./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/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_36f8b738-e72c-45db-b68c-7cefa1e76fec/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/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_36f8b738-e72c-45db-b68c-7cefa1e76fec/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 2ff699a14ff18600b4164aac890b6c04e9203457f89a66ec1bef9ac9dce5edac --- 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 00:27:28,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:27:28,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:27:28,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:27:28,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:27:28,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:27:28,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:27:28,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:27:28,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:27:28,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:27:28,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:27:28,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:27:28,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:27:28,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:27:28,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:27:28,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:27:28,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:27:28,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:27:28,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:27:28,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:27:28,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:27:28,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:27:28,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:27:28,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:27:28,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:27:28,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:27:28,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:27:28,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:27:28,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:27:28,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:27:28,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:27:28,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:27:28,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:27:28,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:27:28,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:27:28,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:27:28,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:27:28,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:27:28,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:27:28,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:27:28,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:27:28,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:27:28,475 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:27:28,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:27:28,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:27:28,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:27:28,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:27:28,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:27:28,479 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:27:28,479 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:27:28,480 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:27:28,480 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:27:28,481 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:27:28,482 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:27:28,482 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:27:28,482 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:27:28,482 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:27:28,483 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:27:28,483 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:27:28,483 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:27:28,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:27:28,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:27:28,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:27:28,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:27:28,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:27:28,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:27:28,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:27:28,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:27:28,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:27:28,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:27:28,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:27:28,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:27:28,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:27:28,489 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:27:28,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:27:28,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:27:28,490 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:27:28,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:27:28,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:27:28,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:27:28,492 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_36f8b738-e72c-45db-b68c-7cefa1e76fec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ff699a14ff18600b4164aac890b6c04e9203457f89a66ec1bef9ac9dce5edac [2022-11-22 00:27:28,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:27:28,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:27:28,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:27:28,916 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:27:28,917 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:27:28,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2022-11-22 00:27:32,087 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:27:32,925 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:27:32,925 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2022-11-22 00:27:32,998 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/bin/utaipan-g80aRyZoba/data/2ed74962a/9e62b811acb74a2eb915218f1ccf3f57/FLAGa883efe94 [2022-11-22 00:27:33,021 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/bin/utaipan-g80aRyZoba/data/2ed74962a/9e62b811acb74a2eb915218f1ccf3f57 [2022-11-22 00:27:33,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:27:33,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:27:33,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:27:33,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:27:33,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:27:33,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:27:33" (1/1) ... [2022-11-22 00:27:33,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250c0e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:33, skipping insertion in model container [2022-11-22 00:27:33,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:27:33" (1/1) ... [2022-11-22 00:27:33,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:27:33,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:27:39,320 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_36f8b738-e72c-45db-b68c-7cefa1e76fec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555016,555029] [2022-11-22 00:27:39,325 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_36f8b738-e72c-45db-b68c-7cefa1e76fec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555185,555198] [2022-11-22 00:27:39,325 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_36f8b738-e72c-45db-b68c-7cefa1e76fec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555352,555365] [2022-11-22 00:27:39,326 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_36f8b738-e72c-45db-b68c-7cefa1e76fec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555520,555533] [2022-11-22 00:27:39,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:27:39,440 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:27:40,211 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_36f8b738-e72c-45db-b68c-7cefa1e76fec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555016,555029] [2022-11-22 00:27:40,212 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_36f8b738-e72c-45db-b68c-7cefa1e76fec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555185,555198] [2022-11-22 00:27:40,213 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_36f8b738-e72c-45db-b68c-7cefa1e76fec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555352,555365] [2022-11-22 00:27:40,214 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_36f8b738-e72c-45db-b68c-7cefa1e76fec/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555520,555533] [2022-11-22 00:27:40,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:27:40,710 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:27:40,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40 WrapperNode [2022-11-22 00:27:40,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:27:40,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:27:40,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:27:40,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:27:40,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40" (1/1) ... [2022-11-22 00:27:40,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40" (1/1) ... [2022-11-22 00:27:41,308 INFO L138 Inliner]: procedures = 740, calls = 4348, calls flagged for inlining = 368, calls inlined = 334, statements flattened = 9916 [2022-11-22 00:27:41,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:27:41,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:27:41,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:27:41,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:27:41,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40" (1/1) ... [2022-11-22 00:27:41,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40" (1/1) ... [2022-11-22 00:27:41,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40" (1/1) ... [2022-11-22 00:27:41,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40" (1/1) ... [2022-11-22 00:27:41,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40" (1/1) ... [2022-11-22 00:27:41,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40" (1/1) ... [2022-11-22 00:27:41,834 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40" (1/1) ... [2022-11-22 00:27:41,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40" (1/1) ... [2022-11-22 00:27:41,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:27:41,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:27:41,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:27:41,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:27:41,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40" (1/1) ... [2022-11-22 00:27:41,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:27:41,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:27:41,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:27:42,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f8b738-e72c-45db-b68c-7cefa1e76fec/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:27:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2022-11-22 00:27:42,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2022-11-22 00:27:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 00:27:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 00:27:42,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 00:27:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 00:27:42,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2022-11-22 00:27:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2022-11-22 00:27:42,035 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_rx_irq [2022-11-22 00:27:42,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_rx_irq [2022-11-22 00:27:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_setup_rx_resources [2022-11-22 00:27:42,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_setup_rx_resources [2022-11-22 00:27:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:27:42,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:27:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_tx_ctxtdesc [2022-11-22 00:27:42,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_tx_ctxtdesc [2022-11-22 00:27:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure skb_header_pointer [2022-11-22 00:27:42,037 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_header_pointer [2022-11-22 00:27:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 00:27:42,038 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 00:27:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_eitr [2022-11-22 00:27:42,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_eitr [2022-11-22 00:27:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-22 00:27:42,040 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-22 00:27:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:27:42,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 00:27:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_uc_addr_vf [2022-11-22 00:27:42,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_uc_addr_vf [2022-11-22 00:27:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2022-11-22 00:27:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2022-11-22 00:27:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 00:27:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 00:27:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 00:27:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 00:27:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~bool~0~TO~~s32~0 [2022-11-22 00:27:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~bool~0~TO~~s32~0 [2022-11-22 00:27:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 00:27:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 00:27:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_desc_unused [2022-11-22 