./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:35:09,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:35:09,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:35:09,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:35:09,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:35:09,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:35:09,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:35:09,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:35:09,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:35:09,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:35:09,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:35:09,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:35:09,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:35:09,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:35:09,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:35:09,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:35:09,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:35:09,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:35:09,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:35:09,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:35:09,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:35:09,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:35:09,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:35:09,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:35:09,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:35:09,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:35:09,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:35:09,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:35:09,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:35:09,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:35:09,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:35:09,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:35:09,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:35:09,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:35:09,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:35:09,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:35:09,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:35:09,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:35:09,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:35:09,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:35:09,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:35:09,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:35:09,461 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:35:09,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:35:09,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:35:09,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:35:09,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:35:09,463 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:35:09,463 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:35:09,463 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:35:09,464 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:35:09,464 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:35:09,464 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:35:09,464 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:35:09,464 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:35:09,464 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:35:09,465 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:35:09,465 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:35:09,465 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:35:09,465 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:35:09,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:35:09,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:35:09,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:35:09,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:35:09,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:35:09,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:35:09,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:35:09,467 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:35:09,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:35:09,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:35:09,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:35:09,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:35:09,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:35:09,468 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:35:09,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:35:09,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:35:09,469 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:35:09,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:35:09,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:35:09,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:35:09,470 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_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 [2022-11-22 01:35:09,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:35:09,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:35:09,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:35:09,788 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:35:09,788 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:35:09,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-22 01:35:12,918 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:35:13,736 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:35:13,737 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-22 01:35:13,799 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/data/0521cbbde/5d09c0cd04ac4cf5abbc50bdaac7ff84/FLAGea171d4b7 [2022-11-22 01:35:13,820 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/data/0521cbbde/5d09c0cd04ac4cf5abbc50bdaac7ff84 [2022-11-22 01:35:13,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:35:13,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:35:13,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:35:13,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:35:13,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:35:13,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:35:13" (1/1) ... [2022-11-22 01:35:13,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77da27ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:13, skipping insertion in model container [2022-11-22 01:35:13,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:35:13" (1/1) ... [2022-11-22 01:35:13,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:35:14,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:35:18,536 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_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2022-11-22 01:35:18,544 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_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2022-11-22 01:35:18,544 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_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2022-11-22 01:35:18,545 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_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2022-11-22 01:35:18,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:35:18,672 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:35:19,199 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_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2022-11-22 01:35:19,199 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_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2022-11-22 01:35:19,200 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_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2022-11-22 01:35:19,200 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_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2022-11-22 01:35:19,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:35:19,487 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:35:19,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19 WrapperNode [2022-11-22 01:35:19,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:35:19,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:35:19,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:35:19,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:35:19,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19" (1/1) ... [2022-11-22 01:35:19,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19" (1/1) ... [2022-11-22 01:35:20,112 INFO L138 Inliner]: procedures = 567, calls = 5350, calls flagged for inlining = 289, calls inlined = 261, statements flattened = 11739 [2022-11-22 01:35:20,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:35:20,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:35:20,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:35:20,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:35:20,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19" (1/1) ... [2022-11-22 01:35:20,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19" (1/1) ... [2022-11-22 01:35:20,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19" (1/1) ... [2022-11-22 01:35:20,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19" (1/1) ... [2022-11-22 01:35:20,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19" (1/1) ... [2022-11-22 01:35:20,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19" (1/1) ... [2022-11-22 01:35:20,694 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19" (1/1) ... [2022-11-22 01:35:20,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19" (1/1) ... [2022-11-22 01:35:20,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:35:20,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:35:20,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:35:20,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:35:20,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19" (1/1) ... [2022-11-22 01:35:20,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:35:20,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:35:20,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:35:20,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ca8d40-a831-4e66-804b-5e34b6aa83a4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:35:20,855 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2022-11-22 01:35:20,856 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2022-11-22 01:35:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2022-11-22 01:35:20,856 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2022-11-22 01:35:20,856 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 01:35:20,857 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 01:35:20,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:35:20,857 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:35:20,857 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 01:35:20,857 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 01:35:20,857 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 01:35:20,858 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 01:35:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2022-11-22 01:35:20,858 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2022-11-22 01:35:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2022-11-22 01:35:20,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2022-11-22 01:35:20,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:35:20,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:35:20,859 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 01:35:20,860 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 01:35:20,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:35:20,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:35:20,861 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 01:35:20,861 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 01:35:20,861 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-22 01:35:20,862 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-22 01:35:20,862 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 01:35:20,862 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 01:35:20,862 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-22 01:35:20,862 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-22 01:35:20,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-22 01:35:20,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-22 01:35:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-22 01:35:20,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-22 01:35:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 01:35:20,863 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 01:35:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-22 01:35:20,864 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-22 01:35:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 01:35:20,864 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 01:35:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 01:35:20,865 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 01:35:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:35:20,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:35:20,866 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2022-11-22 01:35:20,866 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2022-11-22 01:35:20,866 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 01:35:20,866 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 01:35:20,866 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 01:35:20,867 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 01:35:20,867 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 01:35:20,867 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 01:35:20,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:35:20,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:35:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 01:35:20,868 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 01:35:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 01:35:20,868 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 01:35:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:35:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2022-11-22 01:35:20,869 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2022-11-22 01:35:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_61 [2022-11-22 01:35:20,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_61 [2022-11-22 01:35:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2022-11-22 01:35:20,870 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2022-11-22 01:35:20,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-22 01:35:20,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-22 01:35:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2022-11-22 01:35:20,871 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2022-11-22 01:35:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:35:20,871 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:35:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2022-11-22 01:35:20,872 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2022-11-22 01:35:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2022-11-22 01:35:20,873 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2022-11-22 01:35:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2022-11-22 01:35:20,873 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2022-11-22 01:35:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:35:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___5 [2022-11-22 01:35:20,874 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___5 [2022-11-22 01:35:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2022-11-22 01:35:20,874 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2022-11-22 01:35:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 01:35:20,875 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 01:35:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 01:35:20,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 01:35:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:35:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:35:20,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:35:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:35:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-22 01:35:20,877 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-22 01:35:20,877 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 01:35:20,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 01:35:20,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 01:35:20,878 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 01:35:20,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 01:35:20,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 01:35:20,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:35:20,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:35:20,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 01:35:20,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 01:35:20,879 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2022-11-22 01:35:20,879 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2022-11-22 01:35:20,880 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 01:35:20,884 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 01:35:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 01:35:20,885 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 01:35:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2022-11-22 01:35:20,885 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2022-11-22 01:35:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2022-11-22 01:35:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2022-11-22 01:35:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:35:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:35:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:35:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:35:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:35:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:35:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:35:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 01:35:20,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 01:35:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 01:35:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 01:35:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:35:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:35:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:35:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 01:35:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 01:35:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:35:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2022-11-22 01:35:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2022-11-22 01:35:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-22 01:35:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-22 01:35:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-22 01:35:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-22 01:35:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:35:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:35:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tulip_private [2022-11-22 01:35:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tulip_private [2022-11-22 01:35:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 01:35:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 01:35:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 01:35:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 01:35:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:35:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:35:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 01:35:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 01:35:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mii_lock_of_tulip_private [2022-11-22 01:35:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mii_lock_of_tulip_private [2022-11-22 01:35:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 01:35:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 01:35:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tulip_private [2022-11-22 01:35:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tulip_private [2022-11-22 01:35:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:35:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:35:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2022-11-22 01:35:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2022-11-22 01:35:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:35:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:35:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:35:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:35:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-22 01:35:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-22 01:35:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:35:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:35:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-22 01:35:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-22 01:35:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2022-11-22 01:35:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2022-11-22 01:35:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 01:35:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 01:35:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2022-11-22 01:35:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2022-11-22 01:35:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2022-11-22 01:35:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2022-11-22 01:35:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 01:35:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 01:35:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2022-11-22 01:35:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2022-11-22 01:35:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2022-11-22 01:35:20,905 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2022-11-22 01:35:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 01:35:20,905 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 01:35:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2022-11-22 01:35:20,905 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2022-11-22 01:35:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2022-11-22 01:35:20,906 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2022-11-22 01:35:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 01:35:20,906 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 01:35:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 01:35:20,906 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 01:35:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2022-11-22 01:35:20,906 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2022-11-22 01:35:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-22 01:35:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-22 01:35:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 01:35:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 01:35:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:35:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2022-11-22 01:35:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2022-11-22 01:35:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 01:35:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 01:35:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:35:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-22 01:35:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-22 01:35:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-22 01:35:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-22 01:35:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2022-11-22 01:35:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2022-11-22 01:35:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:35:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2022-11-22 01:35:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2022-11-22 01:35:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2022-11-22 01:35:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2022-11-22 01:35:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2022-11-22 01:35:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2022-11-22 01:35:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 01:35:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 01:35:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-22 01:35:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-22 01:35:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2022-11-22 01:35:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2022-11-22 01:35:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:35:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:35:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 01:35:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 01:35:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2022-11-22 01:35:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2022-11-22 01:35:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-22 01:35:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-22 01:35:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2022-11-22 01:35:20,913 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2022-11-22 01:35:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2022-11-22 01:35:20,917 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2022-11-22 01:35:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 01:35:20,917 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 01:35:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 01:35:20,917 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 01:35:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-22 01:35:20,917 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-22 01:35:20,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_62 [2022-11-22 01:35:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_62 [2022-11-22 01:35:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 01:35:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 01:35:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:35:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:35:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:35:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2022-11-22 01:35:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2022-11-22 01:35:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:35:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:35:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61___0 [2022-11-22 01:35:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61___0 [2022-11-22 01:35:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2022-11-22 01:35:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2022-11-22 01:35:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2022-11-22 01:35:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2022-11-22 01:35:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 01:35:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 01:35:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2022-11-22 01:35:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2022-11-22 01:35:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-22 01:35:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-22 01:35:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:35:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:35:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-22 01:35:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-22 01:35:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-22 01:35:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-22 01:35:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 01:35:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 01:35:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2022-11-22 01:35:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2022-11-22 01:35:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-22 01:35:20,924 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-22 01:35:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2022-11-22 01:35:20,924 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2022-11-22 01:35:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:35:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2022-11-22 01:35:20,924 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2022-11-22 01:35:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:35:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:35:22,275 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:35:22,287 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:35:23,694 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:35:33,738 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:35:33,963 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:35:39,193 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:35:39,194 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-22 01:35:39,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:35:39 BoogieIcfgContainer [2022-11-22 01:35:39,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:35:39,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:35:39,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:35:39,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:35:39,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:35:13" (1/3) ... [2022-11-22 01:35:39,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a38ddda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:35:39, skipping insertion in model container [2022-11-22 01:35:39,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:35:19" (2/3) ... [2022-11-22 01:35:39,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a38ddda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:35:39, skipping insertion in model container [2022-11-22 01:35:39,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:35:39" (3/3) ... [2022-11-22 01:35:39,222 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-22 01:35:39,243 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:35:39,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 01:35:39,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:35:39,368 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;@7294c8bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:35:39,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 01:35:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 2631 states, 1546 states have (on average 1.3531694695989651) internal successors, (2092), 1648 states have internal predecessors, (2092), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 898 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-22 01:35:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-22 01:35:39,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:35:39,417 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:35:39,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:35:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:35:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1730519790, now seen corresponding path program 1 times [2022-11-22 01:35:39,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:35:39,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365058113] [2022-11-22 01:35:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:35:39,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:35:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:35:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 01:35:40,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:35:40,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365058113] [2022-11-22 01:35:40,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365058113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:35:40,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:35:40,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:35:40,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972404030] [2022-11-22 01:35:40,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:35:40,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:35:40,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:35:40,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:35:40,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:35:40,849 INFO L87 Difference]: Start difference. First operand has 2631 states, 1546 states have (on average 1.3531694695989651) internal successors, (2092), 1648 states have internal predecessors, (2092), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 898 states have call predecessors, (944), 944 states have call successors, (944) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:35:47,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:48,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:35:48,798 INFO L93 Difference]: Finished difference Result 7598 states and 11694 transitions. [2022-11-22 01:35:48,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:35:48,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2022-11-22 01:35:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:35:48,848 INFO L225 Difference]: With dead ends: 7598 [2022-11-22 01:35:48,848 INFO L226 Difference]: Without dead ends: 4983 [2022-11-22 01:35:48,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:35:48,876 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 3590 mSDsluCounter, 3496 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3590 SdHoareTripleChecker+Valid, 7884 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:35:48,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3590 Valid, 7884 Invalid, 910 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 902 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-22 01:35:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4983 states. [2022-11-22 01:35:49,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4983 to 4968. [2022-11-22 01:35:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4968 states, 2923 states have (on average 1.3445090660280534) internal successors, (3930), 3114 states have internal predecessors, (3930), 1785 states have call successors, (1785), 258 states have call predecessors, (1785), 257 states have return successors, (1781), 1694 states have call predecessors, (1781), 1781 states have call successors, (1781) [2022-11-22 01:35:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4968 states to 4968 states and 7496 transitions. [2022-11-22 01:35:49,768 INFO L78 Accepts]: Start accepts. Automaton has 4968 states and 7496 transitions. Word has length 151 [2022-11-22 01:35:49,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:35:49,771 INFO L495 AbstractCegarLoop]: Abstraction has 4968 states and 7496 transitions. [2022-11-22 01:35:49,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:35:49,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4968 states and 7496 transitions. [2022-11-22 01:35:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-22 01:35:49,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:35:49,791 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:35:49,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:35:49,791 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:35:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:35:49,792 INFO L85 PathProgramCache]: Analyzing trace with hash -30103493, now seen corresponding path program 1 times [2022-11-22 01:35:49,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:35:49,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644815459] [2022-11-22 01:35:49,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:35:49,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:35:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:35:50,617 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 01:35:50,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:35:50,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644815459] [2022-11-22 01:35:50,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644815459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:35:50,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:35:50,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:35:50,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157032899] [2022-11-22 01:35:50,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:35:50,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:35:50,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:35:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:35:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:35:50,622 INFO L87 Difference]: Start difference. First operand 4968 states and 7496 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:35:57,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:35:58,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:35:58,283 INFO L93 Difference]: Finished difference Result 11019 states and 16647 transitions. [2022-11-22 01:35:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:35:58,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2022-11-22 01:35:58,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:35:58,332 INFO L225 Difference]: With dead ends: 11019 [2022-11-22 01:35:58,332 INFO L226 Difference]: Without dead ends: 6078 [2022-11-22 01:35:58,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:35:58,367 INFO L413 NwaCegarLoop]: 4123 mSDtfsCounter, 2642 mSDsluCounter, 3472 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2642 SdHoareTripleChecker+Valid, 7595 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:35:58,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2642 Valid, 7595 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 932 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-22 01:35:58,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2022-11-22 01:35:59,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6078 to 6052. [2022-11-22 01:35:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6052 states, 3612 states have (on average 1.350498338870432) internal successors, (4878), 3833 states have internal predecessors, (4878), 2126 states have call successors, (2126), 313 states have call predecessors, (2126), 311 states have return successors, (2122), 2019 states have call predecessors, (2122), 2122 states have call successors, (2122) [2022-11-22 01:35:59,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6052 states to 6052 states and 9126 transitions. [2022-11-22 01:35:59,070 INFO L78 Accepts]: Start accepts. Automaton has 6052 states and 9126 transitions. Word has length 159 [2022-11-22 01:35:59,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:35:59,071 INFO L495 AbstractCegarLoop]: Abstraction has 6052 states and 9126 transitions. [2022-11-22 01:35:59,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:35:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6052 states and 9126 transitions. [2022-11-22 01:35:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-22 01:35:59,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:35:59,076 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:35:59,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:35:59,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:35:59,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:35:59,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1054179623, now seen corresponding path program 1 times [2022-11-22 01:35:59,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:35:59,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266245371] [2022-11-22 01:35:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:35:59,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:35:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:35:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 01:35:59,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:35:59,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266245371] [2022-11-22 01:35:59,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266245371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:35:59,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:35:59,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:35:59,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014004663] [2022-11-22 01:35:59,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:35:59,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:35:59,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:35:59,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:35:59,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:35:59,569 INFO L87 Difference]: Start difference. First operand 6052 states and 9126 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:36:04,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:07,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:36:07,126 INFO L93 Difference]: Finished difference Result 15526 states and 23377 transitions. [2022-11-22 01:36:07,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:36:07,127 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 160 [2022-11-22 01:36:07,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:36:07,195 INFO L225 Difference]: With dead ends: 15526 [2022-11-22 01:36:07,195 INFO L226 Difference]: Without dead ends: 9501 [2022-11-22 01:36:07,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:36:07,234 INFO L413 NwaCegarLoop]: 4358 mSDtfsCounter, 3446 mSDsluCounter, 3466 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3446 SdHoareTripleChecker+Valid, 7824 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:36:07,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3446 Valid, 7824 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-22 01:36:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9501 states. [2022-11-22 01:36:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9501 to 9463. [2022-11-22 01:36:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9463 states, 5617 states have (on average 1.3416414456115364) internal successors, (7536), 5966 states have internal predecessors, (7536), 3343 states have call successors, (3343), 503 states have call predecessors, (3343), 500 states have return successors, (3342), 3165 states have call predecessors, (3342), 3339 states have call successors, (3342) [2022-11-22 01:36:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9463 states to 9463 states and 14221 transitions. [2022-11-22 01:36:08,034 INFO L78 Accepts]: Start accepts. Automaton has 9463 states and 14221 transitions. Word has length 160 [2022-11-22 01:36:08,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:36:08,036 INFO L495 AbstractCegarLoop]: Abstraction has 9463 states and 14221 transitions. [2022-11-22 01:36:08,037 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:36:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 9463 states and 14221 transitions. [2022-11-22 01:36:08,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-22 01:36:08,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:36:08,041 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:36:08,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:36:08,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:36:08,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:36:08,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1050826470, now seen corresponding path program 1 times [2022-11-22 01:36:08,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:36:08,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210171961] [2022-11-22 01:36:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:08,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:36:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 01:36:08,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:36:08,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210171961] [2022-11-22 01:36:08,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210171961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:36:08,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:36:08,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:36:08,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941135454] [2022-11-22 01:36:08,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:36:08,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:36:08,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:36:08,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:36:08,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:36:08,644 INFO L87 Difference]: Start difference. First operand 9463 states and 14221 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 01:36:15,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:16,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:36:16,752 INFO L93 Difference]: Finished difference Result 26392 states and 39622 transitions. [2022-11-22 01:36:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:36:16,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 165 [2022-11-22 01:36:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:36:16,868 INFO L225 Difference]: With dead ends: 26392 [2022-11-22 01:36:16,868 INFO L226 Difference]: Without dead ends: 16956 [2022-11-22 01:36:16,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:36:16,921 INFO L413 NwaCegarLoop]: 4479 mSDtfsCounter, 3620 mSDsluCounter, 3495 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3620 SdHoareTripleChecker+Valid, 7974 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:36:16,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3620 Valid, 7974 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 941 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-22 01:36:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16956 states. [2022-11-22 01:36:18,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16956 to 16911. [2022-11-22 01:36:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16911 states, 10014 states have (on average 1.3377271819452765) internal successors, (13396), 10654 states have internal predecessors, (13396), 5978 states have call successors, (5978), 921 states have call predecessors, (5978), 916 states have return successors, (5980), 5647 states have call predecessors, (5980), 5974 states have call successors, (5980) [2022-11-22 01:36:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16911 states to 16911 states and 25354 transitions. [2022-11-22 01:36:18,391 INFO L78 Accepts]: Start accepts. Automaton has 16911 states and 25354 transitions. Word has length 165 [2022-11-22 01:36:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:36:18,392 INFO L495 AbstractCegarLoop]: Abstraction has 16911 states and 25354 transitions. [2022-11-22 01:36:18,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 01:36:18,392 INFO L276 IsEmpty]: Start isEmpty. Operand 16911 states and 25354 transitions. [2022-11-22 01:36:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-22 01:36:18,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:36:18,397 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:36:18,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:36:18,397 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:36:18,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:36:18,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1211718805, now seen corresponding path program 1 times [2022-11-22 01:36:18,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:36:18,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65943026] [2022-11-22 01:36:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:18,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:36:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 01:36:18,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:36:18,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65943026] [2022-11-22 01:36:18,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65943026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:36:18,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:36:18,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:36:18,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943462824] [2022-11-22 01:36:18,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:36:18,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:36:18,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:36:18,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:36:18,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:36:18,985 INFO L87 Difference]: Start difference. First operand 16911 states and 25354 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 01:36:24,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:27,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:36:28,884 INFO L93 Difference]: Finished difference Result 47626 states and 71354 transitions. [2022-11-22 01:36:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:36:28,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 172 [2022-11-22 01:36:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:36:29,101 INFO L225 Difference]: With dead ends: 47626 [2022-11-22 01:36:29,101 INFO L226 Difference]: Without dead ends: 30742 [2022-11-22 01:36:29,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:36:29,209 INFO L413 NwaCegarLoop]: 4605 mSDtfsCounter, 3889 mSDsluCounter, 3481 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3889 SdHoareTripleChecker+Valid, 8086 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:36:29,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3889 Valid, 8086 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 908 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-11-22 01:36:29,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30742 states. [2022-11-22 01:36:31,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30742 to 30708. [2022-11-22 01:36:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30708 states, 18207 states have (on average 1.3370132366672158) internal successors, (24343), 19371 states have internal predecessors, (24343), 10796 states have call successors, (10796), 1719 states have call predecessors, (10796), 1702 states have return successors, (10831), 10171 states have call predecessors, (10831), 10792 states have call successors, (10831) [2022-11-22 01:36:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30708 states to 30708 states and 45970 transitions. [2022-11-22 01:36:31,949 INFO L78 Accepts]: Start accepts. Automaton has 30708 states and 45970 transitions. Word has length 172 [2022-11-22 01:36:31,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:36:31,950 INFO L495 AbstractCegarLoop]: Abstraction has 30708 states and 45970 transitions. [2022-11-22 01:36:31,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 01:36:31,950 INFO L276 IsEmpty]: Start isEmpty. Operand 30708 states and 45970 transitions. [2022-11-22 01:36:31,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-22 01:36:31,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:36:31,952 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:36:31,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:36:31,953 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)] === [2022-11-22 01:36:31,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:36:31,953 INFO L85 PathProgramCache]: Analyzing trace with hash 147839191, now seen corresponding path program 1 times [2022-11-22 01:36:31,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:36:31,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340257379] [2022-11-22 01:36:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:31,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:36:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 01:36:32,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:36:32,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340257379] [2022-11-22 01:36:32,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340257379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:36:32,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:36:32,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:36:32,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071001808] [2022-11-22 01:36:32,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:36:32,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:36:32,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:36:32,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:36:32,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:36:32,395 INFO L87 Difference]: Start difference. First operand 30708 states and 45970 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 01:36:39,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:41,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:36:41,691 INFO L93 Difference]: Finished difference Result 90845 states and 136001 transitions. [2022-11-22 01:36:41,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:36:41,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 172 [2022-11-22 01:36:41,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:36:42,041 INFO L225 Difference]: With dead ends: 90845 [2022-11-22 01:36:42,042 INFO L226 Difference]: Without dead ends: 60164 [2022-11-22 01:36:42,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:36:42,186 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 3612 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3612 SdHoareTripleChecker+Valid, 8022 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:36:42,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3612 Valid, 8022 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-22 01:36:42,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60164 states. [2022-11-22 01:36:46,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60164 to 60100. [2022-11-22 01:36:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60100 states, 35617 states have (on average 1.3351489457281636) internal successors, (47554), 37922 states have internal predecessors, (47554), 21135 states have call successors, (21135), 3378 states have call predecessors, (21135), 3345 states have return successors, (21208), 19889 states have call predecessors, (21208), 21131 states have call successors, (21208) [2022-11-22 01:36:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60100 states to 60100 states and 89897 transitions. [2022-11-22 01:36:47,389 INFO L78 Accepts]: Start accepts. Automaton has 60100 states and 89897 transitions. Word has length 172 [2022-11-22 01:36:47,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:36:47,403 INFO L495 AbstractCegarLoop]: Abstraction has 60100 states and 89897 transitions. [2022-11-22 01:36:47,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 01:36:47,403 INFO L276 IsEmpty]: Start isEmpty. Operand 60100 states and 89897 transitions. [2022-11-22 01:36:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-22 01:36:47,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:36:47,407 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:36:47,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:36:47,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:36:47,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:36:47,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1951855211, now seen corresponding path program 1 times [2022-11-22 01:36:47,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:36:47,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881158169] [2022-11-22 01:36:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:47,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:36:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 01:36:48,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:36:48,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881158169] [2022-11-22 01:36:48,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881158169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:36:48,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:36:48,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:36:48,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683546174] [2022-11-22 01:36:48,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:36:48,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:36:48,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:36:48,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:36:48,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:36:48,119 INFO L87 Difference]: Start difference. First operand 60100 states and 89897 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 01:36:55,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:36:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:36:59,720 INFO L93 Difference]: Finished difference Result 175338 states and 263035 transitions. [2022-11-22 01:36:59,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:36:59,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 173 [2022-11-22 01:36:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:00,392 INFO L225 Difference]: With dead ends: 175338 [2022-11-22 01:37:00,392 INFO L226 Difference]: Without dead ends: 115265 [2022-11-22 01:37:00,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:37:00,992 INFO L413 NwaCegarLoop]: 4623 mSDtfsCounter, 3621 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3621 SdHoareTripleChecker+Valid, 8024 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:00,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3621 Valid, 8024 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 931 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-11-22 01:37:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115265 states. [2022-11-22 01:37:07,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115265 to 115156. [2022-11-22 01:37:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115156 states, 68358 states have (on average 1.3376049621112378) internal successors, (91436), 72812 states have internal predecessors, (91436), 40382 states have call successors, (40382), 6522 states have call predecessors, (40382), 6413 states have return successors, (41193), 37872 states have call predecessors, (41193), 40378 states have call successors, (41193) [2022-11-22 01:37:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115156 states to 115156 states and 173011 transitions. [2022-11-22 01:37:09,094 INFO L78 Accepts]: Start accepts. Automaton has 115156 states and 173011 transitions. Word has length 173 [2022-11-22 01:37:09,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:09,095 INFO L495 AbstractCegarLoop]: Abstraction has 115156 states and 173011 transitions. [2022-11-22 01:37:09,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-22 01:37:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 115156 states and 173011 transitions. [2022-11-22 01:37:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-22 01:37:09,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:09,100 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 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] [2022-11-22 01:37:09,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:37:09,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:37:09,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:09,101 INFO L85 PathProgramCache]: Analyzing trace with hash 345564678, now seen corresponding path program 1 times [2022-11-22 01:37:09,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:09,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821776680] [2022-11-22 01:37:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:09,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-11-22 01:37:09,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:09,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821776680] [2022-11-22 01:37:09,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821776680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:09,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:37:09,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:37:09,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564648564] [2022-11-22 01:37:09,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:09,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:09,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:37:09,669 INFO L87 Difference]: Start difference. First operand 115156 states and 173011 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 01:37:18,238 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 []