./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c0c438f99a824e3d15e4313dc5ea51e50cfc55cdb2cc6e49c87ebde175ff530e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:53:20,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:53:20,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:53:20,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:53:20,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:53:20,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:53:20,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:53:20,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:53:20,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:53:20,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:53:20,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:53:20,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:53:20,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:53:20,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:53:20,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:53:20,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:53:20,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:53:20,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:53:20,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:53:20,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:53:20,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:53:20,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:53:20,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:53:20,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:53:20,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:53:20,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:53:20,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:53:20,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:53:20,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:53:20,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:53:20,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:53:20,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:53:20,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:53:20,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:53:20,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:53:20,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:53:20,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:53:20,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:53:20,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:53:20,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:53:20,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:53:20,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:53:20,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:53:20,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:53:20,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:53:20,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:53:20,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:53:20,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:53:20,516 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:53:20,516 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:53:20,517 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:53:20,517 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:53:20,518 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:53:20,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:53:20,519 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:53:20,519 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:53:20,519 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:53:20,519 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:53:20,520 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:53:20,520 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:53:20,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:53:20,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:53:20,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:53:20,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:53:20,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:53:20,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:53:20,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:53:20,523 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:53:20,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:53:20,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:53:20,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:53:20,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:53:20,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:53:20,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:53:20,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:53:20,526 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:53:20,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:53:20,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:53:20,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:53:20,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:53:20,527 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0c438f99a824e3d15e4313dc5ea51e50cfc55cdb2cc6e49c87ebde175ff530e [2021-11-25 18:53:20,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:53:20,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:53:20,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:53:20,861 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:53:20,861 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:53:20,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 18:53:20,935 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/data/f302012d2/cb868a3e35f24069a6c9c60024ba1658/FLAGa28ef149e [2021-11-25 18:53:22,207 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:53:22,207 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 18:53:22,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/data/f302012d2/cb868a3e35f24069a6c9c60024ba1658/FLAGa28ef149e [2021-11-25 18:53:22,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/data/f302012d2/cb868a3e35f24069a6c9c60024ba1658 [2021-11-25 18:53:22,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:53:22,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:53:22,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:53:22,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:53:22,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:53:22,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:53:22" (1/1) ... [2021-11-25 18:53:22,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23153b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:22, skipping insertion in model container [2021-11-25 18:53:22,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:53:22" (1/1) ... [2021-11-25 18:53:22,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:53:23,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:53:32,034 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789335,789348] [2021-11-25 18:53:32,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789504,789517] [2021-11-25 18:53:32,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789671,789684] [2021-11-25 18:53:32,038 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789839,789852] [2021-11-25 18:53:32,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:53:32,154 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:53:33,072 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789335,789348] [2021-11-25 18:53:33,073 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789504,789517] [2021-11-25 18:53:33,073 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789671,789684] [2021-11-25 18:53:33,074 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789839,789852] [2021-11-25 18:53:33,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:53:33,541 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:53:33,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:33 WrapperNode [2021-11-25 18:53:33,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:53:33,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:53:33,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:53:33,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:53:33,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:33" (1/1) ... [2021-11-25 18:53:33,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:33" (1/1) ... [2021-11-25 18:53:34,378 INFO L137 Inliner]: procedures = 738, calls = 11729, calls flagged for inlining = 334, calls inlined = 253, statements flattened = 13056 [2021-11-25 18:53:34,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:53:34,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:53:34,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:53:34,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:53:34,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:33" (1/1) ... [2021-11-25 18:53:34,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:33" (1/1) ... [2021-11-25 18:53:34,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:33" (1/1) ... [2021-11-25 18:53:34,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:33" (1/1) ... [2021-11-25 18:53:34,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:33" (1/1) ... [2021-11-25 18:53:35,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:33" (1/1) ... [2021-11-25 18:53:35,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:33" (1/1) ... [2021-11-25 18:53:35,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:53:35,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:53:35,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:53:35,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:53:35,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:33" (1/1) ... [2021-11-25 18:53:35,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:53:35,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:53:35,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:53:35,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbe23c54-bb8b-4bc9-bdec-53d6c71d1140/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:53:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 18:53:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 18:53:35,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:53:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:53:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2021-11-25 18:53:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2021-11-25 18:53:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2021-11-25 18:53:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2021-11-25 18:53:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2021-11-25 18:53:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2021-11-25 18:53:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:53:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:53:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 18:53:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 18:53:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-25 18:53:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-25 18:53:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2021-11-25 18:53:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2021-11-25 18:53:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_78 [2021-11-25 18:53:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_78 [2021-11-25 18:53:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:53:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:53:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2021-11-25 18:53:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2021-11-25 18:53:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 18:53:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 18:53:35,271 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 18:53:35,272 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 18:53:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2021-11-25 18:53:35,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2021-11-25 18:53:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2021-11-25 18:53:35,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2021-11-25 18:53:35,272 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 18:53:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 18:53:35,273 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 18:53:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 18:53:35,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:53:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:53:35,273 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:53:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:53:35,274 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:53:35,274 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:53:35,274 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2021-11-25 18:53:35,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2021-11-25 18:53:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:53:35,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:53:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2021-11-25 18:53:35,276 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2021-11-25 18:53:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2021-11-25 18:53:35,276 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2021-11-25 18:53:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2021-11-25 18:53:35,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2021-11-25 18:53:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 18:53:35,277 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 18:53:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:53:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2021-11-25 18:53:35,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2021-11-25 18:53:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 18:53:35,278 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 18:53:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2021-11-25 18:53:35,278 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2021-11-25 18:53:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 18:53:35,279 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 18:53:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure isr_scan_complete [2021-11-25 18:53:35,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_scan_complete [2021-11-25 18:53:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2021-11-25 18:53:35,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2021-11-25 18:53:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:53:35,279 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:53:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2021-11-25 18:53:35,280 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2021-11-25 18:53:35,280 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-25 18:53:35,280 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-25 18:53:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:53:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 18:53:35,281 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 18:53:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 18:53:35,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 18:53:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:53:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2021-11-25 18:53:35,282 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2021-11-25 18:53:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:53:35,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:53:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2021-11-25 18:53:35,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2021-11-25 18:53:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:53:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 18:53:35,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 18:53:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2021-11-25 18:53:35,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2021-11-25 18:53:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2021-11-25 18:53:35,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2021-11-25 18:53:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:53:35,285 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:53:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:53:35,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:53:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:53:35,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:53:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:53:35,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:53:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2021-11-25 18:53:35,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2021-11-25 18:53:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 18:53:35,286 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 18:53:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 18:53:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 18:53:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2021-11-25 18:53:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2021-11-25 18:53:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 18:53:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 18:53:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2021-11-25 18:53:35,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2021-11-25 18:53:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2021-11-25 18:53:35,293 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2021-11-25 18:53:35,293 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2021-11-25 18:53:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2021-11-25 18:53:35,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:53:35,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:53:35,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:53:35,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:53:35,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:53:35,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:53:35,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:53:35,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:53:35,299 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2021-11-25 18:53:35,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2021-11-25 18:53:35,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:53:35,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:53:35,300 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2021-11-25 18:53:35,300 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2021-11-25 18:53:35,300 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 18:53:35,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 18:53:35,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:53:35,300 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-25 18:53:35,300 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-25 18:53:35,301 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:53:35,301 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2021-11-25 18:53:35,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2021-11-25 18:53:35,301 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:53:35,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:53:35,301 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2021-11-25 18:53:35,301 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2021-11-25 18:53:35,301 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 18:53:35,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 18:53:35,302 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2021-11-25 18:53:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2021-11-25 18:53:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 18:53:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 18:53:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 18:53:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 18:53:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:53:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:53:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2021-11-25 18:53:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2021-11-25 18:53:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2021-11-25 18:53:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2021-11-25 18:53:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-25 18:53:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-25 18:53:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2021-11-25 18:53:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2021-11-25 18:53:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-25 18:53:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-25 18:53:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:53:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:53:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-25 18:53:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-25 18:53:35,305 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2021-11-25 18:53:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2021-11-25 18:53:35,305 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2021-11-25 18:53:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2021-11-25 18:53:35,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 18:53:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 18:53:35,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:53:35,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:53:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:53:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:53:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2021-11-25 18:53:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2021-11-25 18:53:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 18:53:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 18:53:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2021-11-25 18:53:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2021-11-25 18:53:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2021-11-25 18:53:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2021-11-25 18:53:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:53:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:53:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2021-11-25 18:53:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2021-11-25 18:53:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2021-11-25 18:53:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2021-11-25 18:53:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 18:53:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 18:53:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2021-11-25 