00:27:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_desc_unused [2022-11-22 00:27:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_ack [2022-11-22 00:27:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_ack [2022-11-22 00:27:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_setup_tx_resources [2022-11-22 00:27:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_setup_tx_resources [2022-11-22 00:27:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_remove [2022-11-22 00:27:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_remove [2022-11-22 00:27:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 00:27:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 00:27:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 00:27:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 00:27:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 00:27:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 00:27:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 00:27:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 00:27:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 00:27:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 00:27:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 00:27:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 00:27:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-22 00:27:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-22 00:27:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:27:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-22 00:27:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-22 00:27:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_resume [2022-11-22 00:27:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_resume [2022-11-22 00:27:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-22 00:27:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-22 00:27:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-22 00:27:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-22 00:27:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-22 00:27:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-22 00:27:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_mbx_vf [2022-11-22 00:27:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_mbx_vf [2022-11-22 00:27:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_posted_mbx [2022-11-22 00:27:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_posted_mbx [2022-11-22 00:27:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_mbx_vf [2022-11-22 00:27:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_mbx_vf [2022-11-22 00:27:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 00:27:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 00:27:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-22 00:27:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-22 00:27:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 00:27:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reinit_locked [2022-11-22 00:27:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reinit_locked [2022-11-22 00:27:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_up [2022-11-22 00:27:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_up [2022-11-22 00:27:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2022-11-22 00:27:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2022-11-22 00:27:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 00:27:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 00:27:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 00:27:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 00:27:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_irq [2022-11-22 00:27:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_irq [2022-11-22 00:27:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_rar_vf [2022-11-22 00:27:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_rar_vf [2022-11-22 00:27:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:27:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 00:27:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 00:27:42,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_78 [2022-11-22 00:27:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_78 [2022-11-22 00:27:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header_len [2022-11-22 00:27:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header_len [2022-11-22 00:27:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:27:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 00:27:42,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 00:27:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_vfta_vf [2022-11-22 00:27:42,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_vfta_vf [2022-11-22 00:27:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-22 00:27:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-22 00:27:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 00:27:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 00:27:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_down [2022-11-22 00:27:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_down [2022-11-22 00:27:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 00:27:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 00:27:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-22 00:27:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-22 00:27:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 00:27:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 00:27:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure map_vector_to_txq [2022-11-22 00:27:42,074 INFO L138 BoogieDeclarations]: Found implementation of procedure map_vector_to_txq [2022-11-22 00:27:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2022-11-22 00:27:42,074 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2022-11-22 00:27:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_all_rx_resources [2022-11-22 00:27:42,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_all_rx_resources [2022-11-22 00:27:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 00:27:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 00:27:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_94 [2022-11-22 00:27:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_94 [2022-11-22 00:27:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-22 00:27:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-22 00:27:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_tx_timeout [2022-11-22 00:27:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_tx_timeout [2022-11-22 00:27:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 00:27:42,076 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 00:27:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-11-22 00:27:42,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-11-22 00:27:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_negotiate_api [2022-11-22 00:27:42,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_negotiate_api [2022-11-22 00:27:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:27:42,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 00:27:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:27:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 00:27:42,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 00:27:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 00:27:42,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 00:27:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 00:27:42,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 00:27:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_alloc_rx_buffers [2022-11-22 00:27:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_alloc_rx_buffers [2022-11-22 00:27:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 00:27:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 00:27:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_interrupt_scheme [2022-11-22 00:27:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_interrupt_scheme [2022-11-22 00:27:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-22 00:27:42,079 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-22 00:27:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:27:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-22 00:27:42,080 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-22 00:27:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 00:27:42,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 00:27:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 00:27:42,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 00:27:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:27:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 00:27:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_tx_resources [2022-11-22 00:27:42,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_tx_resources [2022-11-22 00:27:42,081 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_hw_vf [2022-11-22 00:27:42,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_hw_vf [2022-11-22 00:27:42,081 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-22 00:27:42,081 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-22 00:27:42,081 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_maybe_stop_tx [2022-11-22 00:27:42,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_maybe_stop_tx [2022-11-22 00:27:42,082 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_msg_vf [2022-11-22 00:27:42,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_msg_vf [2022-11-22 00:27:42,082 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 00:27:42,082 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 00:27:42,084 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_busy_poll_recv [2022-11-22 00:27:42,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_busy_poll_recv [2022-11-22 00:27:42,084 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_posted_mbx [2022-11-22 00:27:42,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_posted_mbx [2022-11-22 00:27:42,084 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~TO~~s32~0 [2022-11-22 00:27:42,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~TO~~s32~0 [2022-11-22 00:27:42,085 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-22 00:27:42,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-22 00:27:42,085 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-22 00:27:42,085 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-22 00:27:42,085 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 00:27:42,085 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 00:27:42,085 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2022-11-22 00:27:42,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2022-11-22 00:27:42,086 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_last_counter_stats [2022-11-22 00:27:42,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_last_counter_stats [2022-11-22 00:27:42,086 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_io_resume [2022-11-22 00:27:42,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_io_resume [2022-11-22 00:27:42,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 00:27:42,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 00:27:42,086 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_up_complete [2022-11-22 00:27:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_up_complete [2022-11-22 00:27:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-22 00:27:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-22 00:27:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_ivar [2022-11-22 00:27:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_ivar [2022-11-22 00:27:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_bit_vf [2022-11-22 00:27:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_bit_vf [2022-11-22 00:27:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 00:27:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 00:27:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-22 00:27:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-22 00:27:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_shutdown [2022-11-22 00:27:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_shutdown [2022-11-22 00:27:42,088 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_interrupt_capability [2022-11-22 00:27:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_interrupt_capability [2022-11-22 00:27:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:27:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:27:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-22 00:27:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-22 00:27:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_nway_reset [2022-11-22 00:27:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_nway_reset [2022-11-22 00:27:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-22 00:27:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-22 00:27:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_obtain_mbx_lock_vf [2022-11-22 00:27:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_obtain_mbx_lock_vf [2022-11-22 00:27:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_tx_ring [2022-11-22 00:27:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_tx_ring [2022-11-22 00:27:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_rst_vf [2022-11-22 00:27:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_rst_vf [2022-11-22 00:27:42,091 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_v2p_mailbox [2022-11-22 00:27:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_v2p_mailbox [2022-11-22 00:27:42,091 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-22 00:27:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-22 00:27:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_ack_vf [2022-11-22 00:27:42,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_ack_vf [2022-11-22 00:27:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 00:27:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 00:27:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:27:42,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:27:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_stats [2022-11-22 00:27:42,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_stats [2022-11-22 00:27:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-22 00:27:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-22 00:27:42,098 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_irq_enable [2022-11-22 00:27:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_irq_enable [2022-11-22 00:27:42,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:27:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 00:27:42,098 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-22 00:27:42,099 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-22 00:27:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 00:27:42,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 00:27:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-22 00:27:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_start_hw_vf [2022-11-22 00:27:42,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_start_hw_vf [2022-11-22 00:27:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-22 00:27:42,099 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-22 00:27:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-22 00:27:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-22 00:27:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure napi_hash_del [2022-11-22 00:27:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_hash_del [2022-11-22 00:27:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 00:27:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 00:27:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2022-11-22 00:27:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2022-11-22 00:27:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_all_queues [2022-11-22 00:27:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_all_queues [2022-11-22 00:27:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_rx_mode [2022-11-22 00:27:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_rx_mode [2022-11-22 00:27:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-22 00:27:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-22 00:27:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-22 00:27:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-22 00:27:42,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 00:27:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 00:27:42,102 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~X~~u32~0~TO~~s32~0 [2022-11-22 00:27:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~X~~u32~0~TO~~s32~0 [2022-11-22 00:27:42,102 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_msg [2022-11-22 00:27:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_msg [2022-11-22 00:27:42,102 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_suspend [2022-11-22 00:27:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_suspend [2022-11-22 00:27:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-22 00:27:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-22 00:27:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-22 00:27:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-22 00:27:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 00:27:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 00:27:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:27:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 00:27:42,104 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 00:27:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-22 00:27:42,104 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-22 00:27:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 00:27:42,104 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 00:27:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_link_test [2022-11-22 00:27:42,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_link_test [2022-11-22 00:27:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:27:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_vlan_rx_add_vid [2022-11-22 00:27:42,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_vlan_rx_add_vid [2022-11-22 00:27:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure map_vector_to_rxq [2022-11-22 00:27:42,105 INFO L138 BoogieDeclarations]: Found implementation of procedure map_vector_to_rxq [2022-11-22 00:27:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~~bool~0~TO~~s32~0 [2022-11-22 00:27:42,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~~bool~0~TO~~s32~0 [2022-11-22 00:27:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-22 00:27:42,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-22 00:27:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-22 00:27:42,106 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-22 00:27:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:27:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_mac_addr_vf [2022-11-22 00:27:42,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_mac_addr_vf [2022-11-22 00:27:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_configure [2022-11-22 00:27:42,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_configure [2022-11-22 00:27:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_all_tx_resources [2022-11-22 00:27:42,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_all_tx_resources [2022-11-22 00:27:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-22 00:27:42,107 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-22 00:27:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-22 00:27:42,107 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-22 00:27:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_queues [2022-11-22 00:27:42,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_queues [2022-11-22 00:27:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 00:27:42,108 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 00:27:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-22 00:27:42,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-22 00:27:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_msg_read_ack [2022-11-22 00:27:42,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_msg_read_ack [2022-11-22 00:27:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 00:27:42,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 00:27:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-22 00:27:42,109 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-22 00:27:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 00:27:42,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 00:27:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 00:27:42,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 00:27:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-22 00:27:42,110 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-22 00:27:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_open [2022-11-22 00:27:42,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_open [2022-11-22 00:27:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-22 00:27:42,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-22 00:27:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_93 [2022-11-22 00:27:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_93 [2022-11-22 00:27:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ixgbevf_exit_module_17_2 [2022-11-22 00:27:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ixgbevf_exit_module_17_2 [2022-11-22 00:27:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_mac_link_vf [2022-11-22 00:27:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_mac_link_vf [2022-11-22 00:27:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clear_interrupt_scheme [2022-11-22 00:27:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clear_interrupt_scheme [2022-11-22 00:27:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_regs_len [2022-11-22 00:27:42,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_regs_len [2022-11-22 00:27:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-22 00:27:42,112 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-22 00:27:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 00:27:42,112 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 00:27:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 00:27:42,112 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 00:27:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-22 00:27:42,113 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-22 00:27:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_mc_addr_list_vf [2022-11-22 00:27:42,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_mc_addr_list_vf [2022-11-22 00:27:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_rx_resources [2022-11-22 00:27:42,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_rx_resources [2022-11-22 00:27:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 00:27:42,113 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 00:27:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_77 [2022-11-22 00:27:42,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_77 [2022-11-22 00:27:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-22 00:27:42,114 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-22 00:27:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 00:27:42,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 00:27:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:27:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_mbx_params_vf [2022-11-22 00:27:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_mbx_params_vf [2022-11-22 00:27:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-22 00:27:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-22 00:27:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_q_vectors [2022-11-22 00:27:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_q_vectors [2022-11-22 00:27:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:27:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:27:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_disable_rx_queue [2022-11-22 00:27:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_disable_rx_queue [2022-11-22 00:27:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset [2022-11-22 00:27:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset [2022-11-22 00:27:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_close [2022-11-22 00:27:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_close [2022-11-22 00:27:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-22 00:27:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-22 00:27:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2022-11-22 00:27:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2022-11-22 00:27:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-22 00:27:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-22 00:27:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 00:27:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 00:27:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-22 00:27:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-22 00:27:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-22 00:27:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-22 00:27:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-22 00:27:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-22 00:27:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2022-11-22 00:27:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2022-11-22 00:27:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-22 00:27:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-22 00:27:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-22 00:27:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-22 00:27:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 00:27:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 00:27:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-22 00:27:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-22 00:27:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-22 00:27:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-22 00:27:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_rx_ring [2022-11-22 00:27:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_rx_ring [2022-11-22 00:27:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_stop_hw_vf [2022-11-22 00:27:42,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_stop_hw_vf [2022-11-22 00:27:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2022-11-22 00:27:42,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2022-11-22 00:27:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_hw_vf [2022-11-22 00:27:42,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_hw_vf [2022-11-22 00:27:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-22 00:27:42,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-22 00:27:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 00:27:42,119 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 00:27:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_unmap_and_free_tx_resource [2022-11-22 00:27:42,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_unmap_and_free_tx_resource [2022-11-22 00:27:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:27:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-22 00:27:42,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-22 00:27:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 00:27:42,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 00:27:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_trap [2022-11-22 00:27:42,120 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_trap [2022-11-22 00:27:43,810 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:27:43,816 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:27:43,995 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:31:00,264 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 00:31:00,423 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:31:05,295 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:31:05,295 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-22 00:31:05,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:31:05 BoogieIcfgContainer [2022-11-22 00:31:05,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:31:05,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:31:05,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:31:05,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:31:05,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:27:33" (1/3) ... [2022-11-22 00:31:05,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a306841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:31:05, skipping insertion in model container [2022-11-22 00:31:05,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:27:40" (2/3) ... [2022-11-22 00:31:05,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a306841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:31:05, skipping insertion in model container [2022-11-22 00:31:05,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:31:05" (3/3) ... [2022-11-22 00:31:05,318 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2022-11-22 00:31:05,342 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:31:05,342 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 00:31:05,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:31:05,458 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;@486b678b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:31:05,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 00:31:05,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 2782 states, 1659 states have (on average 1.2965641952983724) internal successors, (2151), 1703 states have internal predecessors, (2151), 915 states have call successors, (915), 206 states have call predecessors, (915), 205 states have return successors, (908), 904 states have call predecessors, (908), 908 states have call successors, (908) [2022-11-22 00:31:05,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-22 00:31:05,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:05,496 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:05,497 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 00:31:05,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:05,502 INFO L85 PathProgramCache]: Analyzing trace with hash -224528995, now seen corresponding path program 1 times [2022-11-22 00:31:05,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:05,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331383637] [2022-11-22 00:31:05,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:05,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-22 00:31:08,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:08,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331383637] [2022-11-22 00:31:08,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331383637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:08,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:08,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:31:08,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208441201] [2022-11-22 00:31:08,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:08,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:31:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:08,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:31:08,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:31:08,047 INFO L87 Difference]: Start difference. First operand has 2782 states, 1659 states have (on average 1.2965641952983724) internal successors, (2151), 1703 states have internal predecessors, (2151), 915 states have call successors, (915), 206 states have call predecessors, (915), 205 states have return successors, (908), 904 states have call predecessors, (908), 908 states have call successors, (908) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-22 00:31:10,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:16,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:18,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:24,227 INFO L93 Difference]: Finished difference Result 8133 states and 11773 transitions. [2022-11-22 00:31:24,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:31:24,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 311 [2022-11-22 00:31:24,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:24,283 INFO L225 Difference]: With dead ends: 8133 [2022-11-22 00:31:24,283 INFO L226 Difference]: Without dead ends: 5399 [2022-11-22 00:31:24,304 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 00:31:24,308 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 3761 mSDsluCounter, 3360 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3761 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:24,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3761 Valid, 7597 Invalid, 1164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1154 Invalid, 3 Unknown, 0 Unchecked, 15.6s Time] [2022-11-22 00:31:24,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5399 states. [2022-11-22 00:31:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5399 to 5395. [2022-11-22 00:31:24,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5395 states, 3241 states have (on average 1.2940450478247454) internal successors, (4194), 3326 states have internal predecessors, (4194), 1745 states have call successors, (1745), 407 states have call predecessors, (1745), 406 states have return successors, (1741), 1733 states have call predecessors, (1741), 1741 states have call successors, (1741) [2022-11-22 00:31:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5395 states to 5395 states and 7680 transitions. [2022-11-22 00:31:24,729 INFO L78 Accepts]: Start accepts. Automaton has 5395 states and 7680 transitions. Word has length 311 [2022-11-22 00:31:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:24,732 INFO L495 AbstractCegarLoop]: Abstraction has 5395 states and 7680 transitions. [2022-11-22 00:31:24,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-22 00:31:24,733 INFO L276 IsEmpty]: Start isEmpty. Operand 5395 states and 7680 transitions. [2022-11-22 00:31:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-22 00:31:24,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:24,746 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:24,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:31:24,747 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 00:31:24,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:24,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1390099649, now seen corresponding path program 1 times [2022-11-22 00:31:24,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:24,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071503048] [2022-11-22 00:31:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:24,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-22 00:31:26,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:26,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071503048] [2022-11-22 00:31:26,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071503048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:26,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:26,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:31:26,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910840161] [2022-11-22 00:31:26,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:26,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:31:26,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:31:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:31:26,298 INFO L87 Difference]: Start difference. First operand 5395 states and 7680 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-22 00:31:28,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:32,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:34,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:43,330 INFO L93 Difference]: Finished difference Result 12073 states and 17186 transitions. [2022-11-22 00:31:43,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:31:43,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 322 [2022-11-22 00:31:43,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:43,387 INFO L225 Difference]: With dead ends: 12073 [2022-11-22 00:31:43,388 INFO L226 Difference]: Without dead ends: 6737 [2022-11-22 00:31:43,412 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 00:31:43,413 INFO L413 NwaCegarLoop]: 4323 mSDtfsCounter, 2843 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2843 SdHoareTripleChecker+Valid, 7650 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:43,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2843 Valid, 7650 Invalid, 1288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1266 Invalid, 3 Unknown, 0 Unchecked, 16.3s Time] [2022-11-22 00:31:43,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6737 states. [2022-11-22 00:31:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6737 to 6708. [2022-11-22 00:31:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6708 states, 4066 states have (on average 1.2924249877029022) internal successors, (5255), 4168 states have internal predecessors, (5255), 2135 states have call successors, (2135), 506 states have call predecessors, (2135), 504 states have return successors, (2131), 2118 states have call predecessors, (2131), 2131 states have call successors, (2131) [2022-11-22 00:31:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6708 states to 6708 states and 9521 transitions. [2022-11-22 00:31:43,804 INFO L78 Accepts]: Start accepts. Automaton has 6708 states and 9521 transitions. Word has length 322 [2022-11-22 00:31:43,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:43,809 INFO L495 AbstractCegarLoop]: Abstraction has 6708 states and 9521 transitions. [2022-11-22 00:31:43,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-22 00:31:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 6708 states and 9521 transitions. [2022-11-22 00:31:43,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-22 00:31:43,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:43,820 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:43,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:31:43,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:31:43,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:43,821 INFO L85 PathProgramCache]: Analyzing trace with hash 745132791, now seen corresponding path program 1 times [2022-11-22 00:31:43,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:43,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483094231] [2022-11-22 00:31:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:43,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-22 00:31:44,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:44,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483094231] [2022-11-22 00:31:44,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483094231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:44,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:44,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:31:44,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643392197] [2022-11-22 00:31:44,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:44,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:31:44,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:44,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:31:44,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:31:44,964 INFO L87 Difference]: Start difference. First operand 6708 states and 9521 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-22 00:31:47,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:55,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:57,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:31:59,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:59,210 INFO L93 Difference]: Finished difference Result 14575 states and 20609 transitions. [2022-11-22 00:31:59,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:31:59,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 328 [2022-11-22 00:31:59,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:59,263 INFO L225 Difference]: With dead ends: 14575 [2022-11-22 00:31:59,264 INFO L226 Difference]: Without dead ends: 7926 [2022-11-22 00:31:59,291 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 00:31:59,292 INFO L413 NwaCegarLoop]: 4030 mSDtfsCounter, 2806 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 7357 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:59,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2806 Valid, 7357 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1188 Invalid, 3 Unknown, 0 Unchecked, 13.9s Time] [2022-11-22 00:31:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7926 states. [2022-11-22 00:31:59,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7926 to 7895. [2022-11-22 00:31:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7895 states, 4787 states have (on average 1.2907875496135366) internal successors, (6179), 4907 states have internal predecessors, (6179), 2471 states have call successors, (2471), 637 states have call predecessors, (2471), 634 states have return successors, (2468), 2442 states have call predecessors, (2468), 2467 states have call successors, (2468) [2022-11-22 00:31:59,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7895 states to 7895 states and 11118 transitions. [2022-11-22 00:31:59,723 INFO L78 Accepts]: Start accepts. Automaton has 7895 states and 11118 transitions. Word has length 328 [2022-11-22 00:31:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:59,725 INFO L495 AbstractCegarLoop]: Abstraction has 7895 states and 11118 transitions. [2022-11-22 00:31:59,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-22 00:31:59,725 INFO L276 IsEmpty]: Start isEmpty. Operand 7895 states and 11118 transitions. [2022-11-22 00:31:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-11-22 00:31:59,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:59,734 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 4, 4, 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] [2022-11-22 00:31:59,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:31:59,734 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 00:31:59,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:59,735 INFO L85 PathProgramCache]: Analyzing trace with hash -360338404, now seen corresponding path program 1 times [2022-11-22 00:31:59,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:59,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781795501] [2022-11-22 00:31:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:59,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3519 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3519 trivial. 