./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba --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 a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:46:31,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:46:31,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:46:31,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:46:31,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:46:31,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:46:31,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:46:31,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:46:31,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:46:31,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:46:31,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:46:31,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:46:31,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:46:31,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:46:31,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:46:31,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:46:31,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:46:31,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:46:31,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:46:31,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:46:31,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:46:31,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:46:31,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:46:31,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:46:31,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:46:31,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:46:31,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:46:31,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:46:31,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:46:31,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:46:31,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:46:31,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:46:31,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:46:31,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:46:31,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:46:31,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:46:31,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:46:31,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:46:31,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:46:31,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:46:31,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:46:31,479 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:46:31,519 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:46:31,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:46:31,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:46:31,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:46:31,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:46:31,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:46:31,522 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:46:31,522 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:46:31,522 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:46:31,523 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:46:31,524 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:46:31,524 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:46:31,524 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:46:31,525 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:46:31,525 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:46:31,525 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:46:31,525 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:46:31,526 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:46:31,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:46:31,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:46:31,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:46:31,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:46:31,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:46:31,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:46:31,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:46:31,528 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:46:31,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:46:31,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:46:31,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:46:31,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:46:31,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:46:31,530 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:46:31,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:46:31,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:46:31,531 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:46:31,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:46:31,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:46:31,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:46:31,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 [2022-11-22 01:46:31,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:46:31,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:46:31,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:46:31,854 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:46:31,854 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:46:31,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2022-11-22 01:46:35,038 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:46:35,694 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:46:35,695 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2022-11-22 01:46:35,738 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/data/5ee1bbdc0/a5040e1af2f149368ce46dc2e40aac14/FLAGb90ca3cf9 [2022-11-22 01:46:35,754 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/data/5ee1bbdc0/a5040e1af2f149368ce46dc2e40aac14 [2022-11-22 01:46:35,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:46:35,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:46:35,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:46:35,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:46:35,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:46:35,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:46:35" (1/1) ... [2022-11-22 01:46:35,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658c62b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:35, skipping insertion in model container [2022-11-22 01:46:35,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:46:35" (1/1) ... [2022-11-22 01:46:35,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:46:35,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:46:38,937 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2022-11-22 01:46:38,941 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2022-11-22 01:46:38,942 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2022-11-22 01:46:38,942 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2022-11-22 01:46:38,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:46:38,992 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:46:39,418 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2022-11-22 01:46:39,418 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2022-11-22 01:46:39,419 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2022-11-22 01:46:39,419 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2022-11-22 01:46:39,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:46:39,663 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:46:39,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39 WrapperNode [2022-11-22 01:46:39,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:46:39,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:46:39,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:46:39,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:46:39,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39" (1/1) ... [2022-11-22 01:46:39,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39" (1/1) ... [2022-11-22 01:46:39,968 INFO L138 Inliner]: procedures = 459, calls = 1811, calls flagged for inlining = 217, calls inlined = 199, statements flattened = 4330 [2022-11-22 01:46:39,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:46:39,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:46:39,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:46:39,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:46:39,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39" (1/1) ... [2022-11-22 01:46:39,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39" (1/1) ... [2022-11-22 01:46:40,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39" (1/1) ... [2022-11-22 01:46:40,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39" (1/1) ... [2022-11-22 01:46:40,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39" (1/1) ... [2022-11-22 01:46:40,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39" (1/1) ... [2022-11-22 01:46:40,270 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39" (1/1) ... [2022-11-22 01:46:40,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39" (1/1) ... [2022-11-22 01:46:40,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:46:40,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:46:40,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:46:40,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:46:40,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39" (1/1) ... [2022-11-22 01:46:40,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:46:40,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:46:40,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:46:40,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10faa3b9-44ac-4615-a972-fe2f819bee6e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:46:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_set_multicast [2022-11-22 01:46:40,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_set_multicast [2022-11-22 01:46:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:46:40,433 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:46:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_rx_kick [2022-11-22 01:46:40,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_rx_kick [2022-11-22 01:46:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 01:46:40,434 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 01:46:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_do_reset [2022-11-22 01:46:40,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_do_reset [2022-11-22 01:46:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2022-11-22 01:46:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2022-11-22 01:46:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:46:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:46:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 01:46:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 01:46:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:46:40,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:46:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 01:46:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 01:46:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_62 [2022-11-22 01:46:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_62 [2022-11-22 01:46:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_73 [2022-11-22 01:46:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_73 [2022-11-22 01:46:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-22 01:46:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-22 01:46:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_remove_one [2022-11-22 01:46:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_remove_one [2022-11-22 01:46:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 01:46:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 01:46:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_update_stats [2022-11-22 01:46:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_update_stats [2022-11-22 01:46:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:46:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:46:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 01:46:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 01:46:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 01:46:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 01:46:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 01:46:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 01:46:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:46:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:46:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 01:46:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 01:46:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 01:46:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 01:46:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:46:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-22 01:46:40,444 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-22 01:46:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:46:40,444 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:46:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 01:46:40,445 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 01:46:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_tx_timeout [2022-11-22 01:46:40,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_tx_timeout [2022-11-22 01:46:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 01:46:40,445 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 01:46:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 01:46:40,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 01:46:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:46:40,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:46:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:46:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 01:46:40,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 01:46:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 01:46:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 01:46:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:46:40,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:46:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 01:46:40,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 01:46:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-22 01:46:40,449 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-22 01:46:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 01:46:40,449 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 01:46:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 01:46:40,450 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 01:46:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:46:40,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:46:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_run_bist [2022-11-22 01:46:40,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_run_bist [2022-11-22 01:46:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:46:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:46:40,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:46:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:46:40,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:46:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 01:46:40,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 01:46:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:46:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:46:40,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:46:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:46:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure clear_rx_desc [2022-11-22 01:46:40,453 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_rx_desc [2022-11-22 01:46:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure phy_intr [2022-11-22 01:46:40,454 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_intr [2022-11-22 01:46:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:46:40,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:46:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-22 01:46:40,454 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-22 01:46:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:46:40,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:46:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 01:46:40,455 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 01:46:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 01:46:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 01:46:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-22 01:46:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-22 01:46:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure do_tx_done [2022-11-22 01:46:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure do_tx_done [2022-11-22 01:46:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_misc_lock_of_ns83820 [2022-11-22 01:46:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_misc_lock_of_ns83820 [2022-11-22 01:46:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:46:40,462 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:46:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 01:46:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 01:46:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-22 01:46:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-22 01:46:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-22 01:46:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-22 01:46:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:46:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:46:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_stop [2022-11-22 01:46:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_stop [2022-11-22 01:46:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure kick_tx [2022-11-22 01:46:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_tx [2022-11-22 01:46:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rx_info [2022-11-22 01:46:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rx_info [2022-11-22 01:46:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:46:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:46:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-22 01:46:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-22 01:46:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:46:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:46:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-22 01:46:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-22 01:46:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-22 01:46:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-22 01:46:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 01:46:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 01:46:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 01:46:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 01:46:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-22 01:46:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-22 01:46:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-22 01:46:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-22 01:46:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 01:46:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 01:46:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 01:46:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 01:46:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 01:46:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 01:46:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-22 01:46:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-22 01:46:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2022-11-22 01:46:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2022-11-22 01:46:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-22 01:46:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-22 01:46:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:46:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_72 [2022-11-22 01:46:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_72 [2022-11-22 01:46:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:46:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:46:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 01:46:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 01:46:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-22 01:46:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-22 01:46:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-22 01:46:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-22 01:46:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:46:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:46:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 01:46:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 01:46:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-22 01:46:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-22 01:46:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 01:46:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 01:46:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 01:46:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 01:46:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_ns83820 [2022-11-22 01:46:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_ns83820 [2022-11-22 01:46:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2022-11-22 01:46:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2022-11-22 01:46:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure build_rx_desc [2022-11-22 01:46:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure build_rx_desc [2022-11-22 01:46:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:46:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-22 01:46:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-22 01:46:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:46:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:46:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 01:46:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 01:46:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_misc_lock_of_ns83820 [2022-11-22 01:46:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_misc_lock_of_ns83820 [2022-11-22 01:46:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-22 01:46:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-22 01:46:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_open [2022-11-22 01:46:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_open [2022-11-22 01:46:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:46:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:46:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-22 01:46:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-22 01:46:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure rx_irq [2022-11-22 01:46:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_irq [2022-11-22 01:46:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_disable_interrupts [2022-11-22 01:46:40,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_disable_interrupts [2022-11-22 01:46:40,482 INFO L130 BoogieDeclarations]: Found specification of procedure kick_rx [2022-11-22 01:46:40,483 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_rx [2022-11-22 01:46:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 01:46:40,483 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 01:46:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 01:46:40,483 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 01:46:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:46:40,483 INFO L130 BoogieDeclarations]: Found specification of procedure rx_refill [2022-11-22 01:46:40,483 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_refill [2022-11-22 01:46:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:46:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:46:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rx_info [2022-11-22 01:46:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rx_info [2022-11-22 01:46:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_ns83820 [2022-11-22 01:46:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_ns83820 [2022-11-22 01:46:41,340 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:46:41,343 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:46:41,474 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:46:44,486 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:46:44,701 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:46:45,966 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:46:45,966 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:46:45,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:46:45 BoogieIcfgContainer [2022-11-22 01:46:45,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:46:45,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:46:45,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:46:45,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:46:45,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:46:35" (1/3) ... [2022-11-22 01:46:45,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1e76da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:46:45, skipping insertion in model container [2022-11-22 01:46:45,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:46:39" (2/3) ... [2022-11-22 01:46:45,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1e76da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:46:45, skipping insertion in model container [2022-11-22 01:46:45,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:46:45" (3/3) ... [2022-11-22 01:46:45,990 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2022-11-22 01:46:46,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:46:46,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 01:46:46,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:46:46,127 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45302c4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:46:46,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 01:46:46,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 1364 states, 750 states have (on average 1.2333333333333334) internal successors, (925), 782 states have internal predecessors, (925), 508 states have call successors, (508), 104 states have call predecessors, (508), 103 states have return successors, (503), 499 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-22 01:46:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-22 01:46:46,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:46:46,151 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:46:46,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:46:46,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:46:46,157 INFO L85 PathProgramCache]: Analyzing trace with hash -101037226, now seen corresponding path program 1 times [2022-11-22 01:46:46,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:46:46,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227884486] [2022-11-22 01:46:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:46:46,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:46:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:46:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-22 01:46:46,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:46:46,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227884486] [2022-11-22 01:46:46,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227884486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:46:46,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:46:46,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:46:46,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144351961] [2022-11-22 01:46:46,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:46:46,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:46:46,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:46:46,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:46:46,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:46:46,974 INFO L87 Difference]: Start difference. First operand has 1364 states, 750 states have (on average 1.2333333333333334) internal successors, (925), 782 states have internal predecessors, (925), 508 states have call successors, (508), 104 states have call predecessors, (508), 103 states have return successors, (503), 499 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 01:46:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:46:49,624 INFO L93 Difference]: Finished difference Result 4001 states and 5836 transitions. [2022-11-22 01:46:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:46:49,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-11-22 01:46:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:46:49,660 INFO L225 Difference]: With dead ends: 4001 [2022-11-22 01:46:49,660 INFO L226 Difference]: Without dead ends: 2642 [2022-11-22 01:46:49,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:46:49,676 INFO L413 NwaCegarLoop]: 2172 mSDtfsCounter, 1848 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:46:49,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 3839 Invalid, 483 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 01:46:49,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2022-11-22 01:46:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2638. [2022-11-22 01:46:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 1460 states have (on average 1.2267123287671233) internal successors, (1791), 1522 states have internal predecessors, (1791), 972 states have call successors, (972), 204 states have call predecessors, (972), 203 states have return successors, (969), 961 states have call predecessors, (969), 969 states have call successors, (969) [2022-11-22 01:46:49,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3732 transitions. [2022-11-22 01:46:49,996 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3732 transitions. Word has length 87 [2022-11-22 01:46:49,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:46:49,997 INFO L495 AbstractCegarLoop]: Abstraction has 2638 states and 3732 transitions. [2022-11-22 01:46:49,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 01:46:49,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3732 transitions. [2022-11-22 01:46:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 01:46:50,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:46:50,014 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:46:50,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:46:50,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:46:50,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:46:50,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1275540832, now seen corresponding path program 1 times [2022-11-22 01:46:50,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:46:50,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173764096] [2022-11-22 01:46:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:46:50,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:46:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:46:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-22 01:46:50,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:46:50,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173764096] [2022-11-22 01:46:50,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173764096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:46:50,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:46:50,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:46:50,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979774944] [2022-11-22 01:46:50,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:46:50,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:46:50,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:46:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:46:50,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:46:50,436 INFO L87 Difference]: Start difference. First operand 2638 states and 3732 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 01:46:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:46:52,514 INFO L93 Difference]: Finished difference Result 5913 states and 8364 transitions. [2022-11-22 01:46:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:46:52,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-22 01:46:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:46:52,538 INFO L225 Difference]: With dead ends: 5913 [2022-11-22 01:46:52,539 INFO L226 Difference]: Without dead ends: 3290 [2022-11-22 01:46:52,552 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:46:52,555 INFO L413 NwaCegarLoop]: 2096 mSDtfsCounter, 1381 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 3739 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:46:52,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 3739 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 01:46:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2022-11-22 01:46:52,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3263. [2022-11-22 01:46:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 1810 states have (on average 1.2209944751381216) internal successors, (2210), 1890 states have internal predecessors, (2210), 1190 states have call successors, (1190), 261 states have call predecessors, (1190), 260 states have return successors, (1187), 