./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-usb-smsc95xx.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_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/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_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/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-usb-smsc95xx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/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_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/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 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 --- 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 02:45:32,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:45:32,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:45:32,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:45:32,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:45:32,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:45:32,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:45:32,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:45:32,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:45:32,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:45:32,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:45:32,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:45:32,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:45:32,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:45:32,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:45:32,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:45:32,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:45:32,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:45:32,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:45:32,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:45:32,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:45:32,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:45:32,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:45:32,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:45:32,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:45:32,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:45:32,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:45:32,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:45:32,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:45:32,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:45:32,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:45:32,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:45:32,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:45:32,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:45:32,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:45:32,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:45:32,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:45:32,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:45:32,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:45:32,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:45:32,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:45:32,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:45:32,449 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:45:32,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:45:32,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:45:32,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:45:32,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:45:32,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:45:32,459 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:45:32,460 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:45:32,460 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:45:32,460 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:45:32,461 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:45:32,461 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:45:32,462 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:45:32,462 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:45:32,462 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:45:32,462 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:45:32,463 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:45:32,463 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:45:32,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:45:32,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:45:32,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:45:32,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:45:32,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:45:32,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:45:32,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:45:32,466 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:45:32,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:45:32,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:45:32,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:45:32,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:45:32,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:45:32,471 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:45:32,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:45:32,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:45:32,472 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:45:32,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:45:32,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:45:32,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:45:32,473 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_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 [2022-11-22 02:45:32,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:45:32,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:45:32,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:45:32,816 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:45:32,816 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:45:32,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2022-11-22 02:45:35,875 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:45:36,488 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:45:36,490 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2022-11-22 02:45:36,541 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/bin/utaipan-g80aRyZoba/data/cbbc47cbe/b4946a6c14784704bf4aec9f1554ebd6/FLAGee9dac0f7 [2022-11-22 02:45:36,559 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/bin/utaipan-g80aRyZoba/data/cbbc47cbe/b4946a6c14784704bf4aec9f1554ebd6 [2022-11-22 02:45:36,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:45:36,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:45:36,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:45:36,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:45:36,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:45:36,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:45:36" (1/1) ... [2022-11-22 02:45:36,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2fe030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:36, skipping insertion in model container [2022-11-22 02:45:36,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:45:36" (1/1) ... [2022-11-22 02:45:36,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:45:36,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:45:39,508 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_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2022-11-22 02:45:39,514 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_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2022-11-22 02:45:39,515 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_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2022-11-22 02:45:39,515 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_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2022-11-22 02:45:39,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:45:39,589 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:45:39,995 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_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2022-11-22 02:45:39,996 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_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2022-11-22 02:45:39,996 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_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2022-11-22 02:45:40,042 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_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2022-11-22 02:45:40,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:45:40,300 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:45:40,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40 WrapperNode [2022-11-22 02:45:40,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:45:40,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:45:40,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:45:40,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:45:40,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40" (1/1) ... [2022-11-22 02:45:40,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40" (1/1) ... [2022-11-22 02:45:40,628 INFO L138 Inliner]: procedures = 391, calls = 2978, calls flagged for inlining = 179, calls inlined = 164, statements flattened = 6208 [2022-11-22 02:45:40,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:45:40,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:45:40,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:45:40,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:45:40,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40" (1/1) ... [2022-11-22 02:45:40,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40" (1/1) ... [2022-11-22 02:45:40,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40" (1/1) ... [2022-11-22 02:45:40,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40" (1/1) ... [2022-11-22 02:45:40,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40" (1/1) ... [2022-11-22 02:45:40,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40" (1/1) ... [2022-11-22 02:45:40,934 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40" (1/1) ... [2022-11-22 02:45:40,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40" (1/1) ... [2022-11-22 02:45:40,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:45:40,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:45:40,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:45:40,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:45:40,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40" (1/1) ... [2022-11-22 02:45:41,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:45:41,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:45:41,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:45:41,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dcf5f7b-0c09-47ed-a89f-947c1da0ef4d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:45:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:45:41,075 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:45:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_nway_reset [2022-11-22 02:45:41,076 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_nway_reset [2022-11-22 02:45:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_link_reset [2022-11-22 02:45:41,076 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_link_reset [2022-11-22 02:45:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:45:41,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:45:41,076 INFO L130 BoogieDeclarations]: Found specification of procedure smsc_crc [2022-11-22 02:45:41,077 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc_crc [2022-11-22 02:45:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_ethtool_getregslen [2022-11-22 02:45:41,077 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_ethtool_getregslen [2022-11-22 02:45:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_write [2022-11-22 02:45:41,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_write [2022-11-22 02:45:41,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:45:41,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:45:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-22 02:45:41,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-22 02:45:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_nopm [2022-11-22 02:45:41,079 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_nopm [2022-11-22 02:45:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smsc95xx_driver_exit_6_2 [2022-11-22 02:45:41,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smsc95xx_driver_exit_6_2 [2022-11-22 02:45:41,080 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enable_phy_wakeup_interrupts [2022-11-22 02:45:41,080 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enable_phy_wakeup_interrupts [2022-11-22 02:45:41,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:45:41,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:45:41,081 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2022-11-22 02:45:41,081 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 02:45:41,081 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 02:45:41,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:45:41,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:45:41,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:45:41,082 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg [2022-11-22 02:45:41,082 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg [2022-11-22 02:45:41,082 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_rx_csum_offload [2022-11-22 02:45:41,083 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_rx_csum_offload [2022-11-22 02:45:41,083 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg_nopm [2022-11-22 02:45:41,083 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg_nopm [2022-11-22 02:45:41,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:45:41,083 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-11-22 02:45:41,083 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-11-22 02:45:41,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:45:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:45:41,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:45:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-11-22 02:45:41,084 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-11-22 02:45:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:45:41,084 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-11-22 02:45:41,085 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-11-22 02:45:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write_nopm [2022-11-22 02:45:41,085 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write_nopm [2022-11-22 02:45:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:45:41,085 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:45:41,085 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_ethtool_get_eeprom_len [2022-11-22 02:45:41,086 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_ethtool_get_eeprom_len [2022-11-22 02:45:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2022-11-22 02:45:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-11-22 02:45:41,086 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-11-22 02:45:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2022-11-22 02:45:41,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:45:41,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:45:41,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:45:41,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 02:45:41,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 02:45:41,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 02:45:41,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 02:45:41,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:45:41,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:45:41,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:45:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 02:45:41,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 02:45:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:45:41,090 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_start_rx_path [2022-11-22 02:45:41,091 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_start_rx_path [2022-11-22 02:45:41,091 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:45:41,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:45:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2022-11-22 02:45:41,092 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2022-11-22 02:45:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_write_reg [2022-11-22 02:45:41,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_write_reg [2022-11-22 02:45:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_features [2022-11-22 02:45:41,092 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_features [2022-11-22 02:45:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 02:45:41,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 02:45:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_wait_eeprom [2022-11-22 02:45:41,093 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_wait_eeprom [2022-11-22 02:45:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:45:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:45:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_read_reg [2022-11-22 02:45:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_read_reg [2022-11-22 02:45:41,095 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-22 02:45:41,095 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-22 02:45:41,095 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-22 02:45:41,095 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-22 02:45:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:45:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:45:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:45:41,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:45:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-11-22 02:45:41,096 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-11-22 02:45:41,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:45:41,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:45:41,097 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_reset [2022-11-22 02:45:41,098 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_reset [2022-11-22 02:45:41,098 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~X~~u16~0~X~$Pointer$~X~~u16~0~TO~int [2022-11-22 02:45:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~X~~u16~0~X~$Pointer$~X~~u16~0~TO~int [2022-11-22 02:45:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2022-11-22 02:45:41,103 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2022-11-22 02:45:41,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mac_cr_lock_of_smsc95xx_priv [2022-11-22 02:45:41,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mac_cr_lock_of_smsc95xx_priv [2022-11-22 02:45:41,104 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg [2022-11-22 02:45:41,105 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg [2022-11-22 02:45:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 02:45:41,105 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 02:45:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:45:41,111 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:45:41,111 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write [2022-11-22 02:45:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write [2022-11-22 02:45:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:45:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 02:45:41,112 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 02:45:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:45:41,112 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend1 [2022-11-22 02:45:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend1 [2022-11-22 02:45:41,113 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend2 [2022-11-22 02:45:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend2 [2022-11-22 02:45:41,113 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_eeprom [2022-11-22 02:45:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_eeprom [2022-11-22 02:45:41,113 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_multicast [2022-11-22 02:45:41,113 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_multicast [2022-11-22 02:45:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:45:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_start_offset [2022-11-22 02:45:41,114 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_start_offset [2022-11-22 02:45:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-22 02:45:41,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-22 02:45:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-22 02:45:41,114 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-22 02:45:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:45:41,115 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:45:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:45:41,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:45:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 02:45:41,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 02:45:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read [2022-11-22 02:45:41,116 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read [2022-11-22 02:45:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_phy_wait_not_busy [2022-11-22 02:45:41,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_phy_wait_not_busy [2022-11-22 02:45:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-11-22 02:45:41,116 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-11-22 02:45:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2022-11-22 02:45:41,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2022-11-22 02:45:41,116 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_async [2022-11-22 02:45:41,117 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_async [2022-11-22 02:45:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 02:45:41,117 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 02:45:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read_nopm [2022-11-22 02:45:41,117 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read_nopm [2022-11-22 02:45:41,117 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_resume [2022-11-22 02:45:41,118 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_resume [2022-11-22 02:45:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:45:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-22 02:45:41,118 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-22 02:45:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:45:41,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:45:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2022-11-22 02:45:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_read [2022-11-22 02:45:41,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_read [2022-11-22 02:45:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_eeprom_confirm_not_busy [2022-11-22 02:45:41,119 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_eeprom_confirm_not_busy [2022-11-22 02:45:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:45:41,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:45:41,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:45:41,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:45:41,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:45:42,023 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:45:42,029 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:45:42,358 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:45:56,275 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:45:56,366 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:45:57,835 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:45:57,835 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 02:45:57,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:45:57 BoogieIcfgContainer [2022-11-22 02:45:57,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:45:57,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:45:57,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:45:57,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:45:57,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:45:36" (1/3) ... [2022-11-22 02:45:57,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73efd902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:45:57, skipping insertion in model container [2022-11-22 02:45:57,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:45:40" (2/3) ... [2022-11-22 02:45:57,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73efd902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:45:57, skipping insertion in model container [2022-11-22 02:45:57,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:45:57" (3/3) ... [2022-11-22 02:45:57,853 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2022-11-22 02:45:57,875 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:45:57,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 02:45:57,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:45:57,986 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;@138f36c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:45:57,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 02:45:57,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 1274 states, 809 states have (on average 1.3868974042027193) internal successors, (1122), 815 states have internal predecessors, (1122), 386 states have call successors, (386), 77 states have call predecessors, (386), 76 states have return successors, (379), 379 states have call predecessors, (379), 379 states have