0 not checked. [2022-11-22 00:32:02,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:02,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781795501] [2022-11-22 00:32:02,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781795501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:02,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:02,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:02,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127590203] [2022-11-22 00:32:02,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:02,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:02,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:02,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:02,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:02,341 INFO L87 Difference]: Start difference. First operand 7895 states and 11118 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 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 00:32:04,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:16,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:18,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:24,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:24,224 INFO L93 Difference]: Finished difference Result 15165 states and 21398 transitions. [2022-11-22 00:32:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:32:24,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 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 353 [2022-11-22 00:32:24,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:24,315 INFO L225 Difference]: With dead ends: 15165 [2022-11-22 00:32:24,315 INFO L226 Difference]: Without dead ends: 15163 [2022-11-22 00:32:24,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:24,324 INFO L413 NwaCegarLoop]: 4262 mSDtfsCounter, 3841 mSDsluCounter, 11795 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3856 SdHoareTripleChecker+Valid, 16057 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:24,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3856 Valid, 16057 Invalid, 2300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2294 Invalid, 3 Unknown, 0 Unchecked, 21.2s Time] [2022-11-22 00:32:24,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15163 states. [2022-11-22 00:32:25,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15163 to 15154. [2022-11-22 00:32:25,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15154 states, 9173 states have (on average 1.291180638831353) internal successors, (11844), 9410 states have internal predecessors, (11844), 4754 states have call successors, (4754), 1230 states have call predecessors, (4754), 1224 states have return successors, (4792), 4693 states have call predecessors, (4792), 4746 states have call successors, (4792) [2022-11-22 00:32:25,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15154 states to 15154 states and 21390 transitions. [2022-11-22 00:32:25,099 INFO L78 Accepts]: Start accepts. Automaton has 15154 states and 21390 transitions. Word has length 353 [2022-11-22 00:32:25,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:25,100 INFO L495 AbstractCegarLoop]: Abstraction has 15154 states and 21390 transitions. [2022-11-22 00:32:25,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 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 00:32:25,100 INFO L276 IsEmpty]: Start isEmpty. Operand 15154 states and 21390 transitions. [2022-11-22 00:32:25,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-11-22 00:32:25,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:25,111 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 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, 1, 1, 1, 1, 1, 1, 1, 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 00:32:25,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:32:25,111 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 00:32:25,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:25,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2008346106, now seen corresponding path program 1 times [2022-11-22 00:32:25,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:25,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581596552] [2022-11-22 00:32:25,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:25,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3527 trivial. 0 not checked. [2022-11-22 00:32:27,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:27,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581596552] [2022-11-22 00:32:27,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581596552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:27,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:27,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:27,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218444768] [2022-11-22 00:32:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:27,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:27,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:27,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:27,272 INFO L87 Difference]: Start difference. First operand 15154 states and 21390 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-22 00:32:29,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:42,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:44,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:32:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:49,434 INFO L93 Difference]: Finished difference Result 22515 states and 31728 transitions. [2022-11-22 00:32:49,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:32:49,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 362 [2022-11-22 00:32:49,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:49,549 INFO L225 Difference]: With dead ends: 22515 [2022-11-22 00:32:49,549 INFO L226 Difference]: Without dead ends: 22513 [2022-11-22 00:32:49,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:49,565 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 3823 mSDsluCounter, 11785 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3837 SdHoareTripleChecker+Valid, 16045 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:49,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3837 Valid, 16045 Invalid, 2306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2301 Invalid, 3 Unknown, 0 Unchecked, 21.3s Time] [2022-11-22 00:32:49,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22513 states. [2022-11-22 00:32:50,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22513 to 22507. [2022-11-22 00:32:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22507 states, 13613 states have (on average 1.2908249467420847) internal successors, (17572), 13970 states have internal predecessors, (17572), 7058 states have call successors, (7058), 1842 states have call predecessors, (7058), 1833 states have return successors, (7093), 6968 states have call predecessors, (7093), 7046 states have call successors, (7093) [2022-11-22 00:32:50,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22507 states to 22507 states and 31723 transitions. [2022-11-22 00:32:50,779 INFO L78 Accepts]: Start accepts. Automaton has 22507 states and 31723 transitions. Word has length 362 [2022-11-22 00:32:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:50,781 INFO L495 AbstractCegarLoop]: Abstraction has 22507 states and 31723 transitions. [2022-11-22 00:32:50,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-22 00:32:50,782 INFO L276 IsEmpty]: Start isEmpty. Operand 22507 states and 31723 transitions. [2022-11-22 00:32:50,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-22 00:32:50,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:50,792 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:50,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:32:50,792 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 00:32:50,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash -780925241, now seen corresponding path program 1 times [2022-11-22 00:32:50,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:50,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580858687] [2022-11-22 00:32:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:50,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3534 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3530 trivial. 0 not checked. [2022-11-22 00:32:52,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:52,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580858687] [2022-11-22 00:32:52,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580858687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:52,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:52,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:32:52,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381072865] [2022-11-22 00:32:52,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:52,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:52,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:52,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:52,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:32:52,975 INFO L87 Difference]: Start difference. First operand 22507 states and 31723 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-22 00:32:55,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:08,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:10,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:15,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:15,835 INFO L93 Difference]: Finished difference Result 22519 states and 31731 transitions. [2022-11-22 00:33:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:33:15,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 366 [2022-11-22 00:33:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:15,955 INFO L225 Difference]: With dead ends: 22519 [2022-11-22 00:33:15,955 INFO L226 Difference]: Without dead ends: 22517 [2022-11-22 00:33:15,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:33:15,972 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 3823 mSDsluCounter, 11785 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3836 SdHoareTripleChecker+Valid, 16045 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:15,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3836 Valid, 16045 Invalid, 2306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2301 Invalid, 3 Unknown, 0 Unchecked, 21.9s Time] [2022-11-22 00:33:15,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22517 states. [2022-11-22 00:33:17,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22517 to 22511. [2022-11-22 00:33:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22511 states, 13616 states have (on average 1.2907608695652173) internal successors, (17575), 13973 states have internal predecessors, (17575), 7058 states have call successors, (7058), 1843 states have call predecessors, (7058), 1834 states have return successors, (7093), 6968 states have call predecessors, (7093), 7046 states have call successors, (7093) [2022-11-22 00:33:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22511 states to 22511 states and 31726 transitions. [2022-11-22 00:33:17,300 INFO L78 Accepts]: Start accepts. Automaton has 22511 states and 31726 transitions. Word has length 366 [2022-11-22 00:33:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:17,301 INFO L495 AbstractCegarLoop]: Abstraction has 22511 states and 31726 transitions. [2022-11-22 00:33:17,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-22 00:33:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 22511 states and 31726 transitions. [2022-11-22 00:33:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-22 00:33:17,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:17,314 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 4, 4, 4, 3, 3, 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 00:33:17,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:33:17,314 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:33:17,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:17,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1636325623, now seen corresponding path program 1 times [2022-11-22 00:33:17,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:17,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314057298] [2022-11-22 00:33:17,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:17,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3537 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3531 trivial. 0 not checked. [2022-11-22 00:33:19,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:19,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314057298] [2022-11-22 00:33:19,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314057298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:19,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:19,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:33:19,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508231873] [2022-11-22 00:33:19,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:19,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:33:19,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:19,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:33:19,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:33:19,558 INFO L87 Difference]: Start difference. First operand 22511 states and 31726 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-22 00:33:21,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:34,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:36,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:33:42,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:42,675 INFO L93 Difference]: Finished difference Result 22523 states and 31734 transitions. [2022-11-22 00:33:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:33:42,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 368 [2022-11-22 00:33:42,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:42,796 INFO L225 Difference]: With dead ends: 22523 [2022-11-22 00:33:42,796 INFO L226 Difference]: Without dead ends: 22521 [2022-11-22 00:33:42,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:33:42,815 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 3824 mSDsluCounter, 11785 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3836 SdHoareTripleChecker+Valid, 16045 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:42,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3836 Valid, 16045 Invalid, 2306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2301 Invalid, 3 Unknown, 0 Unchecked, 22.1s Time] [2022-11-22 00:33:42,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22521 states. [2022-11-22 00:33:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22521 to 22515. [2022-11-22 00:33:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22515 states, 13619 states have (on average 1.2906968206182539) internal successors, (17578), 13976 states have internal predecessors, (17578), 7058 states have call successors, (7058), 1844 states have call predecessors, (7058), 1835 states have return successors, (7093), 6968 states have call predecessors, (7093), 7046 states have call successors, (7093) [2022-11-22 00:33:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22515 states to 22515 states and 31729 transitions. [2022-11-22 00:33:44,007 INFO L78 Accepts]: Start accepts. Automaton has 22515 states and 31729 transitions. Word has length 368 [2022-11-22 00:33:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:44,008 INFO L495 AbstractCegarLoop]: Abstraction has 22515 states and 31729 transitions. [2022-11-22 00:33:44,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2022-11-22 00:33:44,009 INFO L276 IsEmpty]: Start isEmpty. Operand 22515 states and 31729 transitions. [2022-11-22 00:33:44,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-11-22 00:33:44,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:44,026 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:33:44,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:33:44,026 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 00:33:44,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:44,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1257786020, now seen corresponding path program 1 times [2022-11-22 00:33:44,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:44,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676118462] [2022-11-22 00:33:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:44,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3513 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3510 trivial. 0 not checked. [2022-11-22 00:33:45,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:45,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676118462] [2022-11-22 00:33:45,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676118462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:45,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:45,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:33:45,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870462519] [2022-11-22 00:33:45,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:45,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:33:45,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:45,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:33:45,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:45,723 INFO L87 Difference]: Start difference. First operand 22515 states and 31729 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-22 00:33:47,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:00,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:02,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:05,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:05,217 INFO L93 Difference]: Finished difference Result 52263 states and 73755 transitions. [2022-11-22 00:34:05,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:34:05,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 369 [2022-11-22 00:34:05,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:05,462 INFO L225 Difference]: With dead ends: 52263 [2022-11-22 00:34:05,462 INFO L226 Difference]: Without dead ends: 30350 [2022-11-22 00:34:05,547 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 00:34:05,547 INFO L413 NwaCegarLoop]: 5721 mSDtfsCounter, 2837 mSDsluCounter, 3325 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 9046 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:05,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 9046 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1634 Invalid, 3 Unknown, 0 Unchecked, 18.3s Time] [2022-11-22 00:34:05,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30350 states. [2022-11-22 00:34:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30350 to 30249. [2022-11-22 00:34:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30249 states, 18391 states have (on average 1.292751889511174) internal successors, (23775), 18859 states have internal predecessors, (23775), 9411 states have call successors, (9411), 2459 states have call predecessors, (9411), 2444 states have return successors, (9451), 9284 states have call predecessors, (9451), 9399 states have call successors, (9451) [2022-11-22 00:34:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30249 states to 30249 states and 42637 transitions. [2022-11-22 00:34:07,296 INFO L78 Accepts]: Start accepts. Automaton has 30249 states and 42637 transitions. Word has length 369 [2022-11-22 00:34:07,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:07,298 INFO L495 AbstractCegarLoop]: Abstraction has 30249 states and 42637 transitions. [2022-11-22 00:34:07,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-22 00:34:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 30249 states and 42637 transitions. [2022-11-22 00:34:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-11-22 00:34:07,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:07,308 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:34:07,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:34:07,309 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 00:34:07,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:07,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1541926187, now seen corresponding path program 1 times [2022-11-22 00:34:07,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:07,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952343435] [2022-11-22 00:34:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:07,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3559 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3551 trivial. 0 not checked. [2022-11-22 00:34:09,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:09,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952343435] [2022-11-22 00:34:09,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952343435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:09,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:09,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:34:09,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239522074] [2022-11-22 00:34:09,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:09,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:34:09,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:09,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:34:09,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:34:09,977 INFO L87 Difference]: Start difference. First operand 30249 states and 42637 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-22 00:34:12,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:25,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:27,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:33,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:33,699 INFO L93 Difference]: Finished difference Result 30261 states and 42645 transitions. [2022-11-22 00:34:33,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:34:33,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 377 [2022-11-22 00:34:33,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:33,810 INFO L225 Difference]: With dead ends: 30261 [2022-11-22 00:34:33,810 INFO L226 Difference]: Without dead ends: 30259 [2022-11-22 00:34:33,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:34:33,821 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 3823 mSDsluCounter, 11785 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3834 SdHoareTripleChecker+Valid, 16045 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:33,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3834 Valid, 16045 Invalid, 2306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2301 Invalid, 3 Unknown, 0 Unchecked, 22.5s Time] [2022-11-22 00:34:33,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30259 states. [2022-11-22 00:34:35,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30259 to 30253. [2022-11-22 00:34:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30253 states, 18394 states have (on average 1.2927041426552137) internal successors, (23778), 18862 states have internal predecessors, (23778), 9411 states have call successors, (9411), 2460 states have call predecessors, (9411), 2445 states have return successors, (9451), 9284 states have call predecessors, (9451), 9399 states have call successors, (9451) [2022-11-22 00:34:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30253 states to 30253 states and 42640 transitions. [2022-11-22 00:34:35,426 INFO L78 Accepts]: Start accepts. Automaton has 30253 states and 42640 transitions. Word has length 377 [2022-11-22 00:34:35,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:35,428 INFO L495 AbstractCegarLoop]: Abstraction has 30253 states and 42640 transitions. [2022-11-22 00:34:35,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-22 00:34:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 30253 states and 42640 transitions. [2022-11-22 00:34:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-11-22 00:34:35,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:35,441 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:35,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:34:35,442 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 00:34:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1656330938, now seen corresponding path program 1 times [2022-11-22 00:34:35,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:35,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953892470] [2022-11-22 00:34:35,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:35,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3567 trivial. 