./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash adad89b7f673beaaf8bb114b70e1447440d8d3333aba6712cecf0b1e8decf472 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:00:23,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:00:23,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:00:23,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:00:23,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:00:23,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:00:23,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:00:23,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:00:23,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:00:23,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:00:23,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:00:23,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:00:23,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:00:23,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:00:23,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:00:23,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:00:23,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:00:23,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:00:23,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:00:23,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:00:23,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:00:23,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:00:23,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:00:23,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:00:23,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:00:23,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:00:23,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:00:23,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:00:23,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:00:23,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:00:23,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:00:23,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:00:23,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:00:23,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:00:23,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:00:23,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:00:23,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:00:23,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:00:23,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:00:23,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:00:23,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:00:23,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:00:23,583 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:00:23,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:00:23,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:00:23,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:00:23,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:00:23,591 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:00:23,591 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:00:23,592 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:00:23,592 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:00:23,592 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:00:23,593 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:00:23,593 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:00:23,594 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:00:23,594 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:00:23,594 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:00:23,594 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:00:23,594 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:00:23,595 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:00:23,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:00:23,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:00:23,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:00:23,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:00:23,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:00:23,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:00:23,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:00:23,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:00:23,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:00:23,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:00:23,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:00:23,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:00:23,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:00:23,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:00:23,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:00:23,601 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:00:23,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:00:23,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:00:23,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:00:23,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:00:23,602 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_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adad89b7f673beaaf8bb114b70e1447440d8d3333aba6712cecf0b1e8decf472 [2021-11-25 18:00:23,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:00:23,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:00:23,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:00:23,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:00:23,926 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:00:23,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2021-11-25 18:00:23,997 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/data/44bc7d8e0/3e56f78d6cd44e00b52e7b06285d9474/FLAGd158d6b2b [2021-11-25 18:00:24,829 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:00:24,829 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2021-11-25 18:00:24,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/data/44bc7d8e0/3e56f78d6cd44e00b52e7b06285d9474/FLAGd158d6b2b [2021-11-25 18:00:24,968 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/data/44bc7d8e0/3e56f78d6cd44e00b52e7b06285d9474 [2021-11-25 18:00:24,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:00:24,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:00:24,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:00:24,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:00:24,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:00:24,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:00:24" (1/1) ... [2021-11-25 18:00:24,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b281d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:24, skipping insertion in model container [2021-11-25 18:00:24,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:00:24" (1/1) ... [2021-11-25 18:00:24,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:00:25,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:00:27,689 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_5d7aa97b-650c-4408-a1a0-6605fe2c674b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295786,295799] [2021-11-25 18:00:27,692 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_5d7aa97b-650c-4408-a1a0-6605fe2c674b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295952,295965] [2021-11-25 18:00:27,693 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_5d7aa97b-650c-4408-a1a0-6605fe2c674b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296116,296129] [2021-11-25 18:00:27,693 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_5d7aa97b-650c-4408-a1a0-6605fe2c674b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296281,296294] [2021-11-25 18:00:27,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:00:27,798 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:00:28,188 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_5d7aa97b-650c-4408-a1a0-6605fe2c674b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295786,295799] [2021-11-25 18:00:28,188 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_5d7aa97b-650c-4408-a1a0-6605fe2c674b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295952,295965] [2021-11-25 18:00:28,189 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_5d7aa97b-650c-4408-a1a0-6605fe2c674b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296116,296129] [2021-11-25 18:00:28,189 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_5d7aa97b-650c-4408-a1a0-6605fe2c674b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296281,296294] [2021-11-25 18:00:28,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:00:28,452 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:00:28,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:28 WrapperNode [2021-11-25 18:00:28,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:00:28,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:00:28,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:00:28,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:00:28,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:28" (1/1) ... [2021-11-25 18:00:28,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:28" (1/1) ... [2021-11-25 18:00:28,777 INFO L137 Inliner]: procedures = 396, calls = 1613, calls flagged for inlining = 229, calls inlined = 191, statements flattened = 3922 [2021-11-25 18:00:28,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:00:28,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:00:28,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:00:28,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:00:28,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:28" (1/1) ... [2021-11-25 18:00:28,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:28" (1/1) ... [2021-11-25 18:00:28,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:28" (1/1) ... [2021-11-25 18:00:28,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:28" (1/1) ... [2021-11-25 18:00:28,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:28" (1/1) ... [2021-11-25 18:00:28,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:28" (1/1) ... [2021-11-25 18:00:28,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:28" (1/1) ... [2021-11-25 18:00:29,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:00:29,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:00:29,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:00:29,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:00:29,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:28" (1/1) ... [2021-11-25 18:00:29,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:00:29,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:00:29,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:00:29,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:00:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:00:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:00:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:00:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:00:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ks8851_driver_exit_14_2 [2021-11-25 18:00:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ks8851_driver_exit_14_2 [2021-11-25 18:00:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 18:00:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 18:00:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_resume [2021-11-25 18:00:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_resume [2021-11-25 18:00:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:00:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:00:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-11-25 18:00:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-11-25 18:00:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 18:00:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_stop [2021-11-25 18:00:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_stop [2021-11-25 18:00:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:00:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:00:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:00:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:00:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:00:29,083 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:00:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:00:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:00:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 18:00:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 18:00:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:00:29,084 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-11-25 18:00:29,084 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-11-25 18:00:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:00:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:00:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 18:00:29,085 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 18:00:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:00:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 18:00:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 18:00:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:00:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2021-11-25 18:00:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2021-11-25 18:00:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:00:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:00:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:00:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2021-11-25 18:00:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2021-11-25 18:00:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:00:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:00:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:00:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:00:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_ks8851_net [2021-11-25 18:00:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_ks8851_net [2021-11-25 18:00:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg8 [2021-11-25 18:00:29,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg8 [2021-11-25 18:00:29,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:00:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:00:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:00:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:00:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:00:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-25 18:00:29,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-25 18:00:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-25 18:00:29,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-25 18:00:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg16 [2021-11-25 18:00:29,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg16 [2021-11-25 18:00:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:00:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 18:00:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 18:00:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_probe [2021-11-25 18:00:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_probe [2021-11-25 18:00:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:00:29,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:00:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 18:00:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 18:00:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:00:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:00:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:00:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:00:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:00:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_put [2021-11-25 18:00:29,093 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_put [2021-11-25 18:00:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_ks8851_net [2021-11-25 18:00:29,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_ks8851_net [2021-11-25 18:00:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 18:00:29,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 18:00:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 18:00:29,094 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 18:00:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_write_mac_addr [2021-11-25 18:00:29,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_write_mac_addr [2021-11-25 18:00:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 18:00:29,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 18:00:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_suspend [2021-11-25 18:00:29,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_suspend [2021-11-25 18:00:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:00:29,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:00:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 18:00:29,095 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 18:00:29,095 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-25 18:00:29,096 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-25 18:00:29,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:00:29,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:00:29,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:00:29,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:00:29,096 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_open [2021-11-25 18:00:29,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_open [2021-11-25 18:00:29,097 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-11-25 18:00:29,097 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-11-25 18:00:29,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:00:29,097 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:00:29,097 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:00:29,098 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:00:29,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-25 18:00:29,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-25 18:00:29,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 18:00:29,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 18:00:29,098 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_rx_mode [2021-11-25 18:00:29,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_rx_mode [2021-11-25 18:00:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 18:00:29,099 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 18:00:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:00:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:00:29,099 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:00:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_powermode [2021-11-25 18:00:29,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_powermode [2021-11-25 18:00:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 18:00:29,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 18:00:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:00:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:00:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-25 18:00:29,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-25 18:00:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:00:29,101 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:00:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:00:29,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:00:29,101 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 18:00:29,102 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 18:00:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 18:00:29,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 18:00:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 18:00:29,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 18:00:29,102 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 18:00:29,102 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 18:00:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:00:29,103 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:00:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rx_1msg [2021-11-25 18:00:29,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rx_1msg [2021-11-25 18:00:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_get_eeprom_len [2021-11-25 18:00:29,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_get_eeprom_len [2021-11-25 18:00:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_soft_reset [2021-11-25 18:00:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_soft_reset [2021-11-25 18:00:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 18:00:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 18:00:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:00:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:00:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:00:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg [2021-11-25 18:00:29,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg [2021-11-25 18:00:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_nway_reset [2021-11-25 18:00:29,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_nway_reset [2021-11-25 18:00:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-11-25 18:00:29,105 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-11-25 18:00:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_remove [2021-11-25 18:00:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_remove [2021-11-25 18:00:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:00:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:00:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-25 18:00:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-25 18:00:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_wrreg16 [2021-11-25 18:00:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_wrreg16 [2021-11-25 18:00:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 18:00:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 18:00:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:00:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:00:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:00:29,850 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:00:29,855 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:00:30,970 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:00:32,816 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:00:32,924 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:00:33,574 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:00:33,574 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:00:33,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:00:33 BoogieIcfgContainer [2021-11-25 18:00:33,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:00:33,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:00:33,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:00:33,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:00:33,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:00:24" (1/3) ... [2021-11-25 18:00:33,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168e7104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:00:33, skipping insertion in model container [2021-11-25 18:00:33,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:28" (2/3) ... [2021-11-25 18:00:33,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168e7104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:00:33, skipping insertion in model container [2021-11-25 18:00:33,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:00:33" (3/3) ... [2021-11-25 18:00:33,586 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2021-11-25 18:00:33,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:00:33,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 18:00:33,643 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:00:33,649 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:00:33,649 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 18:00:33,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 1118 states, 674 states have (on average 1.3293768545994065) internal successors, (896), 687 states have internal predecessors, (896), 366 states have call successors, (366), 78 states have call predecessors, (366), 77 states have return successors, (357), 356 states have call predecessors, (357), 357 states have call successors, (357) [2021-11-25 18:00:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-25 18:00:33,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:33,715 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:33,715 INFO L402 AbstractCegarLoop]: === Iteration 1 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:00:33,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1867949063, now seen corresponding path program 1 times [2021-11-25 18:00:33,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:33,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858081413] [2021-11-25 18:00:33,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:33,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-25 18:00:34,374 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:34,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858081413] [2021-11-25 18:00:34,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858081413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:34,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:34,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:00:34,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982879857] [2021-11-25 18:00:34,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:34,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:00:34,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:34,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:00:34,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:34,421 INFO L87 Difference]: Start difference. First operand has 1118 states, 674 states have (on average 1.3293768545994065) internal successors, (896), 687 states have internal predecessors, (896), 366 states have call successors, (366), 78 states have call predecessors, (366), 77 states have return successors, (357), 356 states have call predecessors, (357), 357 states have call successors, (357) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-25 18:00:37,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:37,383 INFO L93 Difference]: Finished difference Result 3137 states and 4728 transitions. [2021-11-25 18:00:37,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:00:37,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 191 [2021-11-25 18:00:37,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:37,425 INFO L225 Difference]: With dead ends: 3137 [2021-11-25 18:00:37,425 INFO L226 Difference]: Without dead ends: 2036 [2021-11-25 18:00:37,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:37,449 INFO L933 BasicCegarLoop]: 1647 mSDtfsCounter, 1412 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:37,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 2956 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-25 18:00:37,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2021-11-25 18:00:37,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 2017. [2021-11-25 18:00:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1219 states have (on average 1.3264971287940934) internal