./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-mutex_drivers-net-wireless-prism54-prism54.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P --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 2bf48d35d7133b2e8327bc0634357c212875c286543fcf18078150bbf7eff020 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:10:02,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:10:02,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:10:02,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:10:02,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:10:02,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:10:02,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:10:02,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:10:02,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:10:02,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:10:02,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:10:02,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:10:02,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:10:02,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:10:02,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:10:02,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:10:02,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:10:02,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:10:02,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:10:02,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:10:02,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:10:02,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:10:02,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:10:02,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:10:02,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:10:02,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:10:02,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:10:02,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:10:02,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:10:02,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:10:02,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:10:02,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:10:02,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:10:02,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:10:02,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:10:02,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:10:02,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:10:02,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:10:02,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:10:02,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:10:02,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:10:02,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:10:02,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:10:02,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:10:02,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:10:02,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:10:02,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:10:02,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:10:02,671 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:10:02,671 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:10:02,671 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:10:02,671 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:10:02,672 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:10:02,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:10:02,673 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:10:02,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:10:02,673 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:10:02,674 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:10:02,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:10:02,674 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:10:02,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:10:02,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:10:02,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:10:02,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:10:02,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:10:02,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:10:02,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:10:02,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:10:02,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:10:02,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:10:02,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:10:02,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:10:02,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:10:02,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:10:02,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:10:02,700 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:10:02,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:10:02,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:10:02,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:10:02,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:10:02,701 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_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf48d35d7133b2e8327bc0634357c212875c286543fcf18078150bbf7eff020 [2021-11-21 00:10:02,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:10:02,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:10:02,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:10:02,995 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:10:02,996 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:10:02,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2021-11-21 00:10:03,072 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/data/a29812926/766c715ad4fd44b6984f19c7f232e992/FLAGbc6bb64d8 [2021-11-21 00:10:04,109 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:10:04,110 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2021-11-21 00:10:04,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/data/a29812926/766c715ad4fd44b6984f19c7f232e992/FLAGbc6bb64d8 [2021-11-21 00:10:04,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/data/a29812926/766c715ad4fd44b6984f19c7f232e992 [2021-11-21 00:10:04,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:10:04,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:10:04,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:10:04,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:10:04,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:10:04,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:10:04" (1/1) ... [2021-11-21 00:10:04,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:04, skipping insertion in model container [2021-11-21 00:10:04,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:10:04" (1/1) ... [2021-11-21 00:10:04,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:10:04,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:10:09,124 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_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[469707,469720] [2021-11-21 00:10:09,129 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_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[469873,469886] [2021-11-21 00:10:09,130 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_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[470037,470050] [2021-11-21 00:10:09,130 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_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[470202,470215] [2021-11-21 00:10:09,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:10:09,347 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:10:09,879 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_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[469707,469720] [2021-11-21 00:10:09,879 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_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[469873,469886] [2021-11-21 00:10:09,880 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_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[470037,470050] [2021-11-21 00:10:09,880 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_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i[470202,470215] [2021-11-21 00:10:09,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:10:10,225 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:10:10,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:10 WrapperNode [2021-11-21 00:10:10,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:10:10,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:10:10,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:10:10,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:10:10,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:10" (1/1) ... [2021-11-21 00:10:10,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:10" (1/1) ... [2021-11-21 00:10:10,798 INFO L137 Inliner]: procedures = 538, calls = 6232, calls flagged for inlining = 274, calls inlined = 248, statements flattened = 8897 [2021-11-21 