call successors, (379) [2022-11-22 02:45:58,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-22 02:45:58,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:58,037 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 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 02:45:58,037 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 02:45:58,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2135025191, now seen corresponding path program 1 times [2022-11-22 02:45:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:58,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670701546] [2022-11-22 02:45:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:58,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2022-11-22 02:45:59,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:59,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670701546] [2022-11-22 02:45:59,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670701546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:59,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:59,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:45:59,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167458532] [2022-11-22 02:45:59,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:59,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:45:59,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:59,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:45:59,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:45:59,173 INFO L87 Difference]: Start difference. First operand has 1274 states, 809 states have (on average 1.3868974042027193) internal successors, (1122), 815 states have internal predecessors, (1122), 386 states have call successors, (386), 77 states have call predecessors, (386), 76 states have return successors, (379), 379 states have call predecessors, (379), 379 states have call successors, (379) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-22 02:46:01,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:01,831 INFO L93 Difference]: Finished difference Result 3667 states and 5494 transitions. [2022-11-22 02:46:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:01,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 205 [2022-11-22 02:46:01,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:01,887 INFO L225 Difference]: With dead ends: 3667 [2022-11-22 02:46:01,888 INFO L226 Difference]: Without dead ends: 2419 [2022-11-22 02:46:01,904 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 02:46:01,910 INFO L413 NwaCegarLoop]: 1938 mSDtfsCounter, 1738 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:01,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1738 Valid, 3507 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 02:46:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2022-11-22 02:46:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2415. [2022-11-22 02:46:02,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 1558 states have (on average 1.3844672657252888) internal successors, (2157), 1569 states have internal predecessors, (2157), 706 states have call successors, (706), 149 states have call predecessors, (706), 148 states have return successors, (702), 702 states have call predecessors, (702), 702 states have call successors, (702) [2022-11-22 02:46:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 3565 transitions. [2022-11-22 02:46:02,155 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 3565 transitions. Word has length 205 [2022-11-22 02:46:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:02,156 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 3565 transitions. [2022-11-22 02:46:02,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-22 02:46:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 3565 transitions. [2022-11-22 02:46:02,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-22 02:46:02,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:02,165 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:02,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:46:02,165 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 02:46:02,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:02,166 INFO L85 PathProgramCache]: Analyzing trace with hash -971734090, now seen corresponding path program 1 times [2022-11-22 02:46:02,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:02,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559389526] [2022-11-22 02:46:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:02,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2022-11-22 02:46:02,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:02,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559389526] [2022-11-22 02:46:02,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559389526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:02,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:02,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:46:02,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525496769] [2022-11-22 02:46:02,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:02,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:46:02,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:02,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:46:02,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:02,648 INFO L87 Difference]: Start difference. First operand 2415 states and 3565 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 02:46:05,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:05,360 INFO L93 Difference]: Finished difference Result 5752 states and 8436 transitions. [2022-11-22 02:46:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:05,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 217 [2022-11-22 02:46:05,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:05,386 INFO L225 Difference]: With dead ends: 5752 [2022-11-22 02:46:05,387 INFO L226 Difference]: Without dead ends: 3374 [2022-11-22 02:46:05,400 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 02:46:05,401 INFO L413 NwaCegarLoop]: 1965 mSDtfsCounter, 1564 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 3512 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:05,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 3512 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-22 02:46:05,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2022-11-22 02:46:05,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3347. [2022-11-22 02:46:05,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 2138 states have (on average 1.3634237605238542) internal successors, (2915), 2157 states have internal predecessors, (2915), 985 states have call successors, (985), 222 states have call predecessors, (985), 221 states have return successors, (981), 976 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-22 02:46:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 4881 transitions. [2022-11-22 02:46:05,682 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 4881 transitions. Word has length 217 [2022-11-22 02:46:05,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:05,683 INFO L495 AbstractCegarLoop]: Abstraction has 3347 states and 4881 transitions. [2022-11-22 02:46:05,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-22 02:46:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 4881 transitions. [2022-11-22 02:46:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-22 02:46:05,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:05,695 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:05,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:46:05,696 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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 02:46:05,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:05,706 INFO L85 PathProgramCache]: Analyzing trace with hash -778906656, now seen corresponding path program 1 times [2022-11-22 02:46:05,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:05,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883564599] [2022-11-22 02:46:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:05,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1415 trivial. 0 not checked. [2022-11-22 02:46:06,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:06,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883564599] [2022-11-22 02:46:06,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883564599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:06,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:06,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:46:06,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269158139] [2022-11-22 02:46:06,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:06,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:46:06,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:06,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:46:06,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:46:06,653 INFO L87 Difference]: Start difference. First operand 3347 states and 4881 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:46:09,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:09,262 INFO L93 Difference]: Finished difference Result 3353 states and 4886 transitions. [2022-11-22 02:46:09,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:46:09,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 249 [2022-11-22 02:46:09,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:09,282 INFO L225 Difference]: With dead ends: 3353 [2022-11-22 02:46:09,282 INFO L226 Difference]: Without dead ends: 3351 [2022-11-22 02:46:09,285 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 02:46:09,286 INFO L413 NwaCegarLoop]: 1584 mSDtfsCounter, 1791 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 4739 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:09,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 4739 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 02:46:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2022-11-22 02:46:09,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 3351. [2022-11-22 02:46:09,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3351 states, 2141 states have (on average 1.3629145259224662) internal successors, (2918), 2160 states have internal predecessors, (2918), 985 states have call successors, (985), 223 states have call predecessors, (985), 222 states have return successors, (981), 976 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-22 02:46:09,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 4884 transitions. [2022-11-22 02:46:09,480 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 4884 transitions. Word has length 249 [2022-11-22 02:46:09,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:09,485 INFO L495 AbstractCegarLoop]: Abstraction has 3351 states and 4884 transitions. [2022-11-22 02:46:09,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:46:09,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 4884 transitions. [2022-11-22 02:46:09,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-22 02:46:09,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:09,493 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:09,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:46:09,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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 02:46:09,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1433157346, now seen corresponding path program 1 times [2022-11-22 02:46:09,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:09,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618461897] [2022-11-22 02:46:09,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:09,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1415 trivial. 