./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:18:25,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:18:25,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:18:25,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:18:25,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:18:25,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:18:25,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:18:25,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:18:25,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:18:25,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:18:25,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:18:25,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:18:25,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:18:25,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:18:25,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:18:25,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:18:25,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:18:25,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:18:25,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:18:25,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:18:25,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:18:25,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:18:25,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:18:25,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:18:25,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:18:25,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:18:25,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:18:25,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:18:25,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:18:25,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:18:25,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:18:25,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:18:25,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:18:25,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:18:25,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:18:25,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:18:25,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:18:25,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:18:25,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:18:25,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:18:25,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:18:25,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:18:25,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:18:25,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:18:25,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:18:25,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:18:25,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:18:25,485 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:18:25,485 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:18:25,485 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:18:25,486 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:18:25,486 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:18:25,487 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:18:25,487 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:18:25,487 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:18:25,487 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:18:25,488 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:18:25,488 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:18:25,488 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:18:25,488 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:18:25,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:18:25,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:18:25,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:18:25,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:18:25,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:18:25,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:18:25,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:18:25,491 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:18:25,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:18:25,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:18:25,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:18:25,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:18:25,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:18:25,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:18:25,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:18:25,494 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:18:25,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:18:25,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:18:25,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:18:25,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:18:25,495 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 [2021-11-25 20:18:25,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:18:25,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:18:25,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:18:25,757 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:18:25,758 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:18:25,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2021-11-25 20:18:25,840 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/data/175261615/6440470337db45be85d35a48d73acd68/FLAG67e113cf4 [2021-11-25 20:18:26,812 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:18:26,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2021-11-25 20:18:26,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/data/175261615/6440470337db45be85d35a48d73acd68/FLAG67e113cf4 [2021-11-25 20:18:27,233 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/data/175261615/6440470337db45be85d35a48d73acd68 [2021-11-25 20:18:27,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:18:27,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:18:27,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:18:27,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:18:27,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:18:27,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:18:27" (1/1) ... [2021-11-25 20:18:27,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33504bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:27, skipping insertion in model container [2021-11-25 20:18:27,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:18:27" (1/1) ... [2021-11-25 20:18:27,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:18:27,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:18:30,285 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2021-11-25 20:18:30,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2021-11-25 20:18:30,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2021-11-25 20:18:30,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2021-11-25 20:18:30,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:18:30,384 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:18:30,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2021-11-25 20:18:30,777 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2021-11-25 20:18:30,777 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2021-11-25 20:18:30,777 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2021-11-25 20:18:30,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:18:30,993 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:18:30,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:30 WrapperNode [2021-11-25 20:18:30,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:18:30,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:18:30,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:18:30,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:18:31,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:30" (1/1) ... [2021-11-25 20:18:31,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:30" (1/1) ... [2021-11-25 20:18:31,353 INFO L137 Inliner]: procedures = 459, calls = 1763, calls flagged for inlining = 217, calls inlined = 199, statements flattened = 4288 [2021-11-25 20:18:31,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:18:31,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:18:31,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:18:31,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:18:31,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:30" (1/1) ... [2021-11-25 20:18:31,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:30" (1/1) ... [2021-11-25 20:18:31,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:30" (1/1) ... [2021-11-25 20:18:31,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:30" (1/1) ... [2021-11-25 20:18:31,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:30" (1/1) ... [2021-11-25 20:18:31,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:30" (1/1) ... [2021-11-25 20:18:31,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:30" (1/1) ... [2021-11-25 20:18:31,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:18:31,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:18:31,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:18:31,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:18:31,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:30" (1/1) ... [2021-11-25 20:18:31,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:18:31,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:18:31,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:18:31,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b396e111-7955-41ac-bfcf-23ddf36f6b2b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:18:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_set_multicast [2021-11-25 20:18:31,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_set_multicast [2021-11-25 20:18:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:18:31,794 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:18:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_rx_kick [2021-11-25 20:18:31,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_rx_kick [2021-11-25 20:18:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 20:18:31,795 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 20:18:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_do_reset [2021-11-25 20:18:31,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_do_reset [2021-11-25 20:18:31,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2021-11-25 20:18:31,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2021-11-25 