./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7 --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 5574142529d95f295134c1dccd4c5dbe0383ae5c309e7dc50fd933e5702659ed --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:08:44,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:08:44,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:08:44,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:08:44,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:08:44,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:08:44,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:08:44,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:08:44,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:08:44,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:08:44,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:08:44,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:08:44,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:08:44,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:08:44,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:08:44,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:08:44,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:08:44,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:08:44,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:08:45,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:08:45,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:08:45,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:08:45,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:08:45,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:08:45,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:08:45,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:08:45,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:08:45,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:08:45,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:08:45,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:08:45,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:08:45,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:08:45,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:08:45,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:08:45,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:08:45,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:08:45,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:08:45,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:08:45,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:08:45,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:08:45,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:08:45,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:08:45,076 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:08:45,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:08:45,076 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:08:45,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:08:45,077 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:08:45,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:08:45,078 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:08:45,078 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:08:45,078 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:08:45,079 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:08:45,079 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:08:45,079 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:08:45,079 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:08:45,080 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:08:45,080 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:08:45,080 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:08:45,080 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:08:45,080 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:08:45,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:08:45,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:08:45,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:08:45,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:08:45,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:08:45,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:08:45,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:08:45,083 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:08:45,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:08:45,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:08:45,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:08:45,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:08:45,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:08:45,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:08:45,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:08:45,085 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:08:45,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:08:45,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:08:45,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:08:45,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:08:45,086 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5574142529d95f295134c1dccd4c5dbe0383ae5c309e7dc50fd933e5702659ed [2021-11-25 20:08:45,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:08:45,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:08:45,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:08:45,350 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:08:45,351 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:08:45,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i [2021-11-25 20:08:45,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/data/88a1e83f2/1c0ae3b0229d4ef4afefd9efb581ceb5/FLAG5f7e05b64 [2021-11-25 20:08:46,408 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:08:46,410 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i [2021-11-25 20:08:46,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/data/88a1e83f2/1c0ae3b0229d4ef4afefd9efb581ceb5/FLAG5f7e05b64 [2021-11-25 20:08:46,796 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/data/88a1e83f2/1c0ae3b0229d4ef4afefd9efb581ceb5 [2021-11-25 20:08:46,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:08:46,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:08:46,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:08:46,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:08:46,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:08:46,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:08:46" (1/1) ... [2021-11-25 20:08:46,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148f43ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:46, skipping insertion in model container [2021-11-25 20:08:46,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:08:46" (1/1) ... [2021-11-25 20:08:46,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:08:46,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:08:49,567 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273031,273044] [2021-11-25 20:08:49,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273176,273189] [2021-11-25 20:08:49,572 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273322,273335] [2021-11-25 20:08:49,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273487,273500] [2021-11-25 20:08:49,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273645,273658] [2021-11-25 20:08:49,574 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273803,273816] [2021-11-25 20:08:49,574 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273961,273974] [2021-11-25 20:08:49,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274121,274134] [2021-11-25 20:08:49,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274280,274293] [2021-11-25 20:08:49,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274419,274432] [2021-11-25 20:08:49,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274561,274574] [2021-11-25 20:08:49,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274710,274723] [2021-11-25 20:08:49,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274849,274862] [2021-11-25 20:08:49,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275004,275017] [2021-11-25 20:08:49,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275164,275177] [2021-11-25 20:08:49,594 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275315,275328] [2021-11-25 20:08:49,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275466,275479] [2021-11-25 20:08:49,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275618,275631] [2021-11-25 20:08:49,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275767,275780] [2021-11-25 20:08:49,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275915,275928] [2021-11-25 20:08:49,609 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276072,276085] [2021-11-25 20:08:49,609 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276221,276234] [2021-11-25 20:08:49,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276377,276390] [2021-11-25 20:08:49,611 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276530,276543] [2021-11-25 20:08:49,611 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276676,276689] [2021-11-25 20:08:49,612 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276819,276832] [2021-11-25 20:08:49,612 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276971,276984] [2021-11-25 20:08:49,613 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277117,277130] [2021-11-25 20:08:49,614 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277262,277275] [2021-11-25 20:08:49,614 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277416,277429] [2021-11-25 20:08:49,615 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277567,277580] [2021-11-25 20:08:49,616 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277722,277735] [2021-11-25 20:08:49,616 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277874,277887] [2021-11-25 20:08:49,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278029,278042] [2021-11-25 20:08:49,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278193,278206] [2021-11-25 20:08:49,618 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278349,278362] [2021-11-25 20:08:49,619 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278513,278526] [2021-11-25 20:08:49,620 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278655,278668] [2021-11-25 20:08:49,620 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278813,278826] [2021-11-25 20:08:49,621 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278980,278993] [2021-11-25 20:08:49,622 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279139,279152] [2021-11-25 20:08:49,622 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279298,279311] [2021-11-25 20:08:49,622 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279447,279460] [2021-11-25 20:08:49,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279594,279607] [2021-11-25 20:08:49,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279733,279746] [2021-11-25 20:08:49,624 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279896,279909] [2021-11-25 20:08:49,624 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280062,280075] [2021-11-25 20:08:49,626 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280226,280239] [2021-11-25 20:08:49,626 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280391,280404] [2021-11-25 20:08:49,627 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280556,280569] [2021-11-25 20:08:49,627 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280722,280735] [2021-11-25 20:08:49,627 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280887,280900] [2021-11-25 20:08:49,628 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281054,281067] [2021-11-25 20:08:49,628 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281214,281227] [2021-11-25 20:08:49,629 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281376,281389] [2021-11-25 20:08:49,629 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281535,281548] [2021-11-25 20:08:49,630 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281681,281694] [2021-11-25 20:08:49,630 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281824,281837] [2021-11-25 20:08:49,630 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281968,281981] [2021-11-25 20:08:49,631 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282111,282124] [2021-11-25 20:08:49,631 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282255,282268] [2021-11-25 20:08:49,632 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282396,282409] [2021-11-25 20:08:49,633 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282534,282547] [2021-11-25 20:08:49,633 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282692,282705] [2021-11-25 20:08:49,634 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282851,282864] [2021-11-25 20:08:49,634 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283007,283020] [2021-11-25 20:08:49,634 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283156,283169] [2021-11-25 20:08:49,635 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283308,283321] [2021-11-25 20:08:49,636 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283459,283472] [2021-11-25 20:08:49,636 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283608,283621] [2021-11-25 20:08:49,637 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283760,283773] [2021-11-25 20:08:49,637 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283908,283921] [2021-11-25 20:08:49,638 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284061,284074] [2021-11-25 20:08:49,638 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284212,284225] [2021-11-25 20:08:49,638 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284362,284375] [2021-11-25 20:08:49,639 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284509,284522] [2021-11-25 20:08:49,639 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284660,284673] [2021-11-25 20:08:49,640 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284811,284824] [2021-11-25 20:08:49,640 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284959,284972] [2021-11-25 20:08:49,640 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285125,285138] [2021-11-25 20:08:49,641 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285294,285307] [2021-11-25 20:08:49,641 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285461,285474] [2021-11-25 20:08:49,642 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285629,285642] [2021-11-25 20:08:49,642 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285779,285792] [2021-11-25 20:08:49,644 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285926,285939] [2021-11-25 20:08:49,644 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[286087,286100] [2021-11-25 20:08:49,644 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[286257,286270] [2021-11-25 20:08:49,646 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_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[286419,286432] [2021-11-25 20:08:49,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:08:49,689 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:08:49,964 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273031,273044] [2021-11-25 20:08:49,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273176,273189] [2021-11-25 20:08:49,966 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273322,273335] [2021-11-25 20:08:49,967 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273487,273500] [2021-11-25 20:08:49,967 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273645,273658] [2021-11-25 20:08:49,967 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273803,273816] [2021-11-25 20:08:49,968 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[273961,273974] [2021-11-25 20:08:49,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274121,274134] [2021-11-25 20:08:49,973 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274280,274293] [2021-11-25 20:08:49,973 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274419,274432] [2021-11-25 20:08:49,974 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274561,274574] [2021-11-25 20:08:49,975 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274710,274723] [2021-11-25 20:08:49,975 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[274849,274862] [2021-11-25 20:08:49,975 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275004,275017] [2021-11-25 20:08:49,976 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275164,275177] [2021-11-25 20:08:49,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275315,275328] [2021-11-25 20:08:49,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275466,275479] [2021-11-25 20:08:49,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275618,275631] [2021-11-25 20:08:49,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275767,275780] [2021-11-25 20:08:49,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[275915,275928] [2021-11-25 20:08:49,980 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276072,276085] [2021-11-25 20:08:49,980 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276221,276234] [2021-11-25 20:08:49,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276377,276390] [2021-11-25 20:08:49,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276530,276543] [2021-11-25 20:08:49,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276676,276689] [2021-11-25 20:08:49,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276819,276832] [2021-11-25 20:08:49,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[276971,276984] [2021-11-25 20:08:49,984 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277117,277130] [2021-11-25 20:08:49,984 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277262,277275] [2021-11-25 20:08:49,984 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277416,277429] [2021-11-25 20:08:49,985 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277567,277580] [2021-11-25 20:08:49,985 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277722,277735] [2021-11-25 20:08:49,986 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[277874,277887] [2021-11-25 20:08:49,987 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278029,278042] [2021-11-25 20:08:49,987 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278193,278206] [2021-11-25 20:08:49,988 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278349,278362] [2021-11-25 20:08:49,988 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278513,278526] [2021-11-25 20:08:49,989 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278655,278668] [2021-11-25 20:08:49,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278813,278826] [2021-11-25 20:08:49,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[278980,278993] [2021-11-25 20:08:49,991 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279139,279152] [2021-11-25 20:08:49,992 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279298,279311] [2021-11-25 20:08:49,993 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279447,279460] [2021-11-25 20:08:49,993 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279594,279607] [2021-11-25 20:08:49,993 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279733,279746] [2021-11-25 20:08:49,994 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[279896,279909] [2021-11-25 20:08:49,994 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280062,280075] [2021-11-25 20:08:49,994 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280226,280239] [2021-11-25 20:08:49,995 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280391,280404] [2021-11-25 20:08:49,995 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280556,280569] [2021-11-25 20:08:49,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280722,280735] [2021-11-25 20:08:49,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[280887,280900] [2021-11-25 20:08:49,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281054,281067] [2021-11-25 20:08:49,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281214,281227] [2021-11-25 20:08:49,998 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281376,281389] [2021-11-25 20:08:49,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281535,281548] [2021-11-25 20:08:50,002 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281681,281694] [2021-11-25 20:08:50,002 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281824,281837] [2021-11-25 20:08:50,003 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[281968,281981] [2021-11-25 20:08:50,003 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282111,282124] [2021-11-25 20:08:50,004 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282255,282268] [2021-11-25 20:08:50,004 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282396,282409] [2021-11-25 20:08:50,005 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282534,282547] [2021-11-25 20:08:50,005 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282692,282705] [2021-11-25 20:08:50,006 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[282851,282864] [2021-11-25 20:08:50,012 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283007,283020] [2021-11-25 20:08:50,012 