1176 states have call predecessors, (1187), 1187 states have call successors, (1187) [2022-11-22 01:46:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4587 transitions. [2022-11-22 01:46:52,761 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4587 transitions. Word has length 99 [2022-11-22 01:46:52,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:46:52,763 INFO L495 AbstractCegarLoop]: Abstraction has 3263 states and 4587 transitions. [2022-11-22 01:46:52,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 01:46:52,764 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4587 transitions. [2022-11-22 01:46:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 01:46:52,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:46:52,767 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:46:52,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:46:52,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:46:52,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:46:52,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2058293716, now seen corresponding path program 1 times [2022-11-22 01:46:52,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:46:52,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842252101] [2022-11-22 01:46:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:46:52,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:46:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:46:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-22 01:46:53,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:46:53,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842252101] [2022-11-22 01:46:53,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842252101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:46:53,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:46:53,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:46:53,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912085721] [2022-11-22 01:46:53,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:46:53,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:46:53,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:46:53,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:46:53,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:46:53,017 INFO L87 Difference]: Start difference. First operand 3263 states and 4587 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 01:46:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:46:55,326 INFO L93 Difference]: Finished difference Result 7930 states and 11068 transitions. [2022-11-22 01:46:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:46:55,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-11-22 01:46:55,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:46:55,355 INFO L225 Difference]: With dead ends: 7930 [2022-11-22 01:46:55,356 INFO L226 Difference]: Without dead ends: 4682 [2022-11-22 01:46:55,371 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:46:55,372 INFO L413 NwaCegarLoop]: 2100 mSDtfsCounter, 1579 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:46:55,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 3730 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-22 01:46:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2022-11-22 01:46:55,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4653. [2022-11-22 01:46:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4653 states, 2574 states have (on average 1.207847707847708) internal successors, (3109), 2695 states have internal predecessors, (3109), 1670 states have call successors, (1670), 407 states have call predecessors, (1670), 406 states have return successors, (1670), 1649 states have call predecessors, (1670), 1667 states have call successors, (1670) [2022-11-22 01:46:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 6449 transitions. [2022-11-22 01:46:55,685 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 6449 transitions. Word has length 98 [2022-11-22 01:46:55,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:46:55,687 INFO L495 AbstractCegarLoop]: Abstraction has 4653 states and 6449 transitions. [2022-11-22 01:46:55,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-22 01:46:55,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 6449 transitions. [2022-11-22 01:46:55,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 01:46:55,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:46:55,695 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2022-11-22 01:46:55,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:46:55,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:46:55,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:46:55,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1504323666, now seen corresponding path program 1 times [2022-11-22 01:46:55,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:46:55,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170602291] [2022-11-22 01:46:55,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:46:55,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:46:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:46:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-22 01:46:55,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:46:55,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170602291] [2022-11-22 01:46:55,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170602291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:46:55,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:46:55,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:46:55,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905668641] [2022-11-22 01:46:55,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:46:55,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:46:55,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:46:55,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:46:55,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:46:55,931 INFO L87 Difference]: Start difference. First operand 4653 states and 6449 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 01:46:58,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:46:58,867 INFO L93 Difference]: Finished difference Result 12757 states and 17691 transitions. [2022-11-22 01:46:58,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:46:58,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2022-11-22 01:46:58,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:46:58,918 INFO L225 Difference]: With dead ends: 12757 [2022-11-22 01:46:58,918 INFO L226 Difference]: Without dead ends: 8119 [2022-11-22 01:46:58,940 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:46:58,945 INFO L413 NwaCegarLoop]: 2140 mSDtfsCounter, 1794 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:46:58,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1794 Valid, 3732 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-22 01:46:58,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8119 states. [2022-11-22 01:46:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8119 to 8086. [2022-11-22 01:46:59,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8086 states, 4476 states have (on average 1.2102323503127792) internal successors, (5417), 4696 states have internal predecessors, (5417), 2887 states have call successors, (2887), 724 states have call predecessors, (2887), 720 states have return successors, (2912), 2834 states have call predecessors, (2912), 2884 states have call successors, (2912) [2022-11-22 01:46:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 11216 transitions. [2022-11-22 01:46:59,578 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 11216 transitions. Word has length 102 [2022-11-22 01:46:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:46:59,580 INFO L495 AbstractCegarLoop]: Abstraction has 8086 states and 11216 transitions. [2022-11-22 01:46:59,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 01:46:59,581 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 11216 transitions. [2022-11-22 01:46:59,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-22 01:46:59,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:46:59,584 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2022-11-22 01:46:59,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:46:59,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:46:59,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:46:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash -126435291, now seen corresponding path program 1 times [2022-11-22 01:46:59,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:46:59,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494031037] [2022-11-22 01:46:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:46:59,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:46:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:46:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-22 01:46:59,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:46:59,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494031037] [2022-11-22 01:46:59,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494031037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:46:59,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:46:59,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:46:59,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149751154] [2022-11-22 01:46:59,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:46:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:46:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:46:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:46:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:46:59,893 INFO L87 Difference]: Start difference. First operand 8086 states and 11216 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-22 01:47:02,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:02,614 INFO L93 Difference]: Finished difference Result 22062 states and 30536 transitions. [2022-11-22 01:47:02,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:47:02,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2022-11-22 01:47:02,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:02,696 INFO L225 Difference]: With dead ends: 22062 [2022-11-22 01:47:02,697 INFO L226 Difference]: Without dead ends: 13991 [2022-11-22 01:47:02,729 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:47:02,730 INFO L413 NwaCegarLoop]: 2427 mSDtfsCounter, 1759 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 4077 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:02,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 4077 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 01:47:02,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13991 states. [2022-11-22 01:47:03,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13991 to 13956. [2022-11-22 01:47:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13956 states, 7792 states have (on average 1.2091889117043122) internal successors, (9422), 8148 states have internal predecessors, (9422), 4896 states have call successors, (4896), 1276 states have call predecessors, (4896), 1265 states have return successors, (4952), 4778 states have call predecessors, (4952), 4893 states have call successors, (4952) [2022-11-22 01:47:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13956 states to 13956 states and 19270 transitions. [2022-11-22 01:47:03,580 INFO L78 Accepts]: Start accepts. Automaton has 13956 states and 19270 transitions. Word has length 103 [2022-11-22 01:47:03,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:47:03,581 INFO L495 AbstractCegarLoop]: Abstraction has 13956 states and 19270 transitions. [2022-11-22 01:47:03,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-22 01:47:03,582 INFO L276 IsEmpty]: Start isEmpty. Operand 13956 states and 19270 transitions. [2022-11-22 01:47:03,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-22 01:47:03,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:47:03,583 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-22 01:47:03,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:47:03,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:47:03,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:47:03,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1103861875, now seen corresponding path program 1 times [2022-11-22 01:47:03,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:47:03,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521860278] [2022-11-22 01:47:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:47:03,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:47:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-22 01:47:03,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:47:03,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521860278] [2022-11-22 01:47:03,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521860278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:47:03,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:47:03,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:47:03,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185511525] [2022-11-22 01:47:03,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:47:03,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:47:03,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:47:03,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:47:03,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:47:03,987 INFO L87 Difference]: Start difference. First operand 13956 states and 19270 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 01:47:06,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:06,630 INFO L93 Difference]: Finished difference Result 13962 states and 19275 transitions. [2022-11-22 01:47:06,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:47:06,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 125 [2022-11-22 01:47:06,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:06,704 INFO L225 Difference]: With dead ends: 13962 [2022-11-22 01:47:06,704 INFO L226 Difference]: Without dead ends: 13960 [2022-11-22 01:47:06,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:47:06,714 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 1873 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 5007 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:06,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 5007 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-22 01:47:06,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13960 states. [2022-11-22 01:47:07,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13960 to 13960. [2022-11-22 01:47:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13960 states, 7795 states have (on average 1.209108402822322) internal successors, (9425), 8151 states have internal predecessors, (9425), 4896 states have call successors, (4896), 1277 states have call predecessors, (4896), 1266 states have return successors, (4952), 4778 states have call predecessors, (4952), 4893 states have call successors, (4952) [2022-11-22 01:47:07,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13960 states to 13960 states and 19273 transitions. [2022-11-22 01:47:07,903 INFO L78 Accepts]: Start accepts. Automaton has 13960 states and 19273 transitions. Word has length 125 [2022-11-22 01:47:07,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:47:07,903 INFO L495 AbstractCegarLoop]: Abstraction has 13960 states and 19273 transitions. [2022-11-22 01:47:07,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-22 01:47:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 13960 states and 19273 transitions. [2022-11-22 01:47:07,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-22 01:47:07,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:47:07,906 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:47:07,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:47:07,906 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:47:07,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:47:07,907 INFO L85 PathProgramCache]: Analyzing trace with hash -237327338, now seen corresponding path program 1 times [2022-11-22 01:47:07,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:47:07,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193097214] [2022-11-22 01:47:07,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:47:07,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:47:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-22 01:47:08,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:47:08,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193097214] [2022-11-22 01:47:08,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193097214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:47:08,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:47:08,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:47:08,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605913584] [2022-11-22 01:47:08,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:47:08,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:47:08,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:47:08,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:47:08,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:47:08,341 INFO L87 Difference]: Start difference. First operand 13960 states and 19273 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 01:47:10,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:10,885 INFO L93 Difference]: Finished difference Result 13966 states and 19278 transitions. [2022-11-22 01:47:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:47:10,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2022-11-22 01:47:10,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:10,944 INFO L225 Difference]: With dead ends: 13966 [2022-11-22 01:47:10,945 INFO L226 Difference]: Without dead ends: 13964 [2022-11-22 01:47:10,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:47:10,952 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1868 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 5010 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:10,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1880 Valid, 5010 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 01:47:10,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13964 states. [2022-11-22 01:47:11,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13964 to 13964. [2022-11-22 01:47:11,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13964 states, 7798 states have (on average 1.2090279558861246) internal successors, (9428), 8154 states have internal predecessors, (9428), 4896 states have call successors, (4896), 1278 states have call predecessors, (4896), 1267 states have return successors, (4952), 4778 states have call predecessors, (4952), 4893 states have call successors, (4952) [2022-11-22 01:47:11,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13964 states to 13964 states and 19276 transitions. [2022-11-22 01:47:11,990 INFO L78 Accepts]: Start accepts. Automaton has 13964 states and 19276 transitions. Word has length 130 [2022-11-22 01:47:11,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:47:11,991 INFO L495 AbstractCegarLoop]: Abstraction has 13964 states and 19276 transitions. [2022-11-22 01:47:11,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 01:47:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 13964 states and 19276 transitions. [2022-11-22 01:47:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-22 01:47:11,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:47:11,994 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-22 01:47:11,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:47:11,995 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:47:11,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:47:11,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1971486227, now seen corresponding path program 1 times [2022-11-22 01:47:11,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:47:11,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57586990] [2022-11-22 01:47:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:47:11,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:47:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-22 01:47:12,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:47:12,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57586990] [2022-11-22 01:47:12,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57586990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:47:12,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:47:12,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:47:12,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581720541] [2022-11-22 01:47:12,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:47:12,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:47:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:47:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:47:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:47:12,378 INFO L87 Difference]: Start difference. First operand 13964 states and 19276 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 01:47:15,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:15,430 INFO L93 Difference]: Finished difference Result 13970 states and 19281 transitions. [2022-11-22 01:47:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:47:15,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 135 [2022-11-22 01:47:15,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:15,511 INFO L225 Difference]: With dead ends: 13970 [2022-11-22 01:47:15,511 INFO L226 Difference]: Without dead ends: 13968 [2022-11-22 01:47:15,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:47:15,522 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1868 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 5010 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:15,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 5010 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 01:47:15,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13968 states. [2022-11-22 01:47:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13968 to 13968. [2022-11-22 01:47:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13968 states, 7801 states have (on average 1.2089475708242532) internal successors, (9431), 8157 states have internal predecessors, (9431), 4896 states have call successors, (4896), 1279 states have call predecessors, (4896), 1268 states have return successors, (4952), 4778 states have call predecessors, (4952), 4893 states have call successors, (4952) [2022-11-22 01:47:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13968 states to 13968 states and 19279 transitions. [2022-11-22 01:47:16,493 INFO L78 Accepts]: Start accepts. Automaton has 13968 states and 19279 transitions. Word has length 135 [2022-11-22 01:47:16,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:47:16,494 INFO L495 AbstractCegarLoop]: Abstraction has 13968 states and 19279 transitions. [2022-11-22 01:47:16,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 01:47:16,495 INFO L276 IsEmpty]: Start isEmpty. Operand 13968 states and 19279 transitions. [2022-11-22 01:47:16,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-22 01:47:16,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:47:16,497 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:47:16,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:47:16,498 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:47:16,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:47:16,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1995209206, now seen corresponding path program 1 times [2022-11-22 01:47:16,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:47:16,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992224358] [2022-11-22 01:47:16,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:47:16,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:47:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-11-22 01:47:16,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:47:16,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992224358] [2022-11-22 01:47:16,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992224358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:47:16,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:47:16,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:47:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724774385] [2022-11-22 01:47:16,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:47:16,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:47:16,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:47:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:47:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:47:16,847 INFO L87 Difference]: Start difference. First operand 13968 states and 19279 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-22 01:47:20,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:20,068 INFO L93 Difference]: Finished difference Result 13974 states and 19284 transitions. [2022-11-22 01:47:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:47:20,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 140 [2022-11-22 01:47:20,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:20,134 INFO L225 Difference]: With dead ends: 13974 [2022-11-22 01:47:20,134 INFO L226 Difference]: Without dead ends: 13972 [2022-11-22 01:47:20,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:47:20,145 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1868 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 5010 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:20,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 5010 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-22 01:47:20,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13972 states. [2022-11-22 01:47:21,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13972 to 13972. [2022-11-22 01:47:21,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13972 states, 7804 states have (on average 1.208867247565351) internal successors, (9434), 8160 states have internal predecessors, (9434), 4896 states have call successors, (4896), 1280 states have call predecessors, (4896), 1269 states have return successors, (4952), 4778 states have call predecessors, (4952), 4893 states have call successors, (4952) [2022-11-22 01:47:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13972 states to 13972 states and 19282 transitions. [2022-11-22 01:47:21,087 INFO L78 Accepts]: Start accepts. Automaton has 13972 states and 19282 transitions. Word has length 140 [2022-11-22 01:47:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:47:21,088 INFO L495 AbstractCegarLoop]: Abstraction has 13972 states and 19282 transitions. [2022-11-22 01:47:21,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-22 01:47:21,089 INFO L276 IsEmpty]: Start isEmpty. Operand 13972 states and 19282 transitions. [2022-11-22 01:47:21,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-22 01:47:21,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:47:21,091 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:47:21,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:47:21,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:47:21,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:47:21,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1103265634, now seen corresponding path program 1 times [2022-11-22 01:47:21,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:47:21,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832991015] [2022-11-22 01:47:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:47:21,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:47:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-22 01:47:21,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:47:21,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832991015] [2022-11-22 01:47:21,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832991015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:47:21,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:47:21,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:47:21,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214286108] [2022-11-22 01:47:21,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:47:21,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:47:21,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:47:21,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:47:21,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:47:21,286 INFO L87 Difference]: Start difference. First operand 13972 states and 19282 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 01:47:24,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:24,540 INFO L93 Difference]: Finished difference Result 33087 states and 45679 transitions. [2022-11-22 01:47:24,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:47:24,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 142 [2022-11-22 01:47:24,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:24,648 INFO L225 Difference]: With dead ends: 33087 [2022-11-22 01:47:24,648 INFO L226 Difference]: Without dead ends: 19168 [2022-11-22 01:47:24,710 INFO L412 NwaCegarLoop]: 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 [2022-11-22 01:47:24,710 INFO L413 NwaCegarLoop]: 2853 mSDtfsCounter, 1390 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:24,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 4489 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-22 01:47:24,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19168 states. [2022-11-22 01:47:26,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19168 to 19118. [2022-11-22 01:47:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19118 states, 10689 states have (on average 1.2068481616615212) internal successors, (12900), 11180 states have internal predecessors, (12900), 6662 states have call successors, (6662), 1777 states have call predecessors, (6662), 1764 states have return successors, (6724), 6506 states have call predecessors, (6724), 6659 states have call successors, (6724) [2022-11-22 01:47:26,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19118 states to 19118 states and 26286 transitions. [2022-11-22 01:47:26,486 INFO L78 Accepts]: Start accepts. Automaton has 19118 states and 26286 transitions. Word has length 142 [2022-11-22 01:47:26,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:47:26,487 INFO L495 AbstractCegarLoop]: Abstraction has 19118 states and 26286 transitions. [2022-11-22 01:47:26,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 01:47:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 19118 states and 26286 transitions. [2022-11-22 01:47:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-22 01:47:26,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:47:26,490 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:47:26,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:47:26,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:47:26,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:47:26,492 INFO L85 PathProgramCache]: Analyzing trace with hash 674835194, now seen corresponding path program 1 times [2022-11-22 01:47:26,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:47:26,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397723972] [2022-11-22 01:47:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:47:26,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:47:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-11-22 01:47:26,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:47:26,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397723972] [2022-11-22 01:47:26,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397723972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:47:26,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:47:26,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:47:26,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613390394] [2022-11-22 01:47:26,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:47:26,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:47:26,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:47:26,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:47:26,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:47:26,959 INFO L87 Difference]: Start difference. First operand 19118 states and 26286 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 01:47:30,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:30,956 INFO L93 Difference]: Finished difference Result 19124 states and 26291 transitions. [2022-11-22 01:47:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:47:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 154 [2022-11-22 01:47:30,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:31,041 INFO L225 Difference]: With dead ends: 19124 [2022-11-22 01:47:31,041 INFO L226 Difference]: Without dead ends: 19122 [2022-11-22 01:47:31,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:47:31,056 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1864 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 5010 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:31,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 5010 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-22 01:47:31,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19122 states. [2022-11-22 01:47:32,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19122 to 19122. [2022-11-22 01:47:32,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19122 states, 10692 states have (on average 1.2067901234567902) internal successors, (12903), 11183 states have internal predecessors, (12903), 6662 states have call successors, (6662), 1778 states have call predecessors, (6662), 1765 states have return successors, (6724), 6506 states have call predecessors, (6724), 6659 states have call successors, (6724) [2022-11-22 01:47:32,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19122 states to 19122 states and 26289 transitions. [2022-11-22 01:47:32,447 INFO L78 Accepts]: Start accepts. Automaton has 19122 states and 26289 transitions. Word has length 154 [2022-11-22 01:47:32,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:47:32,447 INFO L495 AbstractCegarLoop]: Abstraction has 19122 states and 26289 transitions. [2022-11-22 01:47:32,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 01:47:32,447 INFO L276 IsEmpty]: Start isEmpty. Operand 19122 states and 26289 transitions. [2022-11-22 01:47:32,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-22 01:47:32,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:47:32,450 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:47:32,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:47:32,450 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:47:32,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:47:32,451 INFO L85 PathProgramCache]: Analyzing trace with hash 300610799, now seen corresponding path program 1 times [2022-11-22 01:47:32,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:47:32,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506991283] [2022-11-22 01:47:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:47:32,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:47:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-22 01:47:32,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:47:32,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506991283] [2022-11-22 01:47:32,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506991283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:47:32,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:47:32,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:47:32,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694472658] [2022-11-22 01:47:32,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:47:32,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:47:32,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:47:32,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:47:32,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:47:32,759 INFO L87 Difference]: Start difference. First operand 19122 states and 26289 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 01:47:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:35,727 INFO L93 Difference]: Finished difference Result 19128 states and 26294 transitions. [2022-11-22 01:47:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:47:35,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 159 [2022-11-22 01:47:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:35,788 INFO L225 Difference]: With dead ends: 19128 [2022-11-22 01:47:35,788 INFO L226 Difference]: Without dead ends: 19126 [2022-11-22 01:47:35,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:47:35,799 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1864 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 5010 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:35,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 5010 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 01:47:35,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19126 states. [2022-11-22 01:47:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19126 to 19126. [2022-11-22 01:47:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19126 states, 10695 states have (on average 1.2067321178120618) internal successors, (12906), 11186 states have internal predecessors, (12906), 6662 states have call successors, (6662), 1779 states have call predecessors, (6662), 1766 states have return successors, (6724), 6506 states have call predecessors, (6724), 6659 states have call successors, (6724) [2022-11-22 01:47:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19126 states to 19126 states and 26292 transitions. [2022-11-22 01:47:37,161 INFO L78 Accepts]: Start accepts. Automaton has 19126 states and 26292 transitions. Word has length 159 [2022-11-22 01:47:37,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:47:37,162 INFO L495 AbstractCegarLoop]: Abstraction has 19126 states and 26292 transitions. [2022-11-22 01:47:37,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 01:47:37,162 INFO L276 IsEmpty]: Start isEmpty. Operand 19126 states and 26292 transitions. [2022-11-22 01:47:37,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-22 01:47:37,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:47:37,165 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 4, 4, 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] [2022-11-22 01:47:37,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:47:37,165 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:47:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:47:37,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1720467117, now seen corresponding path program 1 times [2022-11-22 01:47:37,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:47:37,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814426347] [2022-11-22 01:47:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:47:37,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:47:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-22 01:47:37,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:47:37,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814426347] [2022-11-22 01:47:37,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814426347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:47:37,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:47:37,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:47:37,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054265054] [2022-11-22 01:47:37,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:47:37,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:47:37,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:47:37,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:47:37,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:47:37,541 INFO L87 Difference]: Start difference. First operand 19126 states and 26292 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 01:47:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:42,054 INFO L93 Difference]: Finished difference Result 36747 states and 50768 transitions. [2022-11-22 01:47:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:47:42,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 155 [2022-11-22 01:47:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:42,188 INFO L225 Difference]: With dead ends: 36747 [2022-11-22 01:47:42,188 INFO L226 Difference]: Without dead ends: 36745 [2022-11-22 01:47:42,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:47:42,205 INFO L413 NwaCegarLoop]: 2244 mSDtfsCounter, 1790 mSDsluCounter, 6110 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 8354 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:42,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 8354 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 01:47:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36745 states. [2022-11-22 01:47:44,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36745 to 36695. [2022-11-22 01:47:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36695 states, 20571 states have (on average 1.209323805357056) internal successors, (24877), 21591 states have internal predecessors, (24877), 12710 states have call successors, (12710), 3507 states have call predecessors, (12710), 3411 states have return successors, (13132), 12224 states have call predecessors, (13132), 12704 states have call successors, (13132) [2022-11-22 01:47:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36695 states to 36695 states and 50719 transitions. [2022-11-22 01:47:44,552 INFO L78 Accepts]: Start accepts. Automaton has 36695 states and 50719 transitions. Word has length 155 [2022-11-22 01:47:44,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:47:44,552 INFO L495 AbstractCegarLoop]: Abstraction has 36695 states and 50719 transitions. [2022-11-22 01:47:44,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 01:47:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 36695 states and 50719 transitions. [2022-11-22 01:47:44,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-22 01:47:44,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:47:44,554 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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] [2022-11-22 01:47:44,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:47:44,554 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:47:44,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:47:44,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1878939761, now seen corresponding path program 1 times [2022-11-22 01:47:44,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:47:44,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312136046] [2022-11-22 01:47:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:47:44,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:47:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2022-11-22 01:47:44,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:47:44,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312136046] [2022-11-22 01:47:44,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312136046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:47:44,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:47:44,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:47:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835176995] [2022-11-22 01:47:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:47:44,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:47:44,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:47:44,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:47:44,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:47:44,848 INFO L87 Difference]: Start difference. First operand 36695 states and 50719 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 01:47:48,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:48,542 INFO L93 Difference]: Finished difference Result 36705 states and 50728 transitions. [2022-11-22 01:47:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:47:48,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 169 [2022-11-22 01:47:48,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:48,674 INFO L225 Difference]: With dead ends: 36705 [2022-11-22 01:47:48,674 INFO L226 Difference]: Without dead ends: 36703 [2022-11-22 01:47:48,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:47:48,690 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1864 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 5010 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:48,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 5010 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 01:47:48,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36703 states. [2022-11-22 01:47:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36703 to 36703. [2022-11-22 01:47:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36703 states, 20577 states have (on average 1.2092627691111435) internal successors, (24883), 21597 states have internal predecessors, (24883), 12710 states have call successors, (12710), 3509 states have call predecessors, (12710), 3413 states have return successors, (13132), 12224 states have call predecessors, (13132), 12704 states have call successors, (13132) [2022-11-22 01:47:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36703 states to 36703 states and 50725 transitions. [2022-11-22 01:47:51,158 INFO L78 Accepts]: Start accepts. Automaton has 36703 states and 50725 transitions. Word has length 169 [2022-11-22 01:47:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:47:51,158 INFO L495 AbstractCegarLoop]: Abstraction has 36703 states and 50725 transitions. [2022-11-22 01:47:51,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 01:47:51,158 INFO L276 IsEmpty]: Start isEmpty. Operand 36703 states and 50725 transitions. [2022-11-22 01:47:51,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-22 01:47:51,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:47:51,160 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 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] [2022-11-22 01:47:51,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:47:51,161 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:47:51,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:47:51,161 INFO L85 PathProgramCache]: Analyzing trace with hash -964026637, now seen corresponding path program 1 times [2022-11-22 01:47:51,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:47:51,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499301248] [2022-11-22 01:47:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:47:51,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:47:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2022-11-22 01:47:51,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:47:51,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499301248] [2022-11-22 01:47:51,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499301248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:47:51,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:47:51,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:47:51,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391314246] [2022-11-22 01:47:51,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:47:51,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:47:51,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:47:51,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:47:51,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:47:51,446 INFO L87 Difference]: Start difference. First operand 36703 states and 50725 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-11-22 01:47:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:56,616 INFO L93 Difference]: Finished difference Result 39773 states and 54322 transitions. [2022-11-22 01:47:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:47:56,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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 165 [2022-11-22 01:47:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:56,731 INFO L225 Difference]: With dead ends: 39773 [2022-11-22 01:47:56,731 INFO L226 Difference]: Without dead ends: 39771 [2022-11-22 01:47:56,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:47:56,745 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1693 mSDsluCounter, 3737 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 5456 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:56,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 5456 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 01:47:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39771 states. [2022-11-22 01:47:59,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39771 to 39767. [2022-11-22 01:47:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39767 states, 22261 states have (on average 1.204213647185661) internal successors, (26807), 23329 states have internal predecessors, (26807), 13544 states have call successors, (13544), 4055 states have call predecessors, (13544), 3959 states have return successors, (13966), 13058 states have call predecessors, (13966), 13538 states have call successors, (13966) [2022-11-22 01:48:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39767 states to 39767 states and 54317 transitions. [2022-11-22 01:48:00,084 INFO L78 Accepts]: Start accepts. Automaton has 39767 states and 54317 transitions. Word has length 165 [2022-11-22 01:48:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:00,085 INFO L495 AbstractCegarLoop]: Abstraction has 39767 states and 54317 transitions. [2022-11-22 01:48:00,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-11-22 01:48:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 39767 states and 54317 transitions. [2022-11-22 01:48:00,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-22 01:48:00,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:00,087 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 9, 9, 7, 7, 7, 7, 7, 7, 6, 6, 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] [2022-11-22 01:48:00,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 01:48:00,088 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:48:00,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash 541278767, now seen corresponding path program 1 times [2022-11-22 01:48:00,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:00,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243776287] [2022-11-22 01:48:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:00,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-11-22 01:48:00,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:00,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243776287] [2022-11-22 01:48:00,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243776287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:00,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:00,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:48:00,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913986044] [2022-11-22 01:48:00,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:00,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:48:00,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:00,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:48:00,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:48:00,629 INFO L87 Difference]: Start difference. First operand 39767 states and 54317 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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) [2022-11-22 01:48:05,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:48:05,232 INFO L93 Difference]: Finished difference Result 39777 states and 54326 transitions. [2022-11-22 01:48:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:48:05,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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 179 [2022-11-22 01:48:05,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:48:05,349 INFO L225 Difference]: With dead ends: 39777 [2022-11-22 01:48:05,350 INFO L226 Difference]: Without dead ends: 39775 [2022-11-22 01:48:05,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:48:05,364 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1864 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 5010 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:48:05,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1868 Valid, 5010 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-22 01:48:05,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39775 states. [2022-11-22 01:48:08,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39775 to 39775. [2022-11-22 01:48:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39775 states, 22267 states have (on average 1.2041586203799344) internal successors, (26813), 23335 states have internal predecessors, (26813), 13544 states have call successors, (13544), 4057 states have call predecessors, (13544), 3961 states have return successors, (13966), 13058 states have call predecessors, (13966), 13538 states have call successors, (13966) [2022-11-22 01:48:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39775 states to 39775 states and 54323 transitions. [2022-11-22 01:48:08,704 INFO L78 Accepts]: Start accepts. Automaton has 39775 states and 54323 transitions. Word has length 179 [2022-11-22 01:48:08,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:08,704 INFO L495 AbstractCegarLoop]: Abstraction has 39775 states and 54323 transitions. [2022-11-22 01:48:08,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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) [2022-11-22 01:48:08,705 INFO L276 IsEmpty]: Start isEmpty. Operand 39775 states and 54323 transitions. [2022-11-22 01:48:08,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-22 01:48:08,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:08,707 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 7, 7, 7, 7, 7, 7, 6, 6, 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] [2022-11-22 01:48:08,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:48:08,708 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:48:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:08,708 INFO L85 PathProgramCache]: Analyzing trace with hash 714706330, now seen corresponding path program 1 times [2022-11-22 01:48:08,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:08,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197851571] [2022-11-22 01:48:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:08,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:09,005 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-22 01:48:09,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:09,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197851571] [2022-11-22 01:48:09,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197851571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:09,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:09,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:48:09,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768492538] [2022-11-22 01:48:09,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:09,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:48:09,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:09,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:48:09,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:48:09,008 INFO L87 Difference]: Start difference. First operand 39775 states and 54323 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28)