0 not checked. [2022-11-22 02:46:10,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:10,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618461897] [2022-11-22 02:46:10,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618461897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:10,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:10,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:46:10,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076814250] [2022-11-22 02:46:10,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:10,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:46:10,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:10,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:46:10,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:46:10,265 INFO L87 Difference]: Start difference. First operand 3351 states and 4884 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 02:46:13,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:13,100 INFO L93 Difference]: Finished difference Result 3357 states and 4889 transitions. [2022-11-22 02:46:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:46:13,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 254 [2022-11-22 02:46:13,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:13,120 INFO L225 Difference]: With dead ends: 3357 [2022-11-22 02:46:13,121 INFO L226 Difference]: Without dead ends: 3355 [2022-11-22 02:46:13,123 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 02:46:13,126 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1786 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:13,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 4742 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-22 02:46:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2022-11-22 02:46:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 3355. [2022-11-22 02:46:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3355 states, 2144 states have (on average 1.3624067164179106) internal successors, (2921), 2163 states have internal predecessors, (2921), 985 states have call successors, (985), 224 states have call predecessors, (985), 223 states have return successors, (981), 976 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-22 02:46:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 4887 transitions. [2022-11-22 02:46:13,395 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 4887 transitions. Word has length 254 [2022-11-22 02:46:13,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:13,396 INFO L495 AbstractCegarLoop]: Abstraction has 3355 states and 4887 transitions. [2022-11-22 02:46:13,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 02:46:13,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 4887 transitions. [2022-11-22 02:46:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-22 02:46:13,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:13,404 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:13,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:46:13,404 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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 02:46:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:13,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1002546550, now seen corresponding path program 1 times [2022-11-22 02:46:13,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:13,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564390528] [2022-11-22 02:46:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:13,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1413 trivial. 0 not checked. [2022-11-22 02:46:14,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:14,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564390528] [2022-11-22 02:46:14,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564390528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:14,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:14,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:46:14,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520456522] [2022-11-22 02:46:14,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:14,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:46:14,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:14,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:46:14,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:46:14,134 INFO L87 Difference]: Start difference. First operand 3355 states and 4887 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:46:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:17,088 INFO L93 Difference]: Finished difference Result 3361 states and 4892 transitions. [2022-11-22 02:46:17,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:46:17,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 257 [2022-11-22 02:46:17,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:17,110 INFO L225 Difference]: With dead ends: 3361 [2022-11-22 02:46:17,110 INFO L226 Difference]: Without dead ends: 3359 [2022-11-22 02:46:17,113 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 02:46:17,113 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1787 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:17,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 4742 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-22 02:46:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2022-11-22 02:46:17,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 3359. [2022-11-22 02:46:17,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 2147 states have (on average 1.3619003260363298) internal successors, (2924), 2166 states have internal predecessors, (2924), 985 states have call successors, (985), 225 states have call predecessors, (985), 224 states have return successors, (981), 976 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-22 02:46:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 4890 transitions. [2022-11-22 02:46:17,349 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 4890 transitions. Word has length 257 [2022-11-22 02:46:17,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:17,350 INFO L495 AbstractCegarLoop]: Abstraction has 3359 states and 4890 transitions. [2022-11-22 02:46:17,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:46:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 4890 transitions. [2022-11-22 02:46:17,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-22 02:46:17,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:17,360 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:17,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:46:17,362 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 02:46:17,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:17,362 INFO L85 PathProgramCache]: Analyzing trace with hash 23921963, now seen corresponding path program 1 times [2022-11-22 02:46:17,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:17,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477311686] [2022-11-22 02:46:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:17,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2022-11-22 02:46:17,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477311686] [2022-11-22 02:46:17,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477311686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:17,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:17,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:46:17,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309538082] [2022-11-22 02:46:17,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:17,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:46:17,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:18,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:46:18,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:46:18,001 INFO L87 Difference]: Start difference. First operand 3359 states and 4890 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 02:46:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:21,016 INFO L93 Difference]: Finished difference Result 3365 states and 4895 transitions. [2022-11-22 02:46:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:46:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 263 [2022-11-22 02:46:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:21,037 INFO L225 Difference]: With dead ends: 3365 [2022-11-22 02:46:21,037 INFO L226 Difference]: Without dead ends: 3363 [2022-11-22 02:46:21,040 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 02:46:21,041 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1786 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:21,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1794 Valid, 4742 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-22 02:46:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2022-11-22 02:46:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3363. [2022-11-22 02:46:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 2150 states have (on average 1.3613953488372093) internal successors, (2927), 2169 states have internal predecessors, (2927), 985 states have call successors, (985), 226 states have call predecessors, (985), 225 states have return successors, (981), 976 states have call predecessors, (981), 981 states have call successors, (981) [2022-11-22 02:46:21,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4893 transitions. [2022-11-22 02:46:21,308 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4893 transitions. Word has length 263 [2022-11-22 02:46:21,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:21,310 INFO L495 AbstractCegarLoop]: Abstraction has 3363 states and 4893 transitions. [2022-11-22 02:46:21,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-22 02:46:21,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4893 transitions. [2022-11-22 02:46:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-11-22 02:46:21,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:21,322 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:21,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:46:21,322 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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 02:46:21,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:21,323 INFO L85 PathProgramCache]: Analyzing trace with hash 562996384, now seen corresponding path program 1 times [2022-11-22 02:46:21,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:21,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154566591] [2022-11-22 02:46:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:21,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2022-11-22 02:46:21,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:21,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154566591] [2022-11-22 02:46:21,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154566591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:21,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:21,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:46:21,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667679266] [2022-11-22 02:46:21,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:21,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:46:21,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:21,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:46:21,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:21,842 INFO L87 Difference]: Start difference. First operand 3363 states and 4893 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:46:24,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:24,445 INFO L93 Difference]: Finished difference Result 8403 states and 12222 transitions. [2022-11-22 02:46:24,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:24,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 351 [2022-11-22 02:46:24,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:24,474 INFO L225 Difference]: With dead ends: 8403 [2022-11-22 02:46:24,474 INFO L226 Difference]: Without dead ends: 5077 [2022-11-22 02:46:24,487 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 02:46:24,489 INFO L413 NwaCegarLoop]: 1947 mSDtfsCounter, 1534 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:24,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 3516 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-22 02:46:24,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2022-11-22 02:46:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 5032. [2022-11-22 02:46:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5032 states, 3206 states have (on average 1.3605739238927013) internal successors, (4362), 3237 states have internal predecessors, (4362), 1481 states have call successors, (1481), 343 states have call predecessors, (1481), 342 states have return successors, (1477), 1460 states have call predecessors, (1477), 1477 states have call successors, (1477) [2022-11-22 02:46:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5032 states to 5032 states and 7320 transitions. [2022-11-22 02:46:24,839 INFO L78 Accepts]: Start accepts. Automaton has 5032 states and 7320 transitions. Word has length 351 [2022-11-22 02:46:24,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:24,840 INFO L495 AbstractCegarLoop]: Abstraction has 5032 states and 7320 transitions. [2022-11-22 02:46:24,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:46:24,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5032 states and 7320 transitions. [2022-11-22 02:46:24,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-22 02:46:24,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:24,851 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:24,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:46:24,852 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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 02:46:24,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:24,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1853008205, now