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283156,283169] [2021-11-25 20:08:50,012 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283308,283321] [2021-11-25 20:08:50,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283459,283472] [2021-11-25 20:08:50,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283608,283621] [2021-11-25 20:08:50,014 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283760,283773] [2021-11-25 20:08:50,019 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[283908,283921] [2021-11-25 20:08:50,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284061,284074] [2021-11-25 20:08:50,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284212,284225] [2021-11-25 20:08:50,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284362,284375] [2021-11-25 20:08:50,021 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284509,284522] [2021-11-25 20:08:50,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284660,284673] [2021-11-25 20:08:50,026 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284811,284824] [2021-11-25 20:08:50,027 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[284959,284972] [2021-11-25 20:08:50,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285125,285138] [2021-11-25 20:08:50,029 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285294,285307] [2021-11-25 20:08:50,029 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285461,285474] [2021-11-25 20:08:50,030 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285629,285642] [2021-11-25 20:08:50,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285779,285792] [2021-11-25 20:08:50,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[285926,285939] [2021-11-25 20:08:50,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[286087,286100] [2021-11-25 20:08:50,032 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[286257,286270] [2021-11-25 20:08:50,032 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/sv-benchmarks/c/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i[286419,286432] [2021-11-25 20:08:50,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:08:50,254 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:08:50,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:50 WrapperNode [2021-11-25 20:08:50,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:08:50,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:08:50,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:08:50,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:08:50,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:50" (1/1) ... [2021-11-25 20:08:50,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:50" (1/1) ... [2021-11-25 20:08:50,454 INFO L137 Inliner]: procedures = 526, calls = 1327, calls flagged for inlining = 223, calls inlined = 134, statements flattened = 2372 [2021-11-25 20:08:50,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:08:50,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:08:50,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:08:50,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:08:50,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:50" (1/1) ... [2021-11-25 20:08:50,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:50" (1/1) ... [2021-11-25 20:08:50,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:50" (1/1) ... [2021-11-25 20:08:50,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:50" (1/1) ... [2021-11-25 20:08:50,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:50" (1/1) ... [2021-11-25 20:08:50,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:50" (1/1) ... [2021-11-25 20:08:50,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:50" (1/1) ... [2021-11-25 20:08:50,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:08:50,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:08:50,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:08:50,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:08:50,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:50" (1/1) ... [2021-11-25 20:08:50,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:08:50,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:08:50,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:08:50,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:08:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2021-11-25 20:08:50,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2021-11-25 20:08:50,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:08:50,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:08:50,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-25 20:08:50,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2021-11-25 20:08:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-25 20:08:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-25 20:08:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:08:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:08:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2021-11-25 20:08:50,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2021-11-25 20:08:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2021-11-25 20:08:50,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2021-11-25 20:08:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_read_buffer_lock_of_lego_usb_tower [2021-11-25 20:08:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_read_buffer_lock_of_lego_usb_tower [2021-11-25 20:08:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:08:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:08:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:08:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:08:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2021-11-25 20:08:50,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2021-11-25 20:08:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:08:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 20:08:50,824 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 20:08:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2021-11-25 20:08:50,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2021-11-25 20:08:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 20:08:50,825 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 20:08:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:08:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2021-11-25 20:08:50,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2021-11-25 20:08:50,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:08:50,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:08:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_112 [2021-11-25 20:08:50,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_112 [2021-11-25 20:08:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-25 20:08:50,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2021-11-25 20:08:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:08:50,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2021-11-25 20:08:50,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2021-11-25 20:08:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-25 20:08:50,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-25 20:08:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2021-11-25 20:08:50,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2021-11-25 20:08:50,827 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-25 20:08:50,827 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-25 20:08:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 20:08:50,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 20:08:50,828 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-11-25 20:08:50,828 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-11-25 20:08:50,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2021-11-25 20:08:50,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2021-11-25 20:08:50,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_open_disc_mutex [2021-11-25 20:08:50,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_open_disc_mutex [2021-11-25 20:08:50,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_lock_of_lego_usb_tower [2021-11-25 20:08:50,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_unlock_lock_of_lego_usb_tower [2021-11-25 20:08:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-25 20:08:50,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2021-11-25 20:08:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:08:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:08:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:08:50,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:08:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:08:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-25 20:08:50,835 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-25 20:08:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:08:50,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:08:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-25 20:08:50,836 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-25 20:08:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_irq_check_alloc_flags [2021-11-25 20:08:50,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_irq_check_alloc_flags [2021-11-25 20:08:50,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2021-11-25 20:08:50,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2021-11-25 20:08:50,838 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-25 20:08:50,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-25 20:08:50,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_open_disc_mutex [2021-11-25 20:08:50,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_open_disc_mutex [2021-11-25 20:08:50,838 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-11-25 20:08:50,838 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-11-25 20:08:50,839 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-25 20:08:50,839 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-25 20:08:50,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:08:50,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:08:50,839 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-25 20:08:50,839 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-25 20:08:50,839 INFO L130 BoogieDeclarations]: Found specification of procedure tower_disconnect [2021-11-25 20:08:50,840 INFO L138 BoogieDeclarations]: Found implementation of procedure tower_disconnect [2021-11-25 20:08:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:08:50,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:08:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:08:50,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:08:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-25 20:08:50,840 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-25 20:08:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2021-11-25 20:08:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2021-11-25 20:08:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_free_urb [2021-11-25 20:08:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_free_urb [2021-11-25 20:08:50,841 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2021-11-25 20:08:50,841 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2021-11-25 20:08:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2021-11-25 20:08:50,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2021-11-25 20:08:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_lock_of_lego_usb_tower [2021-11-25 20:08:50,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_lock_of_lego_usb_tower [2021-11-25 20:08:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:08:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 20:08:50,842 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 20:08:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-25 20:08:50,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2021-11-25 20:08:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:08:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:08:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 20:08:50,843 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 20:08:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-25 20:08:50,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2021-11-25 20:08:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-25 20:08:50,844 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-25 20:08:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:08:50,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:08:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_mutex_mutex_lock_interruptible_or_killable_lock_of_lego_usb_tower [2021-11-25 20:08:50,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_mutex_mutex_lock_interruptible_or_killable_lock_of_lego_usb_tower [2021-11-25 20:08:50,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2021-11-25 20:08:50,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_alloc_usb_lock_check_alloc_flags [2021-11-25 20:08:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_usb_alloc_urb [2021-11-25 20:08:50,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_usb_alloc_urb [2021-11-25 20:08:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-25 20:08:50,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2021-11-25 20:08:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 20:08:50,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 20:08:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2021-11-25 20:08:50,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2021-11-25 20:08:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-25 20:08:50,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-25 20:08:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-25 20:08:50,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2021-11-25 20:08:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-11-25 20:08:50,848 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-11-25 20:08:50,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_read_buffer_lock_of_lego_usb_tower [2021-11-25 20:08:50,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_unlock_read_buffer_lock_of_lego_usb_tower [2021-11-25 20:08:50,848 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 20:08:50,848 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 20:08:50,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 20:08:50,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 20:08:50,849 INFO L130 BoogieDeclarations]: Found specification of procedure tower_delete [2021-11-25 20:08:50,849 INFO L138 BoogieDeclarations]: Found implementation of procedure tower_delete [2021-11-25 20:08:50,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:08:50,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-25 20:08:50,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2021-11-25 20:08:50,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:08:50,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:08:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-25 20:08:50,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2021-11-25 20:08:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 20:08:50,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 20:08:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:08:50,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:08:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-25 20:08:50,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2021-11-25 20:08:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure tower_check_for_read_packet [2021-11-25 20:08:50,851 INFO L138 BoogieDeclarations]: Found implementation of procedure tower_check_for_read_packet [2021-11-25 20:08:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:08:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure tower_abort_transfers [2021-11-25 20:08:50,851 INFO L138 BoogieDeclarations]: Found implementation of procedure tower_abort_transfers [2021-11-25 20:08:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_111 [2021-11-25 20:08:50,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_111 [2021-11-25 20:08:51,333 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:08:51,338 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:08:51,590 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:08:54,801 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:08:55,174 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:08:55,174 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:08:55,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:08:55 BoogieIcfgContainer [2021-11-25 20:08:55,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:08:55,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:08:55,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:08:55,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:08:55,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:08:46" (1/3) ... [2021-11-25 20:08:55,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e8ee67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:08:55, skipping insertion in model container [2021-11-25 20:08:55,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:08:50" (2/3) ... [2021-11-25 20:08:55,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e8ee67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:08:55, skipping insertion in model container [2021-11-25 20:08:55,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:08:55" (3/3) ... [2021-11-25 20:08:55,188 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--usb--misc--legousbtower.ko.cil.i [2021-11-25 20:08:55,193 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:08:55,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-25 20:08:55,265 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:08:55,270 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 [2021-11-25 20:08:55,270 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-25 20:08:55,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 785 states, 439 states have (on average 1.328018223234624) internal successors, (583), 484 states have internal predecessors, (583), 240 states have call successors, (240), 76 states have call predecessors, (240), 75 states have return successors, (235), 232 states have call predecessors, (235), 235 states have call successors, (235) [2021-11-25 20:08:55,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 20:08:55,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:55,316 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] [2021-11-25 20:08:55,317 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_linux_arch_io_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:08:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash -755514272, now seen corresponding path program 1 times [2021-11-25 20:08:55,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:55,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602943616] [2021-11-25 20:08:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:55,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:08:55,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:55,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602943616] [2021-11-25 20:08:55,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602943616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:08:55,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:08:55,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:08:55,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074863621] [2021-11-25 20:08:55,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:08:55,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:08:55,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:55,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:08:55,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:08:56,002 INFO L87 Difference]: Start difference. First operand has 785 states, 439 states have (on average 1.328018223234624) internal successors, (583), 484 states have internal predecessors, (583), 240 states have call successors, (240), 76 states have call predecessors, (240), 75 states have return successors, (235), 232 states have call predecessors, (235), 235 states have call successors, (235) 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) [2021-11-25 20:08:57,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:57,917 INFO L93 Difference]: Finished difference Result 1533 states and 2159 transitions. [2021-11-25 20:08:57,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:08:57,919 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 [2021-11-25 20:08:57,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:57,939 INFO L225 Difference]: With dead ends: 1533 [2021-11-25 20:08:57,939 INFO L226 Difference]: Without dead ends: 770 [2021-11-25 20:08:57,947 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 [2021-11-25 20:08:57,951 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 1003 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:57,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 1792 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 