./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.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_4af53060-cfbb-42b5-bc9b-261ed523270f/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/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_4af53060-cfbb-42b5-bc9b-261ed523270f/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/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_4af53060-cfbb-42b5-bc9b-261ed523270f/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 08fd1f25b7d22203947cf6c4ad8cac3aedaa56ca5536c5ddc05b18633d46ecf5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:38:21,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:38:21,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:38:21,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:38:21,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:38:21,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:38:21,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:38:21,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:38:21,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:38:21,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:38:21,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:38:21,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:38:21,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:38:21,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:38:21,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:38:21,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:38:21,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:38:21,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:38:21,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:38:21,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:38:21,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:38:21,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:38:21,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:38:21,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:38:21,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:38:21,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:38:21,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:38:21,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:38:21,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:38:21,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:38:21,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:38:21,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:38:21,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:38:21,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:38:21,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:38:21,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:38:21,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:38:21,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:38:21,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:38:21,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:38:21,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:38:21,549 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:38:21,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:38:21,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:38:21,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:38:21,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:38:21,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:38:21,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:38:21,576 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:38:21,576 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:38:21,576 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:38:21,577 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:38:21,577 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:38:21,577 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:38:21,577 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:38:21,578 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:38:21,578 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:38:21,578 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:38:21,578 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:38:21,579 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:38:21,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:38:21,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:38:21,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:38:21,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:38:21,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:38:21,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:38:21,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:38:21,581 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:38:21,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:38:21,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:38:21,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:38:21,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:38:21,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:38:21,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:38:21,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:38:21,583 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:38:21,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:38:21,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:38:21,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:38:21,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:38:21,584 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_4af53060-cfbb-42b5-bc9b-261ed523270f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08fd1f25b7d22203947cf6c4ad8cac3aedaa56ca5536c5ddc05b18633d46ecf5 [2021-11-20 23:38:21,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:38:21,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:38:21,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:38:21,880 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:38:21,882 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:38:21,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i [2021-11-20 23:38:21,961 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/bin/utaipan-TEXQjIfE4P/data/88838b8a6/d23c06efda534a6688fd8197d56b2bb9/FLAGe1155f240 [2021-11-20 23:38:22,964 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:38:22,965 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i [2021-11-20 23:38:23,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/bin/utaipan-TEXQjIfE4P/data/88838b8a6/d23c06efda534a6688fd8197d56b2bb9/FLAGe1155f240 [2021-11-20 23:38:23,312 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/bin/utaipan-TEXQjIfE4P/data/88838b8a6/d23c06efda534a6688fd8197d56b2bb9 [2021-11-20 23:38:23,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:38:23,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:38:23,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:38:23,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:38:23,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:38:23,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:23" (1/1) ... [2021-11-20 23:38:23,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f83466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:23, skipping insertion in model container [2021-11-20 23:38:23,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:23" (1/1) ... [2021-11-20 23:38:23,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:38:23,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:38:27,874 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_4af53060-cfbb-42b5-bc9b-261ed523270f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[470736,470749] [2021-11-20 23:38:27,877 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_4af53060-cfbb-42b5-bc9b-261ed523270f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[470902,470915] [2021-11-20 23:38:27,878 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_4af53060-cfbb-42b5-bc9b-261ed523270f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[471066,471079] [2021-11-20 23:38:27,878 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_4af53060-cfbb-42b5-bc9b-261ed523270f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[471231,471244] [2021-11-20 23:38:27,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:38:27,953 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:38:28,465 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_4af53060-cfbb-42b5-bc9b-261ed523270f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[470736,470749] [2021-11-20 23:38:28,465 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_4af53060-cfbb-42b5-bc9b-261ed523270f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[470902,470915] [2021-11-20 23:38:28,466 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_4af53060-cfbb-42b5-bc9b-261ed523270f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[471066,471079] [2021-11-20 23:38:28,466 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_4af53060-cfbb-42b5-bc9b-261ed523270f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i[471231,471244] [2021-11-20 23:38:28,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:38:28,729 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:38:28,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:28 WrapperNode [2021-11-20 23:38:28,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:38:28,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:38:28,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:38:28,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:38:28,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:28" (1/1) ... [2021-11-20 23:38:28,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:28" (1/1) ... [2021-11-20 23:38:29,153 INFO L137 Inliner]: procedures = 410, calls = 4510, calls flagged for inlining = 226, calls inlined = 200, statements flattened = 9274 [2021-11-20 23:38:29,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:38:29,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:38:29,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:38:29,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:38:29,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:28" (1/1) ... [2021-11-20 23:38:29,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:28" (1/1) ... [2021-11-20 23:38:29,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:28" (1/1) ... [2021-11-20 23:38:29,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:28" (1/1) ... [2021-11-20 23:38:29,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:28" (1/1) ... [2021-11-20 23:38:29,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:28" (1/1) ... [2021-11-20 23:38:29,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:28" (1/1) ... [2021-11-20 23:38:29,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:38:29,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:38:29,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:38:29,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:38:29,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:28" (1/1) ... [2021-11-20 23:38:29,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:38:29,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:38:29,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:38:29,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af53060-cfbb-42b5-bc9b-261ed523270f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:38:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2021-11-20 23:38:29,738 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2021-11-20 23:38:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-20 23:38:29,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-20 23:38:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2021-11-20 23:38:29,738 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2021-11-20 23:38:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2021-11-20 23:38:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2021-11-20 23:38:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:38:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:38:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2021-11-20 23:38:29,740 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2021-11-20 23:38:29,740 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2021-11-20 23:38:29,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2021-11-20 23:38:29,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:38:29,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:38:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2021-11-20 23:38:29,741 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2021-11-20 23:38:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2021-11-20 23:38:29,741 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2021-11-20 23:38:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2021-11-20 23:38:29,741 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2021-11-20 23:38:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2021-11-20 23:38:29,742 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2021-11-20 23:38:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2021-11-20 23:38:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2021-11-20 23:38:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2021-11-20 23:38:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2021-11-20 23:38:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2021-11-20 23:38:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2021-11-20 23:38:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:38:29,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:38:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-11-20 23:38:29,744 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-11-20 23:38:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 23:38:29,745 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 23:38:29,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:38:29,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:38:29,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-20 23:38:29,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-20 23:38:29,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:38:29,746 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2021-11-20 23:38:29,746 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2021-11-20 23:38:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2021-11-20 23:38:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2021-11-20 23:38:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2021-11-20 23:38:29,749 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2021-11-20 23:38:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-20 23:38:29,749 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-20 23:38:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 23:38:29,749 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 23:38:29,750 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2021-11-20 23:38:29,750 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2021-11-20 23:38:29,750 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2021-11-20 23:38:29,751 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2021-11-20 23:38:29,751 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2021-11-20 23:38:29,751 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2021-11-20 23:38:29,751 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-20 23:38:29,752 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-20 23:38:29,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:38:29,752 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2021-11-20 23:38:29,752 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2021-11-20 23:38:29,752 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2021-11-20 23:38:29,753 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2021-11-20 23:38:29,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:38:29,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:38:29,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:38:29,754 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2021-11-20 23:38:29,754 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2021-11-20 23:38:29,754 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2021-11-20 23:38:29,755 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2021-11-20 23:38:29,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:38:29,755 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2021-11-20 23:38:29,755 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2021-11-20 