seen corresponding path program 1 times [2022-11-22 02:46:24,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:24,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648692405] [2022-11-22 02:46:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:24,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2022-11-22 02:46:25,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:25,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648692405] [2022-11-22 02:46:25,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648692405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:25,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:25,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:46:25,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993896245] [2022-11-22 02:46:25,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:25,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:46:25,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:25,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:46:25,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:25,426 INFO L87 Difference]: Start difference. First operand 5032 states and 7320 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:46:29,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:29,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:29,706 INFO L93 Difference]: Finished difference Result 12176 states and 17703 transitions. [2022-11-22 02:46:29,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:29,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 357 [2022-11-22 02:46:29,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:29,749 INFO L225 Difference]: With dead ends: 12176 [2022-11-22 02:46:29,749 INFO L226 Difference]: Without dead ends: 7181 [2022-11-22 02:46:29,771 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 02:46:29,772 INFO L413 NwaCegarLoop]: 2154 mSDtfsCounter, 1279 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 3716 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:29,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 3716 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-22 02:46:29,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7181 states. [2022-11-22 02:46:30,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7181 to 7130. [2022-11-22 02:46:30,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7130 states, 4586 states have (on average 1.3610989969472307) internal successors, (6242), 4651 states have internal predecessors, (6242), 2045 states have call successors, (2045), 497 states have call predecessors, (2045), 496 states have return successors, (2041), 1994 states have call predecessors, (2041), 2041 states have call successors, (2041) [2022-11-22 02:46:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7130 states to 7130 states and 10328 transitions. [2022-11-22 02:46:30,338 INFO L78 Accepts]: Start accepts. Automaton has 7130 states and 10328 transitions. Word has length 357 [2022-11-22 02:46:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:30,339 INFO L495 AbstractCegarLoop]: Abstraction has 7130 states and 10328 transitions. [2022-11-22 02:46:30,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:46:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 7130 states and 10328 transitions. [2022-11-22 02:46:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-22 02:46:30,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:30,344 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:30,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:46:30,344 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 02:46:30,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:30,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1891823091, now seen corresponding path program 1 times [2022-11-22 02:46:30,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:30,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179075649] [2022-11-22 02:46:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:30,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1438 trivial. 0 not checked. [2022-11-22 02:46:30,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:30,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179075649] [2022-11-22 02:46:30,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179075649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:30,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:30,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:46:30,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260190719] [2022-11-22 02:46:30,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:30,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:46:30,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:30,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:46:30,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:46:30,982 INFO L87 Difference]: Start difference. First operand 7130 states and 10328 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 02:46:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:33,046 INFO L93 Difference]: Finished difference Result 7136 states and 10333 transitions. [2022-11-22 02:46:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:46:33,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 268 [2022-11-22 02:46:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:33,079 INFO L225 Difference]: With dead ends: 7136 [2022-11-22 02:46:33,079 INFO L226 Difference]: Without dead ends: 7134 [2022-11-22 02:46:33,084 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 02:46:33,085 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1786 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:33,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1793 Valid, 4742 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 02:46:33,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2022-11-22 02:46:33,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 7134. [2022-11-22 02:46:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7134 states, 4589 states have (on average 1.3608629331008935) internal successors, (6245), 4654 states have internal predecessors, (6245), 2045 states have call successors, (2045), 498 states have call predecessors, (2045), 497 states have return successors, (2041), 1994 states have call predecessors, (2041), 2041 states have call successors, (2041) [2022-11-22 02:46:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7134 states to 7134 states and 10331 transitions. [2022-11-22 02:46:33,637 INFO L78 Accepts]: Start accepts. Automaton has 7134 states and 10331 transitions. Word has length 268 [2022-11-22 02:46:33,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:33,638 INFO L495 AbstractCegarLoop]: Abstraction has 7134 states and 10331 transitions. [2022-11-22 02:46:33,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 02:46:33,638 INFO L276 IsEmpty]: Start isEmpty. Operand 7134 states and 10331 transitions. [2022-11-22 02:46:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-22 02:46:33,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:33,644 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:33,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:46:33,645 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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 02:46:33,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2008786453, now seen corresponding path program 1 times [2022-11-22 02:46:33,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:33,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314886910] [2022-11-22 02:46:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:33,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1454 trivial. 0 not checked. [2022-11-22 02:46:34,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:34,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314886910] [2022-11-22 02:46:34,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314886910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:34,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:34,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:46:34,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353460102] [2022-11-22 02:46:34,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:34,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:46:34,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:34,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:46:34,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:46:34,292 INFO L87 Difference]: Start difference. First operand 7134 states and 10331 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 02:46:37,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:37,106 INFO L93 Difference]: Finished difference Result 7140 states and 10336 transitions. [2022-11-22 02:46:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:46:37,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 273 [2022-11-22 02:46:37,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:37,140 INFO L225 Difference]: With dead ends: 7140 [2022-11-22 02:46:37,140 INFO L226 Difference]: Without dead ends: 7138 [2022-11-22 02:46:37,145 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 02:46:37,146 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1786 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:37,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 4742 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 02:46:37,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7138 states. [2022-11-22 02:46:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7138 to 7138. [2022-11-22 02:46:37,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7138 states, 4592 states have (on average 1.3606271777003485) internal successors, (6248), 4657 states have internal predecessors, (6248), 2045 states have call successors, (2045), 499 states have call predecessors, (2045), 498 states have return successors, (2041), 1994 states have call predecessors, (2041), 2041 states have call successors, (2041) [2022-11-22 02:46:37,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7138 states to 7138 states and 10334 transitions. [2022-11-22 02:46:37,745 INFO L78 Accepts]: Start accepts. Automaton has 7138 states and 10334 transitions. Word has length 273 [2022-11-22 02:46:37,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:37,746 INFO L495 AbstractCegarLoop]: Abstraction has 7138 states and 10334 transitions. [2022-11-22 02:46:37,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 02:46:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 7138 states and 10334 transitions. [2022-11-22 02:46:37,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-22 02:46:37,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:37,753 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:37,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:46:37,753 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 02:46:37,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:37,754 INFO L85 PathProgramCache]: Analyzing trace with hash 978235018, now seen corresponding path program 1 times [2022-11-22 02:46:37,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:37,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508892841] [2022-11-22 02:46:37,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:37,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1469 trivial. 