20:18:31,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:18:31,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:18:31,796 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 20:18:31,797 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 20:18:31,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:18:31,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:18:31,797 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:18:31,797 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:18:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_62 [2021-11-25 20:18:31,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_62 [2021-11-25 20:18:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_73 [2021-11-25 20:18:31,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_73 [2021-11-25 20:18:31,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2021-11-25 20:18:31,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2021-11-25 20:18:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_remove_one [2021-11-25 20:18:31,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_remove_one [2021-11-25 20:18:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 20:18:31,799 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 20:18:31,799 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_update_stats [2021-11-25 20:18:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_update_stats [2021-11-25 20:18:31,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:18:31,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:18:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 20:18:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 20:18:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 20:18:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 20:18:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 20:18:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 20:18:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:18:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:18:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 20:18:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 20:18:31,804 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 20:18:31,804 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 20:18:31,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:18:31,805 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 20:18:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 20:18:31,805 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:18:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:18:31,805 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 20:18:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 20:18:31,806 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_tx_timeout [2021-11-25 20:18:31,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_tx_timeout [2021-11-25 20:18:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:18:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:18:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 20:18:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 20:18:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:18:31,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:18:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:18:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:18:31,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:18:31,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 20:18:31,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 20:18:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:18:31,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:18:31,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:18:31,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:18:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-25 20:18:31,811 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-25 20:18:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 20:18:31,811 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 20:18:31,811 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 20:18:31,812 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 20:18:31,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 20:18:31,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 20:18:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_run_bist [2021-11-25 20:18:31,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_run_bist [2021-11-25 20:18:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:18:31,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 20:18:31,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 20:18:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 20:18:31,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 20:18:31,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 20:18:31,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 20:18:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:18:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:18:31,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:18:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:18:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure clear_rx_desc [2021-11-25 20:18:31,817 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_rx_desc [2021-11-25 20:18:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure phy_intr [2021-11-25 20:18:31,817 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_intr [2021-11-25 20:18:31,817 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:18:31,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:18:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-25 20:18:31,818 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-25 20:18:31,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:18:31,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:18:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 20:18:31,819 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 20:18:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 20:18:31,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 20:18:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-25 20:18:31,819 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-25 20:18:31,819 INFO L130 BoogieDeclarations]: Found specification of procedure do_tx_done [2021-11-25 20:18:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure do_tx_done [2021-11-25 20:18:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_misc_lock_of_ns83820 [2021-11-25 20:18:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_misc_lock_of_ns83820 [2021-11-25 20:18:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:18:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:18:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 20:18:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 20:18:31,820 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-25 20:18:31,821 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-25 20:18:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 20:18:31,821 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 20:18:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:18:31,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:18:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_stop [2021-11-25 20:18:31,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_stop [2021-11-25 20:18:31,821 INFO L130 BoogieDeclarations]: Found specification of procedure kick_tx [2021-11-25 20:18:31,822 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_tx [2021-11-25 20:18:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rx_info [2021-11-25 20:18:31,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rx_info [2021-11-25 20:18:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:18:31,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:18:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 20:18:31,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 20:18:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:18:31,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:18:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-25 20:18:31,823 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-25 20:18:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 20:18:31,823 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 20:18:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 20:18:31,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 20:18:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 20:18:31,824 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 20:18:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-25 20:18:31,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-25 20:18:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-25 20:18:31,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-25 20:18:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:18:31,824 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:18:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 20:18:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 20:18:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 20:18:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 20:18:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-25 20:18:31,825 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-25 20:18:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2021-11-25 20:18:31,826 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2021-11-25 20:18:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 20:18:31,826 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 20:18:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:18:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_72 [2021-11-25 20:18:31,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_72 [2021-11-25 20:18:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:18:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:18:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:18:31,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:18:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-25 20:18:31,827 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-25 20:18:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-25 20:18:31,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-25 20:18:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:18:31,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:18:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 20:18:31,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 20:18:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-25 