00:10:10,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:10:10,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:10:10,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:10:10,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:10:10,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:10" (1/1) ... [2021-11-21 00:10:10,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:10" (1/1) ... [2021-11-21 00:10:10,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:10" (1/1) ... [2021-11-21 00:10:10,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:10" (1/1) ... [2021-11-21 00:10:11,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:10" (1/1) ... [2021-11-21 00:10:11,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:10" (1/1) ... [2021-11-21 00:10:11,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:10" (1/1) ... [2021-11-21 00:10:11,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:10:11,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:10:11,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:10:11,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:10:11,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:10" (1/1) ... [2021-11-21 00:10:11,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:10:11,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:10:11,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:10:11,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baf4aebb-ad90-45f5-bbe9-8bcd2211dc0a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:10:11,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_lock_of_islpci_acl [2021-11-21 00:10:11,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_lock_of_islpci_acl [2021-11-21 00:10:11,365 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-21 00:10:11,366 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-21 00:10:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_eth_tx_timeout [2021-11-21 00:10:11,366 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_eth_tx_timeout [2021-11-21 00:10:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-21 00:10:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 00:10:11,367 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 00:10:11,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:10:11,367 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:10:11,367 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_trigger [2021-11-21 00:10:11,367 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_trigger [2021-11-21 00:10:11,367 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 00:10:11,368 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 00:10:11,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:10:11,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:10:11,368 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_mib_mode_helper [2021-11-21 00:10:11,368 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_mib_mode_helper [2021-11-21 00:10:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:10:11,369 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:10:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 00:10:11,369 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 00:10:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:10:11,370 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:10:11,370 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_request [2021-11-21 00:10:11,370 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_request [2021-11-21 00:10:11,371 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-21 00:10:11,371 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-21 00:10:11,371 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 00:10:11,371 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_get_state [2021-11-21 00:10:11,371 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_get_state [2021-11-21 00:10:11,371 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:10:11,372 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:10:11,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:10:11,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:10:11,372 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:10:11,373 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:10:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:10:11,373 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:10:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_release [2021-11-21 00:10:11,374 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_release [2021-11-21 00:10:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:10:11,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:10:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 00:10:11,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 00:10:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 00:10:11,377 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 00:10:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_try [2021-11-21 00:10:11,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_try [2021-11-21 00:10:11,377 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 00:10:11,378 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 00:10:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:10:11,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wpa_lock_of_NOT_ARG_SIGN [2021-11-21 00:10:11,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wpa_lock_of_NOT_ARG_SIGN [2021-11-21 00:10:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure send_simple_event [2021-11-21 00:10:11,379 INFO L138 BoogieDeclarations]: Found implementation of procedure send_simple_event [2021-11-21 00:10:11,379 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-21 00:10:11,380 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-21 00:10:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 00:10:11,380 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 00:10:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure send_formatted_event [2021-11-21 00:10:11,380 INFO L138 BoogieDeclarations]: Found implementation of procedure send_formatted_event [2021-11-21 00:10:11,380 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set [2021-11-21 00:10:11,381 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set [2021-11-21 00:10:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:10:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:10:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 00:10:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 00:10:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:10:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_reset [2021-11-21 00:10:11,383 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_reset [2021-11-21 00:10:11,383 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:10:11,383 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:10:11,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-21 00:10:11,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-21 00:10:11,384 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-11-21 00:10:11,385 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-11-21 00:10:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:10:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:10:11,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:10:11,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:10:11,386 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 00:10:11,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 00:10:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:10:11,387 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:10:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:10:11,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:10:11,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:10:11,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:10:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_open [2021-11-21 00:10:11,388 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_open [2021-11-21 00:10:11,388 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_resume [2021-11-21 00:10:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_resume [2021-11-21 00:10:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 00:10:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 00:10:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:10:11,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:10:11,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:10:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:10:11,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:10:11,390 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2021-11-21 00:10:11,390 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2021-11-21 00:10:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-21 00:10:11,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-21 