18:53:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2021-11-25 18:53:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2021-11-25 18:53:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2021-11-25 18:53:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_low_lock_of_ipw2100_priv [2021-11-25 18:53:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_low_lock_of_ipw2100_priv [2021-11-25 18:53:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2021-11-25 18:53:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2021-11-25 18:53:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_rf_kill [2021-11-25 18:53:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_rf_kill [2021-11-25 18:53:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:53:35,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:53:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:53:35,309 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:53:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2021-11-25 18:53:35,309 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2021-11-25 18:53:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2021-11-25 18:53:35,309 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2021-11-25 18:53:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 18:53:35,309 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 18:53:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:53:35,310 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:53:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:53:35,310 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:53:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2021-11-25 18:53:35,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2021-11-25 18:53:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 18:53:35,310 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 18:53:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 18:53:35,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 18:53:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 18:53:35,311 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 18:53:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 18:53:35,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 18:53:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:53:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2021-11-25 18:53:35,311 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2021-11-25 18:53:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:53:35,311 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:53:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2021-11-25 18:53:35,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2021-11-25 18:53:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:53:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2021-11-25 18:53:35,316 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2021-11-25 18:53:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_association_lost [2021-11-25 18:53:35,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_association_lost [2021-11-25 18:53:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2021-11-25 18:53:35,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2021-11-25 18:53:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2021-11-25 18:53:35,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2021-11-25 18:53:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2021-11-25 18:53:35,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2021-11-25 18:53:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-25 18:53:35,318 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-25 18:53:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:53:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2021-11-25 18:53:35,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2021-11-25 18:53:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 18:53:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 18:53:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2021-11-25 18:53:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2021-11-25 18:53:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2021-11-25 18:53:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2021-11-25 18:53:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:53:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:53:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:53:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:53:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2021-11-25 18:53:35,320 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2021-11-25 18:53:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:53:35,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:53:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 18:53:35,320 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 18:53:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 18:53:35,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 18:53:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2021-11-25 18:53:35,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2021-11-25 18:53:35,320 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2021-11-25 18:53:35,321 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2021-11-25 18:53:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2021-11-25 18:53:35,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2021-11-25 18:53:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-25 18:53:35,321 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-25 18:53:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2021-11-25 18:53:35,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2021-11-25 18:53:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 18:53:35,321 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 18:53:35,321 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-25 18:53:35,322 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-25 18:53:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:53:35,322 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:53:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-25 18:53:35,322 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-25 18:53:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2021-11-25 18:53:35,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2021-11-25 18:53:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2021-11-25 18:53:35,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2021-11-25 18:53:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-25 18:53:35,323 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-25 18:53:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:53:35,323 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:53:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:53:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2021-11-25 18:53:35,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2021-11-25 18:53:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:53:35,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:53:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2021-11-25 18:53:35,323 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2021-11-25 18:53:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2021-11-25 18:53:35,324 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2021-11-25 18:53:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 18:53:35,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 18:53:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2021-11-25 18:53:35,324 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2021-11-25 18:53:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 18:53:35,324 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 18:53:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2021-11-25 18:53:35,324 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2021-11-25 18:53:35,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_91 [2021-11-25 18:53:35,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_91 [2021-11-25 18:53:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 18:53:35,325 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 18:53:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 18:53:35,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 18:53:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2021-11-25 18:53:35,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2021-11-25 18:53:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:53:35,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:53:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 18:53:35,325 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 18:53:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 18:53:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 18:53:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 18:53:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 18:53:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 18:53:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 18:53:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2021-11-25 18:53:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2021-11-25 18:53:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 18:53:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 18:53:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2021-11-25 18:53:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2021-11-25 18:53:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 18:53:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_low_lock_of_ipw2100_priv [2021-11-25 18:53:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_low_lock_of_ipw2100_priv [2021-11-25 18:53:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2021-11-25 18:53:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2021-11-25 18:53:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_associated [2021-11-25 18:53:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_associated [2021-11-25 18:53:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:53:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_scanning [2021-11-25 18:53:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_scanning [2021-11-25 18:53:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2021-11-25 18:53:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2021-11-25 18:53:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:53:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:53:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 18:53:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 18:53:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2021-11-25 18:53:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2021-11-25 18:53:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2021-11-25 18:53:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2021-11-25 18:53:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-25 18:53:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-25 18:53:36,734 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:53:36,742 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:53:49,777 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:56:07,230 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:56:07,385 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:56:12,328 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:56:12,328 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 18:56:12,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:12 BoogieIcfgContainer [2021-11-25 18:56:12,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:56:12,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:56:12,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:56:12,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:56:12,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:53:22" (1/3) ... [2021-11-25 18:56:12,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570e1067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:12, skipping insertion in model container [2021-11-25 18:56:12,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:53:33" (2/3) ... [2021-11-25 18:56:12,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570e1067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:12, skipping insertion in model container [2021-11-25 18:56:12,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:12" (3/3) ... [2021-11-25 18:56:12,346 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 18:56:12,352 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:56:12,352 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 18:56:12,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:56:12,444 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:56:12,444 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 18:56:12,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 2834 states, 1768 states have (on average 1.339366515837104) internal successors, (2368), 1785 states have internal predecessors, (2368), 895 states have call successors, (895), 169 states have call predecessors, (895), 168 states have return successors, (889), 887 states have call predecessors, (889), 889 states have call successors, (889) [2021-11-25 18:56:12,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-25 18:56:12,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:12,562 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:12,567 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:56:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:12,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2087282038, now seen corresponding path program 1 times [2021-11-25 18:56:12,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:12,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131986978] [2021-11-25 18:56:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:12,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2021-11-25 18:56:14,375 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:14,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131986978] [2021-11-25 18:56:14,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131986978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:14,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:14,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:14,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607561736] [2021-11-25 18:56:14,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:14,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:56:14,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:14,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:56:14,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:14,417 INFO L87 Difference]: Start difference. First operand has 2834 states, 1768 states have (on average 1.339366515837104) internal successors, (2368), 1785 states have internal predecessors, (2368), 895 states have call successors, (895), 169 states have call predecessors, (895), 168 states have return successors, (889), 887 states have call predecessors, (889), 889 states have call successors, (889) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 18:56:18,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:21,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:24,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:26,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:29,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:56:31,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:56:33,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:37,032 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:40,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:43,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:45,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:47,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:50,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:52,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:56:52,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:52,715 INFO L93 Difference]: Finished difference Result 7990 states and 11912 transitions. [2021-11-25 18:56:52,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:56:52,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 180 [2021-11-25 18:56:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:52,778 INFO L225 Difference]: With dead ends: 7990 [2021-11-25 18:56:52,778 INFO L226 Difference]: Without dead ends: 5174 [2021-11-25 18:56:52,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:52,813 INFO L933 BasicCegarLoop]: 4389 mSDtfsCounter, 3457 mSDsluCounter, 4092 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 7 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3462 SdHoareTripleChecker+Valid, 7991 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:52,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3462 Valid, 7991 Invalid, 1018 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1000 Invalid, 11 Unknown, 0 Unchecked, 37.8s Time] [2021-11-25 18:56:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5174 states. [2021-11-25 18:56:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5174 to 5142. [2021-11-25 18:56:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5142 states, 3213 states have (on average 1.334267040149393) internal successors, (4287), 3253 states have internal predecessors, (4287), 1613 states have call successors, (1613), 316 states have call predecessors, (1613), 313 states have return successors, (1612), 1596 states have call predecessors, (1612), 1609 states have call successors, (1612) [2021-11-25 18:56:53,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 7512 transitions. [2021-11-25 18:56:53,311 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 7512 transitions. Word has length 180 [2021-11-25 18:56:53,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:53,315 INFO L470 AbstractCegarLoop]: Abstraction has 5142 states and 7512 transitions. [2021-11-25 18:56:53,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 18:56:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 7512 transitions. [2021-11-25 18:56:53,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-25 18:56:53,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:53,331 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:53,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:56:53,332 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:56:53,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:53,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1602487755, now seen corresponding path program 1 times [2021-11-25 18:56:53,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:53,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729867714] [2021-11-25 18:56:53,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:53,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2021-11-25 18:56:54,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:54,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729867714] [2021-11-25 18:56:54,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729867714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:54,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:54,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:54,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881008078] [2021-11-25 18:56:54,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:54,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:56:54,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:54,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:56:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:56:54,282 INFO L87 Difference]: Start difference. First operand 5142 states and 7512 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 18:56:58,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:02,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:07,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:10,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:57:14,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:18,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:21,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:23,482 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:25,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:28,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:30,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:57:30,716 INFO L93 Difference]: Finished difference Result 14873 states and 21701 transitions. [2021-11-25 18:57:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:57:30,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 185 [2021-11-25 18:57:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:57:30,822 INFO L225 Difference]: With dead ends: 14873 [2021-11-25 18:57:30,822 INFO L226 Difference]: Without dead ends: 9764 [2021-11-25 18:57:30,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:57:30,855 INFO L933 BasicCegarLoop]: 4375 mSDtfsCounter, 3407 mSDsluCounter, 4055 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 13 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3410 SdHoareTripleChecker+Valid, 7948 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:57:30,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3410 Valid, 7948 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1038 Invalid, 11 Unknown, 0 Unchecked, 35.9s Time] [2021-11-25 18:57:30,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9764 states. [2021-11-25 18:57:31,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9764 to 9759. [2021-11-25 18:57:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9759 states, 6111 states have (on average 1.3307151039109801) internal successors, (8132), 6184 states have internal predecessors, (8132), 3036 states have call successors, (3036), 614 states have call predecessors, (3036), 609 states have return successors, (3041), 3008 states have call predecessors, (3041), 3032 states have call successors, (3041) [2021-11-25 18:57:31,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9759 states to 9759 states and 14209 transitions. [2021-11-25 18:57:31,486 INFO L78 Accepts]: Start accepts. Automaton has 9759 states and 14209 transitions. Word has length 185 [2021-11-25 18:57:31,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:57:31,487 INFO L470 AbstractCegarLoop]: Abstraction has 9759 states and 14209 transitions. [2021-11-25 18:57:31,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 18:57:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand 9759 states and 14209 transitions. [2021-11-25 18:57:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-25 18:57:31,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:31,494 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:31,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:57:31,495 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:57:31,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:31,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1174290470, now seen corresponding path program 1 times [2021-11-25 18:57:31,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:31,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758658836] [2021-11-25 18:57:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:31,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2021-11-25 18:57:32,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:32,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758658836] [2021-11-25 18:57:32,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758658836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:32,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:32,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:57:32,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085457747] [2021-11-25 18:57:32,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:32,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:57:32,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:32,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:57:32,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:57:32,344 INFO L87 Difference]: Start difference. First operand 9759 states and 14209 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-25 18:57:36,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:40,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:43,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:45,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:57:47,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:49,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:50,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:54,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:57:58,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:01,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:03,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:05,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:07,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:10,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:10,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:10,447 INFO L93 Difference]: Finished difference Result 19739 states and 28751 transitions. [2021-11-25 18:58:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:10,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 195 [2021-11-25 18:58:10,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:10,536 INFO L225 Difference]: With dead ends: 19739 [2021-11-25 18:58:10,536 INFO L226 Difference]: Without dead ends: 10013 [2021-11-25 18:58:10,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:10,605 INFO L933 BasicCegarLoop]: 4800 mSDtfsCounter, 2422 mSDsluCounter, 4064 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 16 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 8382 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:10,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2423 Valid, 8382 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1143 Invalid, 11 Unknown, 0 Unchecked, 37.7s Time] [2021-11-25 18:58:10,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10013 states. [2021-11-25 18:58:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10013 to 9983. [2021-11-25 18:58:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9983 states, 6343 states have (on average 1.335803247674602) internal successors, (8473), 6400 states have internal predecessors, (8473), 3015 states have call successors, (3015), 627 states have call predecessors, (3015), 622 states have return successors, (3017), 2988 states have call predecessors, (3017), 3011 states have call successors, (3017) [2021-11-25 18:58:11,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9983 states to 9983 states and 14505 transitions. [2021-11-25 18:58:11,310 INFO L78 Accepts]: Start accepts. Automaton has 9983 states and 14505 transitions. Word has length 195 [2021-11-25 18:58:11,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:11,312 INFO L470 AbstractCegarLoop]: Abstraction has 9983 states and 14505 transitions. [2021-11-25 18:58:11,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-25 18:58:11,312 INFO L276 IsEmpty]: Start isEmpty. Operand 9983 states and 14505 transitions. [2021-11-25 18:58:11,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-25 18:58:11,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:11,320 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:11,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:58:11,321 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:58:11,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:11,321 INFO L85 PathProgramCache]: Analyzing trace with hash -637212680, now seen corresponding path program 1 times [2021-11-25 18:58:11,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:11,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553803404] [2021-11-25 18:58:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:11,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2021-11-25 18:58:12,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:12,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553803404] [2021-11-25 18:58:12,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553803404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:12,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:12,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:58:12,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787430219] [2021-11-25 18:58:12,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:12,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:12,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:12,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:12,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:12,107 INFO L87 Difference]: Start difference. First operand 9983 states and 14505 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 18:58:15,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:19,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:21,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:58:24,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:29,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:32,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:35,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:37,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:39,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:42,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:44,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:44,685 INFO L93 Difference]: Finished difference Result 24314 states and 35284 transitions. [2021-11-25 18:58:44,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:44,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 224 [2021-11-25 18:58:44,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:44,760 INFO L225 Difference]: With dead ends: 24314 [2021-11-25 18:58:44,760 INFO L226 Difference]: Without dead ends: 14364 [2021-11-25 18:58:44,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:44,801 INFO L933 BasicCegarLoop]: 4403 mSDtfsCounter, 3288 mSDsluCounter, 4034 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 7 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3291 SdHoareTripleChecker+Valid, 7956 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:44,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3291 Valid, 7956 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1039 Invalid, 10 Unknown, 0 Unchecked, 32.2s Time] [2021-11-25 18:58:44,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14364 states. [2021-11-25 18:58:45,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14364 to 14325. [2021-11-25 18:58:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14325 states, 9080 states have (on average 1.335022026431718) internal successors, (12122), 9189 states have internal predecessors, (12122), 4312 states have call successors, (4312), 942 states have call predecessors, (4312), 930 states have return successors, (4319), 4246 states have call predecessors, (4319), 4308 states have call successors, (4319) [2021-11-25 18:58:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14325 states to 14325 states and 20753 transitions. [2021-11-25 18:58:45,657 INFO L78 Accepts]: Start accepts. Automaton has 14325 states and 20753 transitions. Word has length 224 [2021-11-25 18:58:45,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:45,658 INFO L470 AbstractCegarLoop]: Abstraction has 14325 states and 20753 transitions. [2021-11-25 18:58:45,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 18:58:45,658 INFO L276 IsEmpty]: Start isEmpty. Operand 14325 states and 20753 transitions. [2021-11-25 18:58:45,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-25 18:58:45,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:45,665 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:58:45,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:58:45,666 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:58:45,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:45,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1014015407, now seen corresponding path program 1 times [2021-11-25 18:58:45,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:45,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499252438] [2021-11-25 18:58:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:45,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-11-25 18:58:46,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:46,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499252438] [2021-11-25 18:58:46,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499252438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:46,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:46,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:58:46,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615675691] [2021-11-25 18:58:46,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:46,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:58:46,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:46,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:58:46,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:58:46,620 INFO L87 Difference]: Start difference. First operand 14325 states and 20753 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 18:58:50,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:52,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:58:59,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:04,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:05,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:09,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:10,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:12,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:15,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:16,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:17,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:20,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:27,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:32,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:36,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:38,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:41,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:43,824 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:46,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:46,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:46,953 INFO L93 Difference]: Finished difference Result 28223 states and 40853 transitions. [2021-11-25 18:59:46,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:59:46,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 232 [2021-11-25 18:59:46,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:47,084 INFO L225 Difference]: With dead ends: 28223 [2021-11-25 18:59:47,084 INFO L226 Difference]: Without dead ends: 28221 [2021-11-25 18:59:47,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:59:47,101 INFO L933 BasicCegarLoop]: 6159 mSDtfsCounter, 3477 mSDsluCounter, 18033 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3494 SdHoareTripleChecker+Valid, 22025 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:47,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3494 Valid, 22025 Invalid, 3041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3030 Invalid, 10 Unknown, 0 Unchecked, 59.4s Time] [2021-11-25 18:59:47,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28221 states. [2021-11-25 18:59:48,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28221 to 28214. [2021-11-25 18:59:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28214 states, 17875 states have (on average 1.3343776223776225) internal successors, (23852), 18092 states have internal predecessors, (23852), 8489 states have call successors, (8489), 1871 states have call predecessors, (8489), 1847 states have return successors, (8506), 8356 states have call predecessors, (8506), 8481 states have call successors, (8506) [2021-11-25 18:59:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28214 states to 28214 states and 40847 transitions. [2021-11-25 18:59:48,620 INFO L78 Accepts]: Start accepts. Automaton has 28214 states and 40847 transitions. Word has length 232 [2021-11-25 18:59:48,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:48,621 INFO L470 AbstractCegarLoop]: Abstraction has 28214 states and 40847 transitions. [2021-11-25 18:59:48,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 18:59:48,621 INFO L276 IsEmpty]: Start isEmpty. Operand 28214 states and 40847 transitions. [2021-11-25 18:59:48,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-25 18:59:48,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:48,629 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:48,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:59:48,630 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:59:48,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:48,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1245575864, now seen corresponding path program 1 times [2021-11-25 18:59:48,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:48,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087447474] [2021-11-25 18:59:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:48,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-11-25 18:59:49,700 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:49,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087447474] [2021-11-25 18:59:49,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087447474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:49,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:49,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:59:49,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327373222] [2021-11-25 18:59:49,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:49,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:49,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:49,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:49,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:49,702 INFO L87 Difference]: Start difference. First operand 28214 states and 40847 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:59:53,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:59:55,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:01,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:09,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:12,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:00:14,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:16,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:17,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:19,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:28,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:31,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:34,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:37,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:39,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:41,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:44,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:45,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:45,223 INFO L93 Difference]: Finished difference Result 28511 states and 41204 transitions. [2021-11-25 19:00:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:00:45,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 237 [2021-11-25 19:00:45,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:45,347 INFO L225 Difference]: With dead ends: 28511 [2021-11-25 19:00:45,347 INFO L226 Difference]: Without dead ends: 28509 [2021-11-25 19:00:45,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:00:45,361 INFO L933 BasicCegarLoop]: 6127 mSDtfsCounter, 3428 mSDsluCounter, 17937 mSDsCounter, 0 mSdLazyCounter, 2991 mSolverCounterSat, 1 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3445 SdHoareTripleChecker+Valid, 21923 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2991 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:45,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3445 Valid, 21923 Invalid, 3004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2991 Invalid, 12 Unknown, 0 Unchecked, 54.8s Time] [2021-11-25 19:00:45,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28509 states. [2021-11-25 19:00:46,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28509 to 28484. [2021-11-25 19:00:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28484 states, 18034 states have (on average 1.3338693578795608) internal successors, (24055), 18263 states have internal predecessors, (24055), 8553 states have call successors, (8553), 1916 states have call predecessors, (8553), 1894 states have return successors, (8572), 8410 states have call predecessors, (8572), 8545 states have call successors, (8572) [2021-11-25 19:00:47,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28484 states to 28484 states and 41180 transitions. [2021-11-25 19:00:47,042 INFO L78 Accepts]: Start accepts. Automaton has 28484 states and 41180 transitions. Word has length 237 [2021-11-25 19:00:47,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:47,044 INFO L470 AbstractCegarLoop]: Abstraction has 28484 states and 41180 transitions. [2021-11-25 19:00:47,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 19:00:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 28484 states and 41180 transitions. [2021-11-25 19:00:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-25 19:00:47,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:47,055 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:47,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:00:47,055 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:00:47,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:47,056 INFO L85 PathProgramCache]: Analyzing trace with hash -401839505, now seen corresponding path program 1 times [2021-11-25 19:00:47,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:47,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848179661] [2021-11-25 19:00:47,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:47,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1137 trivial. 0 not checked. [2021-11-25 19:00:48,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:48,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848179661] [2021-11-25 19:00:48,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848179661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:48,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:48,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:00:48,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839607714] [2021-11-25 19:00:48,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:48,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:00:48,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:00:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:00:48,118 INFO L87 Difference]: Start difference. First operand 28484 states and 41180 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:00:51,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:53,645 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:06,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:08,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:11,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:01:13,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:15,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:23,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:28,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:31,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:33,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:35,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:38,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:40,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:41,757 INFO L93 Difference]: Finished difference Result 28515 states and 41207 transitions. [2021-11-25 19:01:41,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:01:41,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 245 [2021-11-25 19:01:41,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:41,867 INFO L225 Difference]: With dead ends: 28515 [2021-11-25 19:01:41,867 INFO L226 Difference]: Without dead ends: 28513 [2021-11-25 19:01:41,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:01:41,881 INFO L933 BasicCegarLoop]: 6127 mSDtfsCounter, 3429 mSDsluCounter, 17938 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 1 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3445 SdHoareTripleChecker+Valid, 21923 SdHoareTripleChecker+Invalid, 3006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:41,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3445 Valid, 21923 Invalid, 3006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2994 Invalid, 11 Unknown, 0 Unchecked, 52.8s Time] [2021-11-25 19:01:41,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28513 states. [2021-11-25 19:01:43,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28513 to 28488. [2021-11-25 19:01:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28488 states, 18037 states have (on average 1.3338138271331152) internal successors, (24058), 18266 states have internal predecessors, (24058), 8553 states have call successors, (8553), 1917 states have call predecessors, (8553), 1895 states have return successors, (8572), 8410 states have call predecessors, (8572), 8545 states have call successors, (8572) [2021-11-25 19:01:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28488 states to 28488 states and 41183 transitions. [2021-11-25 19:01:43,671 INFO L78 Accepts]: Start accepts. Automaton has 28488 states and 41183 transitions. Word has length 245 [2021-11-25 19:01:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:43,673 INFO L470 AbstractCegarLoop]: Abstraction has 28488 states and 41183 transitions. [2021-11-25 19:01:43,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:01:43,673 INFO L276 IsEmpty]: Start isEmpty. Operand 28488 states and 41183 transitions. [2021-11-25 19:01:43,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-25 19:01:43,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:43,684 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:43,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:01:43,685 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:01:43,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:43,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1955490961, now seen corresponding path program 1 times [2021-11-25 19:01:43,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:43,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53245384] [2021-11-25 19:01:43,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:43,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1153 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2021-11-25 19:01:44,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:44,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53245384] [2021-11-25 19:01:44,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53245384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:44,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:44,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:01:44,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12812145] [2021-11-25 19:01:44,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:44,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:01:44,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:44,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:01:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:01:44,612 INFO L87 Difference]: Start difference. First operand 28488 states and 41183 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:01:48,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:50,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:57,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:05,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:08,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:02:10,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:12,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:15,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:23,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:28,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:31,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:33,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:35,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:38,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:40,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:41,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:41,741 INFO L93 Difference]: Finished difference Result 28519 states and 41210 transitions. [2021-11-25 19:02:41,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:02:41,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 248 [2021-11-25 19:02:41,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:41,929 INFO L225 Difference]: With dead ends: 28519 [2021-11-25 19:02:41,929 INFO L226 Difference]: Without dead ends: 28517 [2021-11-25 19:02:41,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:02:41,940 INFO L933 BasicCegarLoop]: 6127 mSDtfsCounter, 3425 mSDsluCounter, 17936 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 1 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3442 SdHoareTripleChecker+Valid, 21923 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:41,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3442 Valid, 21923 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2989 Invalid, 14 Unknown, 0 Unchecked, 56.4s Time] [2021-11-25 19:02:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28517 states. [2021-11-25 19:02:43,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28517 to 28492. [2021-11-25 19:02:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28492 states, 18040 states have (on average 1.3337583148558758) internal successors, (24061), 18269 states have internal predecessors, (24061), 8553 states have call successors, (8553), 1918 states have call predecessors, (8553), 1896 states have return successors, (8572), 8410 states have call predecessors, (8572), 8545 states have call successors, (8572) [2021-11-25 19:02:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28492 states to 28492 states and 41186 transitions. [2021-11-25 19:02:43,459 INFO L78 Accepts]: Start accepts. Automaton has 28492 states and 41186 transitions. Word has length 248 [2021-11-25 19:02:43,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:43,460 INFO L470 AbstractCegarLoop]: Abstraction has 28492 states and 41186 transitions. [2021-11-25 19:02:43,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:02:43,461 INFO L276 IsEmpty]: Start isEmpty. Operand 28492 states and 41186 transitions. [2021-11-25 19:02:43,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-25 19:02:43,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:43,472 INFO L514 BasicCegarLoop]: trace histogram [18, 16, 16, 16, 16, 16, 16, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:43,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:02:43,472 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:02:43,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:43,473 INFO L85 PathProgramCache]: Analyzing trace with hash 159393108, now seen corresponding path program 1 times [2021-11-25 19:02:43,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:43,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249430319] [2021-11-25 19:02:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:43,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2021-11-25 19:02:44,071 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:44,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249430319] [2021-11-25 19:02:44,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249430319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:44,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:44,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:02:44,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674484507] [2021-11-25 19:02:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:44,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:44,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:44,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:44,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:44,073 INFO L87 Difference]: Start difference. First operand 28492 states and 41186 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 19:02:48,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:51,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:02:54,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:57,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:59,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:03:03,713 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:07,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:10,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:12,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:14,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:17,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:19,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:20,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:20,109 INFO L93 Difference]: Finished difference Result 82676 states and 119588 transitions. [2021-11-25 19:03:20,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:03:20,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 243 [2021-11-25 19:03:20,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:20,403 INFO L225 Difference]: With dead ends: 82676 [2021-11-25 19:03:20,404 INFO L226 Difference]: Without dead ends: 54217 [2021-11-25 19:03:20,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:20,490 INFO L933 BasicCegarLoop]: 4767 mSDtfsCounter, 3397 mSDsluCounter, 4100 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 5 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3401 SdHoareTripleChecker+Valid, 8379 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:20,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3401 Valid, 8379 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1099 Invalid, 11 Unknown, 0 Unchecked, 34.5s Time] [2021-11-25 19:03:20,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54217 states. [2021-11-25 19:03:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54217 to 54094. [2021-11-25 19:03:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54094 states, 34145 states have (on average 1.3323180553521745) internal successors, (45492), 34635 states have internal predecessors, (45492), 16346 states have call successors, (16346), 3644 states have call predecessors, (16346), 3600 states have return successors, (16401), 16023 states have call predecessors, (16401), 16338 states have call successors, (16401) [2021-11-25 19:03:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54094 states to 54094 states and 78239 transitions. [2021-11-25 19:03:22,801 INFO L78 Accepts]: Start accepts. Automaton has 54094 states and 78239 transitions. Word has length 243 [2021-11-25 19:03:22,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:22,801 INFO L470 AbstractCegarLoop]: Abstraction has 54094 states and 78239 transitions. [2021-11-25 19:03:22,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 19:03:22,802 INFO L276 IsEmpty]: Start isEmpty. Operand 54094 states and 78239 transitions. [2021-11-25 19:03:22,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-25 19:03:22,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:22,811 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:03:22,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:03:22,811 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:03:22,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:22,812 INFO L85 PathProgramCache]: Analyzing trace with hash 612891433, now seen corresponding path program 1 times [2021-11-25 19:03:22,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:22,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479101226] [2021-11-25 19:03:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:22,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2021-11-25 19:03:24,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:24,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479101226] [2021-11-25 19:03:24,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479101226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:24,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:24,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:03:24,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467686994] [2021-11-25 19:03:24,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:24,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:03:24,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:24,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:03:24,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:24,033 INFO L87 Difference]: Start difference. First operand 54094 states and 78239 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 19:03:27,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:32,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:34,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:36,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:03:38,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:03:40,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:45,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:50,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:53,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:56,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:58,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:00,745 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:03,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:05,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:06,702 INFO L93 Difference]: Finished difference Result 124786 states and 180574 transitions. [2021-11-25 19:04:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:04:06,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 248 [2021-11-25 19:04:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:06,982 INFO L225 Difference]: With dead ends: 124786 [2021-11-25 19:04:06,982 INFO L226 Difference]: Without dead ends: 71144 [2021-11-25 19:04:07,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:04:07,288 INFO L933 BasicCegarLoop]: 5616 mSDtfsCounter, 2414 mSDsluCounter, 4062 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 15 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2417 SdHoareTripleChecker+Valid, 9196 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:07,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2417 Valid, 9196 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1351 Invalid, 11 Unknown, 0 Unchecked, 40.6s Time] [2021-11-25 19:04:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71144 states. [2021-11-25 19:04:09,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71144 to 71046. [2021-11-25 19:04:09,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71046 states, 45119 states have (on average 1.334426738181254) internal successors, (60208), 45735 states have internal predecessors, (60208), 21160 states have call successors, (21160), 4822 states have call predecessors, (21160), 4764 states have return successors, (21229), 20729 states have call predecessors, (21229), 21152 states have call successors, (21229) [2021-11-25 19:04:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71046 states to 71046 states and 102597 transitions. [2021-11-25 19:04:10,172 INFO L78 Accepts]: Start accepts. Automaton has 71046 states and 102597 transitions. Word has length 248 [2021-11-25 19:04:10,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:10,173 INFO L470 AbstractCegarLoop]: Abstraction has 71046 states and 102597 transitions. [2021-11-25 19:04:10,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 19:04:10,173 INFO L276 IsEmpty]: Start isEmpty. Operand 71046 states and 102597 transitions. [2021-11-25 19:04:10,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-25 19:04:10,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:10,183 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:10,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:04:10,183 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:04:10,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:10,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1789584945, now seen corresponding path program 1 times [2021-11-25 19:04:10,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:10,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965238979] [2021-11-25 19:04:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:10,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1157 trivial. 0 not checked. [2021-11-25 19:04:11,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:04:11,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965238979] [2021-11-25 19:04:11,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965238979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:11,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:11,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:04:11,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94612924] [2021-11-25 19:04:11,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:11,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:04:11,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:04:11,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:04:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:04:11,579 INFO L87 Difference]: Start difference. First operand 71046 states and 102597 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 19:04:16,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:22,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:24,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:26,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:32,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:34,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:36,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:38,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:42,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:04:45,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:04:47,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:49,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:51,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:54,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:04:56,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:05:06,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:10,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:13,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:15,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:18,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:20,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:23,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:24,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:24,803 INFO L93 Difference]: Finished difference Result 105989 states and 153100 transitions. [2021-11-25 19:05:24,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:05:24,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 255 [2021-11-25 19:05:24,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:25,305 INFO L225 Difference]: With dead ends: 105989 [2021-11-25 19:05:25,306 INFO L226 Difference]: Without dead ends: 105987 [2021-11-25 19:05:25,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:05:25,347 INFO L933 BasicCegarLoop]: 6124 mSDtfsCounter, 3481 mSDsluCounter, 17941 mSDsCounter, 0 mSdLazyCounter, 2982 mSolverCounterSat, 2 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3494 SdHoareTripleChecker+Valid, 21921 SdHoareTripleChecker+Invalid, 3002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2982 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:25,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3494 Valid, 21921 Invalid, 3002 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2982 Invalid, 18 Unknown, 0 Unchecked, 71.0s Time] [2021-11-25 19:05:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105987 states. [2021-11-25 19:05:29,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105987 to 105980. [2021-11-25 19:05:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105980 states, 67298 states have (on average 1.3345121697524442) internal successors, (89810), 68212 states have internal predecessors, (89810), 31590 states have call successors, (31590), 7178 states have call predecessors, (31590), 7089 states have return successors, (31693), 30950 states have call predecessors, (31693), 31578 states have call successors, (31693) [2021-11-25 19:05:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105980 states to 105980 states and 153093 transitions. [2021-11-25 19:05:30,086 INFO L78 Accepts]: Start accepts. Automaton has 105980 states and 153093 transitions. Word has length 255 [2021-11-25 19:05:30,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:30,086 INFO L470 AbstractCegarLoop]: Abstraction has 105980 states and 153093 transitions. [2021-11-25 19:05:30,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 19:05:30,087 INFO L276 IsEmpty]: Start isEmpty. Operand 105980 states and 153093 transitions. [2021-11-25 19:05:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-25 19:05:30,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:30,097 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:30,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:05:30,097 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:05:30,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1336681777, now seen corresponding path program 1 times [2021-11-25 19:05:30,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:30,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009200238] [2021-11-25 19:05:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:30,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:31,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1175 trivial. 0 not checked. [2021-11-25 19:05:31,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:31,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009200238] [2021-11-25 19:05:31,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009200238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:31,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:31,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:05:31,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558486448] [2021-11-25 19:05:31,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:31,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:05:31,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:05:31,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:05:31,209 INFO L87 Difference]: Start difference. First operand 105980 states and 153093 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 19:05:35,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:37,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:43,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:45,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:48,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:50,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:55,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:57,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:01,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:06:02,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:06:08,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:10,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:20,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []