./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_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4035b79a2162ba317b65ff4b4b50beff318d26f8217214f4a55e9e0e820898d1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:40:56,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:40:56,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:40:56,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:40:56,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:40:56,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:40:56,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:40:56,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:40:56,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:40:56,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:40:56,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:40:56,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:40:56,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:40:56,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:40:56,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:40:56,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:40:56,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:40:56,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:40:56,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:40:56,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:40:56,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:40:56,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:40:56,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:40:56,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:40:56,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:40:56,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:40:56,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:40:56,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:40:56,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:40:56,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:40:56,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:40:56,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:40:56,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:40:56,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:40:56,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:40:56,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:40:56,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:40:56,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:40:56,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:40:56,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:40:56,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:40:56,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:40:56,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:40:56,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:40:56,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:40:56,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:40:56,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:40:56,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:40:56,924 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:40:56,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:40:56,924 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:40:56,925 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:40:56,925 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:40:56,925 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:40:56,925 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:40:56,925 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:40:56,926 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:40:56,926 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:40:56,926 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:40:56,926 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:40:56,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:40:56,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:40:56,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:40:56,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:40:56,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:40:56,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:40:56,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:40:56,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:40:56,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:40:56,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:40:56,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:40:56,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:40:56,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:40:56,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:40:56,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:40:56,930 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:40:56,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:40:56,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:40:56,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:40:56,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:40:56,931 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_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4035b79a2162ba317b65ff4b4b50beff318d26f8217214f4a55e9e0e820898d1 [2021-11-21 01:40:57,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:40:57,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:40:57,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:40:57,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:40:57,242 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:40:57,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-21 01:40:57,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/data/2f49050ac/293c8aec0fb049e3b5721d4a8fb8ff52/FLAG4883fabce [2021-11-21 01:40:58,268 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:40:58,269 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-21 01:40:58,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/data/2f49050ac/293c8aec0fb049e3b5721d4a8fb8ff52/FLAG4883fabce [2021-11-21 01:40:58,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/data/2f49050ac/293c8aec0fb049e3b5721d4a8fb8ff52 [2021-11-21 01:40:58,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:40:58,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:40:58,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:40:58,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:40:58,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:40:58,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:40:58" (1/1) ... [2021-11-21 01:40:58,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@430d24c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:40:58, skipping insertion in model container [2021-11-21 01:40:58,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:40:58" (1/1) ... [2021-11-21 01:40:58,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:40:58,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:41:02,565 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_84f45e80-4cb1-4cce-9d37-59a877f106ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2021-11-21 01:41:02,569 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_84f45e80-4cb1-4cce-9d37-59a877f106ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2021-11-21 01:41:02,569 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_84f45e80-4cb1-4cce-9d37-59a877f106ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2021-11-21 01:41:02,574 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_84f45e80-4cb1-4cce-9d37-59a877f106ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2021-11-21 01:41:02,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:41:02,664 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:41:03,184 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_84f45e80-4cb1-4cce-9d37-59a877f106ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2021-11-21 01:41:03,185 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_84f45e80-4cb1-4cce-9d37-59a877f106ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2021-11-21 01:41:03,185 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_84f45e80-4cb1-4cce-9d37-59a877f106ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2021-11-21 01:41:03,185 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_84f45e80-4cb1-4cce-9d37-59a877f106ea/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2021-11-21 01:41:03,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:41:03,384 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:41:03,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:03 WrapperNode [2021-11-21 01:41:03,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:41:03,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:41:03,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:41:03,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:41:03,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:03" (1/1) ... [2021-11-21 01:41:03,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:03" (1/1) ... [2021-11-21 01:41:03,892 INFO L137 Inliner]: procedures = 518, calls = 3478, calls flagged for inlining = 278, calls inlined = 255, statements flattened = 8982 [2021-11-21 01:41:03,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:41:03,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:41:03,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:41:03,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:41:03,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:03" (1/1) ... [2021-11-21 01:41:03,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:03" (1/1) ... [2021-11-21 01:41:03,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:03" (1/1) ... [2021-11-21 01:41:03,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:03" (1/1) ... [2021-11-21 01:41:04,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:03" (1/1) ... [2021-11-21 01:41:04,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:03" (1/1) ... [2021-11-21 01:41:04,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:03" (1/1) ... [2021-11-21 01:41:04,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:41:04,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:41:04,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:41:04,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:41:04,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:03" (1/1) ... [2021-11-21 01:41:04,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:41:04,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:41:04,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:41:04,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f45e80-4cb1-4cce-9d37-59a877f106ea/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:41:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_evict_inode [2021-11-21 01:41:04,626 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_evict_inode [2021-11-21 01:41:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2021-11-21 01:41:04,626 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2021-11-21 01:41:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:41:04,627 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:41:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_unlink [2021-11-21 01:41:04,627 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_unlink [2021-11-21 01:41:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wq_mutex_of_autofs_sb_info [2021-11-21 01:41:04,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wq_mutex_of_autofs_sb_info [2021-11-21 01:41:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_get_inode [2021-11-21 01:41:04,637 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_get_inode [2021-11-21 01:41:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-21 01:41:04,637 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-21 01:41:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:41:04,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:41:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_lseek [2021-11-21 01:41:04,640 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_lseek [2021-11-21 01:41:04,640 INFO L130 BoogieDeclarations]: Found specification of procedure do_expire_wait [2021-11-21 01:41:04,646 INFO L138 BoogieDeclarations]: Found implementation of procedure do_expire_wait [2021-11-21 01:41:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-21 01:41:04,647 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-21 01:41:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2021-11-21 01:41:04,647 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2021-11-21 01:41:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2021-11-21 01:41:04,648 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2021-11-21 01:41:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure current_kernel_time [2021-11-21 01:41:04,648 INFO L138 BoogieDeclarations]: Found implementation of procedure current_kernel_time [2021-11-21 01:41:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_indirect [2021-11-21 01:41:04,648 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_indirect [2021-11-21 01:41:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2021-11-21 01:41:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2021-11-21 01:41:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_clear_managed [2021-11-21 01:41:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_clear_managed [2021-11-21 01:41:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:41:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:41:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure from_kgid_munged [2021-11-21 01:41:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kgid_munged [2021-11-21 01:41:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure follow_down_one [2021-11-21 01:41:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure follow_down_one [2021-11-21 01:41:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_show_options [2021-11-21 01:41:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_show_options [2021-11-21 01:41:04,651 INFO L130 BoogieDeclarations]: Found specification of procedure __autofs4_add_expiring [2021-11-21 01:41:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __autofs4_add_expiring [2021-11-21 01:41:04,651 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 01:41:04,651 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_wait [2021-11-21 01:41:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_wait [2021-11-21 01:41:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl [2021-11-21 01:41:04,652 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl [2021-11-21 01:41:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:41:04,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:41:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-21 01:41:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-21 01:41:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:41:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:41:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 01:41:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-21 01:41:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:41:04,683 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:41:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:41:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure d_count [2021-11-21 01:41:04,684 INFO L138 BoogieDeclarations]: Found implementation of procedure d_count [2021-11-21 01:41:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-21 01:41:04,684 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-21 01:41:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___4 [2021-11-21 01:41:04,684 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___4 [2021-11-21 01:41:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___2 [2021-11-21 01:41:04,685 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___2 [2021-11-21 01:41:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2021-11-21 01:41:04,685 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2021-11-21 01:41:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-21 01:41:04,685 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-21 01:41:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:41:04,685 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:41:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-21 01:41:04,686 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-21 01:41:04,686 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_oz_mode [2021-11-21 01:41:04,686 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_oz_mode [2021-11-21 01:41:04,686 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_do_expire_multi [2021-11-21 01:41:04,686 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_do_expire_multi [2021-11-21 01:41:04,686 INFO L130 BoogieDeclarations]: Found specification of procedure __task_pid_nr_ns [2021-11-21 01:41:04,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __task_pid_nr_ns [2021-11-21 01:41:04,686 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:41:04,687 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:41:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_sbi [2021-11-21 01:41:04,687 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_sbi [2021-11-21 01:41:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:41:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 01:41:04,687 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 01:41:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_new_ino [2021-11-21 01:41:04,687 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_new_ino [2021-11-21 01:41:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure simple_empty [2021-11-21 01:41:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_empty [2021-11-21 01:41:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:41:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:41:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:41:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_can_expire [2021-11-21 01:41:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_can_expire [2021-11-21 01:41:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_ino [2021-11-21 01:41:04,688 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_ino [2021-11-21 01:41:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:41:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2021-11-21 01:41:04,689 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2021-11-21 01:41:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_open [2021-11-21 01:41:04,689 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_open [2021-11-21 01:41:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:41:04,689 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:41:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_rmdir [2021-11-21 01:41:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_rmdir [2021-11-21 01:41:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount [2021-11-21 01:41:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount [2021-11-21 01:41:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl_exit [2021-11-21 01:41:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl_exit [2021-11-21 01:41:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-21 01:41:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-21 01:41:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:41:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:41:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_open [2021-11-21 01:41:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_open [2021-11-21 01:41:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-21 01:41:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-21 01:41:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure clear_nlink [2021-11-21 01:41:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_nlink [2021-11-21 01:41:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_trigger [2021-11-21 01:41:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_trigger [2021-11-21 01:41:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:41:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-21 01:41:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-21 01:41:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:41:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:41:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:41:04,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:41:04,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-21 01:41:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-21 01:41:04,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 01:41:04,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 01:41:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-21 01:41:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-21 01:41:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-21 01:41:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:41:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:41:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:41:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:41:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:41:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure simple_positive [2021-11-21 01:41:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_positive [2021-11-21 01:41:04,699 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-21 01:41:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-21 01:41:04,699 INFO L130 BoogieDeclarations]: Found specification of procedure path_get [2021-11-21 01:41:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure path_get [2021-11-21 01:41:04,699 INFO L130 BoogieDeclarations]: Found specification of procedure dget_dlock [2021-11-21 01:41:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure dget_dlock [2021-11-21 01:41:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure d_lookup [2021-11-21 01:41:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure d_lookup [2021-11-21 01:41:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-21 01:41:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-21 01:41:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2021-11-21 01:41:04,703 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2021-11-21 01:41:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-21 01:41:04,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-21 01:41:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2021-11-21 01:41:04,704 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2021-11-21 01:41:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_mount [2021-11-21 01:41:04,704 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_mount [2021-11-21 01:41:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_indirect [2021-11-21 01:41:04,705 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_indirect [2021-11-21 01:41:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:41:04,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:41:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_wait [2021-11-21 01:41:04,706 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_wait [2021-11-21 01:41:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-21 01:41:04,707 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-21 01:41:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl [2021-11-21 01:41:04,720 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl [2021-11-21 01:41:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-21 01:41:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-21 01:41:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2021-11-21 01:41:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2021-11-21 01:41:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-21 01:41:04,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-21 01:41:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:41:04,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:41:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait_release [2021-11-21 01:41:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait_release [2021-11-21 01:41:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:41:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:41:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl_unlocked [2021-11-21 01:41:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl_unlocked [2021-11-21 01:41:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-21 01:41:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-21 01:41:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp [2021-11-21 01:41:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp [2021-11-21 01:41:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-21 01:41:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-21 01:41:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_compat_ioctl [2021-11-21 01:41:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_compat_ioctl [2021-11-21 01:41:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqretry [2021-11-21 01:41:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqretry [2021-11-21 01:41:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-21 01:41:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-21 01:41:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_readdir [2021-11-21 01:41:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_readdir [2021-11-21 01:41:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2021-11-21 01:41:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2021-11-21 01:41:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pipe_mutex_of_autofs_sb_info [2021-11-21 01:41:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pipe_mutex_of_autofs_sb_info [2021-11-21 01:41:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount_tree [2021-11-21 01:41:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount_tree [2021-11-21 01:41:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 01:41:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 01:41:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2021-11-21 01:41:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2021-11-21 01:41:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:41:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:41:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure get_task_pid [2021-11-21 01:41:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure get_task_pid [2021-11-21 01:41:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2021-11-21 01:41:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2021-11-21 01:41:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_busy [2021-11-21 01:41:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_busy [2021-11-21 01:41:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure d_unhashed [2021-11-21 01:41:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure d_unhashed [2021-11-21 01:41:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-21 01:41:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-21 01:41:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_kill_sb [2021-11-21 01:41:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_kill_sb [2021-11-21 01:41:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:41:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:41:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:41:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2021-11-21 01:41:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2021-11-21 01:41:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-21 01:41:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-21 01:41:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_set_managed [2021-11-21 01:41:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_set_managed [2021-11-21 01:41:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:41:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-21 01:41:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-21 01:41:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-11-21 01:41:04,740 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-11-21 01:41:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-21 01:41:04,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-21 01:41:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:41:04,748 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 01:41:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 01:41:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 01:41:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 01:41:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure find_autofs_mount [2021-11-21 01:41:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure find_autofs_mount [2021-11-21 01:41:04,749 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 01:41:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 01:41:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_wq_mutex_of_autofs_sb_info [2021-11-21 01:41:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_wq_mutex_of_autofs_sb_info [2021-11-21 01:41:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:41:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:41:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_close [2021-11-21 01:41:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_close [2021-11-21 01:41:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure ns_of_pid [2021-11-21 01:41:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_of_pid [2021-11-21 01:41:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:41:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:41:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 01:41:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 01:41:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_clean_ino [2021-11-21 01:41:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_clean_ino [2021-11-21 01:41:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wq_mutex_of_autofs_sb_info [2021-11-21 01:41:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wq_mutex_of_autofs_sb_info [2021-11-21 01:41:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 01:41:04,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-21 01:41:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure kern_path_mountpoint [2021-11-21 01:41:04,753 INFO L138 BoogieDeclarations]: Found implementation of procedure kern_path_mountpoint [2021-11-21 01:41:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_positive_dentry [2021-11-21 01:41:04,760 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_positive_dentry [2021-11-21 01:41:04,761 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:41:04,776 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:41:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure __managed_dentry_set_managed [2021-11-21 01:41:04,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __managed_dentry_set_managed [2021-11-21 01:41:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 01:41:04,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-21 01:41:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait [2021-11-21 01:41:04,778 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait [2021-11-21 01:41:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_find_wait [2021-11-21 01:41:04,778 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_find_wait [2021-11-21 01:41:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-21 01:41:04,778 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-21 01:41:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-21 01:41:04,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-21 01:41:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:41:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_release [2021-11-21 01:41:04,779 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_release [2021-11-21 01:41:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp_nr [2021-11-21 01:41:04,779 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp_nr [2021-11-21 01:41:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:41:04,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:41:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2021-11-21 01:41:04,780 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2021-11-21 01:41:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_symlink [2021-11-21 01:41:04,780 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_symlink [2021-11-21 01:41:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2021-11-21 01:41:04,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2021-11-21 01:41:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2021-11-21 01:41:04,781 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2021-11-21 01:41:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-21 01:41:04,781 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-21 01:41:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure d_mountpoint [2021-11-21 01:41:04,781 INFO L138 BoogieDeclarations]: Found implementation of procedure d_mountpoint [2021-11-21 01:41:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-21 01:41:04,781 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-21 01:41:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure have_submounts [2021-11-21 01:41:04,782 INFO L138 BoogieDeclarations]: Found implementation of procedure have_submounts [2021-11-21 01:41:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-21 01:41:04,782 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-21 01:41:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-21 01:41:04,782 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-21 01:41:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-21 01:41:04,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-21 01:41:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-21 01:41:04,783 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-21 01:41:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_prepare_pipe [2021-11-21 01:41:04,783 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_prepare_pipe [2021-11-21 01:41:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:41:04,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:41:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_del_active [2021-11-21 01:41:04,784 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_del_active [2021-11-21 01:41:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:41:04,784 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:41:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:41:04,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:41:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_nested [2021-11-21 01:41:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_nested [2021-11-21 01:41:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-21 01:41:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-21 01:41:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:41:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure d_add [2021-11-21 01:41:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure d_add [2021-11-21 01:41:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_catatonic_mode [2021-11-21 01:41:04,786 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_catatonic_mode [2021-11-21 01:41:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2021-11-21 01:41:04,786 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2021-11-21 01:41:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:41:04,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:41:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-21 01:41:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-11-21 01:41:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-11-21 01:41:05,966 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:41:05,974 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:41:06,239 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:41:06,988 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint switch_break: call ULTIMATE.dealloc(~#descriptor~12#1.base, ~#descriptor~12#1.offset);havoc ~#descriptor~12#1.base, ~#descriptor~12#1.offset; [2021-11-21 01:41:14,063 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:41:14,233 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:41:15,885 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:41:15,885 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-21 01:41:15,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:41:15 BoogieIcfgContainer [2021-11-21 01:41:15,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:41:15,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:41:15,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:41:15,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:41:15,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:40:58" (1/3) ... [2021-11-21 01:41:15,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536537cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:41:15, skipping insertion in model container [2021-11-21 01:41:15,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:03" (2/3) ... [2021-11-21 01:41:15,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536537cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:41:15, skipping insertion in model container [2021-11-21 01:41:15,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:41:15" (3/3) ... [2021-11-21 01:41:15,904 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-21 01:41:15,915 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:41:15,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:41:15,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:41:15,984 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:41:15,984 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:41:16,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 2608 states, 1550 states have (on average 1.3141935483870968) internal successors, (2037), 1600 states have internal predecessors, (2037), 894 states have call successors, (894), 162 states have call predecessors, (894), 161 states have return successors, (883), 877 states have call predecessors, (883), 883 states have call successors, (883) [2021-11-21 01:41:16,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-11-21 01:41:16,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:16,104 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:16,105 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:41:16,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash 437954438, now seen corresponding path program 1 times [2021-11-21 01:41:16,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:16,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971493965] [2021-11-21 01:41:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:16,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:17,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-21 01:41:17,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:17,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971493965] [2021-11-21 01:41:17,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971493965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:17,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:17,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:41:17,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334560797] [2021-11-21 01:41:17,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:17,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:41:17,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:17,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:41:17,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:17,275 INFO L87 Difference]: Start difference. First operand has 2608 states, 1550 states have (on average 1.3141935483870968) internal successors, (2037), 1600 states have internal predecessors, (2037), 894 states have call successors, (894), 162 states have call predecessors, (894), 161 states have return successors, (883), 877 states have call predecessors, (883), 883 states have call successors, (883) Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-21 01:41:19,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:22,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:23,807 INFO L93 Difference]: Finished difference Result 7356 states and 10872 transitions. [2021-11-21 01:41:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:41:23,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 465 [2021-11-21 01:41:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:23,876 INFO L225 Difference]: With dead ends: 7356 [2021-11-21 01:41:23,877 INFO L226 Difference]: Without dead ends: 4821 [2021-11-21 01:41:23,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:23,908 INFO L933 BasicCegarLoop]: 4787 mSDtfsCounter, 3284 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3288 SdHoareTripleChecker+Valid, 8130 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:23,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3288 Valid, 8130 Invalid, 895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 882 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-21 01:41:23,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2021-11-21 01:41:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4816. [2021-11-21 01:41:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4816 states, 2875 states have (on average 1.3067826086956522) internal successors, (3757), 2963 states have internal predecessors, (3757), 1625 states have call successors, (1625), 314 states have call predecessors, (1625), 313 states have return successors, (1625), 1609 states have call predecessors, (1625), 1621 states have call successors, (1625) [2021-11-21 01:41:24,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4816 states to 4816 states and 7007 transitions. [2021-11-21 01:41:24,480 INFO L78 Accepts]: Start accepts. Automaton has 4816 states and 7007 transitions. Word has length 465 [2021-11-21 01:41:24,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:24,486 INFO L470 AbstractCegarLoop]: Abstraction has 4816 states and 7007 transitions. [2021-11-21 01:41:24,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-21 01:41:24,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4816 states and 7007 transitions. [2021-11-21 01:41:24,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-11-21 01:41:24,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:24,520 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:24,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:41:24,520 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:41:24,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1895974626, now seen corresponding path program 1 times [2021-11-21 01:41:24,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:24,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083972489] [2021-11-21 01:41:24,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:24,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-21 01:41:25,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:25,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083972489] [2021-11-21 01:41:25,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083972489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:25,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:25,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:41:25,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542485151] [2021-11-21 01:41:25,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:25,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:41:25,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:25,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:41:25,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:25,186 INFO L87 Difference]: Start difference. First operand 4816 states and 7007 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-21 01:41:27,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:30,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:31,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:31,463 INFO L93 Difference]: Finished difference Result 11680 states and 16960 transitions. [2021-11-21 01:41:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:41:31,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 491 [2021-11-21 01:41:31,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:31,533 INFO L225 Difference]: With dead ends: 11680 [2021-11-21 01:41:31,534 INFO L226 Difference]: Without dead ends: 6953 [2021-11-21 01:41:31,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:31,560 INFO L933 BasicCegarLoop]: 4825 mSDtfsCounter, 3180 mSDsluCounter, 3711 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3184 SdHoareTripleChecker+Valid, 8158 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:31,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3184 Valid, 8158 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 919 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-11-21 01:41:31,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6953 states. [2021-11-21 01:41:31,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6953 to 6934. [2021-11-21 01:41:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6934 states, 4150 states have (on average 1.3050602409638554) internal successors, (5416), 4280 states have internal predecessors, (5416), 2311 states have call successors, (2311), 471 states have call predecessors, (2311), 470 states have return successors, (2319), 2286 states have call predecessors, (2319), 2307 states have call successors, (2319) [2021-11-21 01:41:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6934 states to 6934 states and 10046 transitions. [2021-11-21 01:41:32,014 INFO L78 Accepts]: Start accepts. Automaton has 6934 states and 10046 transitions. Word has length 491 [2021-11-21 01:41:32,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:32,015 INFO L470 AbstractCegarLoop]: Abstraction has 6934 states and 10046 transitions. [2021-11-21 01:41:32,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-21 01:41:32,017 INFO L276 IsEmpty]: Start isEmpty. Operand 6934 states and 10046 transitions. [2021-11-21 01:41:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2021-11-21 01:41:32,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:32,033 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:32,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:41:32,033 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:41:32,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:32,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1555354366, now seen corresponding path program 1 times [2021-11-21 01:41:32,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:32,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382792088] [2021-11-21 01:41:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:32,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-21 01:41:32,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:32,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382792088] [2021-11-21 01:41:32,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382792088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:32,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:32,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:41:32,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761851667] [2021-11-21 01:41:32,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:32,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:41:32,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:32,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:41:32,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:32,392 INFO L87 Difference]: Start difference. First operand 6934 states and 10046 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-21 01:41:34,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:36,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:39,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:39,792 INFO L93 Difference]: Finished difference Result 17160 states and 24767 transitions. [2021-11-21 01:41:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:41:39,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 492 [2021-11-21 01:41:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:39,884 INFO L225 Difference]: With dead ends: 17160 [2021-11-21 01:41:39,884 INFO L226 Difference]: Without dead ends: 10315 [2021-11-21 01:41:39,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:39,919 INFO L933 BasicCegarLoop]: 4921 mSDtfsCounter, 3196 mSDsluCounter, 3712 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3198 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:39,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3198 Valid, 8258 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 930 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-11-21 01:41:39,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10315 states. [2021-11-21 01:41:40,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10315 to 10291. [2021-11-21 01:41:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10291 states, 6192 states have (on average 1.3034560723514212) internal successors, (8071), 6393 states have internal predecessors, (8071), 3351 states have call successors, (3351), 746 states have call predecessors, (3351), 745 states have return successors, (3377), 3311 states have call predecessors, (3377), 3347 states have call successors, (3377) [2021-11-21 01:41:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10291 states to 10291 states and 14799 transitions. [2021-11-21 01:41:40,550 INFO L78 Accepts]: Start accepts. Automaton has 10291 states and 14799 transitions. Word has length 492 [2021-11-21 01:41:40,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:40,553 INFO L470 AbstractCegarLoop]: Abstraction has 10291 states and 14799 transitions. [2021-11-21 01:41:40,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-21 01:41:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 10291 states and 14799 transitions. [2021-11-21 01:41:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2021-11-21 01:41:40,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:40,566 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:40,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:41:40,567 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:41:40,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:40,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2027128535, now seen corresponding path program 1 times [2021-11-21 01:41:40,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:40,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671978942] [2021-11-21 01:41:40,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:40,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7659 trivial. 0 not checked. [2021-11-21 01:41:40,901 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:40,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671978942] [2021-11-21 01:41:40,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671978942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:40,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:40,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:41:40,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917283047] [2021-11-21 01:41:40,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:40,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:41:40,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:40,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:41:40,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:40,905 INFO L87 Difference]: Start difference. First operand 10291 states and 14799 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-21 01:41:43,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:46,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:49,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:49,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:49,919 INFO L93 Difference]: Finished difference Result 27770 states and 39902 transitions. [2021-11-21 01:41:49,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:41:49,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 493 [2021-11-21 01:41:49,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:50,025 INFO L225 Difference]: With dead ends: 27770 [2021-11-21 01:41:50,025 INFO L226 Difference]: Without dead ends: 17568 [2021-11-21 01:41:50,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:41:50,075 INFO L933 BasicCegarLoop]: 4530 mSDtfsCounter, 3042 mSDsluCounter, 3713 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 7864 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:50,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3042 Valid, 7864 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 890 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2021-11-21 01:41:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17568 states. [2021-11-21 01:41:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17568 to 17550. [2021-11-21 01:41:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17550 states, 10547 states have (on average 1.2992320091021143) internal successors, (13703), 10903 states have internal predecessors, (13703), 5704 states have call successors, (5704), 1300 states have call predecessors, (5704), 1296 states have return successors, (5760), 5629 states have call predecessors, (5760), 5700 states have call successors, (5760) [2021-11-21 01:41:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17550 states to 17550 states and 25167 transitions. [2021-11-21 01:41:51,143 INFO L78 Accepts]: Start accepts. Automaton has 17550 states and 25167 transitions. Word has length 493 [2021-11-21 01:41:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:51,145 INFO L470 AbstractCegarLoop]: Abstraction has 17550 states and 25167 transitions. [2021-11-21 01:41:51,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-21 01:41:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 17550 states and 25167 transitions. [2021-11-21 01:41:51,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2021-11-21 01:41:51,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:51,164 INFO L514 BasicCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:41:51,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:41:51,164 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:41:51,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:51,166 INFO L85 PathProgramCache]: Analyzing trace with hash 930517866, now seen corresponding path program 1 times [2021-11-21 01:41:51,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:51,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881436726] [2021-11-21 01:41:51,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:51,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7963 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2021-11-21 01:41:51,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:51,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881436726] [2021-11-21 01:41:51,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881436726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:41:51,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:41:51,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:41:51,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538052092] [2021-11-21 01:41:51,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:41:51,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:41:51,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:41:51,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:41:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:41:51,823 INFO L87 Difference]: Start difference. First operand 17550 states and 25167 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-21 01:41:55,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:56,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:41:58,585 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:01,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:04,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:06,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:07,010 INFO L93 Difference]: Finished difference Result 18808 states and 26894 transitions. [2021-11-21 01:42:07,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:42:07,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 515 [2021-11-21 01:42:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:07,105 INFO L225 Difference]: With dead ends: 18808 [2021-11-21 01:42:07,106 INFO L226 Difference]: Without dead ends: 18806 [2021-11-21 01:42:07,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:42:07,119 INFO L933 BasicCegarLoop]: 4179 mSDtfsCounter, 3359 mSDsluCounter, 11196 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3368 SdHoareTripleChecker+Valid, 14311 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:07,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3368 Valid, 14311 Invalid, 1509 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1503 Invalid, 5 Unknown, 0 Unchecked, 14.5s Time] [2021-11-21 01:42:07,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18806 states. [2021-11-21 01:42:08,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18806 to 18784. [2021-11-21 01:42:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18784 states, 11261 states have (on average 1.2968652872746649) internal successors, (14604), 11641 states have internal predecessors, (14604), 6099 states have call successors, (6099), 1424 states have call predecessors, (6099), 1421 states have return successors, (6157), 6022 states have call predecessors, (6157), 6095 states have call successors, (6157) [2021-11-21 01:42:08,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18784 states to 18784 states and 26860 transitions. [2021-11-21 01:42:08,458 INFO L78 Accepts]: Start accepts. Automaton has 18784 states and 26860 transitions. Word has length 515 [2021-11-21 01:42:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:08,460 INFO L470 AbstractCegarLoop]: Abstraction has 18784 states and 26860 transitions. [2021-11-21 01:42:08,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-21 01:42:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 18784 states and 26860 transitions. [2021-11-21 01:42:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2021-11-21 01:42:08,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:08,474 INFO L514 BasicCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:08,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:42:08,474 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:42:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:08,475 INFO L85 PathProgramCache]: Analyzing trace with hash 279731317, now seen corresponding path program 1 times [2021-11-21 01:42:08,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:08,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944603028] [2021-11-21 01:42:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:08,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2021-11-21 01:42:08,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:08,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944603028] [2021-11-21 01:42:08,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944603028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:08,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:08,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:42:08,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787343026] [2021-11-21 01:42:08,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:08,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:42:08,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:08,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:42:08,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:42:08,988 INFO L87 Difference]: Start difference. First operand 18784 states and 26860 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-21 01:42:12,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:14,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:16,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:16,263 INFO L93 Difference]: Finished difference Result 18802 states and 26879 transitions. [2021-11-21 01:42:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:42:16,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 520 [2021-11-21 01:42:16,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:16,364 INFO L225 Difference]: With dead ends: 18802 [2021-11-21 01:42:16,365 INFO L226 Difference]: Without dead ends: 18800 [2021-11-21 01:42:16,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:42:16,379 INFO L933 BasicCegarLoop]: 4182 mSDtfsCounter, 3354 mSDsluCounter, 11192 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3361 SdHoareTripleChecker+Valid, 14312 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:16,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3361 Valid, 14312 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1504 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2021-11-21 01:42:16,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18800 states. [2021-11-21 01:42:17,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18800 to 18796. [2021-11-21 01:42:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18796 states, 11268 states have (on average 1.296680866169684) internal successors, (14611), 11652 states have internal predecessors, (14611), 6099 states have call successors, (6099), 1425 states have call predecessors, (6099), 1426 states have return successors, (6165), 6022 states have call predecessors, (6165), 6095 states have call successors, (6165) [2021-11-21 01:42:17,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18796 states to 18796 states and 26875 transitions. [2021-11-21 01:42:17,670 INFO L78 Accepts]: Start accepts. Automaton has 18796 states and 26875 transitions. Word has length 520 [2021-11-21 01:42:17,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:17,672 INFO L470 AbstractCegarLoop]: Abstraction has 18796 states and 26875 transitions. [2021-11-21 01:42:17,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-21 01:42:17,672 INFO L276 IsEmpty]: Start isEmpty. Operand 18796 states and 26875 transitions. [2021-11-21 01:42:17,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2021-11-21 01:42:17,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:17,686 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:17,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:42:17,686 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:42:17,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:17,687 INFO L85 PathProgramCache]: Analyzing trace with hash 681168145, now seen corresponding path program 1 times [2021-11-21 01:42:17,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:17,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284275156] [2021-11-21 01:42:17,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:17,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8071 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8067 trivial. 0 not checked. [2021-11-21 01:42:18,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:18,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284275156] [2021-11-21 01:42:18,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284275156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:18,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:18,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:42:18,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836924592] [2021-11-21 01:42:18,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:18,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:42:18,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:18,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:42:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:42:18,414 INFO L87 Difference]: Start difference. First operand 18796 states and 26875 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-21 01:42:21,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:23,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:25,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:27,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:29,136 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:33,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:35,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:35,544 INFO L93 Difference]: Finished difference Result 18806 states and 26882 transitions. [2021-11-21 01:42:35,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:42:35,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 535 [2021-11-21 01:42:35,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:35,674 INFO L225 Difference]: With dead ends: 18806 [2021-11-21 01:42:35,674 INFO L226 Difference]: Without dead ends: 18804 [2021-11-21 01:42:35,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:42:35,683 INFO L933 BasicCegarLoop]: 4177 mSDtfsCounter, 3354 mSDsluCounter, 11187 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3358 SdHoareTripleChecker+Valid, 14297 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:35,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3358 Valid, 14297 Invalid, 1512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1505 Invalid, 6 Unknown, 0 Unchecked, 16.6s Time] [2021-11-21 01:42:35,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18804 states. [2021-11-21 01:42:36,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18804 to 18800. [2021-11-21 01:42:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18800 states, 11271 states have (on average 1.2966018986780232) internal successors, (14614), 11655 states have internal predecessors, (14614), 6099 states have call successors, (6099), 1426 states have call predecessors, (6099), 1427 states have return successors, (6165), 6022 states have call predecessors, (6165), 6095 states have call successors, (6165) [2021-11-21 01:42:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18800 states to 18800 states and 26878 transitions. [2021-11-21 01:42:36,540 INFO L78 Accepts]: Start accepts. Automaton has 18800 states and 26878 transitions. Word has length 535 [2021-11-21 01:42:36,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:36,541 INFO L470 AbstractCegarLoop]: Abstraction has 18800 states and 26878 transitions. [2021-11-21 01:42:36,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-21 01:42:36,541 INFO L276 IsEmpty]: Start isEmpty. Operand 18800 states and 26878 transitions. [2021-11-21 01:42:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2021-11-21 01:42:36,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:36,560 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:36,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:42:36,560 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:42:36,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:36,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1286179413, now seen corresponding path program 1 times [2021-11-21 01:42:36,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:36,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169908017] [2021-11-21 01:42:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:36,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8080 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8074 trivial. 0 not checked. [2021-11-21 01:42:37,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:37,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169908017] [2021-11-21 01:42:37,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169908017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:37,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:37,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:42:37,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406541076] [2021-11-21 01:42:37,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:37,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:42:37,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:37,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:42:37,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:42:37,312 INFO L87 Difference]: Start difference. First operand 18800 states and 26878 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-21 01:42:40,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:43,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:45,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:47,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:48,807 INFO L93 Difference]: Finished difference Result 34777 states and 49879 transitions. [2021-11-21 01:42:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:42:48,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 539 [2021-11-21 01:42:48,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:48,959 INFO L225 Difference]: With dead ends: 34777 [2021-11-21 01:42:48,959 INFO L226 Difference]: Without dead ends: 34773 [2021-11-21 01:42:48,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:42:48,975 INFO L933 BasicCegarLoop]: 4572 mSDtfsCounter, 3397 mSDsluCounter, 13602 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3398 SdHoareTripleChecker+Valid, 16920 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:48,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3398 Valid, 16920 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1699 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2021-11-21 01:42:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34773 states. [2021-11-21 01:42:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34773 to 34759. [2021-11-21 01:42:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34759 states, 20851 states have (on average 1.2982590763032948) internal successors, (27070), 21557 states have internal predecessors, (27070), 11259 states have call successors, (11259), 2650 states have call predecessors, (11259), 2646 states have return successors, (11535), 11101 states have call predecessors, (11535), 11251 states have call successors, (11535) [2021-11-21 01:42:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34759 states to 34759 states and 49864 transitions. [2021-11-21 01:42:51,047 INFO L78 Accepts]: Start accepts. Automaton has 34759 states and 49864 transitions. Word has length 539 [2021-11-21 01:42:51,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:51,049 INFO L470 AbstractCegarLoop]: Abstraction has 34759 states and 49864 transitions. [2021-11-21 01:42:51,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-21 01:42:51,049 INFO L276 IsEmpty]: Start isEmpty. Operand 34759 states and 49864 transitions. [2021-11-21 01:42:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2021-11-21 01:42:51,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:51,072 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:51,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:42:51,073 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:42:51,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:51,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1002616918, now seen corresponding path program 1 times [2021-11-21 01:42:51,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:51,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277028099] [2021-11-21 01:42:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:51,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8086 trivial. 0 not checked. [2021-11-21 01:42:51,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:51,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277028099] [2021-11-21 01:42:51,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277028099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:51,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:51,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:42:51,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400332734] [2021-11-21 01:42:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:51,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:42:51,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:51,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:42:51,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:42:51,589 INFO L87 Difference]: Start difference. First operand 34759 states and 49864 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-21 01:42:54,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:42:57,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:00,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:02,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:05,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:07,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:09,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:11,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:13,136 INFO L93 Difference]: Finished difference Result 63115 states and 91102 transitions. [2021-11-21 01:43:13,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:43:13,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 544 [2021-11-21 01:43:13,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:13,393 INFO L225 Difference]: With dead ends: 63115 [2021-11-21 01:43:13,393 INFO L226 Difference]: Without dead ends: 62936 [2021-11-21 01:43:13,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:43:13,427 INFO L933 BasicCegarLoop]: 4478 mSDtfsCounter, 3187 mSDsluCounter, 13249 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 3 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3187 SdHoareTripleChecker+Valid, 16495 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:13,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3187 Valid, 16495 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1670 Invalid, 8 Unknown, 0 Unchecked, 20.0s Time] [2021-11-21 01:43:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62936 states. [2021-11-21 01:43:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62936 to 62895. [2021-11-21 01:43:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62895 states, 37628 states have (on average 1.2993249707664505) internal successors, (48891), 38970 states have internal predecessors, (48891), 20385 states have call successors, (20385), 4935 states have call predecessors, (20385), 4879 states have return successors, (21486), 19988 states have call predecessors, (21486), 20373 states have call successors, (21486) [2021-11-21 01:43:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62895 states to 62895 states and 90762 transitions. [2021-11-21 01:43:16,640 INFO L78 Accepts]: Start accepts. Automaton has 62895 states and 90762 transitions. Word has length 544 [2021-11-21 01:43:16,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:16,642 INFO L470 AbstractCegarLoop]: Abstraction has 62895 states and 90762 transitions. [2021-11-21 01:43:16,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-21 01:43:16,642 INFO L276 IsEmpty]: Start isEmpty. Operand 62895 states and 90762 transitions. [2021-11-21 01:43:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2021-11-21 01:43:16,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:16,665 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:43:16,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:43:16,666 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:43:16,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:16,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2046999990, now seen corresponding path program 1 times [2021-11-21 01:43:16,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:16,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227280745] [2021-11-21 01:43:16,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:16,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8076 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8073 trivial. 0 not checked. [2021-11-21 01:43:17,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:17,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227280745] [2021-11-21 01:43:17,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227280745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:17,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:17,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:43:17,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019459511] [2021-11-21 01:43:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:17,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:43:17,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:43:17,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:43:17,265 INFO L87 Difference]: Start difference. First operand 62895 states and 90762 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-21 01:43:20,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:23,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:26,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:26,419 INFO L93 Difference]: Finished difference Result 150962 states and 218051 transitions. [2021-11-21 01:43:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:43:26,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 554 [2021-11-21 01:43:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:26,791 INFO L225 Difference]: With dead ends: 150962 [2021-11-21 01:43:26,791 INFO L226 Difference]: Without dead ends: 90457 [2021-11-21 01:43:26,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:43:26,986 INFO L933 BasicCegarLoop]: 6087 mSDtfsCounter, 3036 mSDsluCounter, 3705 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3038 SdHoareTripleChecker+Valid, 9414 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:26,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3038 Valid, 9414 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1162 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-21 01:43:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90457 states. [2021-11-21 01:43:30,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90457 to 90374. [2021-11-21 01:43:30,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90374 states, 54053 states have (on average 1.2987808262261114) internal successors, (70203), 56010 states have internal predecessors, (70203), 29302 states have call successors, (29302), 7112 states have call predecessors, (29302), 7016 states have return successors, (30912), 28704 states have call predecessors, (30912), 29290 states have call successors, (30912) [2021-11-21 01:43:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90374 states to 90374 states and 130417 transitions. [2021-11-21 01:43:31,466 INFO L78 Accepts]: Start accepts. Automaton has 90374 states and 130417 transitions. Word has length 554 [2021-11-21 01:43:31,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:31,467 INFO L470 AbstractCegarLoop]: Abstraction has 90374 states and 130417 transitions. [2021-11-21 01:43:31,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-21 01:43:31,467 INFO L276 IsEmpty]: Start isEmpty. Operand 90374 states and 130417 transitions. [2021-11-21 01:43:31,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2021-11-21 01:43:31,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:31,490 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:43:31,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:43:31,490 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:43:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:31,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2092845747, now seen corresponding path program 1 times [2021-11-21 01:43:31,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:31,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623796385] [2021-11-21 01:43:31,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:31,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:31,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8049 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8046 trivial. 0 not checked. [2021-11-21 01:43:31,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:31,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623796385] [2021-11-21 01:43:31,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623796385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:31,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:31,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:43:31,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981643688] [2021-11-21 01:43:31,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:31,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:43:31,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:43:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:43:31,788 INFO L87 Difference]: Start difference. First operand 90374 states and 130417 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-21 01:43:34,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:37,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:42,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:42,636 INFO L93 Difference]: Finished difference Result 217383 states and 313785 transitions. [2021-11-21 01:43:42,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:43:42,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 555 [2021-11-21 01:43:42,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:43,479 INFO L225 Difference]: With dead ends: 217383 [2021-11-21 01:43:43,480 INFO L226 Difference]: Without dead ends: 129399 [2021-11-21 01:43:43,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:43:43,693 INFO L933 BasicCegarLoop]: 6224 mSDtfsCounter, 3189 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3193 SdHoareTripleChecker+Valid, 9554 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:43,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3193 Valid, 9554 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1173 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2021-11-21 01:43:43,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129399 states. [2021-11-21 01:43:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129399 to 129250. [2021-11-21 01:43:49,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129250 states, 77407 states have (on average 1.2988101851253762) internal successors, (100537), 80244 states have internal predecessors, (100537), 41738 states have call successors, (41738), 10258 states have call predecessors, (41738), 10102 states have return successors, (44083), 40856 states have call predecessors, (44083), 41726 states have call successors, (44083) [2021-11-21 01:43:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129250 states to 129250 states and 186358 transitions. [2021-11-21 01:43:50,029 INFO L78 Accepts]: Start accepts. Automaton has 129250 states and 186358 transitions. Word has length 555 [2021-11-21 01:43:50,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:50,031 INFO L470 AbstractCegarLoop]: Abstraction has 129250 states and 186358 transitions. [2021-11-21 01:43:50,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-21 01:43:50,031 INFO L276 IsEmpty]: Start isEmpty. Operand 129250 states and 186358 transitions. [2021-11-21 01:43:50,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2021-11-21 01:43:50,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:50,052 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:43:50,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:43:50,053 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:43:50,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1824026289, now seen corresponding path program 1 times [2021-11-21 01:43:50,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:50,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311226811] [2021-11-21 01:43:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:50,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8049 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8046 trivial. 0 not checked. [2021-11-21 01:43:50,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:50,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311226811] [2021-11-21 01:43:50,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311226811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:50,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:50,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:43:50,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71906904] [2021-11-21 01:43:50,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:50,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:43:50,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:50,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:43:50,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:43:50,352 INFO L87 Difference]: Start difference. First operand 129250 states and 186358 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-21 01:43:53,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:43:55,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []