23 02:41:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:41:59,538 INFO L470 AbstractCegarLoop]: Abstraction has 982 states and 1285 transitions. [2021-11-23 02:41:59,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:41:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1285 transitions. [2021-11-23 02:41:59,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 02:41:59,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:41:59,542 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:41:59,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:41:59,542 INFO L402 AbstractCegarLoop]: === Iteration 13 === 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)] === [2021-11-23 02:41:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:41:59,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1325805858, now seen corresponding path program 1 times [2021-11-23 02:41:59,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:41:59,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271184026] [2021-11-23 02:41:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:41:59,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:41:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:41:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-23 02:41:59,849 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:41:59,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271184026] [2021-11-23 02:41:59,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271184026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:41:59,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:41:59,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:41:59,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578112885] [2021-11-23 02:41:59,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:41:59,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:41:59,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:41:59,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:41:59,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:41:59,853 INFO L87 Difference]: Start difference. First operand 982 states and 1285 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:42:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:03,805 INFO L93 Difference]: Finished difference Result 982 states and 1285 transitions. [2021-11-23 02:42:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:42:03,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2021-11-23 02:42:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:03,816 INFO L225 Difference]: With dead ends: 982 [2021-11-23 02:42:03,816 INFO L226 Difference]: Without dead ends: 980 [2021-11-23 02:42:03,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:42:03,818 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 1114 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:03,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 3483 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-23 02:42:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2021-11-23 02:42:03,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2021-11-23 02:42:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 551 states have (on average 1.2268602540834845) internal successors, (676), 583 states have internal predecessors, (676), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-23 02:42:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1282 transitions. [2021-11-23 02:42:03,920 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1282 transitions. Word has length 131 [2021-11-23 02:42:03,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:03,921 INFO L470 AbstractCegarLoop]: Abstraction has 980 states and 1282 transitions. [2021-11-23 02:42:03,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:42:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1282 transitions. [2021-11-23 02:42:03,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 02:42:03,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:03,924 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:03,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 02:42:03,924 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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)] === [2021-11-23 02:42:03,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:03,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1534470055, now seen corresponding path program 1 times [2021-11-23 02:42:03,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:03,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632611979] [2021-11-23 02:42:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:03,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:42:04,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:04,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632611979] [2021-11-23 02:42:04,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632611979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:04,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:04,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:04,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034079179] [2021-11-23 02:42:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:04,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:04,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:04,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:04,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:04,057 INFO L87 Difference]: Start difference. First operand 980 states and 1282 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:42:05,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:05,098 INFO L93 Difference]: Finished difference Result 980 states and 1282 transitions. [2021-11-23 02:42:05,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:05,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 103 [2021-11-23 02:42:05,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:05,108 INFO L225 Difference]: With dead ends: 980 [2021-11-23 02:42:05,109 INFO L226 Difference]: Without dead ends: 978 [2021-11-23 02:42:05,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:05,111 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 1118 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:05,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 2014 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:42:05,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-11-23 02:42:05,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 978. [2021-11-23 02:42:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 550 states have (on average 1.2254545454545454) internal successors, (674), 581 states have internal predecessors, (674), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-23 02:42:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1280 transitions. [2021-11-23 02:42:05,245 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1280 transitions. Word has length 103 [2021-11-23 02:42:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:05,246 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1280 transitions. [2021-11-23 02:42:05,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:42:05,247 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1280 transitions. [2021-11-23 02:42:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 02:42:05,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:05,251 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:05,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 02:42:05,251 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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)] === [2021-11-23 02:42:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:05,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2114427257, now seen corresponding path program 1 times [2021-11-23 02:42:05,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:05,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839075704] [2021-11-23 02:42:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:05,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-23 02:42:05,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:05,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839075704] [2021-11-23 02:42:05,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839075704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:05,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:05,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:42:05,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010162999] [2021-11-23 02:42:05,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:05,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:05,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:05,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:05,481 INFO L87 Difference]: Start difference. First operand 978 states and 1280 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:42:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:06,150 INFO L93 Difference]: Finished difference Result 1917 states and 2515 transitions. [2021-11-23 02:42:06,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:06,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 137 [2021-11-23 02:42:06,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:06,161 INFO L225 Difference]: With dead ends: 1917 [2021-11-23 02:42:06,161 INFO L226 Difference]: Without dead ends: 972 [2021-11-23 02:42:06,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:06,170 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 1110 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:06,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 1003 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 02:42:06,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-11-23 02:42:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2021-11-23 02:42:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 545 states have (on average 1.2201834862385321) internal successors, (665), 575 states have internal predecessors, (665), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-23 02:42:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1271 transitions. [2021-11-23 02:42:06,306 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1271 transitions. Word has length 137 [2021-11-23 02:42:06,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:06,307 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1271 transitions. [2021-11-23 02:42:06,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:42:06,309 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1271 transitions. [2021-11-23 02:42:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 02:42:06,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:06,313 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:06,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 02:42:06,313 INFO L402 AbstractCegarLoop]: === Iteration 16 === 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)] === [2021-11-23 02:42:06,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1143372153, now seen corresponding path program 1 times [2021-11-23 02:42:06,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:06,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728615506] [2021-11-23 02:42:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:06,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:42:06,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:06,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728615506] [2021-11-23 02:42:06,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728615506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:06,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:06,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:06,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552762232] [2021-11-23 02:42:06,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:06,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:06,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:06,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:06,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:06,468 INFO L87 Difference]: Start difference. First operand 972 states and 1271 