0 not checked. [2022-11-22 00:34:38,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:38,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953892470] [2022-11-22 00:34:38,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953892470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:38,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:38,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:34:38,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121605481] [2022-11-22 00:34:38,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:38,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:34:38,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:38,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:34:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:34:38,027 INFO L87 Difference]: Start difference. First operand 30253 states and 42640 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-22 00:34:40,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:53,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:55,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:01,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:01,403 INFO L93 Difference]: Finished difference Result 30265 states and 42648 transitions. [2022-11-22 00:35:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:35:01,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 382 [2022-11-22 00:35:01,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:01,502 INFO L225 Difference]: With dead ends: 30265 [2022-11-22 00:35:01,503 INFO L226 Difference]: Without dead ends: 30263 [2022-11-22 00:35:01,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:35:01,516 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 3823 mSDsluCounter, 11785 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3833 SdHoareTripleChecker+Valid, 16045 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:01,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3833 Valid, 16045 Invalid, 2306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2301 Invalid, 3 Unknown, 0 Unchecked, 22.1s Time] [2022-11-22 00:35:01,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30263 states. [2022-11-22 00:35:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30263 to 30257. [2022-11-22 00:35:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30257 states, 18397 states have (on average 1.2926564113714192) internal successors, (23781), 18865 states have internal predecessors, (23781), 9411 states have call successors, (9411), 2461 states have call predecessors, (9411), 2446 states have return successors, (9451), 9284 states have call predecessors, (9451), 9399 states have call successors, (9451) [2022-11-22 00:35:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30257 states to 30257 states and 42643 transitions. [2022-11-22 00:35:02,847 INFO L78 Accepts]: Start accepts. Automaton has 30257 states and 42643 transitions. Word has length 382 [2022-11-22 00:35:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:02,848 INFO L495 AbstractCegarLoop]: Abstraction has 30257 states and 42643 transitions. [2022-11-22 00:35:02,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-22 00:35:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 30257 states and 42643 transitions. [2022-11-22 00:35:02,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-11-22 00:35:02,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:02,859 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:35:02,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:35:02,860 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 00:35:02,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:02,861 INFO L85 PathProgramCache]: Analyzing trace with hash -943916281, now seen corresponding path program 1 times [2022-11-22 00:35:02,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:02,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714427014] [2022-11-22 00:35:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:02,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3598 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3586 trivial. 0 not checked. [2022-11-22 00:35:05,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:05,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714427014] [2022-11-22 00:35:05,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714427014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:05,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:05,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:35:05,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438463269] [2022-11-22 00:35:05,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:05,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:35:05,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:05,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:35:05,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:35:05,322 INFO L87 Difference]: Start difference. First operand 30257 states and 42643 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-22 00:35:07,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:21,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:23,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:29,685 INFO L93 Difference]: Finished difference Result 49367 states and 69694 transitions. [2022-11-22 00:35:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:35:29,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 386 [2022-11-22 00:35:29,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:29,909 INFO L225 Difference]: With dead ends: 49367 [2022-11-22 00:35:29,909 INFO L226 Difference]: Without dead ends: 49365 [2022-11-22 00:35:29,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:35:29,933 INFO L413 NwaCegarLoop]: 4241 mSDtfsCounter, 3817 mSDsluCounter, 11672 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 15913 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:29,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3826 Valid, 15913 Invalid, 2289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2283 Invalid, 3 Unknown, 0 Unchecked, 22.6s Time] [2022-11-22 00:35:29,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49365 states. [2022-11-22 00:35:31,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49365 to 49351. [2022-11-22 00:35:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49351 states, 29995 states have (on average 1.2919819969995) internal successors, (38753), 30735 states have internal predecessors, (38753), 15343 states have call successors, (15343), 4043 states have call predecessors, (15343), 4010 states have return successors, (15583), 15114 states have call predecessors, (15583), 15323 states have call successors, (15583) [2022-11-22 00:35:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49351 states to 49351 states and 69679 transitions. [2022-11-22 00:35:32,070 INFO L78 Accepts]: Start accepts. Automaton has 49351 states and 69679 transitions. Word has length 386 [2022-11-22 00:35:32,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:32,071 INFO L495 AbstractCegarLoop]: Abstraction has 49351 states and 69679 transitions. [2022-11-22 00:35:32,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-22 00:35:32,071 INFO L276 IsEmpty]: Start isEmpty. Operand 49351 states and 69679 transitions. [2022-11-22 00:35:32,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-22 00:35:32,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:32,082 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:35:32,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:35:32,083 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 00:35:32,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1050438071, now seen corresponding path program 1 times [2022-11-22 00:35:32,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:32,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693448019] [2022-11-22 00:35:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:32,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3617 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3603 trivial. 0 not checked. [2022-11-22 00:35:34,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:34,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693448019] [2022-11-22 00:35:34,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693448019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:34,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:34,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:35:34,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24636653] [2022-11-22 00:35:34,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:34,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:35:34,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:35:34,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:35:34,578 INFO L87 Difference]: Start difference. First operand 49351 states and 69679 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-22 00:35:36,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:51,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:53,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:59,645 INFO L93 Difference]: Finished difference Result 49363 states and 69687 transitions. [2022-11-22 00:35:59,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:35:59,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 388 [2022-11-22 00:35:59,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:59,811 INFO L225 Difference]: With dead ends: 49363 [2022-11-22 00:35:59,811 INFO L226 Difference]: Without dead ends: 49361 [2022-11-22 00:35:59,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:35:59,830 INFO L413 NwaCegarLoop]: 4244 mSDtfsCounter, 3824 mSDsluCounter, 11753 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3832 SdHoareTripleChecker+Valid, 15997 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:59,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3832 Valid, 15997 Invalid, 2300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2295 Invalid, 3 Unknown, 0 Unchecked, 23.1s Time] [2022-11-22 00:35:59,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49361 states. [2022-11-22 00:36:01,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49361 to 49355. [2022-11-22 00:36:01,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49355 states, 29998 states have (on average 1.2919527968531235) internal successors, (38756), 30738 states have internal predecessors, (38756), 15343 states have call successors, (15343), 4044 states have call predecessors, (15343), 4011 states have return successors, (15583), 15114 states have call predecessors, (15583), 15323 states have call successors, (15583) [2022-11-22 00:36:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49355 states to 49355 states and 69682 transitions. [2022-11-22 00:36:02,083 INFO L78 Accepts]: Start accepts. Automaton has 49355 states and 69682 transitions. Word has length 388 [2022-11-22 00:36:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:02,084 INFO L495 AbstractCegarLoop]: Abstraction has 49355 states and 69682 transitions. [2022-11-22 00:36:02,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-22 00:36:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 49355 states and 69682 transitions. [2022-11-22 00:36:02,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-11-22 00:36:02,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:02,096 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:36:02,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:36:02,097 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:36:02,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash -928498788, now seen corresponding path program 1 times [2022-11-22 00:36:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:02,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924223838] [2022-11-22 00:36:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:02,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3647 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3631 trivial. 0 not checked. [2022-11-22 00:36:04,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:04,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924223838] [2022-11-22 00:36:04,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924223838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:04,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:36:04,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:36:04,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089537151] [2022-11-22 00:36:04,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:04,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:36:04,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:04,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:36:04,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:36:04,004 INFO L87 Difference]: Start difference. First operand 49355 states and 69682 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-22 00:36:06,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:20,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:22,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:29,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:29,354 INFO L93 Difference]: Finished difference Result 49367 states and 69690 transitions. [2022-11-22 00:36:29,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:36:29,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 393 [2022-11-22 00:36:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:29,519 INFO L225 Difference]: With dead ends: 49367 [2022-11-22 00:36:29,519 INFO L226 Difference]: Without dead ends: 49365 [2022-11-22 00:36:29,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:36:29,538 INFO L413 NwaCegarLoop]: 4244 mSDtfsCounter, 3824 mSDsluCounter, 11753 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3831 SdHoareTripleChecker+Valid, 15997 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:29,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3831 Valid, 15997 Invalid, 2300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2295 Invalid, 3 Unknown, 0 Unchecked, 23.5s Time] [2022-11-22 00:36:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49365 states. [2022-11-22 00:36:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49365 to 49359. [2022-11-22 00:36:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49359 states, 30001 states have (on average 1.2919236025465817) internal successors, (38759), 30741 states have internal predecessors, (38759), 15343 states have call successors, (15343), 4045 states have call predecessors, (15343), 4012 states have return successors, (15583), 15114 states have call predecessors, (15583), 15323 states have call successors, (15583) [2022-11-22 00:36:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49359 states to 49359 states and 69685 transitions. [2022-11-22 00:36:31,919 INFO L78 Accepts]: Start accepts. Automaton has 49359 states and 69685 transitions. Word has length 393 [2022-11-22 00:36:31,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:31,920 INFO L495 AbstractCegarLoop]: Abstraction has 49359 states and 69685 transitions. [2022-11-22 00:36:31,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-22 00:36:31,920 INFO L276 IsEmpty]: Start isEmpty. Operand 49359 states and 69685 transitions. [2022-11-22 00:36:31,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-11-22 00:36:31,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:31,931 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 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, 1, 1, 1, 1, 1, 1, 1, 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 00:36:31,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 00:36:31,932 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 00:36:31,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:31,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2098937026, now seen corresponding path program 1 times [2022-11-22 00:36:31,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:31,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140483365] [2022-11-22 00:36:31,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:31,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3688 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3670 trivial. 