20:08:57,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-11-25 20:08:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2021-11-25 20:08:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 432 states have (on average 1.25) internal successors, (540), 472 states have internal predecessors, (540), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:08:58,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1008 transitions. [2021-11-25 20:08:58,072 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1008 transitions. Word has length 51 [2021-11-25 20:08:58,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:58,073 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 1008 transitions. [2021-11-25 20:08:58,074 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) [2021-11-25 20:08:58,074 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1008 transitions. [2021-11-25 20:08:58,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-25 20:08:58,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:58,077 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] [2021-11-25 20:08:58,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:08:58,078 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_linux_block_genhd_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:08:58,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:58,079 INFO L85 PathProgramCache]: Analyzing trace with hash 713201568, now seen corresponding path program 1 times [2021-11-25 20:08:58,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:58,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019744657] [2021-11-25 20:08:58,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:58,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:08:58,317 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:58,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019744657] [2021-11-25 20:08:58,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019744657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:08:58,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:08:58,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:08:58,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944943823] [2021-11-25 20:08:58,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:08:58,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:08:58,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:58,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:08:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:08:58,321 INFO L87 Difference]: Start difference. First operand 770 states and 1008 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) [2021-11-25 20:08:59,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:59,667 INFO L93 Difference]: Finished difference Result 770 states and 1008 transitions. [2021-11-25 20:08:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:08:59,668 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 [2021-11-25 20:08:59,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:59,674 INFO L225 Difference]: With dead ends: 770 [2021-11-25 20:08:59,675 INFO L226 Difference]: Without dead ends: 768 [2021-11-25 20:08:59,675 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 [2021-11-25 20:08:59,676 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 983 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:59,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 1756 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:08:59,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-11-25 20:08:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2021-11-25 20:08:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 431 states have (on average 1.248259860788863) internal successors, (538), 470 states have internal predecessors, (538), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:08:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1006 transitions. [2021-11-25 20:08:59,736 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1006 transitions. Word has length 56 [2021-11-25 20:08:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:59,737 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 1006 transitions. [2021-11-25 20:08:59,737 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) [2021-11-25 20:08:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1006 transitions. [2021-11-25 20:08:59,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 20:08:59,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:59,740 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] [2021-11-25 20:08:59,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:08:59,741 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_linux_block_queue_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:08:59,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:59,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1190308738, now seen corresponding path program 1 times [2021-11-25 20:08:59,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:59,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238894901] [2021-11-25 20:08:59,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:59,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:08:59,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:59,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238894901] [2021-11-25 20:08:59,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238894901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:08:59,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:08:59,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:08:59,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775228737] [2021-11-25 20:08:59,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:08:59,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:08:59,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:59,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:08:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:08:59,915 INFO L87 Difference]: Start difference. First operand 768 states and 1006 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) [2021-11-25 20:09:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:01,338 INFO L93 Difference]: Finished difference Result 768 states and 1006 transitions. [2021-11-25 20:09:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:01,339 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 [2021-11-25 20:09:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:01,346 INFO L225 Difference]: With dead ends: 768 [2021-11-25 20:09:01,346 INFO L226 Difference]: Without dead ends: 766 [2021-11-25 20:09:01,347 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 [2021-11-25 20:09:01,348 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 980 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:01,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 1752 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:09:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-11-25 20:09:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2021-11-25 20:09:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 430 states have (on average 1.2465116279069768) internal successors, (536), 468 states have internal predecessors, (536), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:09:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1004 transitions. [2021-11-25 20:09:01,412 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1004 transitions. Word has length 61 [2021-11-25 20:09:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:01,412 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 1004 transitions. [2021-11-25 20:09:01,413 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) [2021-11-25 20:09:01,413 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1004 transitions. [2021-11-25 20:09:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 20:09:01,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:01,416 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] [2021-11-25 20:09:01,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:09:01,416 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_linux_block_request_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1669124771, now seen corresponding path program 1 times [2021-11-25 20:09:01,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:01,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059852193] [2021-11-25 20:09:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:01,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:01,587 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:01,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:01,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059852193] [2021-11-25 20:09:01,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059852193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:01,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:01,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:01,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787223384] [2021-11-25 20:09:01,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:01,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:01,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:01,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:01,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:01,590 INFO L87 Difference]: Start difference. First operand 766 states and 1004 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) [2021-11-25 20:09:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:02,931 INFO L93 Difference]: Finished difference Result 766 states and 1004 transitions. [2021-11-25 20:09:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:02,932 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 [2021-11-25 20:09:02,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:02,939 INFO L225 Difference]: With dead ends: 766 [2021-11-25 20:09:02,939 INFO L226 Difference]: Without dead ends: 764 [2021-11-25 20:09:02,940 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 [2021-11-25 20:09:02,940 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 977 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:02,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 1748 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:09:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-11-25 20:09:02,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2021-11-25 20:09:02,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 429 states have (on average 1.2447552447552448) internal successors, (534), 466 states have internal predecessors, (534), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:09:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1002 transitions. [2021-11-25 20:09:03,000 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1002 transitions. Word has length 66 [2021-11-25 20:09:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:03,001 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 1002 transitions. [2021-11-25 20:09:03,001 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) [2021-11-25 20:09:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1002 transitions. [2021-11-25 20:09:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 20:09:03,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:03,005 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] [2021-11-25 20:09:03,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:09:03,006 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_linux_drivers_base_class_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:03,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1418737342, now seen corresponding path program 1 times [2021-11-25 20:09:03,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:03,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540077680] [2021-11-25 20:09:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:03,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:03,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:03,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540077680] [2021-11-25 20:09:03,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540077680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:03,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:03,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:03,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948437161] [2021-11-25 20:09:03,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:03,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:03,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:03,210 INFO L87 Difference]: Start difference. First operand 764 states and 1002 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) [2021-11-25 20:09:04,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:04,702 INFO L93 Difference]: Finished difference Result 764 states and 1002 transitions. [2021-11-25 20:09:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:04,703 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 [2021-11-25 20:09:04,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:04,709 INFO L225 Difference]: With dead ends: 764 [2021-11-25 20:09:04,709 INFO L226 Difference]: Without dead ends: 762 [2021-11-25 20:09:04,709 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 [2021-11-25 20:09:04,710 INFO L933 BasicCegarLoop]: 872 mSDtfsCounter, 974 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:04,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 1744 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 20:09:04,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-11-25 20:09:04,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 762. [2021-11-25 20:09:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 428 states have (on average 1.2429906542056075) internal successors, (532), 464 states have internal predecessors, (532), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:09:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1000 transitions. [2021-11-25 20:09:04,760 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1000 transitions. Word has length 71 [2021-11-25 20:09:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:04,761 INFO L470 AbstractCegarLoop]: Abstraction has 762 states and 1000 transitions. [2021-11-25 20:09:04,761 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) [2021-11-25 20:09:04,762 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1000 transitions. [2021-11-25 20:09:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 20:09:04,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:04,763 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] [2021-11-25 20:09:04,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:09:04,763 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_linux_fs_char_dev_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:04,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:04,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1499527610, now seen corresponding path program 1 times [2021-11-25 20:09:04,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:04,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125250101] [2021-11-25 20:09:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:04,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:04,888 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:04,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125250101] [2021-11-25 20:09:04,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125250101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:04,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:04,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:04,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549690874] [2021-11-25 20:09:04,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:04,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:04,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:04,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:04,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:04,890 INFO L87 Difference]: Start difference. First operand 762 states and 1000 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) [2021-11-25 20:09:06,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:06,505 INFO L93 Difference]: Finished difference Result 762 states and 1000 transitions. [2021-11-25 20:09:06,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:06,506 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 [2021-11-25 20:09:06,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:06,511 INFO L225 Difference]: With dead ends: 762 [2021-11-25 20:09:06,511 INFO L226 Difference]: Without dead ends: 760 [2021-11-25 20:09:06,512 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 [2021-11-25 20:09:06,513 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 971 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:06,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 1740 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 20:09:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-11-25 20:09:06,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2021-11-25 20:09:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 427 states have (on average 1.2412177985948478) internal successors, (530), 462 states have internal predecessors, (530), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:09:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 998 transitions. [2021-11-25 20:09:06,560 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 998 transitions. Word has length 76 [2021-11-25 20:09:06,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:06,561 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 998 transitions. [2021-11-25 20:09:06,561 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) [2021-11-25 20:09:06,561 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 998 transitions. [2021-11-25 20:09:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-25 20:09:06,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:06,563 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] [2021-11-25 20:09:06,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:09:06,564 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:06,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:06,565 INFO L85 PathProgramCache]: Analyzing trace with hash -21996419, now seen corresponding path program 1 times [2021-11-25 20:09:06,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:06,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109647943] [2021-11-25 20:09:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:06,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:06,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:06,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109647943] [2021-11-25 20:09:06,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109647943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:06,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:06,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:06,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840961925] [2021-11-25 20:09:06,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:06,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:06,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:06,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:06,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:06,727 INFO L87 Difference]: Start difference. First operand 760 states and 998 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) [2021-11-25 20:09:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:08,433 INFO L93 Difference]: Finished difference Result 760 states and 998 transitions. [2021-11-25 20:09:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:08,433 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 [2021-11-25 20:09:08,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:08,439 INFO L225 Difference]: With dead ends: 760 [2021-11-25 20:09:08,439 INFO L226 Difference]: Without dead ends: 758 [2021-11-25 20:09:08,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:09:08,441 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 968 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:08,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [970 Valid, 1736 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:09:08,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-11-25 20:09:08,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 758. [2021-11-25 20:09:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 426 states have (on average 1.2394366197183098) internal successors, (528), 460 states have internal predecessors, (528), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:09:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 996 transitions. [2021-11-25 20:09:08,488 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 996 transitions. Word has length 81 [2021-11-25 20:09:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:08,489 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 996 transitions. [2021-11-25 20:09:08,489 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) [2021-11-25 20:09:08,490 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 