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:42:07,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:07,604 INFO L93 Difference]: Finished difference Result 972 states and 1271 transitions. [2021-11-23 02:42:07,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:07,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 108 [2021-11-23 02:42:07,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:07,614 INFO L225 Difference]: With dead ends: 972 [2021-11-23 02:42:07,615 INFO L226 Difference]: Without dead ends: 970 [2021-11-23 02:42:07,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:07,617 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 1110 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:07,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 2000 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:42:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-11-23 02:42:07,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2021-11-23 02:42:07,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 544 states have (on average 1.21875) internal successors, (663), 573 states have internal predecessors, (663), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-23 02:42:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1269 transitions. [2021-11-23 02:42:07,747 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1269 transitions. Word has length 108 [2021-11-23 02:42:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:07,747 INFO L470 AbstractCegarLoop]: Abstraction has 970 states and 1269 transitions. [2021-11-23 02:42:07,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 02:42:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1269 transitions. [2021-11-23 02:42:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 02:42:07,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:07,751 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:07,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 02:42:07,752 INFO L402 AbstractCegarLoop]: === Iteration 17 === 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)] === [2021-11-23 02:42:07,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1436582981, now seen corresponding path program 1 times [2021-11-23 02:42:07,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:07,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745367842] [2021-11-23 02:42:07,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:07,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:42:07,880 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:07,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745367842] [2021-11-23 02:42:07,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745367842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:07,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:07,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:07,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207103448] [2021-11-23 02:42:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:07,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:07,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:07,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:07,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:07,884 INFO L87 Difference]: Start difference. First operand 970 states and 1269 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 02:42:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:09,113 INFO L93 Difference]: Finished difference Result 970 states and 1269 transitions. [2021-11-23 02:42:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:09,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 113 [2021-11-23 02:42:09,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:09,123 INFO L225 Difference]: With dead ends: 970 [2021-11-23 02:42:09,123 INFO L226 Difference]: Without dead ends: 968 [2021-11-23 02:42:09,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:09,125 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 1107 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:09,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 1996 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 02:42:09,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-11-23 02:42:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2021-11-23 02:42:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 543 states have (on average 1.2173112338858194) internal successors, (661), 571 states have internal predecessors, (661), 304 states have call successors, (304), 109 states have call predecessors, (304), 108 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-23 02:42:09,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1267 transitions. [2021-11-23 02:42:09,232 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1267 transitions. Word has length 113 [2021-11-23 02:42:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:09,233 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1267 transitions. [2021-11-23 02:42:09,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 02:42:09,234 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1267 transitions. [2021-11-23 02:42:09,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-23 02:42:09,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:09,238 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:09,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 02:42:09,238 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:42:09,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:09,240 INFO L85 PathProgramCache]: Analyzing trace with hash -933895322, now seen corresponding path program 1 times [2021-11-23 02:42:09,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:09,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964357119] [2021-11-23 02:42:09,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:09,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-23 02:42:09,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:09,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964357119] [2021-11-23 02:42:09,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964357119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:09,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:09,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:42:09,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431520864] [2021-11-23 02:42:09,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:09,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:09,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:09,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:09,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:09,502 INFO L87 Difference]: Start difference. First operand 968 states and 1267 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:42:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:11,697 INFO L93 Difference]: Finished difference Result 978 states and 1274 transitions. [2021-11-23 02:42:11,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:11,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 138 [2021-11-23 02:42:11,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:11,708 INFO L225 Difference]: With dead ends: 978 [2021-11-23 02:42:11,708 INFO L226 Difference]: Without dead ends: 976 [2021-11-23 02:42:11,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:42:11,710 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 220 mSDsluCounter, 3412 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 4024 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:11,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 4024 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 02:42:11,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-11-23 02:42:11,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 972. [2021-11-23 02:42:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 546 states have (on average 1.216117216117216) internal successors, (664), 574 states have internal predecessors, (664), 304 states have call successors, (304), 110 states have call predecessors, (304), 109 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2021-11-23 02:42:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1270 transitions. [2021-11-23 02:42:11,860 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1270 transitions. Word has length 138 [2021-11-23 02:42:11,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:11,861 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1270 transitions. [2021-11-23 02:42:11,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:42:11,861 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1270 transitions. [2021-11-23 02:42:11,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-23 02:42:11,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:11,865 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:11,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 02:42:11,866 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:42:11,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:11,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1126694543, now seen corresponding path program 1 times [2021-11-23 02:42:11,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:11,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113573535] [2021-11-23 02:42:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:11,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-23 02:42:12,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:12,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113573535] [2021-11-23 02:42:12,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113573535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:12,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:12,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:42:12,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385428279] [2021-11-23 02:42:12,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:12,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:12,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:12,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:12,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:12,070 INFO L87 Difference]: Start difference. First operand 972 states and 1270 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-23 02:42:14,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:14,055 INFO L93 Difference]: Finished difference Result 2011 states and 2685 transitions. [2021-11-23 02:42:14,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:14,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 138 [2021-11-23 02:42:14,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:14,068 INFO L225 Difference]: With dead ends: 2011 [2021-11-23 02:42:14,069 INFO L226 Difference]: Without dead ends: 1259 [2021-11-23 02:42:14,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:14,073 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 219 mSDsluCounter, 3735 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 4459 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:14,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 4459 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 02:42:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-11-23 02:42:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 976. [2021-11-23 02:42:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 549 states have (on average 1.214936247723133) internal successors, (667), 577 states have internal predecessors, (667), 304 states have call successors, (304), 110 states have call predecessors, (304), 110 states have return successors, (303), 298 states have call predecessors, (303), 302 states have call successors, (303) [2021-11-23 02:42:14,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1274 transitions. [2021-11-23 02:42:14,204 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1274 transitions. Word has length 138 [2021-11-23 02:42:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:14,205 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1274 transitions. [2021-11-23 02:42:14,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-23 02:42:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1274 transitions. [2021-11-23 02:42:14,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 02:42:14,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:14,209 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:14,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 02:42:14,211 INFO L402 AbstractCegarLoop]: === Iteration 20 === 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)] === [2021-11-23 02:42:14,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:14,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2073252045, now seen corresponding path program 1 times [2021-11-23 02:42:14,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:14,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954504893] [2021-11-23 02:42:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:14,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:42:14,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:14,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954504893] [2021-11-23 02:42:14,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954504893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:14,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:14,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:14,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712530731] [2021-11-23 02:42:14,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:14,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:14,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:14,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:14,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:14,353 INFO L87 Difference]: Start difference. First operand 976 states and 1274 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:42:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:15,379 INFO L93 Difference]: Finished difference Result 976 states and 1274 transitions. [2021-11-23 02:42:15,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:15,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 118 [2021-11-23 02:42:15,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:15,389 INFO L225 Difference]: With dead ends: 976 [2021-11-23 02:42:15,389 INFO L226 Difference]: Without dead ends: 974 [2021-11-23 02:42:15,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:15,391 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 1104 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:15,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 1992 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:42:15,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2021-11-23 02:42:15,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 974. [2021-11-23 02:42:15,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 548 states have (on average 1.2135036496350364) internal successors, (665), 575 states have internal predecessors, (665), 304 states have call successors, (304), 110 states have call predecessors, (304), 110 states have return successors, (303), 298 states have call predecessors, (303), 302 states have call successors, (303) [2021-11-23 02:42:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1272 transitions. [2021-11-23 02:42:15,535 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1272 transitions. Word has length 118 [2021-11-23 02:42:15,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:15,536 INFO L470 AbstractCegarLoop]: Abstraction has 974 states and 1272 transitions. [2021-11-23 02:42:15,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:42:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1272 transitions. [2021-11-23 02:42:15,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-23 02:42:15,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:15,539 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:15,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 02:42:15,540 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:42:15,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:15,541 INFO L85 PathProgramCache]: Analyzing trace with hash -588677465, now seen corresponding path program 1 times [2021-11-23 02:42:15,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:15,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411648956] [2021-11-23 02:42:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:15,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:42:15,703 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:15,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411648956] [2021-11-23 02:42:15,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411648956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:15,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:15,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:15,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676945380] [2021-11-23 02:42:15,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:15,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:15,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:15,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:15,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:15,707 INFO L87 Difference]: Start difference. First operand 974 states and 1272 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:42:16,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:16,662 INFO L93 Difference]: Finished difference Result 974 states and 1272 transitions. [2021-11-23 02:42:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:16,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 123 [2021-11-23 02:42:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:16,677 INFO L225 Difference]: With dead ends: 974 [2021-11-23 02:42:16,678 INFO L226 Difference]: Without dead ends: 972 [2021-11-23 02:42:16,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:16,680 INFO L933 BasicCegarLoop]: 994 mSDtfsCounter, 1101 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:16,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 1988 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 02:42:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-11-23 02:42:16,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 972. [2021-11-23 02:42:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 547 states have (on average 1.2120658135283364) internal successors, (663), 573 states have internal predecessors, (663), 304 states have call successors, (304), 110 states have call predecessors, (304), 110 states have return successors, (303), 298 states have call predecessors, (303), 302 states have call successors, (303) [2021-11-23 02:42:16,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1270 transitions. [2021-11-23 02:42:16,816 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1270 transitions. Word has length 123 [2021-11-23 02:42:16,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:16,816 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1270 transitions. [2021-11-23 02:42:16,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:42:16,817 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1270 transitions. [2021-11-23 02:42:16,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 02:42:16,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:16,821 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:16,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 02:42:16,821 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:42:16,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:16,822 INFO L85 PathProgramCache]: Analyzing trace with hash 676486989, now seen corresponding path program 1 times [2021-11-23 02:42:16,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:16,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862382868] [2021-11-23 02:42:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:16,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-23 02:42:17,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:17,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862382868] [2021-11-23 02:42:17,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862382868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:17,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:17,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:42:17,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575552069] [2021-11-23 02:42:17,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:17,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:17,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:17,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:17,011 INFO L87 Difference]: Start difference. First operand 972 states and 1270 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 02:42:19,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:42:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:19,725 INFO L93 Difference]: Finished difference Result 1016 states and 1310 transitions. [2021-11-23 02:42:19,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:42:19,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 151 [2021-11-23 02:42:19,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:19,734 INFO L225 Difference]: With dead ends: 1016 [2021-11-23 02:42:19,734 INFO L226 Difference]: Without dead ends: 1014 [2021-11-23 02:42:19,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:19,735 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 1069 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:19,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 3042 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 02:42:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-11-23 02:42:19,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1010. [2021-11-23 02:42:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 572 states have (on average 1.2097902097902098) internal successors, (692), 598 states have internal predecessors, (692), 307 states have call successors, (307), 120 states have call predecessors, (307), 120 states have return successors, (306), 301 states have call predecessors, (306), 305 states have call successors, (306) [2021-11-23 02:42:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1305 transitions. [2021-11-23 02:42:19,900 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1305 transitions. Word has length 151 [2021-11-23 02:42:19,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:19,901 INFO L470 AbstractCegarLoop]: Abstraction has 1010 states and 1305 transitions. [2021-11-23 02:42:19,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 02:42:19,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1305 transitions. [2021-11-23 02:42:19,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 02:42:19,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:19,904 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:19,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 02:42:19,904 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:42:19,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:19,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1159027858, now seen corresponding path program 1 times [2021-11-23 02:42:19,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:19,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233589003] [2021-11-23 02:42:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:19,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:42:20,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:20,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233589003] [2021-11-23 02:42:20,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233589003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:20,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:20,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:20,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603732971] [2021-11-23 02:42:20,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:20,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:20,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:20,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:20,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:20,020 INFO L87 Difference]: Start difference. First operand 1010 states and 1305 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:42:21,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:21,526 