20:18:31,828 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-25 20:18:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 20:18:31,828 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 20:18:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 20:18:31,829 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 20:18:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_ns83820 [2021-11-25 20:18:31,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_ns83820 [2021-11-25 20:18:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2021-11-25 20:18:31,829 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2021-11-25 20:18:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure build_rx_desc [2021-11-25 20:18:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure build_rx_desc [2021-11-25 20:18:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:18:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-25 20:18:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-25 20:18:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:18:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:18:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 20:18:31,831 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 20:18:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_misc_lock_of_ns83820 [2021-11-25 20:18:31,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_misc_lock_of_ns83820 [2021-11-25 20:18:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-25 20:18:31,890 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-25 20:18:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_open [2021-11-25 20:18:31,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_open [2021-11-25 20:18:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:18:31,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:18:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 20:18:31,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 20:18:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure rx_irq [2021-11-25 20:18:31,891 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_irq [2021-11-25 20:18:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_disable_interrupts [2021-11-25 20:18:31,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_disable_interrupts [2021-11-25 20:18:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure kick_rx [2021-11-25 20:18:31,891 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_rx [2021-11-25 20:18:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 20:18:31,891 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 20:18:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 20:18:31,892 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 20:18:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:18:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure rx_refill [2021-11-25 20:18:31,892 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_refill [2021-11-25 20:18:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:18:31,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:18:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rx_info [2021-11-25 20:18:31,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rx_info [2021-11-25 20:18:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_ns83820 [2021-11-25 20:18:31,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_ns83820 [2021-11-25 20:18:32,690 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:18:32,696 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:18:32,882 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:18:35,446 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 20:18:35,558 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:18:36,664 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:18:36,665 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:18:36,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:18:36 BoogieIcfgContainer [2021-11-25 20:18:36,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:18:36,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:18:36,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:18:36,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:18:36,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:18:27" (1/3) ... [2021-11-25 20:18:36,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2487dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:18:36, skipping insertion in model container [2021-11-25 20:18:36,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:18:30" (2/3) ... [2021-11-25 20:18:36,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2487dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:18:36, skipping insertion in model container [2021-11-25 20:18:36,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:18:36" (3/3) ... [2021-11-25 20:18:36,684 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2021-11-25 20:18:36,690 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:18:36,691 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 20:18:36,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:18:36,760 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:18:36,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 20:18:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 1364 states, 750 states have (on average 1.2333333333333334) internal successors, (925), 782 states have internal predecessors, (925), 508 states have call successors, (508), 104 states have call predecessors, (508), 103 states have return successors, (503), 499 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-25 20:18:36,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-25 20:18:36,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:18:36,854 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:18:36,855 INFO L402 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)] === [2021-11-25 20:18:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:18:36,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1792268557, now seen corresponding path program 1 times [2021-11-25 20:18:36,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:18:36,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575925794] [2021-11-25 20:18:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:18:36,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:18:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:18:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-25 20:18:37,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:18:37,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575925794] [2021-11-25 20:18:37,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575925794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:18:37,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:18:37,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:18:37,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982832230] [2021-11-25 20:18:37,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:18:37,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:18:37,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:18:37,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:18:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:18:37,530 INFO L87 Difference]: Start difference. First operand has 1364 states, 750 states have (on average 1.2333333333333334) internal successors, (925), 782 states have internal predecessors, (925), 508 states have call successors, (508), 104 states have call predecessors, (508), 103 states have return successors, (503), 499 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:18:40,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:18:40,865 INFO L93 Difference]: Finished difference Result 4001 states and 5836 transitions. [2021-11-25 20:18:40,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:18:40,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2021-11-25 20:18:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:18:40,908 INFO L225 Difference]: With dead ends: 4001 [2021-11-25 20:18:40,908 INFO L226 Difference]: Without dead ends: 2642 [2021-11-25 20:18:40,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:18:40,930 INFO L933 BasicCegarLoop]: 2163 mSDtfsCounter, 1848 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 3821 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:18:40,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1848 Valid, 3821 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-25 20:18:40,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-11-25 20:18:41,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2638. [2021-11-25 20:18:41,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 1460 states have (on average 1.2267123287671233) internal successors, (1791), 1522 states have internal predecessors, (1791), 972 states have call successors, (972), 204 states have call predecessors, (972), 203 states have return successors, (969), 961 states have call predecessors, (969), 969 states have call successors, (969) [2021-11-25 20:18:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3732 transitions. [2021-11-25 20:18:41,296 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3732 transitions. Word has length 87 [2021-11-25 20:18:41,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:18:41,297 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 3732 transitions. [2021-11-25 20:18:41,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:18:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3732 transitions. [2021-11-25 20:18:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 20:18:41,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:18:41,307 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:18:41,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:18:41,307 INFO L402 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)] === [2021-11-25 20:18:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:18:41,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1633463498, now seen corresponding path program 1 times [2021-11-25 20:18:41,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:18:41,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670619654] [2021-11-25 20:18:41,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:18:41,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:18:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:18:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-25 20:18:41,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:18:41,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670619654] [2021-11-25 20:18:41,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670619654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:18:41,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:18:41,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:18:41,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541597509] [2021-11-25 20:18:41,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:18:41,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:18:41,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:18:41,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:18:41,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:18:41,512 INFO L87 Difference]: Start difference. First operand 2638 states and 3732 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:18:42,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:18:45,654 INFO L93 Difference]: Finished difference Result 7466 states and 10514 transitions. [2021-11-25 20:18:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:18:45,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2021-11-25 20:18:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:18:45,698 INFO L225 Difference]: With dead ends: 7466 [2021-11-25 20:18:45,698 INFO L226 Difference]: Without dead ends: 4843 [2021-11-25 20:18:45,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:18:45,715 INFO L933 BasicCegarLoop]: 2091 mSDtfsCounter, 1579 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 3712 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:18:45,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1579 Valid, 3712 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 20:18:45,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4843 states. [2021-11-25 20:18:46,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4843 to 4812. [2021-11-25 20:18:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4812 states, 2655 states have (on average 1.215819209039548) internal successors, (3228), 2771 states have internal predecessors, (3228), 1761 states have call successors, (1761), 394 states have call predecessors, (1761), 393 states have return successors, (1764), 1740 states have call predecessors, (1764), 1758 states have call successors, (1764) [2021-11-25 20:18:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4812 states to 4812 states and 6753 transitions. [2021-11-25 20:18:46,141 INFO L78 Accepts]: Start accepts. Automaton has 4812 states and 6753 transitions. Word has length 98 [2021-11-25 20:18:46,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:18:46,144 INFO L470 AbstractCegarLoop]: Abstraction has 4812 states and 6753 transitions. [2021-11-25 20:18:46,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:18:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 4812 states and 6753 transitions. [2021-11-25 20:18:46,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-25 20:18:46,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:18:46,150 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:18:46,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:18:46,151 INFO L402 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)] === [2021-11-25 20:18:46,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:18:46,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1628614378, now seen corresponding path program 1 times [2021-11-25 20:18:46,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:18:46,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298824589] [2021-11-25 20:18:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:18:46,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:18:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:18:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-25 20:18:46,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:18:46,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298824589] [2021-11-25 20:18:46,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298824589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:18:46,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:18:46,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:18:46,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929089060] [2021-11-25 20:18:46,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:18:46,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:18:46,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:18:46,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:18:46,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:18:46,370 INFO L87 Difference]: Start difference. First operand 4812 states and 6753 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:18:55,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:18:55,803 INFO L93 Difference]: Finished difference Result 11219 states and 15669 transitions. [2021-11-25 20:18:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:18:55,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2021-11-25 20:18:55,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:18:55,860 INFO L225 Difference]: With dead ends: 11219 [2021-11-25 20:18:55,861 INFO L226 Difference]: Without dead ends: 6422 [2021-11-25 20:18:55,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:18:55,886 INFO L933 BasicCegarLoop]: 2780 mSDtfsCounter, 5178 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 2216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5314 SdHoareTripleChecker+Valid, 5239 SdHoareTripleChecker+Invalid, 4588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2216 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:18:55,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5314 Valid, 5239 Invalid, 4588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2216 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2021-11-25 20:18:55,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6422 states. [2021-11-25 20:18:56,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6422 to 6362. [2021-11-25 20:18:56,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6362 states, 3509 states have (on average 1.208036477628954) internal successors, (4239), 3677 states have internal predecessors, (4239), 2285 states have call successors, (2285), 566 states have call predecessors, (2285), 565 states have return successors, (2285), 2255 states have call predecessors, (2285), 2282 states have call successors, (2285) [2021-11-25 20:18:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 8809 transitions. [2021-11-25 20:18:56,383 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 8809 transitions. Word has length 99 [2021-11-25 20:18:56,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:18:56,386 INFO L470 AbstractCegarLoop]: Abstraction has 6362 states and 8809 transitions. [2021-11-25 20:18:56,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-25 20:18:56,387 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 8809 transitions. [2021-11-25 20:18:56,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-25 20:18:56,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:18:56,395 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:18:56,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:18:56,396 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:18:56,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:18:56,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1057129919, now seen corresponding path program 1 times [2021-11-25 20:18:56,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:18:56,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863659365] [2021-11-25 20:18:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:18:56,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:18:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:18:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-25 20:18:56,599 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:18:56,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863659365] [2021-11-25 20:18:56,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863659365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:18:56,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:18:56,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:18:56,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474909392] [2021-11-25 20:18:56,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:18:56,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:18:56,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:18:56,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:18:56,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:18:56,602 INFO L87 Difference]: Start difference. First operand 6362 states and 8809 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:18:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:18:59,516 INFO L93 Difference]: Finished difference Result 17574 states and 24334 transitions. [2021-11-25 20:18:59,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:18:59,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2021-11-25 20:18:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:18:59,600 INFO L225 Difference]: With dead ends: 17574 [2021-11-25 20:18:59,600 INFO L226 Difference]: Without dead ends: 11227 [2021-11-25 20:18:59,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:18:59,630 INFO L933 BasicCegarLoop]: 2131 mSDtfsCounter, 1794 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 3714 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:18:59,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1794 Valid, 3714 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 20:18:59,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11227 states. [2021-11-25 20:19:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11227 to 11191. [2021-11-25 20:19:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11191 states, 6174 states have (on average 1.210236475542598) internal successors, (7472), 6484 states have internal predecessors, (7472), 3997 states have call successors, (3997), 1023 states have call predecessors, (3997), 1017 states have return successors, (4025), 3921 states have call predecessors, (4025), 3994 states have call successors, (4025) [2021-11-25 20:19:00,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11191 states to 11191 states and 15494 transitions. [2021-11-25 20:19:00,343 INFO L78 Accepts]: Start accepts. Automaton has 11191 states and 15494 transitions. Word has length 102 [2021-11-25 20:19:00,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:00,345 INFO L470 AbstractCegarLoop]: Abstraction has 11191 states and 15494 transitions. [2021-11-25 20:19:00,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:19:00,345 INFO L276 IsEmpty]: Start isEmpty. Operand 11191 states and 15494 transitions. [2021-11-25 20:19:00,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-25 20:19:00,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:00,347 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:00,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:19:00,347 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:19:00,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:00,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1110193653, now seen corresponding path program 1 times [2021-11-25 20:19:00,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:00,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127496834] [2021-11-25 20:19:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:00,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-25 20:19:00,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:00,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127496834] [2021-11-25 20:19:00,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127496834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:00,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:00,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:19:00,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164238037] [2021-11-25 20:19:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:00,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:19:00,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:00,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:19:00,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:00,532 INFO L87 Difference]: Start difference. First operand 11191 states and 15494 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-25 20:19:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:02,594 INFO L93 Difference]: Finished difference Result 30726 states and 42389 transitions. [2021-11-25 20:19:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:19:02,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2021-11-25 20:19:02,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:02,708 INFO L225 Difference]: With dead ends: 30726 [2021-11-25 20:19:02,708 INFO L226 Difference]: Without dead ends: 19550 [2021-11-25 20:19:02,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:02,757 INFO L933 BasicCegarLoop]: 2408 mSDtfsCounter, 1759 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 4049 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:02,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1759 Valid, 4049 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-25 20:19:02,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19550 states. [2021-11-25 20:19:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19550 to 19514. [2021-11-25 20:19:03,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19514 states, 10852 states have (on average 1.2084408403980833) internal successors, (13114), 11356 states have internal predecessors, (13114), 6828 states have call successors, (6828), 1847 states have call predecessors, (6828), 1831 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2021-11-25 20:19:04,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19514 states to 19514 states and 26832 transitions. [2021-11-25 20:19:04,136 INFO L78 Accepts]: Start accepts. Automaton has 19514 states and 26832 transitions. Word has length 103 [2021-11-25 20:19:04,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:04,136 INFO L470 AbstractCegarLoop]: Abstraction has 19514 states and 26832 transitions. [2021-11-25 20:19:04,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-25 20:19:04,137 INFO L276 IsEmpty]: Start isEmpty. Operand 19514 states and 26832 transitions. [2021-11-25 20:19:04,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-25 20:19:04,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:04,139 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:04,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:19:04,139 INFO L402 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)] === [2021-11-25 20:19:04,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:04,140 INFO L85 PathProgramCache]: Analyzing trace with hash -80829940, now seen corresponding path program 1 times [2021-11-25 20:19:04,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:04,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759071660] [2021-11-25 20:19:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:04,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-11-25 20:19:04,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:04,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759071660] [2021-11-25 20:19:04,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759071660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:04,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:04,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:19:04,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243281089] [2021-11-25 20:19:04,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:04,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:19:04,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:04,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:19:04,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:04,329 INFO L87 Difference]: Start difference. First operand 19514 states and 26832 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:19:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:06,479 INFO L93 Difference]: Finished difference Result 19520 states and 26837 transitions. [2021-11-25 20:19:06,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:19:06,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 125 [2021-11-25 20:19:06,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:06,698 INFO L225 Difference]: With dead ends: 19520 [2021-11-25 20:19:06,699 INFO L226 Difference]: Without dead ends: 19518 [2021-11-25 20:19:06,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:19:06,708 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1873 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 4980 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:06,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1886 Valid, 4980 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-25 20:19:06,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19518 states. [2021-11-25 20:19:07,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19518 to 19518. [2021-11-25 20:19:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19518 states, 10855 states have (on average 1.208383233532934) internal successors, (13117), 11359 states have internal predecessors, (13117), 6828 states have call successors, (6828), 1848 states have call predecessors, (6828), 1832 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2021-11-25 20:19:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19518 states to 19518 states and 26835 transitions. [2021-11-25 20:19:07,769 INFO L78 Accepts]: Start accepts. Automaton has 19518 states and 26835 transitions. Word has length 125 [2021-11-25 20:19:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:07,771 INFO L470 AbstractCegarLoop]: Abstraction has 19518 states and 26835 transitions. [2021-11-25 20:19:07,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 20:19:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 19518 states and 26835 transitions. [2021-11-25 20:19:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-25 20:19:07,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:07,774 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:07,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:19:07,775 INFO L402 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)] === [2021-11-25 20:19:07,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash 11585739, now seen corresponding path program 1 times [2021-11-25 20:19:07,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:07,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022091663] [2021-11-25 20:19:07,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:07,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-11-25 20:19:07,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:07,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022091663] [2021-11-25 20:19:07,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022091663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:07,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:07,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:19:07,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887714307] [2021-11-25 20:19:07,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:07,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:19:07,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:07,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:19:07,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:07,964 INFO L87 Difference]: Start difference. First operand 19518 states and 26835 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-25 20:19:12,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:12,530 INFO L93 Difference]: Finished difference Result 19524 states and 26840 transitions. [2021-11-25 20:19:12,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:19:12,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2021-11-25 20:19:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:12,612 INFO L225 Difference]: With dead ends: 19524 [2021-11-25 20:19:12,612 INFO L226 Difference]: Without dead ends: 19522 [2021-11-25 20:19:12,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:19:12,622 INFO L933 BasicCegarLoop]: 1668 mSDtfsCounter, 1868 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:12,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1880 Valid, 4983 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 20:19:12,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19522 states. [2021-11-25 20:19:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19522 to 19522. [2021-11-25 20:19:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19522 states, 10858 states have (on average 1.2083256585006448) internal successors, (13120), 11362 states have internal predecessors, (13120), 6828 states have call successors, (6828), 1849 states have call predecessors, (6828), 1833 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2021-11-25 20:19:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19522 states to 19522 states and 26838 transitions. [2021-11-25 20:19:13,837 INFO L78 Accepts]: Start accepts. Automaton has 19522 states and 26838 transitions. Word has length 130 [2021-11-25 20:19:13,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:13,838 INFO L470 AbstractCegarLoop]: Abstraction has 19522 states and 26838 transitions. [2021-11-25 20:19:13,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-25 20:19:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 19522 states and 26838 transitions. [2021-11-25 20:19:13,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-25 20:19:13,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:13,841 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:13,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:19:13,842 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:19:13,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:13,843 INFO L85 PathProgramCache]: Analyzing trace with hash 983636268, now seen corresponding path program 1 times [2021-11-25 20:19:13,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:13,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715902940] [2021-11-25 20:19:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:13,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-25 20:19:14,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:14,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715902940] [2021-11-25 20:19:14,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715902940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:14,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:14,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:19:14,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804609992] [2021-11-25 20:19:14,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:14,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:19:14,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:19:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:14,002 INFO L87 Difference]: Start difference. First operand 19522 states and 26838 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 20:19:17,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:17,793 INFO L93 Difference]: Finished difference Result 19528 states and 26843 transitions. [2021-11-25 20:19:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:19:17,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 135 [2021-11-25 20:19:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:17,892 INFO L225 Difference]: With dead ends: 19528 [2021-11-25 20:19:17,892 INFO L226 Difference]: Without dead ends: 19526 [2021-11-25 20:19:18,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:19:18,019 INFO L933 BasicCegarLoop]: 1668 mSDtfsCounter, 1868 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:18,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1879 Valid, 4983 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 20:19:18,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19526 states. [2021-11-25 20:19:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19526 to 19526. [2021-11-25 20:19:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19526 states, 10861 states have (on average 1.2082681152748365) internal successors, (13123), 11365 states have internal predecessors, (13123), 6828 states have call successors, (6828), 1850 states have call predecessors, (6828), 1834 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2021-11-25 20:19:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19526 states to 19526 states and 26841 transitions. [2021-11-25 20:19:19,128 INFO L78 Accepts]: Start accepts. Automaton has 19526 states and 26841 transitions. Word has length 135 [2021-11-25 20:19:19,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:19,131 INFO L470 AbstractCegarLoop]: Abstraction has 19526 states and 26841 transitions. [2021-11-25 20:19:19,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 20:19:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 19526 states and 26841 transitions. [2021-11-25 20:19:19,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-25 20:19:19,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:19,135 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:19,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:19:19,136 INFO L402 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)] === [2021-11-25 20:19:19,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash -536480469, now seen corresponding path program 1 times [2021-11-25 20:19:19,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:19,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089319685] [2021-11-25 20:19:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:19,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:19,487 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-11-25 20:19:19,487 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:19,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089319685] [2021-11-25 20:19:19,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089319685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:19,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:19,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:19:19,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987271333] [2021-11-25 20:19:19,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:19,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:19:19,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:19,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:19:19,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:19,492 INFO L87 Difference]: Start difference. First operand 19526 states and 26841 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 20:19:23,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:23,887 INFO L93 Difference]: Finished difference Result 19532 states and 26846 transitions. [2021-11-25 20:19:23,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:19:23,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 140 [2021-11-25 20:19:23,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:23,976 INFO L225 Difference]: With dead ends: 19532 [2021-11-25 20:19:23,976 INFO L226 Difference]: Without dead ends: 19530 [2021-11-25 20:19:23,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:19:23,988 INFO L933 BasicCegarLoop]: 1668 mSDtfsCounter, 1868 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:23,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1878 Valid, 4983 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 20:19:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2021-11-25 20:19:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 19530. [2021-11-25 20:19:25,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19530 states, 10864 states have (on average 1.2082106038291605) internal successors, (13126), 11368 states have internal predecessors, (13126), 6828 states have call successors, (6828), 1851 states have call predecessors, (6828), 1835 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2021-11-25 20:19:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19530 states to 19530 states and 26844 transitions. [2021-11-25 20:19:25,210 INFO L78 Accepts]: Start accepts. Automaton has 19530 states and 26844 transitions. Word has length 140 [2021-11-25 20:19:25,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:25,210 INFO L470 AbstractCegarLoop]: Abstraction has 19530 states and 26844 transitions. [2021-11-25 20:19:25,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 20:19:25,211 INFO L276 IsEmpty]: Start isEmpty. Operand 19530 states and 26844 transitions. [2021-11-25 20:19:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-25 20:19:25,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:25,225 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:25,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:19:25,225 INFO L402 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)] === [2021-11-25 20:19:25,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:25,226 INFO L85 PathProgramCache]: Analyzing trace with hash -588992094, now seen corresponding path program 1 times [2021-11-25 20:19:25,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:25,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800241043] [2021-11-25 20:19:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:25,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-11-25 20:19:25,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:25,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800241043] [2021-11-25 20:19:25,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800241043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:25,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:25,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:19:25,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479664650] [2021-11-25 20:19:25,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:25,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:19:25,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:25,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:19:25,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:25,435 INFO L87 Difference]: Start difference. First operand 19530 states and 26844 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:19:30,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:30,050 INFO L93 Difference]: Finished difference Result 19536 states and 26849 transitions. [2021-11-25 20:19:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:19:30,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 154 [2021-11-25 20:19:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:30,122 INFO L225 Difference]: With dead ends: 19536 [2021-11-25 20:19:30,122 INFO L226 Difference]: Without dead ends: 19534 [2021-11-25 20:19:30,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:19:30,135 INFO L933 BasicCegarLoop]: 1668 mSDtfsCounter, 1864 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:30,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1873 Valid, 4983 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 20:19:30,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19534 states. [2021-11-25 20:19:31,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19534 to 19534. [2021-11-25 20:19:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19534 states, 10867 states have (on average 1.2081531241372965) internal successors, (13129), 11371 states have internal predecessors, (13129), 6828 states have call successors, (6828), 1852 states have call predecessors, (6828), 1836 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2021-11-25 20:19:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19534 states to 19534 states and 26847 transitions. [2021-11-25 20:19:31,150 INFO L78 Accepts]: Start accepts. Automaton has 19534 states and 26847 transitions. Word has length 154 [2021-11-25 20:19:31,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:31,151 INFO L470 AbstractCegarLoop]: Abstraction has 19534 states and 26847 transitions. [2021-11-25 20:19:31,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-25 20:19:31,151 INFO L276 IsEmpty]: Start isEmpty. Operand 19534 states and 26847 transitions. [2021-11-25 20:19:31,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-25 20:19:31,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:31,157 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:31,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:19:31,158 INFO L402 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)] === [2021-11-25 20:19:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:31,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1507288565, now seen corresponding path program 1 times [2021-11-25 20:19:31,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:31,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012894837] [2021-11-25 20:19:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:31,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-11-25 20:19:31,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:31,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012894837] [2021-11-25 20:19:31,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012894837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:31,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:31,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:19:31,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387895212] [2021-11-25 20:19:31,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:31,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:19:31,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:31,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:19:31,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:31,434 INFO L87 Difference]: Start difference. First operand 19534 states and 26847 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:19:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:35,086 INFO L93 Difference]: Finished difference Result 19540 states and 26852 transitions. [2021-11-25 20:19:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:19:35,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 159 [2021-11-25 20:19:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:35,150 INFO L225 Difference]: With dead ends: 19540 [2021-11-25 20:19:35,150 INFO L226 Difference]: Without dead ends: 19538 [2021-11-25 20:19:35,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:19:35,158 INFO L933 BasicCegarLoop]: 1668 mSDtfsCounter, 1864 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:35,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1872 Valid, 4983 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-25 20:19:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19538 states. [2021-11-25 20:19:36,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19538 to 19538. [2021-11-25 20:19:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19538 states, 10870 states have (on average 1.208095676172953) internal successors, (13132), 11374 states have internal predecessors, (13132), 6828 states have call successors, (6828), 1853 states have call predecessors, (6828), 1837 states have return successors, (6890), 6662 states have call predecessors, (6890), 6825 states have call successors, (6890) [2021-11-25 20:19:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19538 states to 19538 states and 26850 transitions. [2021-11-25 20:19:36,167 INFO L78 Accepts]: Start accepts. Automaton has 19538 states and 26850 transitions. Word has length 159 [2021-11-25 20:19:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:36,168 INFO L470 AbstractCegarLoop]: Abstraction has 19538 states and 26850 transitions. [2021-11-25 20:19:36,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:19:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 19538 states and 26850 transitions. [2021-11-25 20:19:36,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-25 20:19:36,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:36,173 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:36,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:19:36,173 INFO L402 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)] === [2021-11-25 20:19:36,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash -634092222, now seen corresponding path program 1 times [2021-11-25 20:19:36,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:36,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050002107] [2021-11-25 20:19:36,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:36,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-11-25 20:19:36,323 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:36,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050002107] [2021-11-25 20:19:36,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050002107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:36,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:36,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:19:36,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722095582] [2021-11-25 20:19:36,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:36,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:19:36,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:36,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:19:36,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:36,326 INFO L87 Difference]: Start difference. First operand 19538 states and 26850 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:19:39,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:39,962 INFO L93 Difference]: Finished difference Result 37559 states and 51871 transitions. [2021-11-25 20:19:39,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:19:39,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 164 [2021-11-25 20:19:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:40,080 INFO L225 Difference]: With dead ends: 37559 [2021-11-25 20:19:40,081 INFO L226 Difference]: Without dead ends: 37557 [2021-11-25 20:19:40,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:19:40,092 INFO L933 BasicCegarLoop]: 2238 mSDtfsCounter, 1786 mSDsluCounter, 6863 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 8327 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:40,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1793 Valid, 8327 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 20:19:40,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37557 states. [2021-11-25 20:19:41,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37557 to 37505. [2021-11-25 20:19:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37505 states, 20912 states have (on average 1.210788064269319) internal successors, (25320), 21959 states have internal predecessors, (25320), 13039 states have call successors, (13039), 3657 states have call predecessors, (13039), 3551 states have return successors, (13461), 12525 states have call predecessors, (13461), 13033 states have call successors, (13461) [2021-11-25 20:19:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37505 states to 37505 states and 51820 transitions. [2021-11-25 20:19:41,710 INFO L78 Accepts]: Start accepts. Automaton has 37505 states and 51820 transitions. Word has length 164 [2021-11-25 20:19:41,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:41,710 INFO L470 AbstractCegarLoop]: Abstraction has 37505 states and 51820 transitions. [2021-11-25 20:19:41,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:19:41,711 INFO L276 IsEmpty]: Start isEmpty. Operand 37505 states and 51820 transitions. [2021-11-25 20:19:41,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-25 20:19:41,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:41,713 INFO L514 BasicCegarLoop]: trace histogram [11, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:41,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:19:41,714 INFO L402 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)] === [2021-11-25 20:19:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:41,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1974797781, now seen corresponding path program 1 times [2021-11-25 20:19:41,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:41,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160005799] [2021-11-25 20:19:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:41,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2021-11-25 20:19:41,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:41,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160005799] [2021-11-25 20:19:41,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160005799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:41,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:41,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:19:41,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339238125] [2021-11-25 20:19:41,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:41,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:19:41,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:41,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:19:41,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:41,881 INFO L87 Difference]: Start difference. First operand 37505 states and 51820 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:19:46,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:46,702 INFO L93 Difference]: Finished difference Result 37515 states and 51829 transitions. [2021-11-25 20:19:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:19:46,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 169 [2021-11-25 20:19:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:46,799 INFO L225 Difference]: With dead ends: 37515 [2021-11-25 20:19:46,799 INFO L226 Difference]: Without dead ends: 37513 [2021-11-25 20:19:46,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:19:46,809 INFO L933 BasicCegarLoop]: 1668 mSDtfsCounter, 1864 mSDsluCounter, 3807 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 4983 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:46,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1870 Valid, 4983 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 20:19:46,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37513 states. [2021-11-25 20:19:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37513 to 37513. [2021-11-25 20:19:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37513 states, 20918 states have (on average 1.2107276030213214) internal successors, (25326), 21965 states have internal predecessors, (25326), 13039 states have call successors, (13039), 3659 states have call predecessors, (13039), 3553 states have return successors, (13461), 12525 states have call predecessors, (13461), 13033 states have call successors, (13461) [2021-11-25 20:19:48,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37513 states to 37513 states and 51826 transitions. [2021-11-25 20:19:48,634 INFO L78 Accepts]: Start accepts. Automaton has 37513 states and 51826 transitions. Word has length 169 [2021-11-25 20:19:48,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:48,634 INFO L470 AbstractCegarLoop]: Abstraction has 37513 states and 51826 transitions. [2021-11-25 20:19:48,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:19:48,635 INFO L276 IsEmpty]: Start isEmpty. Operand 37513 states and 51826 transitions. [2021-11-25 20:19:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-25 20:19:48,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:48,638 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:48,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:19:48,638 INFO L402 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)] === [2021-11-25 20:19:48,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1903821026, now seen corresponding path program 1 times [2021-11-25 20:19:48,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:48,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724390969] [2021-11-25 20:19:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:48,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:48,787 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2021-11-25 20:19:48,787 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:48,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724390969] [2021-11-25 20:19:48,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724390969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:48,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:48,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:19:48,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867254549] [2021-11-25 20:19:48,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:48,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:19:48,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:48,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:19:48,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:19:48,790 INFO L87 Difference]: Start difference. First operand 37513 states and 51826 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 20:19:53,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:53,237 INFO L93 Difference]: Finished difference Result 40608 states and 55443 transitions. [2021-11-25 20:19:53,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:19:53,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 174 [2021-11-25 20:19:53,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:53,336 INFO L225 Difference]: With dead ends: 40608 [2021-11-25 20:19:53,336 INFO L226 Difference]: Without dead ends: 40606 [2021-11-25 20:19:53,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:19:53,350 INFO L933 BasicCegarLoop]: 1710 mSDtfsCounter, 1689 mSDsluCounter, 4238 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 5426 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:53,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1694 Valid, 5426 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-25 20:19:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40606 states. [2021-11-25 20:19:55,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40606 to 40602. [2021-11-25 20:19:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40602 states, 22619 states have (on average 1.205623590786507) internal successors, (27270), 23714 states have internal predecessors, (27270), 13873 states have call successors, (13873), 4213 states have call predecessors, (13873), 4107 states have return successors, (14295), 13359 states have call predecessors, (14295), 13867 states have call successors, (14295) [2021-11-25 20:19:55,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40602 states to 40602 states and 55438 transitions. [2021-11-25 20:19:55,252 INFO L78 Accepts]: Start accepts. Automaton has 40602 states and 55438 transitions. Word has length 174 [2021-11-25 20:19:55,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:55,252 INFO L470 AbstractCegarLoop]: Abstraction has 40602 states and 55438 transitions. [2021-11-25 20:19:55,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-25 20:19:55,253 INFO L276 IsEmpty]: Start isEmpty. Operand 40602 states and 55438 transitions. [2021-11-25 20:19:55,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-25 20:19:55,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:55,255 INFO L514 BasicCegarLoop]: trace histogram [13, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:55,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:19:55,256 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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)] === [2021-11-25 20:19:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:55,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1063882459, now seen corresponding path program 1 times [2021-11-25 20:19:55,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:55,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759083932] [2021-11-25 20:19:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:55,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-25 20:19:55,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:55,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759083932] [2021-11-25 20:19:55,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759083932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:55,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:55,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:19:55,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775682315] [2021-11-25 20:19:55,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:55,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:19:55,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:55,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:19:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:55,575 INFO L87 Difference]: Start difference. First operand 40602 states and 55438 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 20:20:01,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:01,209 INFO L93 Difference]: Finished difference Result 92153 states and 125836 transitions. [2021-11-25 20:20:01,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:20:01,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 165 [2021-11-25 20:20:01,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:01,387 INFO L225 Difference]: With dead ends: 92153 [2021-11-25 20:20:01,388 INFO L226 Difference]: Without dead ends: 51604 [2021-11-25 20:20:01,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:20:01,469 INFO L933 BasicCegarLoop]: 2837 mSDtfsCounter, 1389 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:01,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1389 Valid, 4464 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 20:20:01,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51604 states. [2021-11-25 20:20:04,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51604 to 51474. [2021-11-25 20:20:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51474 states, 28722 states have (on average 1.2039899728431167) internal successors, (34581), 30115 states have internal predecessors, (34581), 17517 states have call successors, (17517), 5364 states have call predecessors, (17517), 5232 states have return successors, (18005), 16873 states have call predecessors, (18005), 17511 states have call successors, (18005) [2021-11-25 20:20:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51474 states to 51474 states and 70103 transitions. [2021-11-25 20:20:04,307 INFO L78 Accepts]: Start accepts. Automaton has 51474 states and 70103 transitions. Word has length 165 [2021-11-25 20:20:04,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:04,307 INFO L470 AbstractCegarLoop]: Abstraction has 51474 states and 70103 transitions. [2021-11-25 20:20:04,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 20:20:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 51474 states and 70103 transitions. [2021-11-25 20:20:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-25 20:20:04,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:04,310 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 9, 9, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:20:04,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:20:04,311 INFO L402 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)] === [2021-11-25 20:20:04,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:04,311 INFO L85 PathProgramCache]: Analyzing trace with hash -226506165, now seen corresponding path program 1 times [2021-11-25 20:20:04,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:04,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213289468] [2021-11-25 20:20:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:04,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-11-25 20:20:04,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:04,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213289468] [2021-11-25 20:20:04,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213289468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:04,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:20:04,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:20:04,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820122438] [2021-11-25 20:20:04,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:04,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:20:04,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:04,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:20:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:20:04,451 INFO L87 Difference]: Start difference. First operand 51474 states and 70103 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25)