996 transitions. [2021-11-25 20:09:08,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 20:09:08,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:08,491 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] [2021-11-25 20:09:08,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:09:08,492 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1048481176, now seen corresponding path program 1 times [2021-11-25 20:09:08,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:08,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111985166] [2021-11-25 20:09:08,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:08,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:08,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:08,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111985166] [2021-11-25 20:09:08,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111985166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:08,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:08,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:08,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015781172] [2021-11-25 20:09:08,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:08,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:08,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:08,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:08,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:08,617 INFO L87 Difference]: Start difference. First operand 758 states and 996 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) [2021-11-25 20:09:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:09,946 INFO L93 Difference]: Finished difference Result 758 states and 996 transitions. [2021-11-25 20:09:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:09,947 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 [2021-11-25 20:09:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:09,953 INFO L225 Difference]: With dead ends: 758 [2021-11-25 20:09:09,953 INFO L226 Difference]: Without dead ends: 756 [2021-11-25 20:09:09,954 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 [2021-11-25 20:09:09,954 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 969 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:09,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 1728 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:09:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-25 20:09:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2021-11-25 20:09:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 425 states have (on average 1.2376470588235293) internal successors, (526), 458 states have internal predecessors, (526), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:09:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 994 transitions. [2021-11-25 20:09:10,012 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 994 transitions. Word has length 86 [2021-11-25 20:09:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:10,014 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 994 transitions. [2021-11-25 20:09:10,014 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) [2021-11-25 20:09:10,015 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 994 transitions. [2021-11-25 20:09:10,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 20:09:10,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:10,019 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:09:10,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:09:10,020 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_linux_kernel_locking_rwlock_check_final_stateErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:10,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:10,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1727039243, now seen corresponding path program 1 times [2021-11-25 20:09:10,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:10,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424935527] [2021-11-25 20:09:10,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:10,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:10,147 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:10,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424935527] [2021-11-25 20:09:10,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424935527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:10,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:10,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:10,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672572848] [2021-11-25 20:09:10,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:10,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:10,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:10,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:10,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:10,150 INFO L87 Difference]: Start difference. First operand 756 states and 994 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) [2021-11-25 20:09:11,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:11,770 INFO L93 Difference]: Finished difference Result 756 states and 994 transitions. [2021-11-25 20:09:11,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:11,770 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 [2021-11-25 20:09:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:11,775 INFO L225 Difference]: With dead ends: 756 [2021-11-25 20:09:11,776 INFO L226 Difference]: Without dead ends: 754 [2021-11-25 20:09:11,776 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 [2021-11-25 20:09:11,777 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 961 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:11,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 1728 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:09:11,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-11-25 20:09:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2021-11-25 20:09:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 424 states have (on average 1.2358490566037736) internal successors, (524), 456 states have internal predecessors, (524), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:09:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 992 transitions. [2021-11-25 20:09:11,833 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 992 transitions. Word has length 88 [2021-11-25 20:09:11,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:11,834 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 992 transitions. [2021-11-25 20:09:11,834 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) [2021-11-25 20:09:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 992 transitions. [2021-11-25 20:09:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 20:09:11,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:11,836 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] [2021-11-25 20:09:11,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:09:11,837 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_linux_kernel_module_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:11,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1479368770, now seen corresponding path program 1 times [2021-11-25 20:09:11,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:11,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259055342] [2021-11-25 20:09:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:11,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:11,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:11,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259055342] [2021-11-25 20:09:11,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259055342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:11,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:11,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:11,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457710586] [2021-11-25 20:09:11,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:11,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:11,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:11,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:11,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:11,956 INFO L87 Difference]: Start difference. First operand 754 states and 992 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) [2021-11-25 20:09:13,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:13,339 INFO L93 Difference]: Finished difference Result 754 states and 992 transitions. [2021-11-25 20:09:13,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:13,340 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 [2021-11-25 20:09:13,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:13,345 INFO L225 Difference]: With dead ends: 754 [2021-11-25 20:09:13,349 INFO L226 Difference]: Without dead ends: 752 [2021-11-25 20:09:13,350 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 [2021-11-25 20:09:13,351 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 960 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:13,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 1724 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:09:13,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-25 20:09:13,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2021-11-25 20:09:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 423 states have (on average 1.2340425531914894) internal successors, (522), 454 states have internal predecessors, (522), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:09:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 990 transitions. [2021-11-25 20:09:13,409 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 990 transitions. Word has length 93 [2021-11-25 20:09:13,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:13,410 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 990 transitions. [2021-11-25 20:09:13,410 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) [2021-11-25 20:09:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 990 transitions. [2021-11-25 20:09:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 20:09:13,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:13,414 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] [2021-11-25 20:09:13,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:09:13,415 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_linux_alloc_irq_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:13,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:13,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1530655077, now seen corresponding path program 1 times [2021-11-25 20:09:13,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:13,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781132740] [2021-11-25 20:09:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:13,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-25 20:09:13,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:13,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781132740] [2021-11-25 20:09:13,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781132740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:13,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:13,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:09:13,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260557259] [2021-11-25 20:09:13,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:13,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:09:13,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:13,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:09:13,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:09:13,681 INFO L87 Difference]: Start difference. First operand 752 states and 990 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-25 20:09:16,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:16,849 INFO L93 Difference]: Finished difference Result 752 states and 990 transitions. [2021-11-25 20:09:16,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:09:16,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2021-11-25 20:09:16,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:16,856 INFO L225 Difference]: With dead ends: 752 [2021-11-25 20:09:16,856 INFO L226 Difference]: Without dead ends: 750 [2021-11-25 20:09:16,857 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 [2021-11-25 20:09:16,858 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 953 mSDsluCounter, 2484 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:16,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [957 Valid, 2975 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-25 20:09:16,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-11-25 20:09:16,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2021-11-25 20:09:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 422 states have (on average 1.2322274881516588) internal successors, (520), 452 states have internal predecessors, (520), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:09:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 988 transitions. [2021-11-25 20:09:16,950 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 988 transitions. Word has length 127 [2021-11-25 20:09:16,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:16,951 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 988 transitions. [2021-11-25 20:09:16,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-25 20:09:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 988 transitions. [2021-11-25 20:09:16,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 20:09:16,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:16,954 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] [2021-11-25 20:09:16,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:09:16,954 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_linux_kernel_rcu_update_lock_bh_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:16,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:16,955 INFO L85 PathProgramCache]: Analyzing trace with hash -789603610, now seen corresponding path program 1 times [2021-11-25 20:09:16,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:16,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430110831] [2021-11-25 20:09:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:16,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:17,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:17,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430110831] [2021-11-25 20:09:17,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430110831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:17,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:17,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:17,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856335361] [2021-11-25 20:09:17,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:17,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:17,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:17,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:17,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:17,093 INFO L87 Difference]: Start difference. First operand 750 states and 988 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) [2021-11-25 20:09:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:18,694 INFO L93 Difference]: Finished difference Result 750 states and 988 transitions. [2021-11-25 20:09:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:18,695 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 [2021-11-25 20:09:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:18,700 INFO L225 Difference]: With dead ends: 750 [2021-11-25 20:09:18,700 INFO L226 Difference]: Without dead ends: 748 [2021-11-25 20:09:18,701 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 [2021-11-25 20:09:18,701 INFO L933 BasicCegarLoop]: 858 mSDtfsCounter, 955 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:18,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [957 Valid, 1716 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 20:09:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-11-25 20:09:18,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2021-11-25 20:09:18,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 421 states have (on average 1.2304038004750595) internal successors, (518), 450 states have internal predecessors, (518), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:09:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 986 transitions. [2021-11-25 20:09:18,775 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 986 transitions. Word has length 98 [2021-11-25 20:09:18,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:18,776 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 986 transitions. [2021-11-25 20:09:18,776 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) [2021-11-25 20:09:18,776 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 986 transitions. [2021-11-25 20:09:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-25 20:09:18,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:18,778 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] [2021-11-25 20:09:18,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:09:18,779 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_linux_kernel_rcu_update_lock_sched_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:18,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:18,779 INFO L85 PathProgramCache]: Analyzing trace with hash -595788342, now seen corresponding path program 1 times [2021-11-25 20:09:18,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:18,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112801527] [2021-11-25 20:09:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:18,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:18,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:18,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112801527] [2021-11-25 20:09:18,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112801527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:18,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:18,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:18,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432039631] [2021-11-25 20:09:18,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:18,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:18,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:18,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:18,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:18,925 INFO L87 Difference]: Start difference. First operand 748 states and 986 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) [2021-11-25 20:09:20,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:20,735 INFO L93 Difference]: Finished difference Result 748 states and 986 transitions. [2021-11-25 20:09:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:20,736 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 [2021-11-25 20:09:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:20,741 INFO L225 Difference]: With dead ends: 748 [2021-11-25 20:09:20,742 INFO L226 Difference]: Without dead ends: 746 [2021-11-25 20:09:20,742 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 [2021-11-25 20:09:20,743 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 952 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:20,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 1712 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-25 20:09:20,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-11-25 20:09:20,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2021-11-25 20:09:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 420 states have (on average 1.2285714285714286) internal successors, (516), 448 states have internal predecessors, (516), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:09:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 984 transitions. [2021-11-25 20:09:20,805 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 984 transitions. Word has length 103 [2021-11-25 20:09:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:20,806 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 984 transitions. [2021-11-25 20:09:20,806 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) [2021-11-25 20:09:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 984 transitions. [2021-11-25 20:09:20,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 20:09:20,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:20,809 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] [2021-11-25 20:09:20,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:09:20,809 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_linux_alloc_usb_lock_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:20,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:20,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2083542398, now seen corresponding path program 1 times [2021-11-25 20:09:20,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:20,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949254707] [2021-11-25 20:09:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:20,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-25 20:09:20,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:20,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949254707] [2021-11-25 20:09:20,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949254707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:20,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:20,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:09:20,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786711293] [2021-11-25 20:09:20,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:20,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:09:20,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:20,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:09:20,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:09:20,992 INFO L87 Difference]: Start difference. First operand 746 states and 984 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:09:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:21,956 INFO L93 Difference]: Finished difference Result 1457 states and 1925 transitions. [2021-11-25 20:09:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:09:21,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2021-11-25 20:09:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:21,962 INFO L225 Difference]: With dead ends: 1457 [2021-11-25 20:09:21,963 INFO L226 Difference]: Without dead ends: 742 [2021-11-25 20:09:21,965 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 [2021-11-25 20:09:21,966 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 946 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:21,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 852 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:09:21,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-11-25 20:09:22,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2021-11-25 20:09:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 417 states have (on average 1.225419664268585) internal successors, (511), 444 states have internal predecessors, (511), 235 states have call successors, (235), 75 states have call predecessors, (235), 74 states have return successors, (233), 230 states have call predecessors, (233), 233 states have call successors, (233) [2021-11-25 20:09:22,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 979 transitions. [2021-11-25 20:09:22,027 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 979 transitions. Word has length 133 [2021-11-25 20:09:22,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:22,028 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 979 transitions. [2021-11-25 20:09:22,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:09:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 979 transitions. [2021-11-25 20:09:22,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-25 20:09:22,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:22,031 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] [2021-11-25 20:09:22,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:09:22,031 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:22,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:22,032 INFO L85 PathProgramCache]: Analyzing trace with hash -859398086, now seen corresponding path program 1 times [2021-11-25 20:09:22,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:22,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891077380] [2021-11-25 20:09:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:22,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-25 20:09:22,180 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:22,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891077380] [2021-11-25 20:09:22,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891077380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:22,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:22,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:09:22,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951386493] [2021-11-25 20:09:22,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:22,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:09:22,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:09:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:09:22,183 INFO L87 Difference]: Start difference. First operand 742 states and 979 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-25 20:09:25,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:25,262 INFO L93 Difference]: Finished difference Result 1475 states and 1974 transitions. [2021-11-25 20:09:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:09:25,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 128 [2021-11-25 20:09:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:25,270 INFO L225 Difference]: With dead ends: 1475 [2021-11-25 20:09:25,270 INFO L226 Difference]: Without dead ends: 953 [2021-11-25 20:09:25,273 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 [2021-11-25 20:09:25,273 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 158 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 3773 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:25,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 3773 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-25 20:09:25,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2021-11-25 20:09:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 746. [2021-11-25 20:09:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 420 states have (on average 1.223809523809524) internal successors, (514), 447 states have internal predecessors, (514), 235 states have call successors, (235), 75 states have call predecessors, (235), 75 states have return successors, (236), 231 states have call predecessors, (236), 233 states have call successors, (236) [2021-11-25 20:09:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 985 transitions. [2021-11-25 20:09:25,348 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 985 transitions. Word has length 128 [2021-11-25 20:09:25,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:25,349 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 985 transitions. [2021-11-25 20:09:25,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-25 20:09:25,349 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 985 transitions. [2021-11-25 20:09:25,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-25 20:09:25,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:25,351 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] [2021-11-25 20:09:25,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:09:25,352 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_linux_kernel_rcu_update_lock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:25,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:25,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1867009636, now seen corresponding path program 1 times [2021-11-25 20:09:25,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:25,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464656281] [2021-11-25 20:09:25,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:25,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:25,487 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:25,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464656281] [2021-11-25 20:09:25,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464656281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:25,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:25,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:25,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849480057] [2021-11-25 20:09:25,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:25,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:25,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:25,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:25,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:25,491 INFO L87 Difference]: Start difference. First operand 746 states and 985 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) [2021-11-25 20:09:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:27,188 INFO L93 Difference]: Finished difference Result 746 states and 985 transitions. [2021-11-25 20:09:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:27,189 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 [2021-11-25 20:09:27,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:27,195 INFO L225 Difference]: With dead ends: 746 [2021-11-25 20:09:27,196 INFO L226 Difference]: Without dead ends: 744 [2021-11-25 20:09:27,196 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 [2021-11-25 20:09:27,197 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 944 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:27,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 1698 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:09:27,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-11-25 20:09:27,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2021-11-25 20:09:27,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 419 states have (on average 1.2219570405727924) internal successors, (512), 445 states have internal predecessors, (512), 235 states have call successors, (235), 75 states have call predecessors, (235), 75 states have return successors, (236), 231 states have call predecessors, (236), 233 states have call successors, (236) [2021-11-25 20:09:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 983 transitions. [2021-11-25 20:09:27,270 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 983 transitions. Word has length 108 [2021-11-25 20:09:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:27,270 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 983 transitions. [2021-11-25 20:09:27,271 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) [2021-11-25 20:09:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 983 transitions. [2021-11-25 20:09:27,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-25 20:09:27,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:27,273 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] [2021-11-25 20:09:27,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 20:09:27,273 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_linux_kernel_rcu_srcu_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:27,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:27,274 INFO L85 PathProgramCache]: Analyzing trace with hash -589445189, now seen corresponding path program 1 times [2021-11-25 20:09:27,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:27,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26711485] [2021-11-25 20:09:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:27,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:27,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:27,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26711485] [2021-11-25 20:09:27,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26711485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:27,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:27,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:27,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748623510] [2021-11-25 20:09:27,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:27,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:27,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:27,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:27,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:27,414 INFO L87 Difference]: Start difference. First operand 744 states and 983 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) [2021-11-25 20:09:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:29,075 INFO L93 Difference]: Finished difference Result 744 states and 983 transitions. [2021-11-25 20:09:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:29,075 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 [2021-11-25 20:09:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:29,081 INFO L225 Difference]: With dead ends: 744 [2021-11-25 20:09:29,081 INFO L226 Difference]: Without dead ends: 742 [2021-11-25 20:09:29,082 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 [2021-11-25 20:09:29,082 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 941 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:29,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 1694 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:09:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-11-25 20:09:29,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2021-11-25 20:09:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 418 states have (on average 1.2200956937799043) internal successors, (510), 443 states have internal predecessors, (510), 235 states have call successors, (235), 75 states have call predecessors, (235), 75 states have return successors, (236), 231 states have call predecessors, (236), 233 states have call successors, (236) [2021-11-25 20:09:29,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 981 transitions. [2021-11-25 20:09:29,156 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 981 transitions. Word has length 113 [2021-11-25 20:09:29,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:29,156 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 981 transitions. [2021-11-25 20:09:29,157 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) [2021-11-25 20:09:29,157 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 981 transitions. [2021-11-25 20:09:29,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-25 20:09:29,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:29,159 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 7, 4, 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] [2021-11-25 20:09:29,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 20:09:29,160 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:29,160 INFO L85 PathProgramCache]: Analyzing trace with hash 26511085, now seen corresponding path program 1 times [2021-11-25 20:09:29,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:29,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381137725] [2021-11-25 20:09:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:29,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-25 20:09:29,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:29,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381137725] [2021-11-25 20:09:29,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381137725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:29,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:29,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:09:29,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471604755] [2021-11-25 20:09:29,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:29,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:09:29,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:29,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:09:29,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:09:29,320 INFO L87 Difference]: Start difference. First operand 742 states and 981 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:09:31,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:31,673 INFO L93 Difference]: Finished difference Result 827 states and 1064 transitions. [2021-11-25 20:09:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:09:31,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 141 [2021-11-25 20:09:31,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:31,680 INFO L225 Difference]: With dead ends: 827 [2021-11-25 20:09:31,680 INFO L226 Difference]: Without dead ends: 825 [2021-11-25 20:09:31,680 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 [2021-11-25 20:09:31,681 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 856 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:31,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 2742 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 20:09:31,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2021-11-25 20:09:31,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 819. [2021-11-25 20:09:31,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 464 states have (on average 1.2155172413793103) internal successors, (564), 489 states have internal predecessors, (564), 247 states have call successors, (247), 94 states have call predecessors, (247), 94 states have return successors, (248), 243 states have call predecessors, (248), 245 states have call successors, (248) [2021-11-25 20:09:31,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1059 transitions. [2021-11-25 20:09:31,780 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1059 transitions. Word has length 141 [2021-11-25 20:09:31,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:31,781 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1059 transitions. [2021-11-25 20:09:31,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:09:31,782 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1059 transitions. [2021-11-25 20:09:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 20:09:31,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:31,784 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] [2021-11-25 20:09:31,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 20:09:31,785 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_linux_lib_idr_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:31,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2123503135, now seen corresponding path program 1 times [2021-11-25 20:09:31,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:31,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329257600] [2021-11-25 20:09:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:31,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:31,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:31,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329257600] [2021-11-25 20:09:31,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329257600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:31,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:31,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:31,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592015473] [2021-11-25 20:09:31,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:31,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:31,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:31,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:31,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:31,946 INFO L87 Difference]: Start difference. First operand 819 states and 1059 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) [2021-11-25 20:09:33,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:33,446 INFO L93 Difference]: Finished difference Result 819 states and 1059 transitions. [2021-11-25 20:09:33,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:33,447 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 [2021-11-25 20:09:33,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:33,453 INFO L225 Difference]: With dead ends: 819 [2021-11-25 20:09:33,453 INFO L226 Difference]: Without dead ends: 817 [2021-11-25 20:09:33,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:09:33,454 INFO L933 BasicCegarLoop]: 845 mSDtfsCounter, 938 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:33,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 1690 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 20:09:33,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-11-25 20:09:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2021-11-25 20:09:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 463 states have (on average 1.2138228941684666) internal successors, (562), 487 states have internal predecessors, (562), 247 states have call successors, (247), 94 states have call predecessors, (247), 94 states have return successors, (248), 243 states have call predecessors, (248), 245 states have call successors, (248) [2021-11-25 20:09:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1057 transitions. [2021-11-25 20:09:33,551 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1057 transitions. Word has length 118 [2021-11-25 20:09:33,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:33,551 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1057 transitions. [2021-11-25 20:09:33,552 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) [2021-11-25 20:09:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1057 transitions. [2021-11-25 20:09:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-25 20:09:33,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:33,554 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:09:33,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 20:09:33,555 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_linux_mmc_sdio_func_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:33,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1271434073, now seen corresponding path program 1 times [2021-11-25 20:09:33,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:33,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551947776] [2021-11-25 20:09:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:33,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:33,693 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:33,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551947776] [2021-11-25 20:09:33,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551947776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:33,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:33,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:33,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916128568] [2021-11-25 20:09:33,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:33,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:33,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:33,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:33,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:33,695 INFO L87 Difference]: Start difference. First operand 817 states and 1057 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) [2021-11-25 20:09:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:35,124 INFO L93 Difference]: Finished difference Result 817 states and 1057 transitions. [2021-11-25 20:09:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:35,124 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 [2021-11-25 20:09:35,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:35,132 INFO L225 Difference]: With dead ends: 817 [2021-11-25 20:09:35,132 INFO L226 Difference]: Without dead ends: 815 [2021-11-25 20:09:35,133 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 [2021-11-25 20:09:35,134 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 935 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:35,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 1686 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:09:35,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-11-25 20:09:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 815. [2021-11-25 20:09:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 462 states have (on average 1.2121212121212122) internal successors, (560), 485 states have internal predecessors, (560), 247 states have call successors, (247), 94 states have call predecessors, (247), 94 states have return successors, (248), 243 states have call predecessors, (248), 245 states have call successors, (248) [2021-11-25 20:09:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1055 transitions. [2021-11-25 20:09:35,219 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1055 transitions. Word has length 123 [2021-11-25 20:09:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:35,219 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1055 transitions. [2021-11-25 20:09:35,220 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) [2021-11-25 20:09:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1055 transitions. [2021-11-25 20:09:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-25 20:09:35,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:35,222 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] [2021-11-25 20:09:35,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 20:09:35,223 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_linux_net_rtnetlink_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:35,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:35,223 INFO L85 PathProgramCache]: Analyzing trace with hash -776981264, now seen corresponding path program 1 times [2021-11-25 20:09:35,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:35,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220658364] [2021-11-25 20:09:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:35,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:35,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:35,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220658364] [2021-11-25 20:09:35,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220658364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:35,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:35,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:35,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398444167] [2021-11-25 20:09:35,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:35,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:35,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:35,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:35,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:35,340 INFO L87 Difference]: Start difference. First operand 815 states and 1055 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) [2021-11-25 20:09:36,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:36,715 INFO L93 Difference]: Finished difference Result 815 states and 1055 transitions. [2021-11-25 20:09:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:36,716 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 [2021-11-25 20:09:36,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:36,721 INFO L225 Difference]: With dead ends: 815 [2021-11-25 20:09:36,722 INFO L226 Difference]: Without dead ends: 813 [2021-11-25 20:09:36,722 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 [2021-11-25 20:09:36,723 INFO L933 BasicCegarLoop]: 841 mSDtfsCounter, 932 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:36,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 1682 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:09:36,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-11-25 20:09:36,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2021-11-25 20:09:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 461 states have (on average 1.210412147505423) internal successors, (558), 483 states have internal predecessors, (558), 247 states have call successors, (247), 94 states have call predecessors, (247), 94 states have return successors, (248), 243 states have call predecessors, (248), 245 states have call successors, (248) [2021-11-25 20:09:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1053 transitions. [2021-11-25 20:09:36,812 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1053 transitions. Word has length 128 [2021-11-25 20:09:36,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:36,813 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 1053 transitions. [2021-11-25 20:09:36,813 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) [2021-11-25 20:09:36,813 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1053 transitions. [2021-11-25 20:09:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-25 20:09:36,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:36,817 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] [2021-11-25 20:09:36,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 20:09:36,817 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:36,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:36,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1006501242, now seen corresponding path program 1 times [2021-11-25 20:09:36,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:36,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966943130] [2021-11-25 20:09:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:36,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-25 20:09:36,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:36,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966943130] [2021-11-25 20:09:36,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966943130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:36,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:36,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:09:36,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905509127] [2021-11-25 20:09:36,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:36,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:09:36,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:36,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:09:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:09:36,985 INFO L87 Difference]: Start difference. First operand 813 states and 1053 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:09:37,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:37,836 INFO L93 Difference]: Finished difference Result 1522 states and 1950 transitions. [2021-11-25 20:09:37,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:09:37,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 157 [2021-11-25 20:09:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:37,843 INFO L225 Difference]: With dead ends: 1522 [2021-11-25 20:09:37,843 INFO L226 Difference]: Without dead ends: 809 [2021-11-25 20:09:37,846 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 [2021-11-25 20:09:37,846 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 954 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:37,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 837 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:09:37,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2021-11-25 20:09:37,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 809. [2021-11-25 20:09:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 458 states have (on average 1.2074235807860263) internal successors, (553), 479 states have internal predecessors, (553), 247 states have call successors, (247), 94 states have call predecessors, (247), 94 states have return successors, (248), 243 states have call predecessors, (248), 245 states have call successors, (248) [2021-11-25 20:09:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1048 transitions. [2021-11-25 20:09:37,938 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1048 transitions. Word has length 157 [2021-11-25 20:09:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:37,939 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 1048 transitions. [2021-11-25 20:09:37,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:09:37,939 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1048 transitions. [2021-11-25 20:09:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-25 20:09:37,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:37,943 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, 1, 1, 1, 1, 1] [2021-11-25 20:09:37,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 20:09:37,943 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:37,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2024158282, now seen corresponding path program 1 times [2021-11-25 20:09:37,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:37,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351820162] [2021-11-25 20:09:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:37,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-25 20:09:38,101 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:38,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351820162] [2021-11-25 20:09:38,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351820162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:38,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:38,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:09:38,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956840309] [2021-11-25 20:09:38,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:38,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:09:38,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:38,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:09:38,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:09:38,104 INFO L87 Difference]: Start difference. First operand 809 states and 1048 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 20:09:41,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:41,241 INFO L93 Difference]: Finished difference Result 1140 states and 1425 transitions. [2021-11-25 20:09:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:09:41,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 156 [2021-11-25 20:09:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:41,249 INFO L225 Difference]: With dead ends: 1140 [2021-11-25 20:09:41,250 INFO L226 Difference]: Without dead ends: 1138 [2021-11-25 20:09:41,250 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 [2021-11-25 20:09:41,251 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 662 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:41,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 3315 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-25 20:09:41,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-11-25 20:09:41,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1116. [2021-11-25 20:09:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 634 states have (on average 1.1845425867507886) internal successors, (751), 664 states have internal predecessors, (751), 327 states have call successors, (327), 146 states have call predecessors, (327), 145 states have return successors, (329), 315 states have call predecessors, (329), 325 states have call successors, (329) [2021-11-25 20:09:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1407 transitions. [2021-11-25 20:09:41,379 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1407 transitions. Word has length 156 [2021-11-25 20:09:41,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:41,380 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1407 transitions. [2021-11-25 20:09:41,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 20:09:41,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1407 transitions. [2021-11-25 20:09:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-25 20:09:41,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:41,383 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:09:41,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 20:09:41,384 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1732766365, now seen corresponding path program 1 times [2021-11-25 20:09:41,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:41,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871292670] [2021-11-25 20:09:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:41,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-11-25 20:09:41,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:41,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871292670] [2021-11-25 20:09:41,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871292670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:41,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:41,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:09:41,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122251036] [2021-11-25 20:09:41,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:41,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:09:41,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:41,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:09:41,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:09:41,659 INFO L87 Difference]: Start difference. First operand 1116 states and 1407 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 20:09:44,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:44,425 INFO L93 Difference]: Finished difference Result 1128 states and 1415 transitions. [2021-11-25 20:09:44,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:09:44,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 156 [2021-11-25 20:09:44,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:44,443 INFO L225 Difference]: With dead ends: 1128 [2021-11-25 20:09:44,443 INFO L226 Difference]: Without dead ends: 1126 [2021-11-25 20:09:44,444 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 [2021-11-25 20:09:44,454 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 163 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:44,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 3432 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 20:09:44,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-11-25 20:09:44,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1120. [2021-11-25 20:09:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 637 states have (on average 1.1821036106750393) internal successors, (753), 667 states have internal predecessors, (753), 327 states have call successors, (327), 147 states have call predecessors, (327), 146 states have return successors, (329), 315 states have call predecessors, (329), 325 states have call successors, (329) [2021-11-25 20:09:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1409 transitions. [2021-11-25 20:09:44,622 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1409 transitions. Word has length 156 [2021-11-25 20:09:44,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:44,623 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 1409 transitions. [2021-11-25 20:09:44,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 20:09:44,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1409 transitions. [2021-11-25 20:09:44,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 20:09:44,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:44,626 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] [2021-11-25 20:09:44,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 20:09:44,627 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_linux_net_sock_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:44,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:44,627 INFO L85 PathProgramCache]: Analyzing trace with hash 747183384, now seen corresponding path program 1 times [2021-11-25 20:09:44,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:44,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361196381] [2021-11-25 20:09:44,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:44,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:44,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:44,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361196381] [2021-11-25 20:09:44,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361196381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:44,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:44,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:44,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190321661] [2021-11-25 20:09:44,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:44,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:44,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:44,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:44,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:44,745 INFO L87 Difference]: Start difference. First operand 1120 states and 1409 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) [2021-11-25 20:09:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:46,160 INFO L93 Difference]: Finished difference Result 1120 states and 1409 transitions. [2021-11-25 20:09:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:46,161 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 [2021-11-25 20:09:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:46,169 INFO L225 Difference]: With dead ends: 1120 [2021-11-25 20:09:46,169 INFO L226 Difference]: Without dead ends: 1118 [2021-11-25 20:09:46,170 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 [2021-11-25 20:09:46,170 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 924 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:46,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [926 Valid, 1668 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:09:46,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2021-11-25 20:09:46,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1118. [2021-11-25 20:09:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 636 states have (on average 1.179245283018868) internal successors, (750), 665 states have internal predecessors, (750), 327 states have call successors, (327), 147 states have call predecessors, (327), 146 states have return successors, (329), 315 states have call predecessors, (329), 325 states have call successors, (329) [2021-11-25 20:09:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1406 transitions. [2021-11-25 20:09:46,305 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1406 transitions. Word has length 133 [2021-11-25 20:09:46,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:46,306 INFO L470 AbstractCegarLoop]: Abstraction has 1118 states and 1406 transitions. [2021-11-25 20:09:46,306 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) [2021-11-25 20:09:46,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1406 transitions. [2021-11-25 20:09:46,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-25 20:09:46,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:46,310 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] [2021-11-25 20:09:46,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 20:09:46,310 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:46,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:46,311 INFO L85 PathProgramCache]: Analyzing trace with hash 588382558, now seen corresponding path program 1 times [2021-11-25 20:09:46,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:46,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902474151] [2021-11-25 20:09:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:46,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-25 20:09:46,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:46,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902474151] [2021-11-25 20:09:46,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902474151] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:09:46,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589380756] [2021-11-25 20:09:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:46,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:09:46,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:09:46,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:09:46,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:09:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:47,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:09:47,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:09:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-25 20:09:47,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:09:47,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589380756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:47,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:09:47,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 20:09:47,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476208545] [2021-11-25 20:09:47,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:47,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:09:47,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:47,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:09:47,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:09:47,547 INFO L87 Difference]: Start difference. First operand 1118 states and 1406 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:09:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:48,378 INFO L93 Difference]: Finished difference Result 2128 states and 2654 transitions. [2021-11-25 20:09:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:09:48,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (23), 2 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 162 [2021-11-25 20:09:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:48,387 INFO L225 Difference]: With dead ends: 2128 [2021-11-25 20:09:48,387 INFO L226 Difference]: Without dead ends: 1136 [2021-11-25 20:09:48,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:09:48,391 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 871 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:48,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 892 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:09:48,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-11-25 20:09:48,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1134. [2021-11-25 20:09:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 643 states have (on average 1.1741835147744946) internal successors, (755), 672 states have internal predecessors, (755), 331 states have call successors, (331), 153 states have call predecessors, (331), 152 states have return successors, (333), 318 states have call predecessors, (333), 329 states have call successors, (333) [2021-11-25 20:09:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1419 transitions. [2021-11-25 20:09:48,527 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1419 transitions. Word has length 162 [2021-11-25 20:09:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:48,527 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1419 transitions. [2021-11-25 20:09:48,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:09:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1419 transitions. [2021-11-25 20:09:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 20:09:48,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:48,531 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] [2021-11-25 20:09:48,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:09:48,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-25 20:09:48,747 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_linux_usb_coherent_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:48,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:48,747 INFO L85 PathProgramCache]: Analyzing trace with hash 599413431, now seen corresponding path program 1 times [2021-11-25 20:09:48,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:48,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830064146] [2021-11-25 20:09:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:48,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:48,932 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:48,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830064146] [2021-11-25 20:09:48,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830064146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:48,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:48,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:48,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706757049] [2021-11-25 20:09:48,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:48,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:48,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:48,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:48,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:48,934 INFO L87 Difference]: Start difference. First operand 1134 states and 1419 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) [2021-11-25 20:09:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:50,600 INFO L93 Difference]: Finished difference Result 1134 states and 1419 transitions. [2021-11-25 20:09:50,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:50,600 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 [2021-11-25 20:09:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:50,607 INFO L225 Difference]: With dead ends: 1134 [2021-11-25 20:09:50,607 INFO L226 Difference]: Without dead ends: 1132 [2021-11-25 20:09:50,607 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 [2021-11-25 20:09:50,608 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 916 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:50,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 1654 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 20:09:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-11-25 20:09:50,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1132. [2021-11-25 20:09:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 642 states have (on average 1.1713395638629283) internal successors, (752), 670 states have internal predecessors, (752), 331 states have call successors, (331), 153 states have call predecessors, (331), 152 states have return successors, (333), 318 states have call predecessors, (333), 329 states have call successors, (333) [2021-11-25 20:09:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1416 transitions. [2021-11-25 20:09:50,747 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1416 transitions. Word has length 138 [2021-11-25 20:09:50,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:50,747 INFO L470 AbstractCegarLoop]: Abstraction has 1132 states and 1416 transitions. [2021-11-25 20:09:50,748 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) [2021-11-25 20:09:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1416 transitions. [2021-11-25 20:09:50,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-25 20:09:50,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:50,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:09:50,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 20:09:50,751 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:50,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash -664287172, now seen corresponding path program 1 times [2021-11-25 20:09:50,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:50,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478026001] [2021-11-25 20:09:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:50,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:50,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:50,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478026001] [2021-11-25 20:09:50,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478026001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:50,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:50,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:50,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279267023] [2021-11-25 20:09:50,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:50,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:50,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:50,876 INFO L87 Difference]: Start difference. First operand 1132 states and 1416 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) [2021-11-25 20:09:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:52,351 INFO L93 Difference]: Finished difference Result 1132 states and 1416 transitions. [2021-11-25 20:09:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:09:52,352 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 [2021-11-25 20:09:52,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:52,357 INFO L225 Difference]: With dead ends: 1132 [2021-11-25 20:09:52,358 INFO L226 Difference]: Without dead ends: 1130 [2021-11-25 20:09:52,358 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 [2021-11-25 20:09:52,359 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 913 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:52,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 1650 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 20:09:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2021-11-25 20:09:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1130. [2021-11-25 20:09:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 641 states have (on average 1.1684867394695788) internal successors, (749), 668 states have internal predecessors, (749), 331 states have call successors, (331), 153 states have call predecessors, (331), 152 states have return successors, (333), 318 states have call predecessors, (333), 329 states have call successors, (333) [2021-11-25 20:09:52,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1413 transitions. [2021-11-25 20:09:52,505 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1413 transitions. Word has length 143 [2021-11-25 20:09:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:52,506 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 1413 transitions. [2021-11-25 20:09:52,506 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) [2021-11-25 20:09:52,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1413 transitions. [2021-11-25 20:09:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-25 20:09:52,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:52,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:09:52,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 20:09:52,510 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:52,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:52,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1219793074, now seen corresponding path program 1 times [2021-11-25 20:09:52,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:52,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473316818] [2021-11-25 20:09:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:52,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-11-25 20:09:52,824 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:52,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473316818] [2021-11-25 20:09:52,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473316818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:52,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:52,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:09:52,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831442197] [2021-11-25 20:09:52,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:52,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:09:52,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:52,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:09:52,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:09:52,827 INFO L87 Difference]: Start difference. First operand 1130 states and 1413 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-25 20:09:57,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:09:57,939 INFO L93 Difference]: Finished difference Result 2635 states and 3461 transitions. [2021-11-25 20:09:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:09:57,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) Word has length 175 [2021-11-25 20:09:57,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:09:57,953 INFO L225 Difference]: With dead ends: 2635 [2021-11-25 20:09:57,953 INFO L226 Difference]: Without dead ends: 1558 [2021-11-25 20:09:57,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:09:57,958 INFO L933 BasicCegarLoop]: 1267 mSDtfsCounter, 231 mSDsluCounter, 8243 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 8552 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:09:57,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 8552 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-25 20:09:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-11-25 20:09:58,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1136. [2021-11-25 20:09:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 645 states have (on average 1.1674418604651162) internal successors, (753), 671 states have internal predecessors, (753), 332 states have call successors, (332), 153 states have call predecessors, (332), 153 states have return successors, (338), 321 states have call predecessors, (338), 330 states have call successors, (338) [2021-11-25 20:09:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1423 transitions. [2021-11-25 20:09:58,125 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1423 transitions. Word has length 175 [2021-11-25 20:09:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:09:58,125 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1423 transitions. [2021-11-25 20:09:58,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-25 20:09:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1423 transitions. [2021-11-25 20:09:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-25 20:09:58,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:09:58,129 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] [2021-11-25 20:09:58,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 20:09:58,131 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_linux_usb_urb_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:09:58,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:09:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1130880006, now seen corresponding path program 1 times [2021-11-25 20:09:58,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:09:58,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237135984] [2021-11-25 20:09:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:09:58,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:09:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:09:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 20:09:58,267 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:09:58,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237135984] [2021-11-25 20:09:58,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237135984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:09:58,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:09:58,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:09:58,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419628663] [2021-11-25 20:09:58,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:09:58,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:09:58,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:09:58,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:09:58,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:09:58,270 INFO L87 Difference]: Start difference. First operand 1136 states and 1423 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) [2021-11-25 20:10:00,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:10:00,301 INFO L93 Difference]: Finished difference Result 2161 states and 2698 transitions. [2021-11-25 20:10:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:10:00,302 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 [2021-11-25 20:10:00,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:10:00,317 INFO L225 Difference]: With dead ends: 2161 [2021-11-25 20:10:00,317 INFO L226 Difference]: Without dead ends: 1932 [2021-11-25 20:10:00,320 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 [2021-11-25 20:10:00,320 INFO L933 BasicCegarLoop]: 1034 mSDtfsCounter, 859 mSDsluCounter, 2035 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:10:00,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 2825 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-25 20:10:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2021-11-25 20:10:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1913. [2021-11-25 20:10:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1092 states have (on average 1.1794871794871795) internal successors, (1288), 1134 states have internal predecessors, (1288), 560 states have call successors, (560), 256 states have call predecessors, (560), 255 states have return successors, (577), 539 states have call predecessors, (577), 558 states have call successors, (577) [2021-11-25 20:10:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2425 transitions. [2021-11-25 20:10:00,632 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2425 transitions. Word has length 148 [2021-11-25 20:10:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:10:00,632 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 2425 transitions. [2021-11-25 20:10:00,633 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) [2021-11-25 20:10:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2425 transitions. [2021-11-25 20:10:00,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-25 20:10:00,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:10:00,635 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:10:00,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 20:10:00,636 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:10:00,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:10:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1344908209, now seen corresponding path program 1 times [2021-11-25 20:10:00,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:10:00,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035306088] [2021-11-25 20:10:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:10:00,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:10:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:10:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-11-25 20:10:01,428 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:10:01,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035306088] [2021-11-25 20:10:01,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035306088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:10:01,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:10:01,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 20:10:01,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693350986] [2021-11-25 20:10:01,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:10:01,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:10:01,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:10:01,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:10:01,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:10:01,430 INFO L87 Difference]: Start difference. First operand 1913 states and 2425 transitions. Second operand has 14 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 6 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-25 20:10:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:10:12,922 INFO L93 Difference]: Finished difference Result 5088 states and 6947 transitions. [2021-11-25 20:10:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:10:12,922 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 6 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) Word has length 188 [2021-11-25 20:10:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:10:12,946 INFO L225 Difference]: With dead ends: 5088 [2021-11-25 20:10:12,946 INFO L226 Difference]: Without dead ends: 3351 [2021-11-25 20:10:12,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:10:12,952 INFO L933 BasicCegarLoop]: 1640 mSDtfsCounter, 527 mSDsluCounter, 20783 mSDsCounter, 0 mSdLazyCounter, 3176 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 20045 SdHoareTripleChecker+Invalid, 3194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:10:12,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 20045 Invalid, 3194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3176 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2021-11-25 20:10:12,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2021-11-25 20:10:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 1949. [2021-11-25 20:10:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1110 states have (on average 1.1765765765765765) internal successors, (1306), 1154 states have internal predecessors, (1306), 574 states have call successors, (574), 258 states have call predecessors, (574), 259 states have return successors, (595), 553 states have call predecessors, (595), 572 states have call successors, (595) [2021-11-25 20:10:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2475 transitions. [2021-11-25 20:10:13,278 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2475 transitions. Word has length 188 [2021-11-25 20:10:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:10:13,279 INFO L470 AbstractCegarLoop]: Abstraction has 1949 states and 2475 transitions. [2021-11-25 20:10:13,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 6 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-25 20:10:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2475 transitions. [2021-11-25 20:10:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-25 20:10:13,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:10:13,282 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:10:13,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 20:10:13,283 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:10:13,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:10:13,283 INFO L85 PathProgramCache]: Analyzing trace with hash 507533396, now seen corresponding path program 1 times [2021-11-25 20:10:13,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:10:13,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780369576] [2021-11-25 20:10:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:10:13,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:10:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:10:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2021-11-25 20:10:13,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:10:13,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780369576] [2021-11-25 20:10:13,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780369576] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:10:13,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218238886] [2021-11-25 20:10:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:10:13,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:10:13,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:10:13,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:10:13,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:10:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:10:15,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-25 20:10:15,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:10:15,650 INFO L354 Elim1Store]: treesize reduction 1496, result has 4.7 percent of original size [2021-11-25 20:10:15,651 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 8 case distinctions, treesize of input 53 treesize of output 82 [2021-11-25 20:10:15,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:15,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 82 [2021-11-25 20:10:15,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 20:10:15,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 20:10:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-11-25 20:10:15,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:10:16,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218238886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:10:16,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:10:16,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2021-11-25 20:10:16,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88264356] [2021-11-25 20:10:16,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:10:16,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 20:10:16,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:10:16,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 20:10:16,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:10:16,002 INFO L87 Difference]: Start difference. First operand 1949 states and 2475 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 20:10:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:10:26,239 INFO L93 Difference]: Finished difference Result 3656 states and 4858 transitions. [2021-11-25 20:10:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 20:10:26,240 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 191 [2021-11-25 20:10:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:10:26,256 INFO L225 Difference]: With dead ends: 3656 [2021-11-25 20:10:26,256 INFO L226 Difference]: Without dead ends: 2652 [2021-11-25 20:10:26,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:10:26,261 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 350 mSDsluCounter, 4947 mSDsCounter, 0 mSdLazyCounter, 4518 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 5450 SdHoareTripleChecker+Invalid, 4794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 4518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:10:26,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 5450 Invalid, 4794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 4518 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2021-11-25 20:10:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2021-11-25 20:10:26,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 1993. [2021-11-25 20:10:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1135 states have (on average 1.1744493392070485) internal successors, (1333), 1181 states have internal predecessors, (1333), 588 states have call successors, (588), 259 states have call predecessors, (588), 264 states have return successors, (616), 569 states have call predecessors, (616), 586 states have call successors, (616) [2021-11-25 20:10:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2537 transitions. [2021-11-25 20:10:26,634 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2537 transitions. Word has length 191 [2021-11-25 20:10:26,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:10:26,634 INFO L470 AbstractCegarLoop]: Abstraction has 1993 states and 2537 transitions. [2021-11-25 20:10:26,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 20:10:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2537 transitions. [2021-11-25 20:10:26,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-25 20:10:26,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:10:26,638 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:10:26,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-25 20:10:26,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-25 20:10:26,859 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:10:26,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:10:26,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1823949991, now seen corresponding path program 1 times [2021-11-25 20:10:26,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:10:26,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715721507] [2021-11-25 20:10:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:10:26,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:10:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:10:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2021-11-25 20:10:27,131 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:10:27,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715721507] [2021-11-25 20:10:27,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715721507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:10:27,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:10:27,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:10:27,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077603399] [2021-11-25 20:10:27,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:10:27,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:10:27,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:10:27,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:10:27,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:10:27,134 INFO L87 Difference]: Start difference. First operand 1993 states and 2537 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 1 states have call successors, (30) [2021-11-25 20:10:31,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:10:31,208 INFO L93 Difference]: Finished difference Result 2169 states and 2806 transitions. [2021-11-25 20:10:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:10:31,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 1 states have call successors, (30) Word has length 180 [2021-11-25 20:10:31,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:10:31,223 INFO L225 Difference]: With dead ends: 2169 [2021-11-25 20:10:31,223 INFO L226 Difference]: Without dead ends: 2167 [2021-11-25 20:10:31,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:10:31,225 INFO L933 BasicCegarLoop]: 960 mSDtfsCounter, 196 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 5286 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:10:31,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 5286 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-25 20:10:31,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2021-11-25 20:10:31,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 2021. [2021-11-25 20:10:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 1153 states have (on average 1.1699913269731137) internal successors, (1349), 1199 states have internal predecessors, (1349), 592 states have call successors, (592), 267 states have call predecessors, (592), 270 states have return successors, (620), 571 states have call predecessors, (620), 590 states have call successors, (620) [2021-11-25 20:10:31,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2561 transitions. [2021-11-25 20:10:31,580 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2561 transitions. Word has length 180 [2021-11-25 20:10:31,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:10:31,580 INFO L470 AbstractCegarLoop]: Abstraction has 2021 states and 2561 transitions. [2021-11-25 20:10:31,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 1 states have call successors, (30) [2021-11-25 20:10:31,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2561 transitions. [2021-11-25 20:10:31,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-25 20:10:31,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:10:31,583 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:10:31,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 20:10:31,584 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:10:31,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:10:31,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1376963138, now seen corresponding path program 1 times [2021-11-25 20:10:31,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:10:31,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821341349] [2021-11-25 20:10:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:10:31,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:10:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:10:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2021-11-25 20:10:32,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:10:32,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821341349] [2021-11-25 20:10:32,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821341349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:10:32,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973950136] [2021-11-25 20:10:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:10:32,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:10:32,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:10:32,095 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:10:32,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:10:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:10:33,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-25 20:10:33,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:10:33,399 INFO L354 Elim1Store]: treesize reduction 520, result has 8.1 percent of original size [2021-11-25 20:10:33,403 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 5 case distinctions, treesize of input 38 treesize of output 55 [2021-11-25 20:10:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-11-25 20:10:33,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:10:33,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973950136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:10:33,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:10:33,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2021-11-25 20:10:33,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904276779] [2021-11-25 20:10:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:10:33,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 20:10:33,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:10:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 20:10:33,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:10:33,578 INFO L87 Difference]: Start difference. First operand 2021 states and 2561 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 20:10:42,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:10:42,392 INFO L93 Difference]: Finished difference Result 4497 states and 5925 transitions. [2021-11-25 20:10:42,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 20:10:42,393 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 192 [2021-11-25 20:10:42,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:10:42,405 INFO L225 Difference]: With dead ends: 4497 [2021-11-25 20:10:42,405 INFO L226 Difference]: Without dead ends: 2688 [2021-11-25 20:10:42,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:10:42,412 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 369 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 5271 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 5575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 5271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:10:42,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 3730 Invalid, 5575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 5271 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-25 20:10:42,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2021-11-25 20:10:42,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2018. [2021-11-25 20:10:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1151 states have (on average 1.1702867072111207) internal successors, (1347), 1197 states have internal predecessors, (1347), 592 states have call successors, (592), 268 states have call predecessors, (592), 269 states have return successors, (614), 569 states have call predecessors, (614), 590 states have call successors, (614) [2021-11-25 20:10:42,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2553 transitions. [2021-11-25 20:10:42,804 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2553 transitions. Word has length 192 [2021-11-25 20:10:42,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:10:42,805 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 2553 transitions. [2021-11-25 20:10:42,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 20:10:42,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2553 transitions. [2021-11-25 20:10:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-25 20:10:42,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:10:42,808 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:10:42,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:10:43,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:10:43,023 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ldv_linux_usb_urb_usb_free_urbErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_linux_usb_gadget_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_linux_fs_sysfs_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-25 20:10:43,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:10:43,023 INFO L85 PathProgramCache]: Analyzing trace with hash 378250115, now seen corresponding path program 1 times [2021-11-25 20:10:43,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:10:43,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625122158] [2021-11-25 20:10:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:10:43,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:10:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:10:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2021-11-25 20:10:43,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:10:43,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625122158] [2021-11-25 20:10:43,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625122158] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:10:43,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503910655] [2021-11-25 20:10:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:10:43,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:10:43,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:10:43,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:10:43,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58de9ae5-f02c-43cc-b138-b1015da0cac1/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:10:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:10:44,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 2396 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-25 20:10:44,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:10:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-25 20:10:44,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:10:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2021-11-25 20:10:45,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503910655] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:10:45,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [206549110] [2021-11-25 20:10:45,675 INFO L159 IcfgInterpreter]: Started Sifa with 113 locations of interest [2021-11-25 20:10:45,675 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:10:45,680 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:10:45,686 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:10:45,687 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:10:46,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:10:46,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:10:47,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:10:47,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:10:47,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:47,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 66 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 98 [2021-11-25 20:10:47,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 20:10:47,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:10:47,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 135 [2021-11-25 20:10:47,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:10:47,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:10:48,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:10:48,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:10:48,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:10:48,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:10:48,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 7 [2021-11-25 20:10:48,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:48,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:10:49,091 INFO L244 Elim1Store]: Index analysis took 130 ms [2021-11-25 20:10:49,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 55 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 91 [2021-11-25 20:10:49,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:10:49,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 20:15:34,346 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 [2021-11-25 20:15:34,366 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 [2021-11-25 20:17:08,036 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 [2021-11-25 20:17:08,080 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 [2021-11-25 20:17:08,111 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 [2021-11-25 20:17:09,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:17:09,822 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 20:17:09,823 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 717 treesize of output 712 [2021-11-25 20:17:09,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:17:09,953 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 20:17:09,954 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 717 treesize of output 712 [2021-11-25 20:17:10,207 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 [2021-11-25 20:20:06,362 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_undef_int with input of size 1396 for LOIs [2021-11-25 20:20:08,438 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_xmalloc with input of size 1420 for LOIs