INFO L93 Difference]: Finished difference Result 1010 states and 1305 transitions. [2021-11-23 02:42:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:21,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 128 [2021-11-23 02:42:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:21,535 INFO L225 Difference]: With dead ends: 1010 [2021-11-23 02:42:21,536 INFO L226 Difference]: Without dead ends: 1008 [2021-11-23 02:42:21,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:21,539 INFO L933 BasicCegarLoop]: 992 mSDtfsCounter, 1098 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:21,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 1984 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 02:42:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-23 02:42:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1008. [2021-11-23 02:42:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 571 states have (on average 1.2084063047285465) internal successors, (690), 596 states have internal predecessors, (690), 307 states have call successors, (307), 120 states have call predecessors, (307), 120 states have return successors, (306), 301 states have call predecessors, (306), 305 states have call successors, (306) [2021-11-23 02:42:21,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1303 transitions. [2021-11-23 02:42:21,689 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1303 transitions. Word has length 128 [2021-11-23 02:42:21,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:21,689 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1303 transitions. [2021-11-23 02:42:21,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:42:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1303 transitions. [2021-11-23 02:42:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 02:42:21,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:21,695 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-11-23 02:42:21,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 02:42:21,696 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)] === [2021-11-23 02:42:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:21,697 INFO L85 PathProgramCache]: Analyzing trace with hash -871463278, now seen corresponding path program 1 times [2021-11-23 02:42:21,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:21,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17810195] [2021-11-23 02:42:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:21,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-23 02:42:21,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:21,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17810195] [2021-11-23 02:42:21,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17810195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:21,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:21,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:42:21,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082158616] [2021-11-23 02:42:21,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:21,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:21,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:21,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:21,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:21,849 INFO L87 Difference]: Start difference. First operand 1008 states and 1303 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:42:22,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:22,515 INFO L93 Difference]: Finished difference Result 1915 states and 2456 transitions. [2021-11-23 02:42:22,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:22,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 160 [2021-11-23 02:42:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:22,526 INFO L225 Difference]: With dead ends: 1915 [2021-11-23 02:42:22,526 INFO L226 Difference]: Without dead ends: 1004 [2021-11-23 02:42:22,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:42:22,531 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 1119 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:22,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 988 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 02:42:22,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-23 02:42:22,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2021-11-23 02:42:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 568 states have (on average 1.2059859154929577) internal successors, (685), 592 states have internal predecessors, (685), 307 states have call successors, (307), 120 states have call predecessors, (307), 120 states have return successors, (306), 301 states have call predecessors, (306), 305 states have call successors, (306) [2021-11-23 02:42:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1298 transitions. [2021-11-23 02:42:22,718 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1298 transitions. Word has length 160 [2021-11-23 02:42:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:22,719 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1298 transitions. [2021-11-23 02:42:22,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 02:42:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1298 transitions. [2021-11-23 02:42:22,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-23 02:42:22,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:22,723 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:22,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 02:42:22,723 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)] === [2021-11-23 02:42:22,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:22,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1328104122, now seen corresponding path program 1 times [2021-11-23 02:42:22,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:22,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483698088] [2021-11-23 02:42:22,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:22,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:42:22,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:22,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483698088] [2021-11-23 02:42:22,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483698088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:22,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:22,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:22,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086209511] [2021-11-23 02:42:22,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:22,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:22,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:22,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:22,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:22,918 INFO L87 Difference]: Start difference. First operand 1004 states and 1298 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 02:42:24,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:24,460 INFO L93 Difference]: Finished difference Result 1004 states and 1298 transitions. [2021-11-23 02:42:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:24,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 133 [2021-11-23 02:42:24,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:24,469 INFO L225 Difference]: With dead ends: 1004 [2021-11-23 02:42:24,469 INFO L226 Difference]: Without dead ends: 1002 [2021-11-23 02:42:24,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:24,471 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 1090 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:24,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 1970 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 02:42:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-11-23 02:42:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1002. [2021-11-23 02:42:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 567 states have (on average 1.2045855379188712) internal successors, (683), 590 states have internal predecessors, (683), 307 states have call successors, (307), 120 states have call predecessors, (307), 120 states have return successors, (306), 301 states have call predecessors, (306), 305 states have call successors, (306) [2021-11-23 02:42:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1296 transitions. [2021-11-23 02:42:24,591 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1296 transitions. Word has length 133 [2021-11-23 02:42:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:24,592 INFO L470 AbstractCegarLoop]: Abstraction has 1002 states and 1296 transitions. [2021-11-23 02:42:24,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 02:42:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1296 transitions. [2021-11-23 02:42:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-23 02:42:24,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:24,596 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:24,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 02:42:24,596 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)] === [2021-11-23 02:42:24,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:24,597 INFO L85 PathProgramCache]: Analyzing trace with hash -22576552, now seen corresponding path program 1 times [2021-11-23 02:42:24,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:24,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665173335] [2021-11-23 02:42:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:24,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-23 02:42:24,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:24,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665173335] [2021-11-23 02:42:24,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665173335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:42:24,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997577973] [2021-11-23 02:42:24,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:24,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:42:24,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:42:24,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:42:24,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:42:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:25,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:42:25,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-23 02:42:25,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:42:25,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997577973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:25,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:42:25,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-23 02:42:25,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065309689] [2021-11-23 02:42:25,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:25,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:42:25,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:25,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:42:25,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:42:25,962 INFO L87 Difference]: Start difference. First operand 1002 states and 1296 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:42:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:27,123 INFO L93 Difference]: Finished difference Result 1922 states and 2459 transitions. [2021-11-23 02:42:27,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:42:27,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 165 [2021-11-23 02:42:27,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:27,134 INFO L225 Difference]: With dead ends: 1922 [2021-11-23 02:42:27,134 INFO L226 Difference]: Without dead ends: 1020 [2021-11-23 02:42:27,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:42:27,139 INFO L933 BasicCegarLoop]: 993 mSDtfsCounter, 1034 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:27,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1034 Valid, 1043 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:42:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2021-11-23 02:42:27,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1018. [2021-11-23 