00:10:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:10:11,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:10:11,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:10:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:10:11,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:10:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:10:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:10:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:10:11,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:10:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_stats_lock_of_NOT_ARG_SIGN [2021-11-21 00:10:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_stats_lock_of_NOT_ARG_SIGN [2021-11-21 00:10:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-21 00:10:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-21 00:10:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 00:10:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 00:10:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:10:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:10:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wpa_lock_of_NOT_ARG_SIGN [2021-11-21 00:10:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wpa_lock_of_NOT_ARG_SIGN [2021-11-21 00:10:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 00:10:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 00:10:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:10:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:10:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure down_write [2021-11-21 00:10:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure down_write [2021-11-21 00:10:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-21 00:10:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-21 00:10:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 00:10:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 00:10:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_prism54_module_exit_12_2 [2021-11-21 00:10:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_prism54_module_exit_12_2 [2021-11-21 00:10:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-21 00:10:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-21 00:10:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-21 00:10:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-21 00:10:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:10:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:10:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-21 00:10:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-21 00:10:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-21 00:10:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-21 00:10:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-21 00:10:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-21 00:10:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_clear_mac [2021-11-21 00:10:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_clear_mac [2021-11-21 00:10:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_wpa_bss_ie_get [2021-11-21 00:10:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_wpa_bss_ie_get [2021-11-21 00:10:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:10:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:10:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:10:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:10:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 00:10:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 00:10:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure handle_request [2021-11-21 00:10:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_request [2021-11-21 00:10:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_bring_down [2021-11-21 00:10:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_bring_down [2021-11-21 00:10:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2021-11-21 00:10:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_stats_lock_of_NOT_ARG_SIGN [2021-11-21 00:10:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 00:10:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 00:10:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:10:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:10:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:10:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:10:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 00:10:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 00:10:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:10:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:10:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-21 00:10:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-21 00:10:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:10:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:10:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:10:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_set_state [2021-11-21 00:10:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_set_state [2021-11-21 00:10:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2021-11-21 00:10:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2021-11-21 00:10:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:10:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_set_varlen [2021-11-21 00:10:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_set_varlen [2021-11-21 00:10:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure up_write [2021-11-21 00:10:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure up_write [2021-11-21 00:10:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-21 00:10:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-21 00:10:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:10:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_close [2021-11-21 00:10:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_close [2021-11-21 00:10:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-21 00:10:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-21 00:10:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_get_request [2021-11-21 00:10:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_get_request [2021-11-21 00:10:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-21 00:10:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-21 00:10:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 00:10:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 00:10:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 00:10:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 00:10:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:10:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:10:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure prism54_remove [2021-11-21 00:10:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure prism54_remove [2021-11-21 00:10:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_w32_flush [2021-11-21 00:10:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_w32_flush [2021-11-21 00:10:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:10:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:10:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 00:10:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 00:10:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-21 00:10:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-21 00:10:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 00:10:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 00:10:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-21 00:10:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-21 00:10:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit_list [2021-11-21 00:10:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit_list [2021-11-21 00:10:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-21 00:10:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-21 00:10:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 00:10:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 00:10:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:10:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:10:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:10:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:10:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgmt_rx_fill [2021-11-21 00:10:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgmt_rx_fill [2021-11-21 00:10:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_mgt_transaction [2021-11-21 00:10:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_mgt_transaction [2021-11-21 00:10:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:10:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:10:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 00:10:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 00:10:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure channel_of_freq [2021-11-21 00:10:11,509 INFO L138 BoogieDeclarations]: Found implementation of procedure channel_of_freq [2021-11-21 00:10:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:10:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-21 00:10:11,510 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-21 00:10:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-21 00:10:11,510 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-21 00:10:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:10:11,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:10:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure islpci_free_memory [2021-11-21 00:10:11,511 INFO L138 BoogieDeclarations]: Found implementation of procedure islpci_free_memory [2021-11-21 00:10:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_islpci_acl [2021-11-21 00:10:11,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_islpci_acl [2021-11-21 00:10:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_commit [2021-11-21 00:10:11,511 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_commit [2021-11-21 00:10:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 00:10:11,512 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 00:10:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure __swab32s [2021-11-21 00:10:11,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab32s [2021-11-21 00:10:11,512 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2021-11-21 00:10:11,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2021-11-21 00:10:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-21 00:10:11,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-21 00:10:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:10:11,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:10:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 00:10:11,513 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 00:10:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-21 00:10:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-21 00:10:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_in_queue [2021-11-21 00:10:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_in_queue [2021-11-21 00:10:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_islpci_acl [2021-11-21 00:10:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_islpci_acl [2021-11-21 00:10:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-21 00:10:11,515 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-21 00:10:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 00:10:11,515 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 00:10:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:10:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:10:11,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:10:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-21 00:10:11,516 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-21 00:10:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure isl38xx_disable_interrupts [2021-11-21 00:10:11,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isl38xx_disable_interrupts [2021-11-21 00:10:12,558 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:10:12,565 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:10:13,014 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:10:20,802 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:10:21,099 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:10:22,673 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:10:22,673 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 00:10:22,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:10:22 BoogieIcfgContainer [2021-11-21 00:10:22,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:10:22,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:10:22,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:10:22,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:10:22,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:10:04" (1/3) ... [2021-11-21 00:10:22,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483db06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:10:22, skipping insertion in model container [2021-11-21 00:10:22,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:10:10" (2/3) ... [2021-11-21 00:10:22,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483db06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:10:22, skipping insertion in model container [2021-11-21 00:10:22,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:10:22" (3/3) ... [2021-11-21 00:10:22,688 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-prism54-prism54.cil.i [2021-11-21 00:10:22,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:10:22,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-21 00:10:22,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:10:22,758 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 [2021-11-21 00:10:22,758 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-21 00:10:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 1847 states, 1095 states have (on average 1.3105022831050228) internal successors, (1435), 1145 states have internal predecessors, (1435), 618 states have call successors, (618), 131 states have call predecessors, (618), 130 states have return successors, (612), 593 states have call predecessors, (612), 612 states have call successors, (612) [2021-11-21 00:10:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-21 00:10:22,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:22,836 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:22,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:10:22,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:22,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1244152710, now seen corresponding path program 1 times [2021-11-21 00:10:22,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:22,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365554310] [2021-11-21 00:10:22,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:22,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-21 00:10:24,001 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:24,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365554310] [2021-11-21 00:10:24,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365554310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:24,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:24,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:10:24,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727658244] [2021-11-21 00:10:24,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:24,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:10:24,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:24,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:10:24,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:10:24,064 INFO L87 Difference]: Start difference. First operand has 1847 states, 1095 states have (on average 1.3105022831050228) internal successors, (1435), 1145 states have internal predecessors, (1435), 618 states have call successors, (618), 131 states have call predecessors, (618), 130 states have return successors, (612), 593 states have call predecessors, (612), 612 states have call successors, (612) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-21 00:10:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:27,653 INFO L93 Difference]: Finished difference Result 5446 states and 8038 transitions. [2021-11-21 00:10:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:10:27,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 81 [2021-11-21 00:10:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:27,700 INFO L225 Difference]: With dead ends: 5446 [2021-11-21 00:10:27,701 INFO L226 Difference]: Without dead ends: 3602 [2021-11-21 00:10:27,720 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 [2021-11-21 00:10:27,724 INFO L933 BasicCegarLoop]: 2892 mSDtfsCounter, 2564 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2564 SdHoareTripleChecker+Valid, 5165 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:27,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2564 Valid, 5165 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-21 00:10:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2021-11-21 00:10:27,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 3596. [2021-11-21 00:10:28,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3596 states, 2145 states have (on average 1.3034965034965036) internal successors, (2796), 2243 states have internal predecessors, (2796), 1191 states have call successors, (1191), 257 states have call predecessors, (1191), 256 states have return successors, (1187), 1149 states have call predecessors, (1187), 1187 states have call successors, (1187) [2021-11-21 00:10:28,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5174 transitions. [2021-11-21 00:10:28,050 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5174 transitions. Word has length 81 [2021-11-21 00:10:28,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:28,053 INFO L470 AbstractCegarLoop]: Abstraction has 3596 states and 5174 transitions. [2021-11-21 00:10:28,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-21 00:10:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5174 transitions. [2021-11-21 00:10:28,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-21 00:10:28,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:28,068 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:28,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:10:28,069 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:10:28,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:28,072 INFO L85 PathProgramCache]: Analyzing trace with hash -831299960, now seen corresponding path program 1 times [2021-11-21 00:10:28,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:28,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837609584] [2021-11-21 00:10:28,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:28,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-21 00:10:28,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:28,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837609584] [2021-11-21 00:10:28,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837609584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:28,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:28,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:10:28,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427238978] [2021-11-21 00:10:28,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:28,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:10:28,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:28,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:10:28,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:10:28,636 INFO L87 Difference]: Start difference. First operand 3596 states and 5174 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-21 00:10:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:32,668 INFO L93 Difference]: Finished difference Result 8953 states and 12879 transitions. [2021-11-21 00:10:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:10:32,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 81 [2021-11-21 00:10:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:32,714 INFO L225 Difference]: With dead ends: 8953 [2021-11-21 00:10:32,714 INFO L226 Difference]: Without dead ends: 5370 [2021-11-21 00:10:32,733 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 [2021-11-21 00:10:32,736 INFO L933 BasicCegarLoop]: 2894 mSDtfsCounter, 2565 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2565 SdHoareTripleChecker+Valid, 5177 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:32,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2565 Valid, 5177 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 00:10:32,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5370 states. [2021-11-21 00:10:33,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5370 to 5348. [2021-11-21 00:10:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5348 states, 3187 states have (on average 1.3024788202070914) internal successors, (4151), 3336 states have internal predecessors, (4151), 1772 states have call successors, (1772), 386 states have call predecessors, (1772), 385 states have return successors, (1768), 1706 states have call predecessors, (1768), 1768 states have call successors, (1768) [2021-11-21 00:10:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 7691 transitions. [2021-11-21 00:10:33,059 INFO L78 Accepts]: Start accepts. Automaton has 5348 states and 7691 transitions. Word has length 81 [2021-11-21 00:10:33,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:33,062 INFO L470 AbstractCegarLoop]: Abstraction has 5348 states and 7691 transitions. [2021-11-21 00:10:33,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-21 00:10:33,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5348 states and 7691 transitions. [2021-11-21 00:10:33,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-21 00:10:33,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:33,066 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:33,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:10:33,066 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:10:33,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:33,067 INFO L85 PathProgramCache]: Analyzing trace with hash -398230191, now seen corresponding path program 1 times [2021-11-21 00:10:33,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:33,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366750670] [2021-11-21 00:10:33,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:33,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-21 00:10:33,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:33,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366750670] [2021-11-21 00:10:33,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366750670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:33,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:33,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:10:33,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811225626] [2021-11-21 00:10:33,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:33,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:10:33,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:33,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:10:33,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:10:33,624 INFO L87 Difference]: Start difference. First operand 5348 states and 7691 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 00:10:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:43,904 INFO L93 Difference]: Finished difference Result 16146 states and 23097 transitions. [2021-11-21 00:10:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:10:43,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2021-11-21 00:10:43,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:44,012 INFO L225 Difference]: With dead ends: 16146 [2021-11-21 00:10:44,012 INFO L226 Difference]: Without dead ends: 10811 [2021-11-21 00:10:44,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:10:44,056 INFO L933 BasicCegarLoop]: 3298 mSDtfsCounter, 6087 mSDsluCounter, 6449 mSDsCounter, 0 mSdLazyCounter, 3450 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6221 SdHoareTripleChecker+Valid, 8655 SdHoareTripleChecker+Invalid, 4386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 3450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:44,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6221 Valid, 8655 Invalid, 4386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [936 Valid, 3450 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2021-11-21 00:10:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10811 states. [2021-11-21 00:10:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10811 to 10759. [2021-11-21 00:10:44,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10759 states, 6471 states have (on average 1.301808066759388) internal successors, (8424), 6799 states have internal predecessors, (8424), 3450 states have call successors, (3450), 839 states have call predecessors, (3450), 834 states have return successors, (3446), 3294 states have call predecessors, (3446), 3446 states have call successors, (3446) [2021-11-21 00:10:44,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10759 states to 10759 states and 15320 transitions. [2021-11-21 00:10:44,830 INFO L78 Accepts]: Start accepts. Automaton has 10759 states and 15320 transitions. Word has length 84 [2021-11-21 00:10:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:44,831 INFO L470 AbstractCegarLoop]: Abstraction has 10759 states and 15320 transitions. [2021-11-21 00:10:44,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 00:10:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 10759 states and 15320 transitions. [2021-11-21 00:10:44,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-21 00:10:44,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:44,835 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:44,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:10:44,836 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:10:44,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:44,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1896849701, now seen corresponding path program 1 times [2021-11-21 00:10:44,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:44,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430761011] [2021-11-21 00:10:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:44,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-21 00:10:45,428 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:45,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430761011] [2021-11-21 00:10:45,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430761011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:45,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:45,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:10:45,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806065937] [2021-11-21 00:10:45,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:45,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:10:45,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:45,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:10:45,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:10:45,431 INFO L87 Difference]: Start difference. First operand 10759 states and 15320 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 00:10:49,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:49,159 INFO L93 Difference]: Finished difference Result 26684 states and 37829 transitions. [2021-11-21 00:10:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:10:49,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2021-11-21 00:10:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:49,287 INFO L225 Difference]: With dead ends: 26684 [2021-11-21 00:10:49,287 INFO L226 Difference]: Without dead ends: 15938 [2021-11-21 00:10:49,354 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 [2021-11-21 00:10:49,358 INFO L933 BasicCegarLoop]: 2856 mSDtfsCounter, 2449 mSDsluCounter, 2558 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:49,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2449 Valid, 5082 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-21 00:10:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15938 states. [2021-11-21 00:10:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15938 to 15890. [2021-11-21 00:10:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15890 states, 9552 states have (on average 1.2934463986599665) internal successors, (12355), 10012 states have internal predecessors, (12355), 5044 states have call successors, (5044), 1307 states have call predecessors, (5044), 1290 states have return successors, (5044), 4816 states have call predecessors, (5044), 5040 states have call successors, (5044) [2021-11-21 00:10:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15890 states to 15890 states and 22443 transitions. [2021-11-21 00:10:50,165 INFO L78 Accepts]: Start accepts. Automaton has 15890 states and 22443 transitions. Word has length 91 [2021-11-21 00:10:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:50,166 INFO L470 AbstractCegarLoop]: Abstraction has 15890 states and 22443 transitions. [2021-11-21 00:10:50,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 00:10:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 15890 states and 22443 transitions. [2021-11-21 00:10:50,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-21 00:10:50,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:50,176 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:50,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:10:50,176 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:10:50,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:50,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1658384968, now seen corresponding path program 1 times [2021-11-21 00:10:50,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:50,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947029628] [2021-11-21 00:10:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:50,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-21 00:10:50,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:50,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947029628] [2021-11-21 00:10:50,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947029628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:50,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:50,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:10:50,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445698957] [2021-11-21 00:10:50,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:50,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:10:50,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:50,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:10:50,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:10:50,831 INFO L87 Difference]: Start difference. First operand 15890 states and 22443 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-21 00:10:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:54,681 INFO L93 Difference]: Finished difference Result 15896 states and 22448 transitions. [2021-11-21 00:10:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:10:54,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 123 [2021-11-21 00:10:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:54,765 INFO L225 Difference]: With dead ends: 15896 [2021-11-21 00:10:54,765 INFO L226 Difference]: Without dead ends: 15894 [2021-11-21 00:10:54,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:10:54,778 INFO L933 BasicCegarLoop]: 2286 mSDtfsCounter, 2601 mSDsluCounter, 5260 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2607 SdHoareTripleChecker+Valid, 6850 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:54,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2607 Valid, 6850 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 00:10:54,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15894 states. [2021-11-21 00:10:55,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15894 to 15894. [2021-11-21 00:10:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15894 states, 9555 states have (on average 1.2933542647828362) internal successors, (12358), 10015 states have internal predecessors, (12358), 5044 states have call successors, (5044), 1308 states have call predecessors, (5044), 1291 states have return successors, (5044), 4816 states have call predecessors, (5044), 5040 states have call successors, (5044) [2021-11-21 00:10:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15894 states to 15894 states and 22446 transitions. [2021-11-21 00:10:55,599 INFO L78 Accepts]: Start accepts. Automaton has 15894 states and 22446 transitions. Word has length 123 [2021-11-21 00:10:55,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:55,601 INFO L470 AbstractCegarLoop]: Abstraction has 15894 states and 22446 transitions. [2021-11-21 00:10:55,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-21 00:10:55,602 INFO L276 IsEmpty]: Start isEmpty. Operand 15894 states and 22446 transitions. [2021-11-21 00:10:55,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-21 00:10:55,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:55,606 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 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] [2021-11-21 00:10:55,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:10:55,607 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:10:55,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:55,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1365861904, now seen corresponding path program 1 times [2021-11-21 00:10:55,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:55,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217377598] [2021-11-21 00:10:55,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:55,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2021-11-21 00:10:56,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:56,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217377598] [2021-11-21 00:10:56,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217377598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:56,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:56,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:10:56,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188633474] [2021-11-21 00:10:56,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:56,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:10:56,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:56,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:10:56,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:10:56,216 INFO L87 Difference]: Start difference. First operand 15894 states and 22446 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 00:11:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:00,343 INFO L93 Difference]: Finished difference Result 15900 states and 22451 transitions. [2021-11-21 00:11:00,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:11:00,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2021-11-21 00:11:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:00,424 INFO L225 Difference]: With dead ends: 15900 [2021-11-21 00:11:00,424 INFO L226 Difference]: Without dead ends: 15898 [2021-11-21 00:11:00,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:11:00,437 INFO L933 BasicCegarLoop]: 2289 mSDtfsCounter, 2595 mSDsluCounter, 5260 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 6853 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:00,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2600 Valid, 6853 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-21 00:11:00,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15898 states. [2021-11-21 00:11:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15898 to 15898. [2021-11-21 00:11:01,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15898 states, 9558 states have (on average 1.2932621887424147) internal successors, (12361), 10018 states have internal predecessors, (12361), 5044 states have call successors, (5044), 1309 states have call predecessors, (5044), 1292 states have return successors, (5044), 4816 states have call predecessors, (5044), 5040 states have call successors, (5044) [2021-11-21 00:11:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15898 states to 15898 states and 22449 transitions. [2021-11-21 00:11:01,505 INFO L78 Accepts]: Start accepts. Automaton has 15898 states and 22449 transitions. Word has length 131 [2021-11-21 00:11:01,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:01,506 INFO L470 AbstractCegarLoop]: Abstraction has 15898 states and 22449 transitions. [2021-11-21 00:11:01,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 00:11:01,506 INFO L276 IsEmpty]: Start isEmpty. Operand 15898 states and 22449 transitions. [2021-11-21 00:11:01,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-21 00:11:01,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:01,514 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:11:01,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:11:01,514 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:11:01,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:01,515 INFO L85 PathProgramCache]: Analyzing trace with hash -963294740, now seen corresponding path program 1 times [2021-11-21 00:11:01,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:01,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916813524] [2021-11-21 00:11:01,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:01,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-11-21 00:11:02,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:02,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916813524] [2021-11-21 00:11:02,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916813524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:02,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:02,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:11:02,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557352543] [2021-11-21 00:11:02,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:02,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:11:02,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:02,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:11:02,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:11:02,052 INFO L87 Difference]: Start difference. First operand 15898 states and 22449 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 00:11:09,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:09,470 INFO L93 Difference]: Finished difference Result 30862 states and 43804 transitions. [2021-11-21 00:11:09,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:11:09,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 136 [2021-11-21 00:11:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:09,649 INFO L225 Difference]: With dead ends: 30862 [2021-11-21 00:11:09,650 INFO L226 Difference]: Without dead ends: 30860 [2021-11-21 00:11:09,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:11:09,677 INFO L933 BasicCegarLoop]: 3008 mSDtfsCounter, 2579 mSDsluCounter, 9312 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2583 SdHoareTripleChecker+Valid, 11240 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:09,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2583 Valid, 11240 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-21 00:11:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30860 states. [2021-11-21 00:11:11,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30860 to 30818. [2021-11-21 00:11:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30818 states, 18519 states have (on average 1.29477833576327) internal successors, (23978), 19445 states have internal predecessors, (23978), 9832 states have call successors, (9832), 2531 states have call predecessors, (9832), 2463 states have return successors, (9948), 9325 states have call predecessors, (9948), 9824 states have call successors, (9948) [2021-11-21 00:11:11,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30818 states to 30818 states and 43758 transitions. [2021-11-21 00:11:11,468 INFO L78 Accepts]: Start accepts. Automaton has 30818 states and 43758 transitions. Word has length 136 [2021-11-21 00:11:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:11,469 INFO L470 AbstractCegarLoop]: Abstraction has 30818 states and 43758 transitions. [2021-11-21 00:11:11,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-21 00:11:11,470 INFO L276 IsEmpty]: Start isEmpty. Operand 30818 states and 43758 transitions. [2021-11-21 00:11:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-21 00:11:11,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:11,477 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 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] [2021-11-21 00:11:11,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:11:11,477 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:11:11,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:11,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1267617584, now seen corresponding path program 1 times [2021-11-21 00:11:11,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:11,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140557150] [2021-11-21 00:11:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:11,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:12,259 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-21 00:11:12,259 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:12,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140557150] [2021-11-21 00:11:12,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140557150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:12,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:12,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:11:12,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769036719] [2021-11-21 00:11:12,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:12,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:11:12,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:12,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:11:12,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:11:12,262 INFO L87 Difference]: Start difference. First operand 30818 states and 43758 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 00:11:18,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:18,950 INFO L93 Difference]: Finished difference Result 60118 states and 86530 transitions. [2021-11-21 00:11:18,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:11:18,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2021-11-21 00:11:18,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:19,413 INFO L225 Difference]: With dead ends: 60118 [2021-11-21 00:11:19,413 INFO L226 Difference]: Without dead ends: 60116 [2021-11-21 00:11:19,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:11:19,434 INFO L933 BasicCegarLoop]: 2961 mSDtfsCounter, 2549 mSDsluCounter, 9279 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2552 SdHoareTripleChecker+Valid, 11176 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:19,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2552 Valid, 11176 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-21 00:11:19,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60116 states. [2021-11-21 00:11:22,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60116 to 60088. [2021-11-21 00:11:22,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60088 states, 36062 states have (on average 1.2946314680272863) internal successors, (46687), 37882 states have internal predecessors, (46687), 19156 states have call successors, (19156), 5002 states have call predecessors, (19156), 4866 states have return successors, (20660), 18123 states have call predecessors, (20660), 19140 states have call successors, (20660) [2021-11-21 00:11:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60088 states to 60088 states and 86503 transitions. [2021-11-21 00:11:23,374 INFO L78 Accepts]: Start accepts. Automaton has 60088 states and 86503 transitions. Word has length 141 [2021-11-21 00:11:23,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:23,377 INFO L470 AbstractCegarLoop]: Abstraction has 60088 states and 86503 transitions. [2021-11-21 00:11:23,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-21 00:11:23,378 INFO L276 IsEmpty]: Start isEmpty. Operand 60088 states and 86503 transitions. [2021-11-21 00:11:23,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-21 00:11:23,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:23,384 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 4, 4, 3, 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] [2021-11-21 00:11:23,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:11:23,384 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:11:23,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash 572306611, now seen corresponding path program 1 times [2021-11-21 00:11:23,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:23,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824988520] [2021-11-21 00:11:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:23,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-21 00:11:23,779 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:23,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824988520] [2021-11-21 00:11:23,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824988520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:23,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:23,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:11:23,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157518997] [2021-11-21 00:11:23,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:23,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:11:23,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:23,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:11:23,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:11:23,783 INFO L87 Difference]: Start difference. First operand 60088 states and 86503 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-21 00:11:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:38,370 INFO L93 Difference]: Finished difference Result 178896 states and 257689 transitions. [2021-11-21 00:11:38,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:11:38,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 138 [2021-11-21 00:11:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:38,975 INFO L225 Difference]: With dead ends: 178896 [2021-11-21 00:11:38,975 INFO L226 Difference]: Without dead ends: 119272 [2021-11-21 00:11:39,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:11:39,215 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 5326 mSDsluCounter, 5707 mSDsCounter, 0 mSdLazyCounter, 4093 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5455 SdHoareTripleChecker+Valid, 9749 SdHoareTripleChecker+Invalid, 4244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 4093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:39,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5455 Valid, 9749 Invalid, 4244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 4093 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2021-11-21 00:11:39,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119272 states. [2021-11-21 00:11:44,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119272 to 118836. [2021-11-21 00:11:44,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118836 states, 71248 states have (on average 1.295124073658208) internal successors, (92275), 74924 states have internal predecessors, (92275), 37944 states have call successors, (37944), 9908 states have call predecessors, (37944), 9640 states have return successors, (40968), 35835 states have call predecessors, (40968), 37928 states have call successors, (40968) [2021-11-21 00:11:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118836 states to 118836 states and 171187 transitions. [2021-11-21 00:11:45,569 INFO L78 Accepts]: Start accepts. Automaton has 118836 states and 171187 transitions. Word has length 138 [2021-11-21 00:11:45,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:45,570 INFO L470 AbstractCegarLoop]: Abstraction has 118836 states and 171187 transitions. [2021-11-21 00:11:45,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-21 00:11:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand 118836 states and 171187 transitions. [2021-11-21 00:11:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-21 00:11:45,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:45,579 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:11:45,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:11:45,580 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:11:45,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash -261790998, now seen corresponding path program 1 times [2021-11-21 00:11:45,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:45,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867011501] [2021-11-21 00:11:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:45,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-11-21 00:11:46,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:46,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867011501] [2021-11-21 00:11:46,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867011501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:46,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:46,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:11:46,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395412956] [2021-11-21 00:11:46,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:46,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:11:46,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:46,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:11:46,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:11:46,183 INFO L87 Difference]: Start difference. First operand 118836 states and 171187 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 00:11:53,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:53,935 INFO L93 Difference]: Finished difference Result 118854 states and 171204 transitions. [2021-11-21 00:11:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:11:53,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 147 [2021-11-21 00:11:53,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:54,512 INFO L225 Difference]: With dead ends: 118854 [2021-11-21 00:11:54,513 INFO L226 Difference]: Without dead ends: 118852 [2021-11-21 00:11:54,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:11:54,558 INFO L933 BasicCegarLoop]: 2289 mSDtfsCounter, 2595 mSDsluCounter, 5260 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2597 SdHoareTripleChecker+Valid, 6853 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:54,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2597 Valid, 6853 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-21 00:11:54,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118852 states. [2021-11-21 00:11:59,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118852 to 118852. [2021-11-21 00:12:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118852 states, 71260 states have (on average 1.295074375526242) internal successors, (92287), 74936 states have internal predecessors, (92287), 37944 states have call successors, (37944), 9912 states have call predecessors, (37944), 9644 states have return successors, (40968), 35835 states have call predecessors, (40968), 37928 states have call successors, (40968) [2021-11-21 00:12:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118852 states to 118852 states and 171199 transitions. [2021-11-21 00:12:00,669 INFO L78 Accepts]: Start accepts. Automaton has 118852 states and 171199 transitions. Word has length 147 [2021-11-21 00:12:00,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:00,669 INFO L470 AbstractCegarLoop]: Abstraction has 118852 states and 171199 transitions. [2021-11-21 00:12:00,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 00:12:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 118852 states and 171199 transitions. [2021-11-21 00:12:00,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-21 00:12:00,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:00,679 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:12:00,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:12:00,679 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-21 00:12:00,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:00,680 INFO L85 PathProgramCache]: Analyzing trace with hash 571113812, now seen corresponding path program 1 times [2021-11-21 00:12:00,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:12:00,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610716129] [2021-11-21 00:12:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:00,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:12:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-11-21 00:12:01,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:12:01,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610716129] [2021-11-21 00:12:01,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610716129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:01,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:01,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:12:01,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443264240] [2021-11-21 00:12:01,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:01,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:12:01,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:12:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:12:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:12:01,810 INFO L87 Difference]: Start difference. First operand 118852 states and 171199 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)