23:38:29,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:38:29,755 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:38:29,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:38:29,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:38:29,757 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2021-11-20 23:38:29,757 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2021-11-20 23:38:29,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_command_lock_of_rndis_wlan_private [2021-11-20 23:38:29,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_command_lock_of_rndis_wlan_private [2021-11-20 23:38:29,757 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2021-11-20 23:38:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2021-11-20 23:38:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2021-11-20 23:38:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2021-11-20 23:38:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:38:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2021-11-20 23:38:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2021-11-20 23:38:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2021-11-20 23:38:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2021-11-20 23:38:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:38:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:38:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2021-11-20 23:38:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2021-11-20 23:38:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-20 23:38:29,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-20 23:38:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:38:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2021-11-20 23:38:29,762 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2021-11-20 23:38:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:38:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:38:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2021-11-20 23:38:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2021-11-20 23:38:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:38:29,765 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2021-11-20 23:38:29,769 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2021-11-20 23:38:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2021-11-20 23:38:29,769 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2021-11-20 23:38:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:38:29,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:38:29,770 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2021-11-20 23:38:29,771 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2021-11-20 23:38:29,771 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2021-11-20 23:38:29,771 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2021-11-20 23:38:29,777 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-20 23:38:29,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-20 23:38:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2021-11-20 23:38:29,778 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2021-11-20 23:38:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-20 23:38:29,778 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-20 23:38:29,778 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 23:38:29,779 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 23:38:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:38:29,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:38:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 23:38:29,779 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 23:38:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-20 23:38:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-20 23:38:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:38:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:38:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:38:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:38:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-20 23:38:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-20 23:38:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-20 23:38:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-20 23:38:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2021-11-20 23:38:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2021-11-20 23:38:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-20 23:38:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-20 23:38:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2021-11-20 23:38:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2021-11-20 23:38:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-20 23:38:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-20 23:38:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2021-11-20 23:38:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2021-11-20 23:38:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2021-11-20 23:38:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2021-11-20 23:38:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2021-11-20 23:38:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2021-11-20 23:38:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2021-11-20 23:38:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2021-11-20 23:38:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:38:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:38:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-20 23:38:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-20 23:38:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-20 23:38:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-20 23:38:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:38:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:38:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:38:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2021-11-20 23:38:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2021-11-20 23:38:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:38:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2021-11-20 23:38:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2021-11-20 23:38:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2021-11-20 23:38:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2021-11-20 23:38:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2021-11-20 23:38:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2021-11-20 23:38:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-20 23:38:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-20 23:38:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:38:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2021-11-20 23:38:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2021-11-20 23:38:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 23:38:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 23:38:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2021-11-20 23:38:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2021-11-20 23:38:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:38:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:38:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2021-11-20 23:38:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2021-11-20 23:38:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:38:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:38:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-20 23:38:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-20 23:38:29,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2021-11-20 23:38:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2021-11-20 23:38:29,791 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-20 23:38:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-20 23:38:29,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 23:38:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 23:38:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2021-11-20 23:38:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2021-11-20 23:38:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-20 23:38:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-20 23:38:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2021-11-20 23:38:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2021-11-20 23:38:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2021-11-20 23:38:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2021-11-20 23:38:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:38:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:38:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-20 23:38:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-20 23:38:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2021-11-20 23:38:29,794 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2021-11-20 23:38:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2021-11-20 23:38:29,794 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2021-11-20 23:38:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2021-11-20 23:38:29,794 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2021-11-20 23:38:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:38:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2021-11-20 23:38:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2021-11-20 23:38:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:38:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:38:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_command_lock_of_rndis_wlan_private [2021-11-20 23:38:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_command_lock_of_rndis_wlan_private [2021-11-20 23:38:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2021-11-20 23:38:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2021-11-20 23:38:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-20 23:38:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-20 23:38:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 23:38:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 23:38:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2021-11-20 23:38:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2021-11-20 23:38:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:38:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:38:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-20 23:38:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-20 23:38:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2021-11-20 23:38:29,798 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2021-11-20 23:38:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2021-11-20 23:38:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2021-11-20 23:38:29,803 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2021-11-20 23:38:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2021-11-20 23:38:29,803 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2021-11-20 23:38:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2021-11-20 23:38:29,803 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2021-11-20 23:38:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2021-11-20 23:38:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-20 23:38:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:38:29,806 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-20 23:38:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-20 23:38:29,806 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2021-11-20 23:38:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2021-11-20 23:38:29,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:38:29,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:38:31,012 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:38:31,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:38:31,445 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:38:51,192 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:38:51,504 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:38:52,945 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:38:52,945 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:38:52,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:38:52 BoogieIcfgContainer [2021-11-20 23:38:52,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:38:52,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:38:52,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:38:52,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:38:52,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:38:23" (1/3) ... [2021-11-20 23:38:52,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345841df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:38:52, skipping insertion in model container [2021-11-20 23:38:52,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:28" (2/3) ... [2021-11-20 23:38:52,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345841df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:38:52, skipping insertion in model container [2021-11-20 23:38:52,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:38:52" (3/3) ... [2021-11-20 23:38:52,964 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rndis_wlan.cil.i [2021-11-20 23:38:52,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:38:52,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:38:53,051 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:38:53,066 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 [2021-11-20 23:38:53,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:38:53,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 2034 states, 1236 states have (on average 1.3122977346278317) internal successors, (1622), 1240 states have internal predecessors, (1622), 680 states have call successors, (680), 116 states have call predecessors, (680), 115 states have return successors, (672), 672 states have call predecessors, (672), 672 states have call successors, (672) [2021-11-20 23:38:53,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-11-20 23:38:53,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:53,182 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:53,182 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 1 more)] === [2021-11-20 23:38:53,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:53,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1717882288, now seen corresponding path program 1 times [2021-11-20 23:38:53,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:53,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432439957] [2021-11-20 23:38:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:53,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2021-11-20 23:38:54,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:54,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432439957] [2021-11-20 23:38:54,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432439957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:54,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:54,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:38:54,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897587833] [2021-11-20 23:38:54,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:54,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:38:54,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:54,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:38:54,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:38:54,333 INFO L87 Difference]: Start difference. First operand has 2034 states, 1236 states have (on average 1.3122977346278317) internal successors, (1622), 1240 states have internal predecessors, (1622), 680 states have call successors, (680), 116 states have call predecessors, (680), 115 states have return successors, (672), 672 states have call predecessors, (672), 672 states have call successors, (672) Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-20 23:38:58,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:00,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:02,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:04,408 INFO L93 Difference]: Finished difference Result 5872 states and 8877 transitions. [2021-11-20 23:39:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:04,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 384 [2021-11-20 23:39:04,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:04,464 INFO L225 Difference]: With dead ends: 5872 [2021-11-20 23:39:04,464 INFO L226 Difference]: Without dead ends: 3899 [2021-11-20 23:39:04,486 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 [2021-11-20 23:39:04,489 INFO L933 BasicCegarLoop]: 3194 mSDtfsCounter, 2767 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2774 SdHoareTripleChecker+Valid, 5676 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:04,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2774 Valid, 5676 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 910 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2021-11-20 23:39:04,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2021-11-20 23:39:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3895. [2021-11-20 23:39:04,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3895 states, 2388 states have (on average 1.3086264656616415) internal successors, (3125), 2395 states have internal predecessors, (3125), 1278 states have call successors, (1278), 227 states have call predecessors, (1278), 226 states have return successors, (1281), 1274 states have call predecessors, (1281), 1274 states have call successors, (1281) [2021-11-20 23:39:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 5684 transitions. [2021-11-20 23:39:04,893 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 5684 transitions. Word has length 384 [2021-11-20 23:39:04,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:04,900 INFO L470 AbstractCegarLoop]: Abstraction has 3895 states and 5684 transitions. [2021-11-20 23:39:04,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-20 23:39:04,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 5684 transitions. [2021-11-20 23:39:04,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-11-20 23:39:04,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:04,923 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:04,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:39:04,924 INFO L402 AbstractCegarLoop]: === Iteration 2 === 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 1 more)] === [2021-11-20 23:39:04,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash -255544321, now seen corresponding path program 1 times [2021-11-20 23:39:04,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:04,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180774126] [2021-11-20 23:39:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:04,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-20 23:39:05,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:05,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180774126] [2021-11-20 23:39:05,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180774126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:05,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:05,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:39:05,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278006624] [2021-11-20 23:39:05,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:05,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:05,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:05,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:05,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:05,501 INFO L87 Difference]: Start difference. First operand 3895 states and 5684 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-20 23:39:08,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:11,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:13,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:15,237 INFO L93 Difference]: Finished difference Result 9562 states and 13936 transitions. [2021-11-20 23:39:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:15,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 403 [2021-11-20 23:39:15,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:15,296 INFO L225 Difference]: With dead ends: 9562 [2021-11-20 23:39:15,296 INFO L226 Difference]: Without dead ends: 5740 [2021-11-20 23:39:15,320 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 [2021-11-20 23:39:15,322 INFO L933 BasicCegarLoop]: 3174 mSDtfsCounter, 2725 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2732 SdHoareTripleChecker+Valid, 5651 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:15,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2732 Valid, 5651 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2021-11-20 23:39:15,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5740 states. [2021-11-20 23:39:15,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5740 to 5721. [2021-11-20 23:39:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5721 states, 3520 states have (on average 1.3068181818181819) internal successors, (4600), 3533 states have internal predecessors, (4600), 1856 states have call successors, (1856), 343 states have call predecessors, (1856), 342 states have return successors, (1866), 1847 states have call predecessors, (1866), 1852 states have call successors, (1866) [2021-11-20 23:39:15,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 8322 transitions. [2021-11-20 23:39:15,685 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 8322 transitions. Word has length 403 [2021-11-20 23:39:15,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:15,687 INFO L470 AbstractCegarLoop]: Abstraction has 5721 states and 8322 transitions. [2021-11-20 23:39:15,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-20 23:39:15,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 8322 transitions. [2021-11-20 23:39:15,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-20 23:39:15,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:15,700 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:15,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:39:15,701 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 1 more)] === [2021-11-20 23:39:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:15,702 INFO L85 PathProgramCache]: Analyzing trace with hash -829006890, now seen corresponding path program 1 times [2021-11-20 23:39:15,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:15,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536552765] [2021-11-20 23:39:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:15,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-20 23:39:16,113 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:16,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536552765] [2021-11-20 23:39:16,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536552765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:16,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:16,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:39:16,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715387966] [2021-11-20 23:39:16,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:16,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:16,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:16,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:16,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:16,118 INFO L87 Difference]: Start difference. First operand 5721 states and 8322 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-20 23:39:19,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:21,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:23,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:25,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:25,869 INFO L93 Difference]: Finished difference Result 15040 states and 21860 transitions. [2021-11-20 23:39:25,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:25,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 402 [2021-11-20 23:39:25,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:25,962 INFO L225 Difference]: With dead ends: 15040 [2021-11-20 23:39:25,962 INFO L226 Difference]: Without dead ends: 9392 [2021-11-20 23:39:26,001 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 [2021-11-20 23:39:26,005 INFO L933 BasicCegarLoop]: 3213 mSDtfsCounter, 2726 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2733 SdHoareTripleChecker+Valid, 5690 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:26,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2733 Valid, 5690 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 924 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2021-11-20 23:39:26,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9392 states. [2021-11-20 23:39:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9392 to 9373. [2021-11-20 23:39:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9373 states, 5784 states have (on average 1.3053250345781466) internal successors, (7550), 5809 states have internal predecessors, (7550), 3012 states have call successors, (3012), 575 states have call predecessors, (3012), 574 states have return successors, (3036), 2993 states have call predecessors, (3036), 3008 states have call successors, (3036) [2021-11-20 23:39:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9373 states to 9373 states and 13598 transitions. [2021-11-20 23:39:26,810 INFO L78 Accepts]: Start accepts. Automaton has 9373 states and 13598 transitions. Word has length 402 [2021-11-20 23:39:26,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:26,811 INFO L470 AbstractCegarLoop]: Abstraction has 9373 states and 13598 transitions. [2021-11-20 23:39:26,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-20 23:39:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 9373 states and 13598 transitions. [2021-11-20 23:39:26,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-20 23:39:26,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:26,825 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:26,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:39:26,825 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 1 more)] === [2021-11-20 23:39:26,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1920327043, now seen corresponding path program 1 times [2021-11-20 23:39:26,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:26,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120294116] [2021-11-20 23:39:26,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:26,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2021-11-20 23:39:27,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:27,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120294116] [2021-11-20 23:39:27,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120294116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:27,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:27,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:39:27,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924225841] [2021-11-20 23:39:27,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:27,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:27,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:27,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:27,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:27,228 INFO L87 Difference]: Start difference. First operand 9373 states and 13598 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-20 23:39:30,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:33,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:35,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:36,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:36,697 INFO L93 Difference]: Finished difference Result 25583 states and 37111 transitions. [2021-11-20 23:39:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:36,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 404 [2021-11-20 23:39:36,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:36,815 INFO L225 Difference]: With dead ends: 25583 [2021-11-20 23:39:36,815 INFO L226 Difference]: Without dead ends: 16283 [2021-11-20 23:39:36,871 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 [2021-11-20 23:39:36,872 INFO L933 BasicCegarLoop]: 3431 mSDtfsCounter, 2724 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2731 SdHoareTripleChecker+Valid, 5908 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:36,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2731 Valid, 5908 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 993 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2021-11-20 23:39:36,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16283 states. [2021-11-20 23:39:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16283 to 16264. [2021-11-20 23:39:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16264 states, 10061 states have (on average 1.30374714243117) internal successors, (13117), 10110 states have internal predecessors, (13117), 5192 states have call successors, (5192), 1009 states have call predecessors, (5192), 1008 states have return successors, (5244), 5153 states have call predecessors, (5244), 5188 states have call successors, (5244) [2021-11-20 23:39:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16264 states to 16264 states and 23553 transitions. [2021-11-20 23:39:38,045 INFO L78 Accepts]: Start accepts. Automaton has 16264 states and 23553 transitions. Word has length 404 [2021-11-20 23:39:38,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:38,046 INFO L470 AbstractCegarLoop]: Abstraction has 16264 states and 23553 transitions. [2021-11-20 23:39:38,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-20 23:39:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 16264 states and 23553 transitions. [2021-11-20 23:39:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-20 23:39:38,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:38,060 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:38,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:39:38,060 INFO L402 AbstractCegarLoop]: === Iteration 5 === 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 1 more)] === [2021-11-20 23:39:38,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:38,061 INFO L85 PathProgramCache]: Analyzing trace with hash -180409085, now seen corresponding path program 1 times [2021-11-20 23:39:38,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:38,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419819383] [2021-11-20 23:39:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:38,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5114 trivial. 0 not checked. [2021-11-20 23:39:38,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:38,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419819383] [2021-11-20 23:39:38,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419819383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:38,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:38,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:39:38,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852501359] [2021-11-20 23:39:38,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:38,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:38,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:38,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:38,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:38,493 INFO L87 Difference]: Start difference. First operand 16264 states and 23553 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-20 23:39:41,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:44,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:47,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:48,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:48,495 INFO L93 Difference]: Finished difference Result 47400 states and 68618 transitions. [2021-11-20 23:39:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:39:48,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 409 [2021-11-20 23:39:48,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:48,662 INFO L225 Difference]: With dead ends: 47400 [2021-11-20 23:39:48,662 INFO L226 Difference]: Without dead ends: 31209 [2021-11-20 23:39:48,732 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 [2021-11-20 23:39:48,732 INFO L933 BasicCegarLoop]: 3811 mSDtfsCounter, 2673 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2680 SdHoareTripleChecker+Valid, 6292 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:48,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2680 Valid, 6292 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1082 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2021-11-20 23:39:48,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31209 states. [2021-11-20 23:39:50,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31209 to 31174. [2021-11-20 23:39:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31174 states, 19332 states have (on average 1.3012621560107593) internal successors, (25156), 19446 states have internal predecessors, (25156), 9902 states have call successors, (9902), 1938 states have call predecessors, (9902), 1937 states have return successors, (9982), 9807 states have call predecessors, (9982), 9898 states have call successors, (9982) [2021-11-20 23:39:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31174 states to 31174 states and 45040 transitions. [2021-11-20 23:39:50,729 INFO L78 Accepts]: Start accepts. Automaton has 31174 states and 45040 transitions. Word has length 409 [2021-11-20 23:39:50,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:50,731 INFO L470 AbstractCegarLoop]: Abstraction has 31174 states and 45040 transitions. [2021-11-20 23:39:50,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-20 23:39:50,731 INFO L276 IsEmpty]: Start isEmpty. Operand 31174 states and 45040 transitions. [2021-11-20 23:39:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2021-11-20 23:39:50,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:50,746 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:50,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:39:50,746 INFO L402 AbstractCegarLoop]: === Iteration 6 === 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 1 more)] === [2021-11-20 23:39:50,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:50,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1739878271, now seen corresponding path program 1 times [2021-11-20 23:39:50,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:50,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653396987] [2021-11-20 23:39:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:50,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5114 trivial. 0 not checked. [2021-11-20 23:39:51,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:51,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653396987] [2021-11-20 23:39:51,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653396987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:51,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:51,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:39:51,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385315054] [2021-11-20 23:39:51,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:51,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:51,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:51,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:51,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:39:51,335 INFO L87 Difference]: Start difference. First operand 31174 states and 45040 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-20 23:39:55,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:57,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:00,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:01,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:01,365 INFO L93 Difference]: Finished difference Result 75094 states and 107903 transitions. [2021-11-20 23:40:01,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:40:01,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 415 [2021-11-20 23:40:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:01,648 INFO L225 Difference]: With dead ends: 75094 [2021-11-20 23:40:01,648 INFO L226 Difference]: Without dead ends: 43993 [2021-11-20 23:40:01,764 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 [2021-11-20 23:40:01,766 INFO L933 BasicCegarLoop]: 2976 mSDtfsCounter, 1589 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 5423 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:01,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 5423 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 954 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2021-11-20 23:40:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43993 states. [2021-11-20 23:40:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43993 to 43944. [2021-11-20 23:40:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43944 states, 27446 states have (on average 1.3022298331268674) internal successors, (35741), 27682 states have internal predecessors, (35741), 13428 states have call successors, (13428), 3068 states have call predecessors, (13428), 3067 states have return successors, (13592), 13209 states have call predecessors, (13592), 13424 states have call successors, (13592) [2021-11-20 23:40:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43944 states to 43944 states and 62761 transitions. [2021-11-20 23:40:04,349 INFO L78 Accepts]: Start accepts. Automaton has 43944 states and 62761 transitions. Word has length 415 [2021-11-20 23:40:04,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:04,350 INFO L470 AbstractCegarLoop]: Abstraction has 43944 states and 62761 transitions. [2021-11-20 23:40:04,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-20 23:40:04,350 INFO L276 IsEmpty]: Start isEmpty. Operand 43944 states and 62761 transitions. [2021-11-20 23:40:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-20 23:40:04,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:04,358 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:04,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:40:04,358 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 1 more)] === [2021-11-20 23:40:04,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:04,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1362348371, now seen corresponding path program 1 times [2021-11-20 23:40:04,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:04,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920329655] [2021-11-20 23:40:04,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:04,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2021-11-20 23:40:05,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:05,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920329655] [2021-11-20 23:40:05,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920329655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:05,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:05,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:40:05,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524319245] [2021-11-20 23:40:05,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:05,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:40:05,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:05,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:40:05,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:40:05,383 INFO L87 Difference]: Start difference. First operand 43944 states and 62761 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-20 23:40:10,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:12,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:15,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:18,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:18,655 INFO L93 Difference]: Finished difference Result 83135 states and 121561 transitions. [2021-11-20 23:40:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:40:18,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 432 [2021-11-20 23:40:18,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:19,154 INFO L225 Difference]: With dead ends: 83135 [2021-11-20 23:40:19,155 INFO L226 Difference]: Without dead ends: 83133 [2021-11-20 23:40:19,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:40:19,198 INFO L933 BasicCegarLoop]: 3237 mSDtfsCounter, 2833 mSDsluCounter, 10099 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 12043 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:19,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2836 Valid, 12043 Invalid, 1751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1745 Invalid, 3 Unknown, 0 Unchecked, 11.1s Time] [2021-11-20 23:40:19,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83133 states. [2021-11-20 23:40:22,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83133 to 82719. [2021-11-20 23:40:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82719 states, 51566 states have (on average 1.3033781949346468) internal successors, (67210), 52101 states have internal predecessors, (67210), 25404 states have call successors, (25404), 5779 states have call predecessors, (25404), 5746 states have return successors, (28408), 24870 states have call predecessors, (28408), 25396 states have call successors, (28408) [2021-11-20 23:40:23,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82719 states to 82719 states and 121022 transitions. [2021-11-20 23:40:23,822 INFO L78 Accepts]: Start accepts. Automaton has 82719 states and 121022 transitions. Word has length 432 [2021-11-20 23:40:23,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:23,823 INFO L470 AbstractCegarLoop]: Abstraction has 82719 states and 121022 transitions. [2021-11-20 23:40:23,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-20 23:40:23,824 INFO L276 IsEmpty]: Start isEmpty. Operand 82719 states and 121022 transitions. [2021-11-20 23:40:23,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-20 23:40:23,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:23,838 INFO L514 BasicCegarLoop]: trace histogram [38, 36, 36, 36, 36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:23,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:40:23,838 INFO L402 AbstractCegarLoop]: === Iteration 8 === 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 1 more)] === [2021-11-20 23:40:23,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:23,840 INFO L85 PathProgramCache]: Analyzing trace with hash -661814599, now seen corresponding path program 1 times [2021-11-20 23:40:23,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:23,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131398134] [2021-11-20 23:40:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:23,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5199 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5188 trivial. 0 not checked. [2021-11-20 23:40:24,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:24,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131398134] [2021-11-20 23:40:24,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131398134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:24,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:24,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:40:24,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291710275] [2021-11-20 23:40:24,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:24,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:40:24,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:24,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:40:24,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:40:24,166 INFO L87 Difference]: Start difference. First operand 82719 states and 121022 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-20 23:40:29,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:31,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:34,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:38,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:38,113 INFO L93 Difference]: Finished difference Result 202435 states and 296063 transitions. [2021-11-20 23:40:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:40:38,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 431 [2021-11-20 23:40:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:38,712 INFO L225 Difference]: With dead ends: 202435 [2021-11-20 23:40:38,712 INFO L226 Difference]: Without dead ends: 119789 [2021-11-20 23:40:39,082 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 [2021-11-20 23:40:39,084 INFO L933 BasicCegarLoop]: 4627 mSDtfsCounter, 2670 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2677 SdHoareTripleChecker+Valid, 7126 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:39,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2677 Valid, 7126 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1230 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2021-11-20 23:40:39,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119789 states. [2021-11-20 23:40:43,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119789 to 119697. [2021-11-20 23:40:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119697 states, 74598 states have (on average 1.3018713638435346) internal successors, (97117), 75384 states have internal predecessors, (97117), 36820 states have call successors, (36820), 8354 states have call predecessors, (36820), 8276 states have return successors, (41053), 36006 states have call predecessors, (41053), 36812 states have call successors, (41053) [2021-11-20 23:40:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119697 states to 119697 states and 174990 transitions. [2021-11-20 23:40:45,292 INFO L78 Accepts]: Start accepts. Automaton has 119697 states and 174990 transitions. Word has length 431 [2021-11-20 23:40:45,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:45,293 INFO L470 AbstractCegarLoop]: Abstraction has 119697 states and 174990 transitions. [2021-11-20 23:40:45,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-20 23:40:45,295 INFO L276 IsEmpty]: Start isEmpty. Operand 119697 states and 174990 transitions. [2021-11-20 23:40:45,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-11-20 23:40:45,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:45,301 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:45,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:40:45,303 INFO L402 AbstractCegarLoop]: === Iteration 9 === 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 1 more)] === [2021-11-20 23:40:45,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:45,303 INFO L85 PathProgramCache]: Analyzing trace with hash 801776709, now seen corresponding path program 1 times [2021-11-20 23:40:45,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:45,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671950600] [2021-11-20 23:40:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:45,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5376 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2021-11-20 23:40:45,931 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:45,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671950600] [2021-11-20 23:40:45,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671950600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:45,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:45,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:40:45,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886247529] [2021-11-20 23:40:45,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:45,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:40:45,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:45,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:40:45,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:40:45,935 INFO L87 Difference]: Start difference. First operand 119697 states and 174990 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-20 23:40:51,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:53,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:56,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:41:02,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:02,927 INFO L93 Difference]: Finished difference Result 239174 states and 349709 transitions. [2021-11-20 23:41:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:41:02,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 437 [2021-11-20 23:41:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:04,436 INFO L225 Difference]: With dead ends: 239174 [2021-11-20 23:41:04,436 INFO L226 Difference]: Without dead ends: 239172 [2021-11-20 23:41:04,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:41:04,560 INFO L933 BasicCegarLoop]: 3156 mSDtfsCounter, 2835 mSDsluCounter, 10003 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2844 SdHoareTripleChecker+Valid, 11856 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:04,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2844 Valid, 11856 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1751 Invalid, 3 Unknown, 0 Unchecked, 10.7s Time] [2021-11-20 23:41:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239172 states.