02:42:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 574 states have (on average 1.1986062717770034) internal successors, (688), 597 states have internal predecessors, (688), 311 states have call successors, (311), 126 states have call predecessors, (311), 126 states have return successors, (310), 304 states have call predecessors, (310), 309 states have call successors, (310) [2021-11-23 02:42:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1309 transitions. [2021-11-23 02:42:27,294 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1309 transitions. Word has length 165 [2021-11-23 02:42:27,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:27,295 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1309 transitions. [2021-11-23 02:42:27,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 02:42:27,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1309 transitions. [2021-11-23 02:42:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-23 02:42:27,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:27,299 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:27,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:42:27,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-23 02:42:27,522 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)] === [2021-11-23 02:42:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:27,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1043076461, now seen corresponding path program 1 times [2021-11-23 02:42:27,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:27,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381112627] [2021-11-23 02:42:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:27,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:42:27,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:27,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381112627] [2021-11-23 02:42:27,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381112627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:27,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:27,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:27,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133888162] [2021-11-23 02:42:27,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:27,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:27,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:27,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:27,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:27,670 INFO L87 Difference]: Start difference. First operand 1018 states and 1309 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 02:42:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:29,458 INFO L93 Difference]: Finished difference Result 1742 states and 2203 transitions. [2021-11-23 02:42:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:29,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 138 [2021-11-23 02:42:29,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:29,491 INFO L225 Difference]: With dead ends: 1742 [2021-11-23 02:42:29,500 INFO L226 Difference]: Without dead ends: 1740 [2021-11-23 02:42:29,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:29,503 INFO L933 BasicCegarLoop]: 1149 mSDtfsCounter, 1024 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:29,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 2999 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 02:42:29,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2021-11-23 02:42:29,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1726. [2021-11-23 02:42:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 987 states have (on average 1.1995947315096251) internal successors, (1184), 1022 states have internal predecessors, (1184), 504 states have call successors, (504), 227 states have call predecessors, (504), 228 states have return successors, (504), 492 states have call predecessors, (504), 502 states have call successors, (504) [2021-11-23 02:42:29,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2192 transitions. [2021-11-23 02:42:29,836 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2192 transitions. Word has length 138 [2021-11-23 02:42:29,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:29,836 INFO L470 AbstractCegarLoop]: Abstraction has 1726 states and 2192 transitions. [2021-11-23 02:42:29,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 02:42:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2192 transitions. [2021-11-23 02:42:29,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-23 02:42:29,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:29,841 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:29,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 02:42:29,841 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)] === [2021-11-23 02:42:29,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash -56762170, now seen corresponding path program 1 times [2021-11-23 02:42:29,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:29,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338186087] [2021-11-23 02:42:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:29,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:42:29,983 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:29,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338186087] [2021-11-23 02:42:29,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338186087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:29,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:29,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:29,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012848837] [2021-11-23 02:42:29,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:29,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:29,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:29,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:29,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:29,986 INFO L87 Difference]: Start difference. First operand 1726 states and 2192 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 02:42:31,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:31,408 INFO L93 Difference]: Finished difference Result 1726 states and 2192 transitions. [2021-11-23 02:42:31,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:31,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 143 [2021-11-23 02:42:31,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:31,416 INFO L225 Difference]: With dead ends: 1726 [2021-11-23 02:42:31,417 INFO L226 Difference]: Without dead ends: 1724 [2021-11-23 02:42:31,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:31,419 INFO L933 BasicCegarLoop]: 978 mSDtfsCounter, 1081 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:31,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 1956 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 02:42:31,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2021-11-23 02:42:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2021-11-23 02:42:31,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 986 states have (on average 1.1977687626774849) internal successors, (1181), 1020 states have internal predecessors, (1181), 504 states have call successors, (504), 227 states have call predecessors, (504), 228 states have return successors, (504), 492 states have call predecessors, (504), 502 states have call successors, (504) [2021-11-23 02:42:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2189 transitions. [2021-11-23 02:42:31,734 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2189 transitions. Word has length 143 [2021-11-23 02:42:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:31,735 INFO L470 AbstractCegarLoop]: Abstraction has 1724 states and 2189 transitions. [2021-11-23 02:42:31,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 02:42:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2189 transitions. [2021-11-23 02:42:31,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-23 02:42:31,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:31,739 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:31,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 02:42:31,740 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)] === [2021-11-23 02:42:31,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:31,740 INFO L85 PathProgramCache]: Analyzing trace with hash 834206149, now seen corresponding path program 1 times [2021-11-23 02:42:31,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:31,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327646375] [2021-11-23 02:42:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:31,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:31,876 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:42:31,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:31,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327646375] [2021-11-23 02:42:31,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327646375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:31,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:31,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:42:31,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665633354] [2021-11-23 02:42:31,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:31,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:42:31,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:31,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:42:31,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:42:31,880 INFO L87 Difference]: Start difference. First operand 1724 states and 2189 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 02:42:33,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:33,524 INFO L93 Difference]: Finished difference Result 2564 states and 3254 transitions. [2021-11-23 02:42:33,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:42:33,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 148 [2021-11-23 02:42:33,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:33,540 INFO L225 Difference]: With dead ends: 2564 [2021-11-23 02:42:33,540 INFO L226 Difference]: Without dead ends: 2436 [2021-11-23 02:42:33,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:33,546 INFO L933 BasicCegarLoop]: 1221 mSDtfsCounter, 932 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:33,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 3354 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:42:33,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2021-11-23 02:42:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2427. [2021-11-23 02:42:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 1394 states have (on average 1.2037302725968435) internal successors, (1678), 1440 states have internal predecessors, (1678), 706 states have call successors, (706), 320 states have call predecessors, (706), 321 states have return successors, (711), 689 states have call predecessors, (711), 704 states have call successors, (711) [2021-11-23 02:42:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3095 transitions. [2021-11-23 02:42:34,012 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3095 transitions. Word has length 148 [2021-11-23 02:42:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:34,012 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 3095 transitions. [2021-11-23 02:42:34,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 02:42:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3095 transitions. [2021-11-23 02:42:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-23 02:42:34,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:34,016 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:34,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 02:42:34,016 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:42:34,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:34,017 INFO L85 PathProgramCache]: Analyzing trace with hash -803822998, now seen corresponding path program 1 times [2021-11-23 02:42:34,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:34,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656449712] [2021-11-23 02:42:34,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:34,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-11-23 02:42:34,216 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:34,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656449712] [2021-11-23 02:42:34,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656449712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:34,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:34,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:42:34,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83120380] [2021-11-23 02:42:34,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:34,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:34,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:34,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:34,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:34,219 INFO L87 Difference]: Start difference. First operand 2427 states and 3095 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 02:42:36,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:36,681 INFO L93 Difference]: Finished difference Result 2648 states and 3276 transitions. [2021-11-23 02:42:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:42:36,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 166 [2021-11-23 02:42:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:36,693 INFO L225 Difference]: With dead ends: 2648 [2021-11-23 02:42:36,693 INFO L226 Difference]: Without dead ends: 2646 [2021-11-23 02:42:36,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:42:36,696 INFO L933 BasicCegarLoop]: 1020 mSDtfsCounter, 784 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:36,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 3391 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 02:42:36,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2021-11-23 02:42:37,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2642. [2021-11-23 02:42:37,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 1515 states have (on average 1.186138613861386) internal successors, (1797), 1560 states have internal predecessors, (1797), 730 states have call successors, (730), 391 states have call predecessors, (730), 392 states have return successors, (735), 713 states have call predecessors, (735), 728 states have call successors, (735) [2021-11-23 02:42:37,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3262 transitions. [2021-11-23 02:42:37,053 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3262 transitions. Word has length 166 [2021-11-23 02:42:37,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:37,054 INFO L470 AbstractCegarLoop]: Abstraction has 2642 states and 3262 transitions. [2021-11-23 02:42:37,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 02:42:37,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3262 transitions. [2021-11-23 02:42:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-23 02:42:37,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:37,057 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:37,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 02:42:37,057 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:42:37,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:37,058 INFO L85 PathProgramCache]: Analyzing trace with hash 850104435, now seen corresponding path program 1 times [2021-11-23 02:42:37,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:37,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857695941] [2021-11-23 02:42:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:37,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-11-23 02:42:37,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:37,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857695941] [2021-11-23 02:42:37,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857695941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:37,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:37,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:42:37,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879505826] [2021-11-23 02:42:37,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:37,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:37,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:37,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:37,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:37,266 INFO L87 Difference]: Start difference. First operand 2642 states and 3262 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 02:42:39,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:39,315 INFO L93 Difference]: Finished difference Result 2646 states and 3264 transitions. [2021-11-23 02:42:39,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:39,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 166 [2021-11-23 02:42:39,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:39,328 INFO L225 Difference]: With dead ends: 2646 [2021-11-23 02:42:39,329 INFO L226 Difference]: Without dead ends: 2644 [2021-11-23 02:42:39,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:42:39,332 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 45 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:39,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 3905 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 02:42:39,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2021-11-23 02:42:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2642. [2021-11-23 02:42:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 1515 states have (on average 1.1808580858085809) internal successors, (1789), 1560 states have internal predecessors, (1789), 730 states have call successors, (730), 391 states have call predecessors, (730), 392 states have return successors, (735), 713 states have call predecessors, (735), 728 states have call successors, (735) [2021-11-23 02:42:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3254 transitions. [2021-11-23 02:42:39,668 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3254 transitions. Word has length 166 [2021-11-23 02:42:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:39,669 INFO L470 AbstractCegarLoop]: Abstraction has 2642 states and 3254 transitions. [2021-11-23 02:42:39,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 02:42:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3254 transitions. [2021-11-23 02:42:39,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-23 02:42:39,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:39,673 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:42:39,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-23 02:42:39,673 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:42:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:39,674 INFO L85 PathProgramCache]: Analyzing trace with hash 286990509, now seen corresponding path program 1 times [2021-11-23 02:42:39,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:39,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405020038] [2021-11-23 02:42:39,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:39,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-23 02:42:39,869 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:39,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405020038] [2021-11-23 02:42:39,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405020038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:39,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:39,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:42:39,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46332582] [2021-11-23 02:42:39,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:39,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:42:39,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:39,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:42:39,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:42:39,872 INFO L87 Difference]: Start difference. First operand 2642 states and 3254 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) [2021-11-23 02:42:42,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:42,566 INFO L93 Difference]: Finished difference Result 2644 states and 3255 transitions. [2021-11-23 02:42:42,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:42:42,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) Word has length 189 [2021-11-23 02:42:42,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:42,577 INFO L225 Difference]: With dead ends: 2644 [2021-11-23 02:42:42,577 INFO L226 Difference]: Without dead ends: 2642 [2021-11-23 02:42:42,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:42:42,580 INFO L933 BasicCegarLoop]: 1027 mSDtfsCounter, 390 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 3783 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:42,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 3783 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 02:42:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-11-23 02:42:42,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2640. [2021-11-23 02:42:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 1514 states have (on average 1.1756935270805813) internal successors, (1780), 1558 states have internal predecessors, (1780), 730 states have call successors, (730), 391 states have call predecessors, (730), 392 states have return successors, (735), 713 states have call predecessors, (735), 728 states have call successors, (735) [2021-11-23 02:42:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 3245 transitions. [2021-11-23 02:42:42,997 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 3245 transitions. Word has length 189 [2021-11-23 02:42:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:42,998 INFO L470 AbstractCegarLoop]: Abstraction has 2640 states and 3245 transitions. [2021-11-23 02:42:42,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) [2021-11-23 02:42:42,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 3245 transitions. [2021-11-23 02:42:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-23 02:42:43,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:43,003 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:42:43,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-23 02:42:43,004 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:42:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:43,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1375440762, now seen corresponding path program 1 times [2021-11-23 02:42:43,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:43,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145422223] [2021-11-23 02:42:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:43,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-11-23 02:42:43,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:43,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145422223] [2021-11-23 02:42:43,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145422223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:43,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:43,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 02:42:43,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087663918] [2021-11-23 02:42:43,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:43,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:42:43,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:43,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:42:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:42:43,434 INFO L87 Difference]: Start difference. First operand 2640 states and 3245 transitions. Second operand has 10 states, 7 states have (on average 11.142857142857142) internal successors, (78), 9 states have internal predecessors, (78), 5 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2021-11-23 02:42:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:49,119 INFO L93 Difference]: Finished difference Result 5186 states and 6465 transitions. [2021-11-23 02:42:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 02:42:49,119 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 11.142857142857142) internal successors, (78), 9 states have internal predecessors, (78), 5 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) Word has length 209 [2021-11-23 02:42:49,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:49,130 INFO L225 Difference]: With dead ends: 5186 [2021-11-23 02:42:49,131 INFO L226 Difference]: Without dead ends: 2971 [2021-11-23 02:42:49,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:42:49,141 INFO L933 BasicCegarLoop]: 1076 mSDtfsCounter, 69 mSDsluCounter, 9508 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 9454 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:49,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 9454 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 02:42:49,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2021-11-23 02:42:49,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2658. [2021-11-23 02:42:49,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 1526 states have (on average 1.1743119266055047) internal successors, (1792), 1570 states have internal predecessors, (1792), 736 states have call successors, (736), 391 states have call predecessors, (736), 392 states have return successors, (741), 719 states have call predecessors, (741), 734 states have call successors, (741) [2021-11-23 02:42:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3269 transitions. [2021-11-23 02:42:49,545 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3269 transitions. Word has length 209 [2021-11-23 02:42:49,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:49,546 INFO L470 AbstractCegarLoop]: Abstraction has 2658 states and 3269 transitions. [2021-11-23 02:42:49,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 11.142857142857142) internal successors, (78), 9 states have internal predecessors, (78), 5 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2021-11-23 02:42:49,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3269 transitions. [2021-11-23 02:42:49,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-23 02:42:49,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:49,550 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-23 02:42:49,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-23 02:42:49,551 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:42:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:49,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1803912638, now seen corresponding path program 1 times [2021-11-23 02:42:49,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:49,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462760907] [2021-11-23 02:42:49,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:49,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2021-11-23 02:42:49,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:42:49,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462760907] [2021-11-23 02:42:49,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462760907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:42:49,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:42:49,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 02:42:49,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028087419] [2021-11-23 02:42:49,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:42:49,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:42:49,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:42:49,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:42:49,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:42:49,986 INFO L87 Difference]: Start difference. First operand 2658 states and 3269 transitions. Second operand has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 5 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-23 02:42:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:42:54,885 INFO L93 Difference]: Finished difference Result 5465 states and 7095 transitions. [2021-11-23 02:42:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:42:54,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 5 states have call predecessors, (38), 3 states have call successors, (38) Word has length 231 [2021-11-23 02:42:54,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:42:54,899 INFO L225 Difference]: With dead ends: 5465 [2021-11-23 02:42:54,899 INFO L226 Difference]: Without dead ends: 3624 [2021-11-23 02:42:54,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:42:54,909 INFO L933 BasicCegarLoop]: 1496 mSDtfsCounter, 284 mSDsluCounter, 11294 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 11568 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:42:54,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 11568 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-23 02:42:54,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2021-11-23 02:42:55,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 2666. [2021-11-23 02:42:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 1531 states have (on average 1.1737426518615284) internal successors, (1797), 1575 states have internal predecessors, (1797), 737 states have call successors, (737), 391 states have call predecessors, (737), 394 states have return successors, (745), 722 states have call predecessors, (745), 735 states have call successors, (745) [2021-11-23 02:42:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3279 transitions. [2021-11-23 02:42:55,257 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3279 transitions. Word has length 231 [2021-11-23 02:42:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:42:55,258 INFO L470 AbstractCegarLoop]: Abstraction has 2666 states and 3279 transitions. [2021-11-23 02:42:55,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 5 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-23 02:42:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3279 transitions. [2021-11-23 02:42:55,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-23 02:42:55,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:42:55,263 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-23 02:42:55,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-23 02:42:55,264 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:42:55,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:42:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash -787386822, now seen corresponding path program 1 times [2021-11-23 02:42:55,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:42:55,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748728070] [2021-11-23 02:42:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:55,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:42:55,334 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:42:55,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581308020] [2021-11-23 02:42:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:42:55,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:42:55,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:42:55,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:42:55,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:42:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:42:56,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 112 conjunts are in the unsatisfiable core [2021-11-23 02:42:56,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:42:56,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:42:58,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:42:58,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:42:58,915 INFO L354 Elim1Store]: treesize reduction 866, result has 5.8 percent of original size [2021-11-23 02:42:58,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 127 treesize of output 131 [2021-11-23 02:42:59,101 INFO L354 Elim1Store]: treesize reduction 866, result has 5.8 percent of original size [2021-11-23 02:42:59,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 109 [2021-11-23 02:42:59,140 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:42:59,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 97 [2021-11-23 02:43:09,388 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-11-23 02:43:09,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 109 treesize of output 75 [2021-11-23 02:43:09,401 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-11-23 02:43:09,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 26 [2021-11-23 02:43:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-11-23 02:43:09,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:43:09,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:09,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748728070] [2021-11-23 02:43:09,517 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:43:09,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581308020] [2021-11-23 02:43:09,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581308020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:09,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:09,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 02:43:09,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17992873] [2021-11-23 02:43:09,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:09,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 02:43:09,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 02:43:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=577, Unknown=1, NotChecked=0, Total=650 [2021-11-23 02:43:09,521 INFO L87 Difference]: Start difference. First operand 2666 states and 3279 transitions. Second operand has 26 states, 21 states have (on average 4.095238095238095) internal successors, (86), 20 states have internal predecessors, (86), 11 states have call successors, (45), 6 states have call predecessors, (45), 7 states have return successors, (43), 13 states have call predecessors, (43), 9 states have call successors, (43) [2021-11-23 02:43:32,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:32,493 INFO L93 Difference]: Finished difference Result 4575 states and 5601 transitions. [2021-11-23 02:43:32,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-23 02:43:32,494 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 4.095238095238095) internal successors, (86), 20 states have internal predecessors, (86), 11 states have call successors, (45), 6 states have call predecessors, (45), 7 states have return successors, (43), 13 states have call predecessors, (43), 9 states have call successors, (43) Word has length 248 [2021-11-23 02:43:32,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:32,507 INFO L225 Difference]: With dead ends: 4575 [2021-11-23 02:43:32,507 INFO L226 Difference]: Without dead ends: 2785 [2021-11-23 02:43:32,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 192 SyntacticMatches, 32 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=134, Invalid=1194, Unknown=4, NotChecked=0, Total=1332 [2021-11-23 02:43:32,517 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 225 mSDsluCounter, 12256 mSDsCounter, 0 mSdLazyCounter, 10598 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 11998 SdHoareTripleChecker+Invalid, 12053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 10598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1159 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:32,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 11998 Invalid, 12053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [296 Valid, 10598 Invalid, 0 Unknown, 1159 Unchecked, 16.1s Time] [2021-11-23 02:43:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-11-23 02:43:33,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2741. [2021-11-23 02:43:33,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 1573 states have (on average 1.1697393515575334) internal successors, (1840), 1620 states have internal predecessors, (1840), 750 states have call successors, (750), 407 states have call predecessors, (750), 414 states have return successors, (763), 736 states have call predecessors, (763), 748 states have call successors, (763) [2021-11-23 02:43:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3353 transitions. [2021-11-23 02:43:33,062 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3353 transitions. Word has length 248 [2021-11-23 02:43:33,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:33,063 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 3353 transitions. [2021-11-23 02:43:33,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 4.095238095238095) internal successors, (86), 20 states have internal predecessors, (86), 11 states have call successors, (45), 6 states have call predecessors, (45), 7 states have return successors, (43), 13 states have call predecessors, (43), 9 states have call successors, (43) [2021-11-23 02:43:33,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3353 transitions. [2021-11-23 02:43:33,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-23 02:43:33,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:33,068 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-23 02:43:33,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:33,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-23 02:43:33,284 INFO L402 AbstractCegarLoop]: === Iteration 36 === 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)] === [2021-11-23 02:43:33,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:33,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1047232639, now seen corresponding path program 1 times [2021-11-23 02:43:33,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:33,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716140363] [2021-11-23 02:43:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:33,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:33,351 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:43:33,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615874263] [2021-11-23 02:43:33,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:33,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:33,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:33,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:33,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:43:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:34,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 118 conjunts are in the unsatisfiable core [2021-11-23 02:43:34,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:34,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:43:35,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:43:35,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:43:36,539 INFO L354 Elim1Store]: treesize reduction 590, result has 6.9 percent of original size [2021-11-23 02:43:36,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 141 treesize of output 141 [2021-11-23 02:43:36,727 INFO L354 Elim1Store]: treesize reduction 290, result has 13.2 percent of original size [2021-11-23 02:43:36,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 138 treesize of output 134 [2021-11-23 02:43:36,903 INFO L354 Elim1Store]: treesize reduction 866, result has 5.8 percent of original size [2021-11-23 02:43:36,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 109 [2021-11-23 02:43:36,925 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:43:36,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 97 [2021-11-23 02:43:45,035 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-11-23 02:43:45,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 109 treesize of output 75 [2021-11-23 02:43:45,047 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-11-23 02:43:45,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 26 [2021-11-23 02:43:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2021-11-23 02:43:45,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:43:45,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:45,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716140363] [2021-11-23 02:43:45,158 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:43:45,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615874263] [2021-11-23 02:43:45,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615874263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:45,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:45,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 02:43:45,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148011398] [2021-11-23 02:43:45,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:45,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 02:43:45,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:45,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 02:43:45,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=576, Unknown=2, NotChecked=0, Total=650 [2021-11-23 02:43:45,161 INFO L87 Difference]: Start difference. First operand 2741 states and 3353 transitions. Second operand has 26 states, 21 states have (on average 4.285714285714286) internal successors, (90), 20 states have internal predecessors, (90), 11 states have call successors, (47), 6 states have call predecessors, (47), 7 states have return successors, (45), 13 states have call predecessors, (45), 9 states have call successors, (45) [2021-11-23 02:44:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:44:03,567 INFO L93 Difference]: Finished difference Result 4641 states and 5664 transitions. [2021-11-23 02:44:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-23 02:44:03,567 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 4.285714285714286) internal successors, (90), 20 states have internal predecessors, (90), 11 states have call successors, (47), 6 states have call predecessors, (47), 7 states have return successors, (45), 13 states have call predecessors, (45), 9 states have call successors, (45) Word has length 258 [2021-11-23 02:44:03,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:44:03,581 INFO L225 Difference]: With dead ends: 4641 [2021-11-23 02:44:03,581 INFO L226 Difference]: Without dead ends: 2833 [2021-11-23 02:44:03,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 198 SyntacticMatches, 36 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=128, Invalid=1128, Unknown=4, NotChecked=0, Total=1260 [2021-11-23 02:44:03,591 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 225 mSDsluCounter, 10363 mSDsCounter, 0 mSdLazyCounter, 8780 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 10344 SdHoareTripleChecker+Invalid, 10122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 8780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1049 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:44:03,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 10344 Invalid, 10122 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [293 Valid, 8780 Invalid, 0 Unknown, 1049 Unchecked, 13.6s Time] [2021-11-23 02:44:03,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2021-11-23 02:44:04,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2750. [2021-11-23 02:44:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 1578 states have (on average 1.1692015209125475) internal successors, (1845), 1625 states have internal predecessors, (1845), 752 states have call successors, (752), 409 states have call predecessors, (752), 416 states have return successors, (765), 738 states have call predecessors, (765), 750 states have call successors, (765) [2021-11-23 02:44:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3362 transitions. [2021-11-23 02:44:04,143 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3362 transitions. Word has length 258 [2021-11-23 02:44:04,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:44:04,144 INFO L470 AbstractCegarLoop]: Abstraction has 2750 states and 3362 transitions. [2021-11-23 02:44:04,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 4.285714285714286) internal successors, (90), 20 states have internal predecessors, (90), 11 states have call successors, (47), 6 states have call predecessors, (47), 7 states have return successors, (45), 13 states have call predecessors, (45), 9 states have call successors, (45) [2021-11-23 02:44:04,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3362 transitions. [2021-11-23 02:44:04,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-23 02:44:04,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:04,150 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-11-23 02:44:04,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:44:04,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:44:04,376 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-23 02:44:04,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:04,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1427468920, now seen corresponding path program 1 times [2021-11-23 02:44:04,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:44:04,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484280120] [2021-11-23 02:44:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:04,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:44:04,454 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:44:04,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21088200] [2021-11-23 02:44:04,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:04,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:44:04,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:44:04,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:44:04,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7356147-e2c3-471d-b90b-0f7274507ffc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:44:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:05,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2505 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-23 02:44:05,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:44:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-11-23 02:44:06,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 13 proven. 39 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-11-23 02:44:07,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:44:07,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484280120] [2021-11-23 02:44:07,121 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:44:07,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21088200] [2021-11-23 02:44:07,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21088200] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:44:07,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1759793412] [2021-11-23 02:44:07,153 INFO L159 IcfgInterpreter]: Started Sifa with 146 locations of interest [2021-11-23 02:44:07,154 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:44:07,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:44:07,167 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:44:07,167 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:44:09,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:44:09,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:44:09,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:44:09,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:44:09,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:44:09,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:44:09,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:44:10,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:44:10,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:44:10,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:44:10,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:44:10,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:44:10,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2021-11-23 02:52:04,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:52:04,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:54:08,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:54:08,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:54:08,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:54:10,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:54:10,557 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 02:54:10,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 710 treesize of output 705 [2021-11-23 02:54:10,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:54:10,689 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 02:54:10,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 706 treesize of output 701 [2021-11-23 02:54:11,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1