successors, (1617), 1245 states have internal predecessors, (1617), 646 states have call successors, (646), 152 states have call predecessors, (646), 149 states have return successors, (684), 631 states have call predecessors, (684), 642 states have call successors, (684) [2021-11-25 18:00:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2947 transitions. [2021-11-25 18:00:37,693 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2947 transitions. Word has length 191 [2021-11-25 18:00:37,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:37,694 INFO L470 AbstractCegarLoop]: Abstraction has 2017 states and 2947 transitions. [2021-11-25 18:00:37,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-25 18:00:37,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2947 transitions. [2021-11-25 18:00:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-25 18:00:37,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:37,702 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 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] [2021-11-25 18:00:37,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:00:37,703 INFO L402 AbstractCegarLoop]: === Iteration 2 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:00:37,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:37,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1705722180, now seen corresponding path program 1 times [2021-11-25 18:00:37,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:37,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003764385] [2021-11-25 18:00:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:37,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:37,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2021-11-25 18:00:37,905 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:37,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003764385] [2021-11-25 18:00:37,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003764385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:37,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:37,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:00:37,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542465961] [2021-11-25 18:00:37,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:37,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:00:37,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:37,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:00:37,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:37,909 INFO L87 Difference]: Start difference. First operand 2017 states and 2947 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 18:00:40,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:40,424 INFO L93 Difference]: Finished difference Result 5894 states and 8610 transitions. [2021-11-25 18:00:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:00:40,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 195 [2021-11-25 18:00:40,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:40,459 INFO L225 Difference]: With dead ends: 5894 [2021-11-25 18:00:40,459 INFO L226 Difference]: Without dead ends: 3912 [2021-11-25 18:00:40,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:40,471 INFO L933 BasicCegarLoop]: 1608 mSDtfsCounter, 1460 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:40,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1460 Valid, 2864 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:00:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-11-25 18:00:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3908. [2021-11-25 18:00:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3908 states, 2380 states have (on average 1.3256302521008403) internal successors, (3155), 2424 states have internal predecessors, (3155), 1230 states have call successors, (1230), 300 states have call predecessors, (1230), 295 states have return successors, (1310), 1207 states have call predecessors, (1310), 1226 states have call successors, (1310) [2021-11-25 18:00:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3908 states to 3908 states and 5695 transitions. [2021-11-25 18:00:40,718 INFO L78 Accepts]: Start accepts. Automaton has 3908 states and 5695 transitions. Word has length 195 [2021-11-25 18:00:40,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:40,719 INFO L470 AbstractCegarLoop]: Abstraction has 3908 states and 5695 transitions. [2021-11-25 18:00:40,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 18:00:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3908 states and 5695 transitions. [2021-11-25 18:00:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-25 18:00:40,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:40,723 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:40,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:00:40,724 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:00:40,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:40,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1827929935, now seen corresponding path program 1 times [2021-11-25 18:00:40,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:40,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320740316] [2021-11-25 18:00:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:40,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-25 18:00:40,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:40,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320740316] [2021-11-25 18:00:40,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320740316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:40,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:40,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:00:40,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59406593] [2021-11-25 18:00:40,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:40,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:00:40,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:40,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:00:40,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:40,897 INFO L87 Difference]: Start difference. First operand 3908 states and 5695 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:00:44,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:44,189 INFO L93 Difference]: Finished difference Result 11218 states and 16269 transitions. [2021-11-25 18:00:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:00:44,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 195 [2021-11-25 18:00:44,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:44,249 INFO L225 Difference]: With dead ends: 11218 [2021-11-25 18:00:44,249 INFO L226 Difference]: Without dead ends: 7345 [2021-11-25 18:00:44,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:44,272 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 1320 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:44,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 2820 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-25 18:00:44,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2021-11-25 18:00:44,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 7320. [2021-11-25 18:00:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7320 states, 4424 states have (on average 1.3049276672694394) internal successors, (5773), 4518 states have internal predecessors, (5773), 2308 states have call successors, (2308), 594 states have call predecessors, (2308), 585 states have return successors, (2408), 2255 states have call predecessors, (2408), 2304 states have call successors, (2408) [2021-11-25 18:00:44,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7320 states to 7320 states and 10489 transitions. [2021-11-25 18:00:44,740 INFO L78 Accepts]: Start accepts. Automaton has 7320 states and 10489 transitions. Word has length 195 [2021-11-25 18:00:44,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:44,742 INFO L470 AbstractCegarLoop]: Abstraction has 7320 states and 10489 transitions. [2021-11-25 18:00:44,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:00:44,743 INFO L276 IsEmpty]: Start isEmpty. Operand 7320 states and 10489 transitions. [2021-11-25 18:00:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-25 18:00:44,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:44,748 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:44,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:00:44,749 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:00:44,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:44,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1043345255, now seen corresponding path program 1 times [2021-11-25 18:00:44,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:44,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548219282] [2021-11-25 18:00:44,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:44,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-25 18:00:45,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:45,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548219282] [2021-11-25 18:00:45,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548219282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:45,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:45,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:00:45,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454261315] [2021-11-25 18:00:45,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:45,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:00:45,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:45,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:00:45,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:45,054 INFO L87 Difference]: Start difference. First operand 7320 states and 10489 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:00:48,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:48,529 INFO L93 Difference]: Finished difference Result 17654 states and 25223 transitions. [2021-11-25 18:00:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:00:48,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 196 [2021-11-25 18:00:48,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:48,697 INFO L225 Difference]: With dead ends: 17654 [2021-11-25 18:00:48,698 INFO L226 Difference]: Without dead ends: 10369 [2021-11-25 18:00:48,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:48,738 INFO L933 BasicCegarLoop]: 1610 mSDtfsCounter, 1414 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:48,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 2877 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-25 18:00:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10369 states. [2021-11-25 18:00:49,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10369 to 10344. [2021-11-25 18:00:49,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10344 states, 6230 states have (on average 1.2906902086677368) internal successors, (8041), 6380 states have internal predecessors, (8041), 3248 states have call successors, (3248), 876 states have call predecessors, (3248), 863 states have return successors, (3392), 3155 states have call predecessors, (3392), 3244 states have call successors, (3392) [2021-11-25 18:00:49,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10344 states to 10344 states and 14681 transitions. [2021-11-25 18:00:49,426 INFO L78 Accepts]: Start accepts. Automaton has 10344 states and 14681 transitions. Word has length 196 [2021-11-25 18:00:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:49,427 INFO L470 AbstractCegarLoop]: Abstraction has 10344 states and 14681 transitions. [2021-11-25 18:00:49,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:00:49,432 INFO L276 IsEmpty]: Start isEmpty. Operand 10344 states and 14681 transitions. [2021-11-25 18:00:49,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-25 18:00:49,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:49,437 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 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] [2021-11-25 18:00:49,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:00:49,438 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:00:49,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:49,439 INFO L85 PathProgramCache]: Analyzing trace with hash 711528274, now seen corresponding path program 1 times [2021-11-25 18:00:49,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:49,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34340843] [2021-11-25 18:00:49,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:49,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2021-11-25 18:00:49,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:49,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34340843] [2021-11-25 18:00:49,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34340843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:49,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:49,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:00:49,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454350595] [2021-11-25 18:00:49,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:49,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:00:49,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:00:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:49,685 INFO L87 Difference]: Start difference. First operand 10344 states and 14681 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 18:00:52,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:53,842 INFO L93 Difference]: Finished difference Result 27454 states and 38947 transitions. [2021-11-25 18:00:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:00:53,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 219 [2021-11-25 18:00:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:54,028 INFO L225 Difference]: With dead ends: 27454 [2021-11-25 18:00:54,029 INFO L226 Difference]: Without dead ends: 17145 [2021-11-25 18:00:54,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:54,073 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 1464 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:54,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 2930 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 18:00:54,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17145 states. [2021-11-25 18:00:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17145 to 17114. [2021-11-25 18:00:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17114 states, 10344 states have (on average 1.2876063418406807) internal successors, (13319), 10606 states have internal predecessors, (13319), 5314 states have call successors, (5314), 1482 states have call predecessors, (5314), 1453 states have return successors, (5546), 5139 states have call predecessors, (5546), 5310 states have call successors, (5546) [2021-11-25 18:00:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17114 states to 17114 states and 24179 transitions. [2021-11-25 18:00:54,980 INFO L78 Accepts]: Start accepts. Automaton has 17114 states and 24179 transitions. Word has length 219 [2021-11-25 18:00:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:54,981 INFO L470 AbstractCegarLoop]: Abstraction has 17114 states and 24179 transitions. [2021-11-25 18:00:54,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 18:00:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 17114 states and 24179 transitions. [2021-11-25 18:00:54,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-25 18:00:54,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:54,987 INFO L514 BasicCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 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] [2021-11-25 18:00:54,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:00:54,987 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:00:54,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:54,988 INFO L85 PathProgramCache]: Analyzing trace with hash -511341333, now seen corresponding path program 1 times [2021-11-25 18:00:54,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:54,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600112298] [2021-11-25 18:00:54,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:54,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2021-11-25 18:00:55,140 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:55,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600112298] [2021-11-25 18:00:55,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600112298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:55,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:55,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:00:55,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362060282] [2021-11-25 18:00:55,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:55,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:00:55,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:55,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:00:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:55,144 INFO L87 Difference]: Start difference. First operand 17114 states and 24179 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 18:00:58,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:58,178 INFO L93 Difference]: Finished difference Result 43553 states and 61621 transitions. [2021-11-25 18:00:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:00:58,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 215 [2021-11-25 18:00:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:58,314 INFO L225 Difference]: With dead ends: 43553 [2021-11-25 18:00:58,315 INFO L226 Difference]: Without dead ends: 26474 [2021-11-25 18:00:58,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:58,363 INFO L933 BasicCegarLoop]: 1899 mSDtfsCounter, 1429 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:58,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1429 Valid, 3167 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:00:58,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26474 states. [2021-11-25 18:00:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26474 to 26425. [2021-11-25 18:00:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26425 states, 16066 states have (on average 1.2873770695879496) internal successors, (20683), 16518 states have internal predecessors, (20683), 8124 states have call successors, (8124), 2279 states have call predecessors, (8124), 2232 states have return successors, (8468), 7803 states have call predecessors, (8468), 8120 states have call successors, (8468) [2021-11-25 18:00:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26425 states to 26425 states and 37275 transitions. [2021-11-25 18:00:59,773 INFO L78 Accepts]: Start accepts. Automaton has 26425 states and 37275 transitions. Word has length 215 [2021-11-25 18:00:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:59,774 INFO L470 AbstractCegarLoop]: Abstraction has 26425 states and 37275 transitions. [2021-11-25 18:00:59,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 18:00:59,774 INFO L276 IsEmpty]: Start isEmpty. Operand 26425 states and 37275 transitions. [2021-11-25 18:00:59,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-25 18:00:59,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:59,780 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 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] [2021-11-25 18:00:59,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:00:59,780 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:00:59,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash 404931559, now seen corresponding path program 1 times [2021-11-25 18:00:59,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:59,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102145865] [2021-11-25 18:00:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:59,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2021-11-25 18:01:00,390 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:00,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102145865] [2021-11-25 18:01:00,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102145865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:00,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:00,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:01:00,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51351470] [2021-11-25 18:01:00,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:00,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:01:00,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:00,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:01:00,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:01:00,392 INFO L87 Difference]: Start difference. First operand 26425 states and 37275 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:01:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:04,936 INFO L93 Difference]: Finished difference Result 26431 states and 37280 transitions. [2021-11-25 18:01:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:01:04,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 238 [2021-11-25 18:01:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:05,035 INFO L225 Difference]: With dead ends: 26431 [2021-11-25 18:01:05,035 INFO L226 Difference]: Without dead ends: 26429 [2021-11-25 18:01:05,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:05,047 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 1515 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 3865 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:05,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1518 Valid, 3865 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 18:01:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26429 states. [2021-11-25 18:01:06,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26429 to 26429. [2021-11-25 18:01:06,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26429 states, 16069 states have (on average 1.287323417760906) internal successors, (20686), 16521 states have internal predecessors, (20686), 8124 states have call successors, (8124), 2280 states have call predecessors, (8124), 2233 states have return successors, (8468), 7803 states have call predecessors, (8468), 8120 states have call successors, (8468) [2021-11-25 18:01:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26429 states to 26429 states and 37278 transitions. [2021-11-25 18:01:06,686 INFO L78 Accepts]: Start accepts. Automaton has 26429 states and 37278 transitions. Word has length 238 [2021-11-25 18:01:06,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:06,688 INFO L470 AbstractCegarLoop]: Abstraction has 26429 states and 37278 transitions. [2021-11-25 18:01:06,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 18:01:06,688 INFO L276 IsEmpty]: Start isEmpty. Operand 26429 states and 37278 transitions. [2021-11-25 18:01:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-25 18:01:06,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:06,694 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 5, 5, 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] [2021-11-25 18:01:06,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:01:06,694 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:01:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash 479344611, now seen corresponding path program 1 times [2021-11-25 18:01:06,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:06,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148715573] [2021-11-25 18:01:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:06,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1271 trivial. 0 not checked. [2021-11-25 18:01:06,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:06,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148715573] [2021-11-25 18:01:06,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148715573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:06,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:06,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:01:06,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331766415] [2021-11-25 18:01:06,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:06,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:01:06,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:06,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:01:06,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:01:06,975 INFO L87 Difference]: Start difference. First operand 26429 states and 37278 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:01:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:11,371 INFO L93 Difference]: Finished difference Result 26435 states and 37283 transitions. [2021-11-25 18:01:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:01:11,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 244 [2021-11-25 18:01:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:11,485 INFO L225 Difference]: With dead ends: 26435 [2021-11-25 18:01:11,486 INFO L226 Difference]: Without dead ends: 26433 [2021-11-25 18:01:11,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:11,499 INFO L933 BasicCegarLoop]: 1293 mSDtfsCounter, 1510 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:11,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 3868 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-25 18:01:11,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26433 states. [2021-11-25 18:01:12,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26433 to 26433. [2021-11-25 18:01:12,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26433 states, 16072 states have (on average 1.2872697859631657) internal successors, (20689), 16524 states have internal predecessors, (20689), 8124 states have call successors, (8124), 2281 states have call predecessors, (8124), 2234 states have return successors, (8468), 7803 states have call predecessors, (8468), 8120 states have call successors, (8468) [2021-11-25 18:01:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26433 states to 26433 states and 37281 transitions. [2021-11-25 18:01:12,964 INFO L78 Accepts]: Start accepts. Automaton has 26433 states and 37281 transitions. Word has length 244 [2021-11-25 18:01:12,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:12,965 INFO L470 AbstractCegarLoop]: Abstraction has 26433 states and 37281 transitions. [2021-11-25 18:01:12,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:01:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand 26433 states and 37281 transitions. [2021-11-25 18:01:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-25 18:01:12,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:12,971 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 5, 5, 3, 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] [2021-11-25 18:01:12,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:01:12,972 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:01:12,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:12,972 INFO L85 PathProgramCache]: Analyzing trace with hash -347072595, now seen corresponding path program 1 times [2021-11-25 18:01:12,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:12,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739285483] [2021-11-25 18:01:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:12,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2021-11-25 18:01:13,182 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:13,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739285483] [2021-11-25 18:01:13,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739285483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:13,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:13,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:01:13,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155491742] [2021-11-25 18:01:13,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:13,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:01:13,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:13,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:01:13,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:01:13,185 INFO L87 Difference]: Start difference. First operand 26433 states and 37281 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 18:01:16,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:19,282 INFO L93 Difference]: Finished difference Result 28558 states and 39474 transitions. [2021-11-25 18:01:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:01:19,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 249 [2021-11-25 18:01:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:19,369 INFO L225 Difference]: With dead ends: 28558 [2021-11-25 18:01:19,369 INFO L226 Difference]: Without dead ends: 28554 [2021-11-25 18:01:19,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:19,381 INFO L933 BasicCegarLoop]: 1317 mSDtfsCounter, 1229 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:19,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 4249 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-25 18:01:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28554 states. [2021-11-25 18:01:20,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28554 to 28554. [2021-11-25 18:01:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28554 states, 17191 states have (on average 1.2770635797801175) internal successors, (21954), 17642 states have internal predecessors, (21954), 8586 states have call successors, (8586), 2822 states have call predecessors, (8586), 2774 states have return successors, (8930), 8265 states have call predecessors, (8930), 8582 states have call successors, (8930) [2021-11-25 18:01:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28554 states to 28554 states and 39470 transitions. [2021-11-25 18:01:20,753 INFO L78 Accepts]: Start accepts. Automaton has 28554 states and 39470 transitions. Word has length 249 [2021-11-25 18:01:20,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:20,754 INFO L470 AbstractCegarLoop]: Abstraction has 28554 states and 39470 transitions. [2021-11-25 18:01:20,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 18:01:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 28554 states and 39470 transitions. [2021-11-25 18:01:20,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-25 18:01:20,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:20,763 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:01:20,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:01:20,763 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:01:20,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:20,764 INFO L85 PathProgramCache]: Analyzing trace with hash -535916746, now seen corresponding path program 1 times [2021-11-25 18:01:20,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:20,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421472707] [2021-11-25 18:01:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:20,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2021-11-25 18:01:21,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:21,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421472707] [2021-11-25 18:01:21,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421472707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:21,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:21,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:01:21,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419238779] [2021-11-25 18:01:21,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:21,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:01:21,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:21,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:01:21,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:01:21,022 INFO L87 Difference]: Start difference. First operand 28554 states and 39470 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:01:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:25,827 INFO L93 Difference]: Finished difference Result 28554 states and 39470 transitions. [2021-11-25 18:01:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:01:25,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 252 [2021-11-25 18:01:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:25,908 INFO L225 Difference]: With dead ends: 28554 [2021-11-25 18:01:25,909 INFO L226 Difference]: Without dead ends: 28275 [2021-11-25 18:01:25,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:01:25,919 INFO L933 BasicCegarLoop]: 1291 mSDtfsCounter, 1507 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 3865 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:25,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 3865 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 18:01:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28275 states. [2021-11-25 18:01:27,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28275 to 28275. [2021-11-25 18:01:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28275 states, 17131 states have (on average 1.2724300974840932) internal successors, (21798), 17486 states have internal predecessors, (21798), 8387 states have call successors, (8387), 2785 states have call predecessors, (8387), 2755 states have return successors, (8735), 8179 states have call predecessors, (8735), 8387 states have call successors, (8735) [2021-11-25 18:01:27,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28275 states to 28275 states and 38920 transitions. [2021-11-25 18:01:27,249 INFO L78 Accepts]: Start accepts. Automaton has 28275 states and 38920 transitions. Word has length 252 [2021-11-25 18:01:27,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:27,250 INFO L470 AbstractCegarLoop]: Abstraction has 28275 states and 38920 transitions. [2021-11-25 18:01:27,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:01:27,251 INFO L276 IsEmpty]: Start isEmpty. Operand 28275 states and 38920 transitions. [2021-11-25 18:01:27,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-25 18:01:27,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:27,261 INFO L514 BasicCegarLoop]: trace histogram [22, 17, 17, 17, 17, 17, 17, 4, 4, 3, 3, 3, 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] [2021-11-25 18:01:27,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:01:27,261 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:01:27,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:27,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1976010743, now seen corresponding path program 1 times [2021-11-25 18:01:27,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:27,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11973180] [2021-11-25 18:01:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:27,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1301 trivial. 0 not checked. [2021-11-25 18:01:27,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:27,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11973180] [2021-11-25 18:01:27,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11973180] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:01:27,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101826397] [2021-11-25 18:01:27,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:27,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:01:27,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:01:27,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:01:27,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:01:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:28,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 2547 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:01:28,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:01:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2021-11-25 18:01:28,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:01:28,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101826397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:28,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:01:28,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 18:01:28,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147340517] [2021-11-25 18:01:28,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:28,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:01:28,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:28,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:01:28,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:01:28,759 INFO L87 Difference]: Start difference. First operand 28275 states and 38920 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 18:01:33,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:33,006 INFO L93 Difference]: Finished difference Result 69604 states and 95876 transitions. [2021-11-25 18:01:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:01:33,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 257 [2021-11-25 18:01:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:33,206 INFO L225 Difference]: With dead ends: 69604 [2021-11-25 18:01:33,206 INFO L226 Difference]: Without dead ends: 41486 [2021-11-25 18:01:33,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:01:33,270 INFO L933 BasicCegarLoop]: 1684 mSDtfsCounter, 1403 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:33,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1403 Valid, 2909 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-25 18:01:33,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41486 states. [2021-11-25 18:01:35,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41486 to 41450. [2021-11-25 18:01:35,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41450 states, 25121 states have (on average 1.2722821543728355) internal successors, (31961), 25662 states have internal predecessors, (31961), 12263 states have call successors, (12263), 4108 states have call predecessors, (12263), 4064 states have return successors, (12775), 11939 states have call predecessors, (12775), 12263 states have call successors, (12775) [2021-11-25 18:01:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41450 states to 41450 states and 56999 transitions. [2021-11-25 18:01:35,378 INFO L78 Accepts]: Start accepts. Automaton has 41450 states and 56999 transitions. Word has length 257 [2021-11-25 18:01:35,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:35,379 INFO L470 AbstractCegarLoop]: Abstraction has 41450 states and 56999 transitions. [2021-11-25 18:01:35,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 18:01:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 41450 states and 56999 transitions. [2021-11-25 18:01:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-25 18:01:35,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:35,385 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 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] [2021-11-25 18:01:35,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:01:35,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7aa97b-650c-4408-a1a0-6605fe2c674b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 18:01:35,600 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:01:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:35,601 INFO L85 PathProgramCache]: Analyzing trace with hash 991211405, now seen corresponding path program 1 times [2021-11-25 18:01:35,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:35,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99766883] [2021-11-25 18:01:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:35,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2021-11-25 18:01:35,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:35,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99766883] [2021-11-25 18:01:35,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99766883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:35,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:35,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:01:35,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081550374] [2021-11-25 18:01:35,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:35,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:01:35,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:35,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:01:35,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:01:35,781 INFO L87 Difference]: Start difference. First operand 41450 states and 56999 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-25 18:01:41,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:41,001 INFO L93 Difference]: Finished difference Result 102394 states and 140909 transitions. [2021-11-25 18:01:41,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:01:41,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 268 [2021-11-25 18:01:41,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:41,207 INFO L225 Difference]: With dead ends: 102394 [2021-11-25 18:01:41,207 INFO L226 Difference]: Without dead ends: 61101 [2021-11-25 18:01:41,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:01:41,502 INFO L933 BasicCegarLoop]: 1748 mSDtfsCounter, 1429 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:41,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1429 Valid, 2989 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-25 18:01:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61101 states. [2021-11-25 18:01:44,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61101 to 61073. [2021-11-25 18:01:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61073 states, 37087 states have (on average 1.2718472780219483) internal successors, (47169), 37894 states have internal predecessors, (47169), 17974 states have call successors, (17974), 6074 states have call predecessors, (17974), 6010 states have return successors, (18730), 17488 states have call predecessors, (18730), 17974 states have call successors, (18730) [2021-11-25 18:01:44,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61073 states to 61073 states and 83873 transitions. [2021-11-25 18:01:44,305 INFO L78 Accepts]: Start accepts. Automaton has 61073 states and 83873 transitions. Word has length 268 [2021-11-25 18:01:44,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:44,306 INFO L470 AbstractCegarLoop]: Abstraction has 61073 states and 83873 transitions. [2021-11-25 18:01:44,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-25 18:01:44,307 INFO L276 IsEmpty]: Start isEmpty. Operand 61073 states and 83873 transitions. [2021-11-25 18:01:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-25 18:01:44,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:44,318 INFO L514 BasicCegarLoop]: trace histogram [23, 17, 17, 17, 17, 17, 17, 5, 5, 4, 4, 4, 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] [2021-11-25 18:01:44,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:01:44,319 INFO L402 AbstractCegarLoop]: === Iteration 13 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:01:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:44,319 INFO L85 PathProgramCache]: Analyzing trace with hash 609345488, now seen corresponding path program 1 times [2021-11-25 18:01:44,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:44,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560602476] [2021-11-25 18:01:44,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:44,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1360 trivial. 0 not checked. [2021-11-25 18:01:44,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:44,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560602476] [2021-11-25 18:01:44,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560602476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:44,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:44,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:01:44,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084577505] [2021-11-25 18:01:44,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:44,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:01:44,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:44,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:01:44,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:01:44,496 INFO L87 Difference]: Start difference. First operand 61073 states and 83873 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-25 18:01:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:52,282 INFO L93 Difference]: Finished difference Result 149893 states and 205987 transitions. [2021-11-25 18:01:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:01:52,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 275 [2021-11-25 18:01:52,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:52,654 INFO L225 Difference]: With dead ends: 149893 [2021-11-25 18:01:52,654 INFO L226 Difference]: Without dead ends: 88977 [2021-11-25 18:01:52,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:01:52,814 INFO L933 BasicCegarLoop]: 2398 mSDtfsCounter, 1396 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 3634 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:52,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1396 Valid, 3634 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-25 18:01:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88977 states.