0 not checked. [2022-11-22 02:46:38,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:38,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508892841] [2022-11-22 02:46:38,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508892841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:38,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:38,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:46:38,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364962863] [2022-11-22 02:46:38,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:38,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:46:38,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:38,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:46:38,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:46:38,425 INFO L87 Difference]: Start difference. First operand 7138 states and 10334 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 02:46:41,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:41,570 INFO L93 Difference]: Finished difference Result 7144 states and 10339 transitions. [2022-11-22 02:46:41,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:46:41,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 277 [2022-11-22 02:46:41,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:41,601 INFO L225 Difference]: With dead ends: 7144 [2022-11-22 02:46:41,601 INFO L226 Difference]: Without dead ends: 7142 [2022-11-22 02:46:41,606 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 02:46:41,607 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1787 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:41,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 4742 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-22 02:46:41,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7142 states. [2022-11-22 02:46:42,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7142 to 7142. [2022-11-22 02:46:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7142 states, 4595 states have (on average 1.360391730141458) internal successors, (6251), 4660 states have internal predecessors, (6251), 2045 states have call successors, (2045), 500 states have call predecessors, (2045), 499 states have return successors, (2041), 1994 states have call predecessors, (2041), 2041 states have call successors, (2041) [2022-11-22 02:46:42,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7142 states to 7142 states and 10337 transitions. [2022-11-22 02:46:42,227 INFO L78 Accepts]: Start accepts. Automaton has 7142 states and 10337 transitions. Word has length 277 [2022-11-22 02:46:42,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:42,228 INFO L495 AbstractCegarLoop]: Abstraction has 7142 states and 10337 transitions. [2022-11-22 02:46:42,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 02:46:42,228 INFO L276 IsEmpty]: Start isEmpty. Operand 7142 states and 10337 transitions. [2022-11-22 02:46:42,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-22 02:46:42,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:42,239 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:42,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:46:42,239 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 02:46:42,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:42,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1577677004, now seen corresponding path program 1 times [2022-11-22 02:46:42,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:42,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239785501] [2022-11-22 02:46:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:42,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1493 trivial. 0 not checked. [2022-11-22 02:46:42,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:42,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239785501] [2022-11-22 02:46:42,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239785501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:42,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:42,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:46:42,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829261414] [2022-11-22 02:46:42,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:42,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:46:42,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:42,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:46:42,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:46:42,867 INFO L87 Difference]: Start difference. First operand 7142 states and 10337 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 02:46:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:46,287 INFO L93 Difference]: Finished difference Result 7188 states and 10366 transitions. [2022-11-22 02:46:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:46:46,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 282 [2022-11-22 02:46:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:46,317 INFO L225 Difference]: With dead ends: 7188 [2022-11-22 02:46:46,317 INFO L226 Difference]: Without dead ends: 7186 [2022-11-22 02:46:46,322 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 02:46:46,322 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1723 mSDsluCounter, 3211 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 4798 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:46,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 4798 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-22 02:46:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7186 states. [2022-11-22 02:46:46,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7186 to 7186. [2022-11-22 02:46:46,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7186 states, 4622 states have (on average 1.3582864560796193) internal successors, (6278), 4687 states have internal predecessors, (6278), 2045 states have call successors, (2045), 517 states have call predecessors, (2045), 516 states have return successors, (2041), 1994 states have call predecessors, (2041), 2041 states have call successors, (2041) [2022-11-22 02:46:46,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7186 states to 7186 states and 10364 transitions. [2022-11-22 02:46:46,912 INFO L78 Accepts]: Start accepts. Automaton has 7186 states and 10364 transitions. Word has length 282 [2022-11-22 02:46:46,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:46,913 INFO L495 AbstractCegarLoop]: Abstraction has 7186 states and 10364 transitions. [2022-11-22 02:46:46,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 02:46:46,914 INFO L276 IsEmpty]: Start isEmpty. Operand 7186 states and 10364 transitions. [2022-11-22 02:46:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-22 02:46:46,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:46,922 INFO L195 NwaCegarLoop]: trace histogram [23, 18, 18, 18, 18, 18, 18, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:46,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:46:46,923 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 02:46:46,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash -254217426, now seen corresponding path program 1 times [2022-11-22 02:46:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:46,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751090631] [2022-11-22 02:46:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:46,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1450 trivial. 0 not checked. [2022-11-22 02:46:47,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:47,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751090631] [2022-11-22 02:46:47,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751090631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:47,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:47,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:46:47,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539418444] [2022-11-22 02:46:47,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:47,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:46:47,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:47,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:46:47,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:47,209 INFO L87 Difference]: Start difference. First operand 7186 states and 10364 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-22 02:46:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:50,956 INFO L93 Difference]: Finished difference Result 16390 states and 23671 transitions. [2022-11-22 02:46:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:50,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 277 [2022-11-22 02:46:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:50,995 INFO L225 Difference]: With dead ends: 16390 [2022-11-22 02:46:50,995 INFO L226 Difference]: Without dead ends: 10092 [2022-11-22 02:46:51,019 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 02:46:51,020 INFO L413 NwaCegarLoop]: 2949 mSDtfsCounter, 1618 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:51,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 4494 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-22 02:46:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10092 states. [2022-11-22 02:46:51,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10092 to 10027. [2022-11-22 02:46:51,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10027 states, 6463 states have (on average 1.3631440507504256) internal successors, (8810), 6562 states have internal predecessors, (8810), 2842 states have call successors, (2842), 720 states have call predecessors, (2842), 719 states have return successors, (2838), 2763 states have call predecessors, (2838), 2838 states have call successors, (2838) [2022-11-22 02:46:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10027 states to 10027 states and 14490 transitions. [2022-11-22 02:46:52,014 INFO L78 Accepts]: Start accepts. Automaton has 10027 states and 14490 transitions. Word has length 277 [2022-11-22 02:46:52,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:52,015 INFO L495 AbstractCegarLoop]: Abstraction has 10027 states and 14490 transitions. [2022-11-22 02:46:52,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-22 02:46:52,016 INFO L276 IsEmpty]: Start isEmpty. Operand 10027 states and 14490 transitions. [2022-11-22 02:46:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-22 02:46:52,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:52,025 INFO L195 NwaCegarLoop]: trace histogram [20, 18, 18, 18, 18, 18, 18, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:52,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:46:52,026 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 02:46:52,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:52,026 INFO L85 PathProgramCache]: Analyzing trace with hash -814774740, now seen corresponding path program 1 times [2022-11-22 02:46:52,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:52,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116439597] [2022-11-22 02:46:52,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:52,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1468 trivial. 0 not checked. [2022-11-22 02:46:52,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:52,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116439597] [2022-11-22 02:46:52,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116439597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:52,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:52,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:46:52,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687482167] [2022-11-22 02:46:52,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:52,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:46:52,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:52,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:46:52,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:46:52,618 INFO L87 Difference]: Start difference. First operand 10027 states and 14490 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-22 02:47:01,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:01,919 INFO L93 Difference]: Finished difference Result 31269 states and 45184 transitions. [2022-11-22 02:47:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:47:01,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 374 [2022-11-22 02:47:01,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:02,005 INFO L225 Difference]: With dead ends: 31269 [2022-11-22 02:47:02,005 INFO L226 Difference]: Without dead ends: 21279 [2022-11-22 02:47:02,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:47:02,045 INFO L413 NwaCegarLoop]: 3512 mSDtfsCounter, 3002 mSDsluCounter, 3533 mSDsCounter, 0 mSdLazyCounter, 3579 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3091 SdHoareTripleChecker+Valid, 7045 SdHoareTripleChecker+Invalid, 3965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 3579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:02,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3091 Valid, 7045 Invalid, 3965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [386 Valid, 3579 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-22 02:47:02,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21279 states. [2022-11-22 02:47:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21279 to 21111. [2022-11-22 02:47:03,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21111 states, 13661 states have (on average 1.3682746504648269) internal successors, (18692), 13895 states have internal predecessors, (18692), 5930 states have call successors, (5930), 1536 states have call predecessors, (5930), 1517 states have return successors, (5926), 5721 states have call predecessors, (5926), 5926 states have call successors, (5926) [2022-11-22 02:47:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21111 states to 21111 states and 30548 transitions. [2022-11-22 02:47:03,749 INFO L78 Accepts]: Start accepts. Automaton has 21111 states and 30548 transitions. Word has length 374 [2022-11-22 02:47:03,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:47:03,750 INFO L495 AbstractCegarLoop]: Abstraction has 21111 states and 30548 transitions. [2022-11-22 02:47:03,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-11-22 02:47:03,750 INFO L276 IsEmpty]: Start isEmpty. Operand 21111 states and 30548 transitions. [2022-11-22 02:47:03,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-22 02:47:03,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:03,760 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 9, 8, 8, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:47:03,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:47:03,760 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 02:47:03,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:03,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2116882976, now seen corresponding path program 1 times [2022-11-22 02:47:03,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:03,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768741094] [2022-11-22 02:47:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:03,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1543 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2022-11-22 02:47:04,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:47:04,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768741094] [2022-11-22 02:47:04,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768741094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:47:04,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:47:04,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:47:04,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280752077] [2022-11-22 02:47:04,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:47:04,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:47:04,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:47:04,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:47:04,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:47:04,324 INFO L87 Difference]: Start difference. First operand 21111 states and 30548 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-22 02:47:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:08,512 INFO L93 Difference]: Finished difference Result 21117 states and 30553 transitions. [2022-11-22 02:47:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:47:08,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 289 [2022-11-22 02:47:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:08,597 INFO L225 Difference]: With dead ends: 21117 [2022-11-22 02:47:08,597 INFO L226 Difference]: Without dead ends: 21115 [2022-11-22 02:47:08,610 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 02:47:08,610 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1786 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:08,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 4742 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 02:47:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21115 states. [2022-11-22 02:47:10,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21115 to 21115. [2022-11-22 02:47:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21115 states, 13664 states have (on average 1.368193793911007) internal successors, (18695), 13898 states have internal predecessors, (18695), 5930 states have call successors, (5930), 1537 states have call predecessors, (5930), 1518 states have return successors, (5926), 5721 states have call predecessors, (5926), 5926 states have call successors, (5926) [2022-11-22 02:47:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21115 states to 21115 states and 30551 transitions. [2022-11-22 02:47:10,254 INFO L78 Accepts]: Start accepts. Automaton has 21115 states and 30551 transitions. Word has length 289 [2022-11-22 02:47:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:47:10,254 INFO L495 AbstractCegarLoop]: Abstraction has 21115 states and 30551 transitions. [2022-11-22 02:47:10,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-22 02:47:10,255 INFO L276 IsEmpty]: Start isEmpty. Operand 21115 states and 30551 transitions. [2022-11-22 02:47:10,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-22 02:47:10,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:10,266 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 10, 9, 9, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:47:10,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:47:10,267 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 02:47:10,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:10,267 INFO L85 PathProgramCache]: Analyzing trace with hash -971029653, now seen corresponding path program 1 times [2022-11-22 02:47:10,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:10,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842109388] [2022-11-22 02:47:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:10,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1576 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2022-11-22 02:47:10,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:47:10,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842109388] [2022-11-22 02:47:10,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842109388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:47:10,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:47:10,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:47:10,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444508498] [2022-11-22 02:47:10,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:47:10,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:47:10,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:47:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:47:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:47:10,812 INFO L87 Difference]: Start difference. First operand 21115 states and 30551 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-22 02:47:14,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:14,997 INFO L93 Difference]: Finished difference Result 21121 states and 30556 transitions. [2022-11-22 02:47:14,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:47:14,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 293 [2022-11-22 02:47:14,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:15,073 INFO L225 Difference]: With dead ends: 21121 [2022-11-22 02:47:15,073 INFO L226 Difference]: Without dead ends: 21119 [2022-11-22 02:47:15,086 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 02:47:15,086 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1786 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1788 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:15,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1788 Valid, 4742 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 02:47:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21119 states. [2022-11-22 02:47:16,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21119 to 21119. [2022-11-22 02:47:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21119 states, 13667 states have (on average 1.3681129728543207) internal successors, (18698), 13901 states have internal predecessors, (18698), 5930 states have call successors, (5930), 1538 states have call predecessors, (5930), 1519 states have return successors, (5926), 5721 states have call predecessors, (5926), 5926 states have call successors, (5926) [2022-11-22 02:47:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21119 states to 21119 states and 30554 transitions. [2022-11-22 02:47:16,639 INFO L78 Accepts]: Start accepts. Automaton has 21119 states and 30554 transitions. Word has length 293 [2022-11-22 02:47:16,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:47:16,640 INFO L495 AbstractCegarLoop]: Abstraction has 21119 states and 30554 transitions. [2022-11-22 02:47:16,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-22 02:47:16,640 INFO L276 IsEmpty]: Start isEmpty. Operand 21119 states and 30554 transitions. [2022-11-22 02:47:16,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-22 02:47:16,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:16,659 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 11, 10, 10, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:47:16,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 02:47:16,660 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 02:47:16,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:16,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1815534688, now seen corresponding path program 1 times [2022-11-22 02:47:16,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:16,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918453686] [2022-11-22 02:47:16,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:16,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:17,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1615 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2022-11-22 02:47:17,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:47:17,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918453686] [2022-11-22 02:47:17,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918453686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:47:17,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:47:17,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:47:17,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325447726] [2022-11-22 02:47:17,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:47:17,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:47:17,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:47:17,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:47:17,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:47:17,353 INFO L87 Difference]: Start difference. First operand 21119 states and 30554 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-22 02:47:21,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:21,087 INFO L93 Difference]: Finished difference Result 21125 states and 30559 transitions. [2022-11-22 02:47:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:47:21,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 299 [2022-11-22 02:47:21,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:21,138 INFO L225 Difference]: With dead ends: 21125 [2022-11-22 02:47:21,138 INFO L226 Difference]: Without dead ends: 21121 [2022-11-22 02:47:21,146 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 02:47:21,146 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1786 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:21,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 4742 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 02:47:21,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21121 states. [2022-11-22 02:47:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21121 to 21121. [2022-11-22 02:47:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21121 states, 13669 states have (on average 1.367985953617675) internal successors, (18699), 13902 states have internal predecessors, (18699), 5930 states have call successors, (5930), 1539 states have call predecessors, (5930), 1519 states have return successors, (5926), 5721 states have call predecessors, (5926), 5926 states have call successors, (5926) [2022-11-22 02:47:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21121 states to 21121 states and 30555 transitions. [2022-11-22 02:47:23,268 INFO L78 Accepts]: Start accepts. Automaton has 21121 states and 30555 transitions. Word has length 299 [2022-11-22 02:47:23,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:47:23,269 INFO L495 AbstractCegarLoop]: Abstraction has 21121 states and 30555 transitions. [2022-11-22 02:47:23,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-22 02:47:23,269 INFO L276 IsEmpty]: Start isEmpty. Operand 21121 states and 30555 transitions. [2022-11-22 02:47:23,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-11-22 02:47:23,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:23,291 INFO L195 NwaCegarLoop]: trace histogram [22, 18, 18, 18, 18, 18, 18, 12, 11, 11, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:47:23,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 02:47:23,292 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 02:47:23,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:23,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1706895317, now seen corresponding path program 1 times [2022-11-22 02:47:23,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:23,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433377995] [2022-11-22 02:47:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:23,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1656 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1634 trivial. 0 not checked. [2022-11-22 02:47:23,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:47:23,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433377995] [2022-11-22 02:47:23,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433377995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:47:23,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:47:23,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:47:23,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460881711] [2022-11-22 02:47:23,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:47:23,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:47:23,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:47:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:47:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:47:23,928 INFO L87 Difference]: Start difference. First operand 21121 states and 30555 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-22 02:47:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:27,064 INFO L93 Difference]: Finished difference Result 21121 states and 30555 transitions. [2022-11-22 02:47:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:47:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 303 [2022-11-22 02:47:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:27,134 INFO L225 Difference]: With dead ends: 21121 [2022-11-22 02:47:27,134 INFO L226 Difference]: Without dead ends: 20824 [2022-11-22 02:47:27,146 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 02:47:27,146 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1782 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 4739 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:27,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1782 Valid, 4739 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 02:47:27,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20824 states. [2022-11-22 02:47:28,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20824 to 20824. [2022-11-22 02:47:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20824 states, 13591 states have (on average 1.363475829593113) internal successors, (18531), 13734 states have internal predecessors, (18531), 5735 states have call successors, (5735), 1496 states have call predecessors, (5735), 1496 states have return successors, (5735), 5635 states have call predecessors, (5735), 5735 states have call successors, (5735) [2022-11-22 02:47:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20824 states to 20824 states and 30001 transitions. [2022-11-22 02:47:28,766 INFO L78 Accepts]: Start accepts. Automaton has 20824 states and 30001 transitions. Word has length 303 [2022-11-22 02:47:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:47:28,767 INFO L495 AbstractCegarLoop]: Abstraction has 20824 states and 30001 transitions. [2022-11-22 02:47:28,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-22 02:47:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 20824 states and 30001 transitions. [2022-11-22 02:47:28,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-22 02:47:28,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:28,784 INFO L195 NwaCegarLoop]: trace histogram [25, 18, 18, 18, 18, 18, 18, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:47:28,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 02:47:28,785 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 02:47:28,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:28,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1682965151, now seen corresponding path program 1 times [2022-11-22 02:47:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:28,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784660411] [2022-11-22 02:47:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:28,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2022-11-22 02:47:29,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:47:29,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784660411] [2022-11-22 02:47:29,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784660411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:47:29,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:47:29,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:47:29,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501581152] [2022-11-22 02:47:29,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:47:29,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:47:29,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:47:29,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:47:29,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:47:29,190 INFO L87 Difference]: Start difference. First operand 20824 states and 30001 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-22 02:47:36,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:36,032 INFO L93 Difference]: Finished difference Result 47744 states and 68700 transitions. [2022-11-22 02:47:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:47:36,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 298 [2022-11-22 02:47:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:36,119 INFO L225 Difference]: With dead ends: 47744 [2022-11-22 02:47:36,119 INFO L226 Difference]: Without dead ends: 27000 [2022-11-22 02:47:36,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:47:36,169 INFO L413 NwaCegarLoop]: 2856 mSDtfsCounter, 1515 mSDsluCounter, 7211 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 10067 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:36,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 10067 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-22 02:47:36,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27000 states. [2022-11-22 02:47:38,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27000 to 26956. [2022-11-22 02:47:38,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26956 states, 17528 states have (on average 1.357371063441351) internal successors, (23792), 17725 states have internal predecessors, (23792), 7474 states have call successors, (7474), 1942 states have call predecessors, (7474), 1952 states have return successors, (7484), 7344 states have call predecessors, (7484), 7474 states have call successors, (7484) [2022-11-22 02:47:38,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26956 states to 26956 states and 38750 transitions. [2022-11-22 02:47:38,897 INFO L78 Accepts]: Start accepts. Automaton has 26956 states and 38750 transitions. Word has length 298 [2022-11-22 02:47:38,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:47:38,897 INFO L495 AbstractCegarLoop]: Abstraction has 26956 states and 38750 transitions. [2022-11-22 02:47:38,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-22 02:47:38,898 INFO L276 IsEmpty]: Start isEmpty. Operand 26956 states and 38750 transitions. [2022-11-22 02:47:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-22 02:47:38,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:38,915 INFO L195 NwaCegarLoop]: trace histogram [25, 18, 18, 18, 18, 18, 18, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:47:38,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 02:47:38,915 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 02:47:38,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1928193728, now seen corresponding path program 1 times [2022-11-22 02:47:38,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:38,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135760450] [2022-11-22 02:47:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:38,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2022-11-22 02:47:39,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:47:39,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135760450] [2022-11-22 02:47:39,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135760450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:47:39,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:47:39,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:47:39,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978431456] [2022-11-22 02:47:39,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:47:39,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:47:39,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:47:39,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:47:39,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:47:39,493 INFO L87 Difference]: Start difference. First operand 26956 states and 38750 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-22 02:47:47,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:47,150 INFO L93 Difference]: Finished difference Result 60028 states and 86238 transitions. [2022-11-22 02:47:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:47:47,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 299 [2022-11-22 02:47:47,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:47,255 INFO L225 Difference]: With dead ends: 60028 [2022-11-22 02:47:47,256 INFO L226 Difference]: Without dead ends: 33152 [2022-11-22 02:47:47,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:47:47,321 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 1514 mSDsluCounter, 7221 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 10082 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:47,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 10082 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-22 02:47:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33152 states. [2022-11-22 02:47:50,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33152 to 33108. [2022-11-22 02:47:50,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33108 states, 21485 states have (on average 1.3531766348615313) internal successors, (29073), 21736 states have internal predecessors, (29073), 9213 states have call successors, (9213), 2388 states have call predecessors, (9213), 2408 states have return successors, (9233), 9053 states have call predecessors, (9233), 9213 states have call successors, (9233) [2022-11-22 02:47:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33108 states to 33108 states and 47519 transitions. [2022-11-22 02:47:50,796 INFO L78 Accepts]: Start accepts. Automaton has 33108 states and 47519 transitions. Word has length 299 [2022-11-22 02:47:50,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:47:50,796 INFO L495 AbstractCegarLoop]: Abstraction has 33108 states and 47519 transitions. [2022-11-22 02:47:50,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-22 02:47:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand 33108 states and 47519 transitions. [2022-11-22 02:47:50,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-22 02:47:50,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:50,808 INFO L195 NwaCegarLoop]: trace histogram [25, 18, 18, 18, 18, 18, 18, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:47:50,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 02:47:50,808 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 02:47:50,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:50,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1854839582, now seen corresponding path program 1 times [2022-11-22 02:47:50,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:50,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044727464] [2022-11-22 02:47:50,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:50,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2022-11-22 02:47:51,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:47:51,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044727464] [2022-11-22 02:47:51,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044727464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:47:51,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:47:51,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:47:51,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043772610] [2022-11-22 02:47:51,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:47:51,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:47:51,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:47:51,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:47:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:47:51,184 INFO L87 Difference]: Start difference. First operand 33108 states and 47519 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-22 02:47:59,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:59,615 INFO L93 Difference]: Finished difference Result 72617 states and 104132 transitions. [2022-11-22 02:47:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:47:59,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 300 [2022-11-22 02:47:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:59,722 INFO L225 Difference]: With dead ends: 72617 [2022-11-22 02:47:59,722 INFO L226 Difference]: Without dead ends: 39589 [2022-11-22 02:47:59,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:47:59,779 INFO L413 NwaCegarLoop]: 2859 mSDtfsCounter, 1526 mSDsluCounter, 7207 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 10066 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:59,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 10066 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-22 02:47:59,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39589 states.