0 not checked. [2022-11-22 00:36:33,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:33,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140483365] [2022-11-22 00:36:33,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140483365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:33,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:36:33,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:36:33,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990206787] [2022-11-22 00:36:33,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:33,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:36:33,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:33,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:36:33,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:36:33,750 INFO L87 Difference]: Start difference. First operand 49359 states and 69685 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 00:36:35,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:52,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:54,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:00,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:00,984 INFO L93 Difference]: Finished difference Result 83125 states and 117567 transitions. [2022-11-22 00:37:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:37:00,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 401 [2022-11-22 00:37:00,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:01,392 INFO L225 Difference]: With dead ends: 83125 [2022-11-22 00:37:01,392 INFO L226 Difference]: Without dead ends: 83123 [2022-11-22 00:37:01,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:37:01,429 INFO L413 NwaCegarLoop]: 4126 mSDtfsCounter, 3733 mSDsluCounter, 11031 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3739 SdHoareTripleChecker+Valid, 15157 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:01,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3739 Valid, 15157 Invalid, 2241 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2235 Invalid, 3 Unknown, 0 Unchecked, 24.0s Time] [2022-11-22 00:37:01,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83123 states. [2022-11-22 00:37:05,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83123 to 83101. [2022-11-22 00:37:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83101 states, 50620 states have (on average 1.2951797708415647) internal successors, (65562), 51952 states have internal predecessors, (65562), 25589 states have call successors, (25589), 7062 states have call predecessors, (25589), 6889 states have return successors, (26391), 24936 states have call predecessors, (26391), 25553 states have call successors, (26391) [2022-11-22 00:37:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83101 states to 83101 states and 117542 transitions. [2022-11-22 00:37:06,028 INFO L78 Accepts]: Start accepts. Automaton has 83101 states and 117542 transitions. Word has length 401 [2022-11-22 00:37:06,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:06,029 INFO L495 AbstractCegarLoop]: Abstraction has 83101 states and 117542 transitions. [2022-11-22 00:37:06,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 00:37:06,029 INFO L276 IsEmpty]: Start isEmpty. Operand 83101 states and 117542 transitions. [2022-11-22 00:37:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-22 00:37:06,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:06,040 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 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, 1, 1, 1, 1, 1, 1, 1, 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 00:37:06,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 00:37:06,040 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 00:37:06,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:06,041 INFO L85 PathProgramCache]: Analyzing trace with hash 402583691, now seen corresponding path program 1 times [2022-11-22 00:37:06,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:06,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478826933] [2022-11-22 00:37:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:06,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:37:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3727 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3707 trivial. 0 not checked. [2022-11-22 00:37:08,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:37:08,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478826933] [2022-11-22 00:37:08,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478826933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:37:08,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:37:08,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:37:08,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907408574] [2022-11-22 00:37:08,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:37:08,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:37:08,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:37:08,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:37:08,942 INFO L87 Difference]: Start difference. First operand 83101 states and 117542 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-22 00:37:11,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:26,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:28,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:36,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:36,616 INFO L93 Difference]: Finished difference Result 83113 states and 117550 transitions. [2022-11-22 00:37:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:37:36,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 407 [2022-11-22 00:37:36,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:37,060 INFO L225 Difference]: With dead ends: 83113 [2022-11-22 00:37:37,061 INFO L226 Difference]: Without dead ends: 83111 [2022-11-22 00:37:37,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:37:37,095 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 3823 mSDsluCounter, 11785 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3828 SdHoareTripleChecker+Valid, 16045 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:37,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3828 Valid, 16045 Invalid, 2306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2301 Invalid, 3 Unknown, 0 Unchecked, 24.3s Time] [2022-11-22 00:37:37,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83111 states. [2022-11-22 00:37:41,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83111 to 83105. [2022-11-22 00:37:41,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83105 states, 50623 states have (on average 1.2951622780159215) internal successors, (65565), 51955 states have internal predecessors, (65565), 25589 states have call successors, (25589), 7063 states have call predecessors, (25589), 6890 states have return successors, (26391), 24936 states have call predecessors, (26391), 25553 states have call successors, (26391) [2022-11-22 00:37:42,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83105 states to 83105 states and 117545 transitions. [2022-11-22 00:37:42,150 INFO L78 Accepts]: Start accepts. Automaton has 83105 states and 117545 transitions. Word has length 407 [2022-11-22 00:37:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:42,151 INFO L495 AbstractCegarLoop]: Abstraction has 83105 states and 117545 transitions. [2022-11-22 00:37:42,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-22 00:37:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 83105 states and 117545 transitions. [2022-11-22 00:37:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-11-22 00:37:42,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:42,159 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 12, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:37:42,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 00:37:42,159 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 00:37:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:42,160 INFO L85 PathProgramCache]: Analyzing trace with hash 21898633, now seen corresponding path program 1 times [2022-11-22 00:37:42,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:42,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402031885] [2022-11-22 00:37:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:42,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:37:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3761 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3739 trivial. 0 not checked. [2022-11-22 00:37:44,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:37:44,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402031885] [2022-11-22 00:37:44,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402031885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:37:44,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:37:44,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:37:44,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72788913] [2022-11-22 00:37:44,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:37:44,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:37:44,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:44,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:37:44,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:37:44,420 INFO L87 Difference]: Start difference. First operand 83105 states and 117545 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 00:37:46,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:02,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:04,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:11,739 INFO L93 Difference]: Finished difference Result 83117 states and 117553 transitions. [2022-11-22 00:38:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:38:11,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 408 [2022-11-22 00:38:11,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:12,240 INFO L225 Difference]: With dead ends: 83117 [2022-11-22 00:38:12,240 INFO L226 Difference]: Without dead ends: 83115 [2022-11-22 00:38:12,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:38:12,271 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 3824 mSDsluCounter, 11785 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3828 SdHoareTripleChecker+Valid, 16045 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:12,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3828 Valid, 16045 Invalid, 2306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2301 Invalid, 3 Unknown, 0 Unchecked, 24.0s Time] [2022-11-22 00:38:12,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83115 states. [2022-11-22 00:38:16,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83115 to 83109. [2022-11-22 00:38:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83109 states, 50626 states have (on average 1.2951447872634614) internal successors, (65568), 51958 states have internal predecessors, (65568), 25589 states have call successors, (25589), 7064 states have call predecessors, (25589), 6891 states have return successors, (26391), 24936 states have call predecessors, (26391), 25553 states have call successors, (26391) [2022-11-22 00:38:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83109 states to 83109 states and 117548 transitions. [2022-11-22 00:38:16,997 INFO L78 Accepts]: Start accepts. Automaton has 83109 states and 117548 transitions. Word has length 408 [2022-11-22 00:38:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:16,998 INFO L495 AbstractCegarLoop]: Abstraction has 83109 states and 117548 transitions. [2022-11-22 00:38:16,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 00:38:16,998 INFO L276 IsEmpty]: Start isEmpty. Operand 83109 states and 117548 transitions. [2022-11-22 00:38:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2022-11-22 00:38:17,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:17,013 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 13, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:38:17,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 00:38:17,013 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 00:38:17,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:17,014 INFO L85 PathProgramCache]: Analyzing trace with hash 982279527, now seen corresponding path program 1 times [2022-11-22 00:38:17,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:17,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084186002] [2022-11-22 00:38:17,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:17,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3814 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3790 trivial. 0 not checked. [2022-11-22 00:38:19,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:19,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084186002] [2022-11-22 00:38:19,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084186002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:38:19,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:38:19,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:38:19,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766950564] [2022-11-22 00:38:19,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:38:19,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:38:19,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:38:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:38:19,065 INFO L87 Difference]: Start difference. First operand 83109 states and 117548 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-22 00:38:21,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []