./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-sun-sunhme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW --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 2754d1ad46049a17f9b43992f91364cab029d3fcf93c78791853a365602d9e1a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:11:18,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:11:18,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:11:18,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:11:18,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:11:18,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:11:18,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:11:18,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:11:18,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:11:18,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:11:18,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:11:18,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:11:18,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:11:18,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:11:18,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:11:18,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:11:18,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:11:18,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:11:18,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:11:18,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:11:18,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:11:18,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:11:18,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:11:18,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:11:18,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:11:18,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:11:18,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:11:18,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:11:18,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:11:18,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:11:18,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:11:18,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:11:18,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:11:18,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:11:18,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:11:18,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:11:18,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:11:18,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:11:18,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:11:18,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:11:18,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:11:18,365 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:11:18,398 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:11:18,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:11:18,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:11:18,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:11:18,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:11:18,401 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:11:18,401 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:11:18,402 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:11:18,402 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:11:18,402 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:11:18,403 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:11:18,403 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:11:18,403 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:11:18,404 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:11:18,404 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:11:18,404 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:11:18,404 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:11:18,404 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:11:18,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:11:18,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:11:18,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:11:18,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:11:18,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:11:18,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:11:18,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:11:18,407 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:11:18,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:11:18,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:11:18,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:11:18,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:11:18,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:11:18,409 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:11:18,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:11:18,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:11:18,409 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:11:18,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:11:18,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:11:18,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:11:18,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2754d1ad46049a17f9b43992f91364cab029d3fcf93c78791853a365602d9e1a [2022-11-23 15:11:18,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:11:18,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:11:18,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:11:18,713 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:11:18,713 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:11:18,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2022-11-23 15:11:21,666 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:11:22,411 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:11:22,412 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2022-11-23 15:11:22,469 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/data/ac662a5e1/d268e988b2e8464a9a367ad01619b4a1/FLAG7cf54efba [2022-11-23 15:11:22,494 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/data/ac662a5e1/d268e988b2e8464a9a367ad01619b4a1 [2022-11-23 15:11:22,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:11:22,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:11:22,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:11:22,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:11:22,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:11:22,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:11:22" (1/1) ... [2022-11-23 15:11:22,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d9223d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:22, skipping insertion in model container [2022-11-23 15:11:22,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:11:22" (1/1) ... [2022-11-23 15:11:22,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:11:22,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:11:25,888 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347312,347325] [2022-11-23 15:11:25,892 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347481,347494] [2022-11-23 15:11:25,893 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347648,347661] [2022-11-23 15:11:25,893 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347816,347829] [2022-11-23 15:11:25,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:11:25,956 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:11:26,426 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347312,347325] [2022-11-23 15:11:26,427 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347481,347494] [2022-11-23 15:11:26,427 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347648,347661] [2022-11-23 15:11:26,427 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[347816,347829] [2022-11-23 15:11:26,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:11:26,648 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:11:26,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26 WrapperNode [2022-11-23 15:11:26,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:11:26,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:11:26,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:11:26,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:11:26,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26" (1/1) ... [2022-11-23 15:11:26,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26" (1/1) ... [2022-11-23 15:11:27,035 INFO L138 Inliner]: procedures = 447, calls = 2101, calls flagged for inlining = 218, calls inlined = 201, statements flattened = 4996 [2022-11-23 15:11:27,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:11:27,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:11:27,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:11:27,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:11:27,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26" (1/1) ... [2022-11-23 15:11:27,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26" (1/1) ... [2022-11-23 15:11:27,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26" (1/1) ... [2022-11-23 15:11:27,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26" (1/1) ... [2022-11-23 15:11:27,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26" (1/1) ... [2022-11-23 15:11:27,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26" (1/1) ... [2022-11-23 15:11:27,302 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26" (1/1) ... [2022-11-23 15:11:27,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26" (1/1) ... [2022-11-23 15:11:27,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:11:27,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:11:27,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:11:27,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:11:27,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26" (1/1) ... [2022-11-23 15:11:27,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:11:27,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:11:27,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:11:27,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52fad22e-b6f4-4d6e-8fe0-ed7993f71d02/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:11:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-23 15:11:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure BB_GET_BIT2 [2022-11-23 15:11:27,450 INFO L138 BoogieDeclarations]: Found implementation of procedure BB_GET_BIT2 [2022-11-23 15:11:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-11-23 15:11:27,450 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-11-23 15:11:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 15:11:27,451 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 15:11:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:11:27,451 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:11:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_open [2022-11-23 15:11:27,451 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_open [2022-11-23 15:11:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_poll_stop [2022-11-23 15:11:27,452 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_poll_stop [2022-11-23 15:11:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure is_quattro_p [2022-11-23 15:11:27,452 INFO L138 BoogieDeclarations]: Found implementation of procedure is_quattro_p [2022-11-23 15:11:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 15:11:27,453 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 15:11:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_close [2022-11-23 15:11:27,453 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_close [2022-11-23 15:11:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:11:27,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:11:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 15:11:27,455 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 15:11:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 15:11:27,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 15:11:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_set_multicast [2022-11-23 15:11:27,456 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_set_multicast [2022-11-23 15:11:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 15:11:27,456 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 15:11:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure BB_PUT_BIT [2022-11-23 15:11:27,456 INFO L138 BoogieDeclarations]: Found implementation of procedure BB_PUT_BIT [2022-11-23 15:11:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-23 15:11:27,457 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-23 15:11:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_begin_auto_negotiation [2022-11-23 15:11:27,457 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_begin_auto_negotiation [2022-11-23 15:11:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_get_counters [2022-11-23 15:11:27,457 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_get_counters [2022-11-23 15:11:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_happy_lock_of_happy_meal [2022-11-23 15:11:27,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_happy_lock_of_happy_meal [2022-11-23 15:11:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 15:11:27,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 15:11:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 15:11:27,458 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 15:11:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-23 15:11:27,459 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-23 15:11:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2022-11-23 15:11:27,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2022-11-23 15:11:27,460 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 15:11:27,460 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 15:11:27,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:11:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:11:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:11:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-23 15:11:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-23 15:11:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_happy_lock_of_happy_meal [2022-11-23 15:11:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_happy_lock_of_happy_meal [2022-11-23 15:11:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:11:27,462 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:11:27,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:11:27,462 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 15:11:27,462 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 15:11:27,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:11:27,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 15:11:27,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 15:11:27,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:11:27,463 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 15:11:27,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 15:11:27,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-23 15:11:27,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-23 15:11:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 15:11:27,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 15:11:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 15:11:27,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 15:11:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure set_happy_link_modes [2022-11-23 15:11:27,465 INFO L138 BoogieDeclarations]: Found implementation of procedure set_happy_link_modes [2022-11-23 15:11:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tcvr_reset [2022-11-23 15:11:27,466 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tcvr_reset [2022-11-23 15:11:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 15:11:27,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 15:11:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:11:27,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 15:11:27,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 15:11:27,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 15:11:27,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 15:11:27,467 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tx_timeout [2022-11-23 15:11:27,467 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tx_timeout [2022-11-23 15:11:27,468 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-23 15:11:27,468 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-23 15:11:27,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:11:27,468 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tcvr_read [2022-11-23 15:11:27,468 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tcvr_read [2022-11-23 15:11:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 15:11:27,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 15:11:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 15:11:27,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 15:11:27,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:11:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:11:27,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:11:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:11:27,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:11:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-23 15:11:27,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-23 15:11:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-23 15:11:27,537 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-23 15:11:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 15:11:27,537 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 15:11:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-23 15:11:27,537 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-23 15:11:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 15:11:27,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 15:11:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-23 15:11:27,537 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-23 15:11:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure is_lucent_phy [2022-11-23 15:11:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lucent_phy [2022-11-23 15:11:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:11:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:11:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure hme_read_desc32 [2022-11-23 15:11:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure hme_read_desc32 [2022-11-23 15:11:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-23 15:11:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-23 15:11:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:11:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_clean_rings [2022-11-23 15:11:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_clean_rings [2022-11-23 15:11:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:11:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:11:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:11:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 15:11:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-23 15:11:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 15:11:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 15:11:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-23 15:11:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-23 15:11:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-23 15:11:27,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-23 15:11:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_happy_meal_exit_14_2 [2022-11-23 15:11:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_happy_meal_exit_14_2 [2022-11-23 15:11:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:11:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:11:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:11:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:11:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-23 15:11:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-23 15:11:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-23 15:11:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-23 15:11:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-23 15:11:27,540 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-23 15:11:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:11:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:11:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-23 15:11:27,541 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-23 15:11:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:11:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-23 15:11:27,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-23 15:11:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_stop [2022-11-23 15:11:27,541 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_stop [2022-11-23 15:11:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:11:27,541 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:11:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 15:11:27,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 15:11:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-23 15:11:27,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-23 15:11:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_pci_remove [2022-11-23 15:11:27,542 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_pci_remove [2022-11-23 15:11:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_63 [2022-11-23 15:11:27,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_63 [2022-11-23 15:11:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_init [2022-11-23 15:11:27,542 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_init [2022-11-23 15:11:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-23 15:11:27,542 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-23 15:11:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 15:11:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 15:11:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tcvr_write [2022-11-23 15:11:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tcvr_write [2022-11-23 15:11:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:11:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:11:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:11:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-23 15:11:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-23 15:11:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_64 [2022-11-23 15:11:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_64 [2022-11-23 15:11:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 15:11:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 15:11:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-23 15:11:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-23 15:11:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2022-11-23 15:11:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2022-11-23 15:11:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 15:11:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 15:11:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:11:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-23 15:11:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-23 15:11:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 15:11:27,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 15:11:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-23 15:11:27,545 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-23 15:11:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_transceiver_check [2022-11-23 15:11:27,545 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_transceiver_check [2022-11-23 15:11:28,583 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:11:28,586 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:11:29,114 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:11:34,520 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 15:11:34,767 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:11:36,582 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:11:36,583 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:11:36,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:11:36 BoogieIcfgContainer [2022-11-23 15:11:36,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:11:36,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:11:36,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:11:36,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:11:36,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:11:22" (1/3) ... [2022-11-23 15:11:36,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f43305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:11:36, skipping insertion in model container [2022-11-23 15:11:36,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:11:26" (2/3) ... [2022-11-23 15:11:36,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f43305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:11:36, skipping insertion in model container [2022-11-23 15:11:36,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:11:36" (3/3) ... [2022-11-23 15:11:36,596 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2022-11-23 15:11:36,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:11:36,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 15:11:36,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:11:36,724 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46a48134, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:11:36,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 15:11:36,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 1543 states, 889 states have (on average 1.3093363329583803) internal successors, (1164), 929 states have internal predecessors, (1164), 562 states have call successors, (562), 90 states have call predecessors, (562), 89 states have return successors, (556), 542 states have call predecessors, (556), 556 states have call successors, (556) [2022-11-23 15:11:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 15:11:36,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:11:36,756 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:11:36,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:11:36,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:11:36,762 INFO L85 PathProgramCache]: Analyzing trace with hash -917442303, now seen corresponding path program 1 times [2022-11-23 15:11:36,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:11:36,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726513181] [2022-11-23 15:11:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:11:36,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:11:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:11:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-23 15:11:37,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:11:37,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726513181] [2022-11-23 15:11:37,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726513181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:11:37,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:11:37,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:11:37,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893772006] [2022-11-23 15:11:37,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:11:37,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:11:37,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:11:37,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:11:37,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:11:37,524 INFO L87 Difference]: Start difference. First operand has 1543 states, 889 states have (on average 1.3093363329583803) internal successors, (1164), 929 states have internal predecessors, (1164), 562 states have call successors, (562), 90 states have call predecessors, (562), 89 states have return successors, (556), 542 states have call predecessors, (556), 556 states have call successors, (556) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:11:40,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:11:42,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:11:42,216 INFO L93 Difference]: Finished difference Result 4517 states and 6788 transitions. [2022-11-23 15:11:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:11:42,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2022-11-23 15:11:42,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:11:42,257 INFO L225 Difference]: With dead ends: 4517 [2022-11-23 15:11:42,257 INFO L226 Difference]: Without dead ends: 2981 [2022-11-23 15:11:42,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:11:42,276 INFO L413 NwaCegarLoop]: 2540 mSDtfsCounter, 2163 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:11:42,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2163 Valid, 4523 Invalid, 534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 15:11:42,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-11-23 15:11:42,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2977. [2022-11-23 15:11:42,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 1729 states have (on average 1.302486986697513) internal successors, (2252), 1808 states have internal predecessors, (2252), 1071 states have call successors, (1071), 175 states have call predecessors, (1071), 174 states have return successors, (1067), 1039 states have call predecessors, (1067), 1067 states have call successors, (1067) [2022-11-23 15:11:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 4390 transitions. [2022-11-23 15:11:42,739 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 4390 transitions. Word has length 101 [2022-11-23 15:11:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:11:42,742 INFO L495 AbstractCegarLoop]: Abstraction has 2977 states and 4390 transitions. [2022-11-23 15:11:42,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:11:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 4390 transitions. [2022-11-23 15:11:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 15:11:42,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:11:42,756 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:11:42,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:11:42,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:11:42,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:11:42,758 INFO L85 PathProgramCache]: Analyzing trace with hash 985651937, now seen corresponding path program 1 times [2022-11-23 15:11:42,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:11:42,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228300382] [2022-11-23 15:11:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:11:42,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:11:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:11:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-23 15:11:43,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:11:43,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228300382] [2022-11-23 15:11:43,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228300382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:11:43,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:11:43,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:11:43,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686007246] [2022-11-23 15:11:43,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:11:43,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:11:43,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:11:43,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:11:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:11:43,254 INFO L87 Difference]: Start difference. First operand 2977 states and 4390 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:11:46,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:11:46,959 INFO L93 Difference]: Finished difference Result 8205 states and 12062 transitions. [2022-11-23 15:11:46,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:11:46,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2022-11-23 15:11:46,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:11:47,009 INFO L225 Difference]: With dead ends: 8205 [2022-11-23 15:11:47,010 INFO L226 Difference]: Without dead ends: 5245 [2022-11-23 15:11:47,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:11:47,036 INFO L413 NwaCegarLoop]: 2543 mSDtfsCounter, 2068 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:11:47,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2068 Valid, 4191 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 15:11:47,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5245 states. [2022-11-23 15:11:47,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5245 to 5213. [2022-11-23 15:11:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 3053 states have (on average 1.3075663282017687) internal successors, (3992), 3199 states have internal predecessors, (3992), 1828 states have call successors, (1828), 340 states have call predecessors, (1828), 329 states have return successors, (1834), 1749 states have call predecessors, (1834), 1824 states have call successors, (1834) [2022-11-23 15:11:47,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 7654 transitions. [2022-11-23 15:11:47,594 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 7654 transitions. Word has length 103 [2022-11-23 15:11:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:11:47,597 INFO L495 AbstractCegarLoop]: Abstraction has 5213 states and 7654 transitions. [2022-11-23 15:11:47,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:11:47,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 7654 transitions. [2022-11-23 15:11:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 15:11:47,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:11:47,603 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:11:47,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:11:47,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:11:47,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:11:47,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1024668852, now seen corresponding path program 1 times [2022-11-23 15:11:47,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:11:47,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400493936] [2022-11-23 15:11:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:11:47,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:11:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:11:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-23 15:11:47,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:11:47,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400493936] [2022-11-23 15:11:47,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400493936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:11:47,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:11:47,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:11:47,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70784535] [2022-11-23 15:11:47,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:11:47,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:11:47,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:11:47,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:11:47,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:11:47,907 INFO L87 Difference]: Start difference. First operand 5213 states and 7654 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:11:50,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:11:52,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:11:52,359 INFO L93 Difference]: Finished difference Result 14495 states and 21190 transitions. [2022-11-23 15:11:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:11:52,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2022-11-23 15:11:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:11:52,429 INFO L225 Difference]: With dead ends: 14495 [2022-11-23 15:11:52,430 INFO L226 Difference]: Without dead ends: 9299 [2022-11-23 15:11:52,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:11:52,473 INFO L413 NwaCegarLoop]: 2604 mSDtfsCounter, 1880 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 4553 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:11:52,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1880 Valid, 4553 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 541 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-23 15:11:52,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9299 states. [2022-11-23 15:11:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9299 to 9271. [2022-11-23 15:11:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9271 states, 5455 states have (on average 1.3033913840513291) internal successors, (7110), 5703 states have internal predecessors, (7110), 3188 states have call successors, (3188), 648 states have call predecessors, (3188), 625 states have return successors, (3206), 3047 states have call predecessors, (3206), 3184 states have call successors, (3206) [2022-11-23 15:11:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9271 states to 9271 states and 13504 transitions. [2022-11-23 15:11:53,256 INFO L78 Accepts]: Start accepts. Automaton has 9271 states and 13504 transitions. Word has length 105 [2022-11-23 15:11:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:11:53,257 INFO L495 AbstractCegarLoop]: Abstraction has 9271 states and 13504 transitions. [2022-11-23 15:11:53,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:11:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 9271 states and 13504 transitions. [2022-11-23 15:11:53,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 15:11:53,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:11:53,268 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:11:53,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:11:53,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:11:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:11:53,270 INFO L85 PathProgramCache]: Analyzing trace with hash -387112907, now seen corresponding path program 1 times [2022-11-23 15:11:53,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:11:53,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855033269] [2022-11-23 15:11:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:11:53,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:11:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:11:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-23 15:11:53,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:11:53,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855033269] [2022-11-23 15:11:53,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855033269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:11:53,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:11:53,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:11:53,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340693487] [2022-11-23 15:11:53,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:11:53,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:11:53,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:11:53,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:11:53,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:11:53,953 INFO L87 Difference]: Start difference. First operand 9271 states and 13504 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:12:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:02,377 INFO L93 Difference]: Finished difference Result 22005 states and 31946 transitions. [2022-11-23 15:12:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:12:02,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2022-11-23 15:12:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:02,487 INFO L225 Difference]: With dead ends: 22005 [2022-11-23 15:12:02,488 INFO L226 Difference]: Without dead ends: 12751 [2022-11-23 15:12:02,546 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:12:02,550 INFO L413 NwaCegarLoop]: 3227 mSDtfsCounter, 4871 mSDsluCounter, 4473 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5014 SdHoareTripleChecker+Valid, 7700 SdHoareTripleChecker+Invalid, 3746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:02,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5014 Valid, 7700 Invalid, 3746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [790 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-23 15:12:02,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12751 states. [2022-11-23 15:12:03,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12751 to 12679. [2022-11-23 15:12:03,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12679 states, 7358 states have (on average 1.2832291383528132) internal successors, (9442), 7706 states have internal predecessors, (9442), 4415 states have call successors, (4415), 940 states have call predecessors, (4415), 903 states have return successors, (4422), 4216 states have call predecessors, (4422), 4411 states have call successors, (4422) [2022-11-23 15:12:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12679 states to 12679 states and 18279 transitions. [2022-11-23 15:12:03,764 INFO L78 Accepts]: Start accepts. Automaton has 12679 states and 18279 transitions. Word has length 110 [2022-11-23 15:12:03,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:03,766 INFO L495 AbstractCegarLoop]: Abstraction has 12679 states and 18279 transitions. [2022-11-23 15:12:03,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 15:12:03,766 INFO L276 IsEmpty]: Start isEmpty. Operand 12679 states and 18279 transitions. [2022-11-23 15:12:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-23 15:12:03,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:03,769 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:03,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:12:03,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:12:03,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2107298017, now seen corresponding path program 1 times [2022-11-23 15:12:03,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:03,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288418454] [2022-11-23 15:12:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:03,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-23 15:12:04,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:04,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288418454] [2022-11-23 15:12:04,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288418454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:04,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:04,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:12:04,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523155323] [2022-11-23 15:12:04,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:04,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:12:04,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:12:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:12:04,063 INFO L87 Difference]: Start difference. First operand 12679 states and 18279 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 15:12:07,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:12:09,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:09,089 INFO L93 Difference]: Finished difference Result 34177 states and 49330 transitions. [2022-11-23 15:12:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:12:09,090 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 111 [2022-11-23 15:12:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:09,222 INFO L225 Difference]: With dead ends: 34177 [2022-11-23 15:12:09,222 INFO L226 Difference]: Without dead ends: 21515 [2022-11-23 15:12:09,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:12:09,292 INFO L413 NwaCegarLoop]: 2698 mSDtfsCounter, 1967 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 4692 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:09,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 4692 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 572 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 15:12:09,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21515 states. [2022-11-23 15:12:10,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21515 to 21453. [2022-11-23 15:12:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21453 states, 12399 states have (on average 1.2838132107428017) internal successors, (15918), 13014 states have internal predecessors, (15918), 7486 states have call successors, (7486), 1636 states have call predecessors, (7486), 1565 states have return successors, (7559), 7108 states have call predecessors, (7559), 7482 states have call successors, (7559) [2022-11-23 15:12:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21453 states to 21453 states and 30963 transitions. [2022-11-23 15:12:10,916 INFO L78 Accepts]: Start accepts. Automaton has 21453 states and 30963 transitions. Word has length 111 [2022-11-23 15:12:10,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:10,918 INFO L495 AbstractCegarLoop]: Abstraction has 21453 states and 30963 transitions. [2022-11-23 15:12:10,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 15:12:10,918 INFO L276 IsEmpty]: Start isEmpty. Operand 21453 states and 30963 transitions. [2022-11-23 15:12:10,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-23 15:12:10,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:10,920 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 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] [2022-11-23 15:12:10,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:12:10,921 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:12:10,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:10,921 INFO L85 PathProgramCache]: Analyzing trace with hash -967487828, now seen corresponding path program 1 times [2022-11-23 15:12:10,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:10,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985165453] [2022-11-23 15:12:10,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:10,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:11,151 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-23 15:12:11,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:11,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985165453] [2022-11-23 15:12:11,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985165453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:11,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:11,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:12:11,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551346857] [2022-11-23 15:12:11,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:11,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:12:11,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:11,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:12:11,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:12:11,153 INFO L87 Difference]: Start difference. First operand 21453 states and 30963 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 15:12:14,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:12:16,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:16,989 INFO L93 Difference]: Finished difference Result 62288 states and 89888 transitions. [2022-11-23 15:12:16,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:12:16,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2022-11-23 15:12:16,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:17,299 INFO L225 Difference]: With dead ends: 62288 [2022-11-23 15:12:17,299 INFO L226 Difference]: Without dead ends: 40852 [2022-11-23 15:12:17,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:12:17,609 INFO L413 NwaCegarLoop]: 2919 mSDtfsCounter, 2117 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 4918 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:17,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2117 Valid, 4918 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 573 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 15:12:17,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40852 states. [2022-11-23 15:12:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40852 to 40778. [2022-11-23 15:12:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40778 states, 23580 states have (on average 1.2837150127226462) internal successors, (30270), 24777 states have internal predecessors, (30270), 14200 states have call successors, (14200), 3136 states have call predecessors, (14200), 2995 states have return successors, (14347), 13436 states have call predecessors, (14347), 14196 states have call successors, (14347) [2022-11-23 15:12:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40778 states to 40778 states and 58817 transitions. [2022-11-23 15:12:20,016 INFO L78 Accepts]: Start accepts. Automaton has 40778 states and 58817 transitions. Word has length 121 [2022-11-23 15:12:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:20,017 INFO L495 AbstractCegarLoop]: Abstraction has 40778 states and 58817 transitions. [2022-11-23 15:12:20,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 15:12:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 40778 states and 58817 transitions. [2022-11-23 15:12:20,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 15:12:20,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:20,023 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 8, 8, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:20,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:12:20,024 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:12:20,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:20,025 INFO L85 PathProgramCache]: Analyzing trace with hash 405585073, now seen corresponding path program 1 times [2022-11-23 15:12:20,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:20,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815573255] [2022-11-23 15:12:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:20,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-23 15:12:20,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:20,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815573255] [2022-11-23 15:12:20,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815573255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:20,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:20,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:12:20,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865942588] [2022-11-23 15:12:20,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:20,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:12:20,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:20,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:12:20,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:12:20,566 INFO L87 Difference]: Start difference. First operand 40778 states and 58817 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:12:24,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:12:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:26,891 INFO L93 Difference]: Finished difference Result 81493 states and 117557 transitions. [2022-11-23 15:12:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:12:26,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 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 134 [2022-11-23 15:12:26,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:27,150 INFO L225 Difference]: With dead ends: 81493 [2022-11-23 15:12:27,150 INFO L226 Difference]: Without dead ends: 40778 [2022-11-23 15:12:27,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:12:27,401 INFO L413 NwaCegarLoop]: 2000 mSDtfsCounter, 7 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3990 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:27,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3990 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 507 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 15:12:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40778 states. [2022-11-23 15:12:29,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40778 to 40778. [2022-11-23 15:12:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40778 states, 23580 states have (on average 1.2816793893129772) internal successors, (30222), 24777 states have internal predecessors, (30222), 14200 states have call successors, (14200), 3136 states have call predecessors, (14200), 2995 states have return successors, (14347), 13436 states have call predecessors, (14347), 14196 states have call successors, (14347) [2022-11-23 15:12:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40778 states to 40778 states and 58769 transitions. [2022-11-23 15:12:29,959 INFO L78 Accepts]: Start accepts. Automaton has 40778 states and 58769 transitions. Word has length 134 [2022-11-23 15:12:29,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:29,960 INFO L495 AbstractCegarLoop]: Abstraction has 40778 states and 58769 transitions. [2022-11-23 15:12:29,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 15:12:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 40778 states and 58769 transitions. [2022-11-23 15:12:29,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-23 15:12:29,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:29,964 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:29,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:12:29,964 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:12:29,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:29,965 INFO L85 PathProgramCache]: Analyzing trace with hash 475699511, now seen corresponding path program 1 times [2022-11-23 15:12:29,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:29,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580795968] [2022-11-23 15:12:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:29,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-23 15:12:30,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:30,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580795968] [2022-11-23 15:12:30,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580795968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:30,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:30,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:12:30,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565499776] [2022-11-23 15:12:30,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:30,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:12:30,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:30,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:12:30,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:12:30,914 INFO L87 Difference]: Start difference. First operand 40778 states and 58769 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:12:34,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:12:36,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:12:37,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:12:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:39,632 INFO L93 Difference]: Finished difference Result 40784 states and 58774 transitions. [2022-11-23 15:12:39,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:12:39,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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 145 [2022-11-23 15:12:39,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:39,883 INFO L225 Difference]: With dead ends: 40784 [2022-11-23 15:12:39,884 INFO L226 Difference]: Without dead ends: 40782 [2022-11-23 15:12:40,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:12:40,100 INFO L413 NwaCegarLoop]: 1997 mSDtfsCounter, 2207 mSDsluCounter, 3980 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 5977 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:40,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2219 Valid, 5977 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 784 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-23 15:12:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40782 states. [2022-11-23 15:12:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40782 to 40782. [2022-11-23 15:12:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40782 states, 23583 states have (on average 1.2816435567993893) internal successors, (30225), 24780 states have internal predecessors, (30225), 14200 states have call successors, (14200), 3137 states have call predecessors, (14200), 2996 states have return successors, (14347), 13436 states have call predecessors, (14347), 14196 states have call successors, (14347) [2022-11-23 15:12:42,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40782 states to 40782 states and 58772 transitions. [2022-11-23 15:12:42,517 INFO L78 Accepts]: Start accepts. Automaton has 40782 states and 58772 transitions. Word has length 145 [2022-11-23 15:12:42,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:42,518 INFO L495 AbstractCegarLoop]: Abstraction has 40782 states and 58772 transitions. [2022-11-23 15:12:42,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:12:42,518 INFO L276 IsEmpty]: Start isEmpty. Operand 40782 states and 58772 transitions. [2022-11-23 15:12:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-23 15:12:42,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:42,521 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:42,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:12:42,522 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:12:42,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:42,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1597895412, now seen corresponding path program 1 times [2022-11-23 15:12:42,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:42,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620222183] [2022-11-23 15:12:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:42,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2022-11-23 15:12:42,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:42,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620222183] [2022-11-23 15:12:42,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620222183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:42,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:42,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:12:42,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123002090] [2022-11-23 15:12:42,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:42,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:12:42,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:42,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:12:42,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:12:42,991 INFO L87 Difference]: Start difference. First operand 40782 states and 58772 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 15:12:46,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:12:48,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:12:51,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:12:51,050 INFO L93 Difference]: Finished difference Result 40788 states and 58777 transitions. [2022-11-23 15:12:51,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:12:51,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2022-11-23 15:12:51,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:12:51,250 INFO L225 Difference]: With dead ends: 40788 [2022-11-23 15:12:51,251 INFO L226 Difference]: Without dead ends: 40786 [2022-11-23 15:12:51,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:12:51,280 INFO L413 NwaCegarLoop]: 2000 mSDtfsCounter, 2201 mSDsluCounter, 3980 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 5980 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:12:51,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 5980 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 15:12:51,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40786 states. [2022-11-23 15:12:53,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40786 to 40786. [2022-11-23 15:12:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40786 states, 23586 states have (on average 1.2816077334011702) internal successors, (30228), 24783 states have internal predecessors, (30228), 14200 states have call successors, (14200), 3138 states have call predecessors, (14200), 2997 states have return successors, (14347), 13436 states have call predecessors, (14347), 14196 states have call successors, (14347) [2022-11-23 15:12:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40786 states to 40786 states and 58775 transitions. [2022-11-23 15:12:53,866 INFO L78 Accepts]: Start accepts. Automaton has 40786 states and 58775 transitions. Word has length 154 [2022-11-23 15:12:53,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:12:53,867 INFO L495 AbstractCegarLoop]: Abstraction has 40786 states and 58775 transitions. [2022-11-23 15:12:53,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 15:12:53,867 INFO L276 IsEmpty]: Start isEmpty. Operand 40786 states and 58775 transitions. [2022-11-23 15:12:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-23 15:12:53,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:12:53,871 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:12:53,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:12:53,872 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:12:53,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:12:53,872 INFO L85 PathProgramCache]: Analyzing trace with hash -731062633, now seen corresponding path program 1 times [2022-11-23 15:12:53,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:12:53,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064988581] [2022-11-23 15:12:53,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:12:53,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:12:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:12:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-11-23 15:12:54,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:12:54,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064988581] [2022-11-23 15:12:54,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064988581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:12:54,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:12:54,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:12:54,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521030026] [2022-11-23 15:12:54,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:12:54,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:12:54,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:12:54,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:12:54,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:12:54,628 INFO L87 Difference]: Start difference. First operand 40786 states and 58775 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 15:12:58,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:13:02,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:13:02,561 INFO L93 Difference]: Finished difference Result 58688 states and 84322 transitions. [2022-11-23 15:13:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:13:02,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 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 155 [2022-11-23 15:13:02,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:13:02,882 INFO L225 Difference]: With dead ends: 58688 [2022-11-23 15:13:02,882 INFO L226 Difference]: Without dead ends: 58686 [2022-11-23 15:13:02,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:13:02,926 INFO L413 NwaCegarLoop]: 2503 mSDtfsCounter, 1859 mSDsluCounter, 6963 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 9466 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:13:02,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1869 Valid, 9466 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1050 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-23 15:13:02,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58686 states. [2022-11-23 15:13:06,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58686 to 58680. [2022-11-23 15:13:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58680 states, 33934 states have (on average 1.2791890139682913) internal successors, (43408), 35671 states have internal predecessors, (43408), 20348 states have call successors, (20348), 4597 states have call predecessors, (20348), 4395 states have return successors, (20561), 19237 states have call predecessors, (20561), 20340 states have call successors, (20561) [2022-11-23 15:13:06,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58680 states to 58680 states and 84317 transitions. [2022-11-23 15:13:06,620 INFO L78 Accepts]: Start accepts. Automaton has 58680 states and 84317 transitions. Word has length 155 [2022-11-23 15:13:06,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:13:06,620 INFO L495 AbstractCegarLoop]: Abstraction has 58680 states and 84317 transitions. [2022-11-23 15:13:06,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 15:13:06,621 INFO L276 IsEmpty]: Start isEmpty. Operand 58680 states and 84317 transitions. [2022-11-23 15:13:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-23 15:13:06,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:13:06,645 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:13:06,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:13:06,645 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 15:13:06,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:13:06,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1295015926, now seen corresponding path program 1 times [2022-11-23 15:13:06,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:13:06,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279247199] [2022-11-23 15:13:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:13:06,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:13:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:13:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-23 15:13:06,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:13:06,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279247199] [2022-11-23 15:13:06,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279247199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:06,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:13:06,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:13:06,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857084094] [2022-11-23 15:13:06,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:06,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:13:06,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:06,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:13:06,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:13:06,962 INFO L87 Difference]: Start difference. First operand 58680 states and 84317 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-23 15:13:11,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []