./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/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_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 14:15:25,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:15:25,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:15:25,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:15:25,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:15:25,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:15:25,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:15:25,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:15:25,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:15:25,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:15:25,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:15:25,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:15:25,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:15:25,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:15:25,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:15:25,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:15:25,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:15:25,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:15:25,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:15:25,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:15:25,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:15:25,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:15:25,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:15:25,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:15:25,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:15:25,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:15:25,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:15:25,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:15:25,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:15:25,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:15:25,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:15:25,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:15:25,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:15:25,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:15:25,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:15:25,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:15:25,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:15:25,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:15:25,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:15:25,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:15:25,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:15:25,938 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:15:25,979 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:15:25,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:15:25,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:15:25,981 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:15:25,981 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:15:25,981 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:15:25,982 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:15:25,982 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:15:25,988 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:15:25,989 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:15:25,990 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:15:25,990 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:15:25,990 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:15:25,991 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:15:25,991 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:15:25,991 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:15:25,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:15:25,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:15:25,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:15:25,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:15:25,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:15:25,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:15:25,993 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:15:25,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:15:25,994 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:15:25,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:15:25,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:15:25,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:15:25,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:15:25,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:15:25,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:15:25,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:15:25,997 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:15:25,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:15:25,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:15:25,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:15:25,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:15:25,998 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_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4035b79a2162ba317b65ff4b4b50beff318d26f8217214f4a55e9e0e820898d1 [2021-11-19 14:15:26,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:15:26,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:15:26,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:15:26,284 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:15:26,285 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:15:26,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-19 14:15:26,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/data/ab1ef83ff/dafee5f093a64515a5a7b444c9c73f37/FLAGb7040230f [2021-11-19 14:15:27,390 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:15:27,392 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-19 14:15:27,449 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/data/ab1ef83ff/dafee5f093a64515a5a7b444c9c73f37/FLAGb7040230f [2021-11-19 14:15:27,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/data/ab1ef83ff/dafee5f093a64515a5a7b444c9c73f37 [2021-11-19 14:15:27,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:15:27,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:15:27,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:27,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:15:27,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:15:27,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:27" (1/1) ... [2021-11-19 14:15:27,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541cff3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:27, skipping insertion in model container [2021-11-19 14:15:27,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:27" (1/1) ... [2021-11-19 14:15:27,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:15:27,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:15:30,233 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:15:30,243 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:15:31,023 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:15:31,031 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:15:31,688 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2021-11-19 14:15:31,690 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2021-11-19 14:15:31,691 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2021-11-19 14:15:31,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2021-11-19 14:15:31,714 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:31,745 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:15:31,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a91afc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:31, skipping insertion in model container [2021-11-19 14:15:31,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:31,747 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:15:31,749 INFO L158 Benchmark]: Toolchain (without parser) took 4014.07ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 79.3MB in the beginning and 60.7MB in the end (delta: 18.6MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. [2021-11-19 14:15:31,749 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:15:31,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4008.41ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 79.0MB in the beginning and 60.7MB in the end (delta: 18.4MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. [2021-11-19 14:15:31,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4008.41ms. Allocated memory was 109.1MB in the beginning and 136.3MB in the end (delta: 27.3MB). Free memory was 79.0MB in the beginning and 60.7MB in the end (delta: 18.4MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4822]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/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_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 14:15:34,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:15:34,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:15:34,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:15:34,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:15:34,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:15:34,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:15:34,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:15:34,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:15:34,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:15:34,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:15:34,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:15:34,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:15:34,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:15:34,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:15:34,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:15:34,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:15:34,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:15:34,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:15:34,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:15:34,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:15:34,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:15:34,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:15:34,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:15:34,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:15:34,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:15:34,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:15:34,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:15:34,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:15:34,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:15:34,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:15:34,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:15:34,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:15:34,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:15:34,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:15:34,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:15:34,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:15:34,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:15:34,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:15:34,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:15:34,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:15:34,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:15:34,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:15:34,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:15:34,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:15:34,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:15:34,215 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:15:34,216 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:15:34,216 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:15:34,216 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:15:34,216 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:15:34,217 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:15:34,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:15:34,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:15:34,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:15:34,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:15:34,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:15:34,220 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:15:34,220 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:15:34,221 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:15:34,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:15:34,221 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:15:34,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:15:34,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:15:34,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:15:34,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:15:34,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:15:34,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:15:34,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:15:34,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:15:34,223 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:15:34,223 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:15:34,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:15:34,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:15:34,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:15:34,224 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4035b79a2162ba317b65ff4b4b50beff318d26f8217214f4a55e9e0e820898d1 [2021-11-19 14:15:34,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:15:34,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:15:34,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:15:34,685 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:15:34,686 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:15:34,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-19 14:15:34,755 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/data/dda3201b6/799dab510f8c43d5bf3a26c790173e67/FLAG1bcaa600b [2021-11-19 14:15:35,848 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:15:35,850 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-19 14:15:35,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/data/dda3201b6/799dab510f8c43d5bf3a26c790173e67/FLAG1bcaa600b [2021-11-19 14:15:36,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/data/dda3201b6/799dab510f8c43d5bf3a26c790173e67 [2021-11-19 14:15:36,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:15:36,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:15:36,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:36,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:15:36,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:15:36,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:36" (1/1) ... [2021-11-19 14:15:36,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad05294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:36, skipping insertion in model container [2021-11-19 14:15:36,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:36" (1/1) ... [2021-11-19 14:15:36,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:15:36,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:15:40,507 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2021-11-19 14:15:40,510 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2021-11-19 14:15:40,511 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2021-11-19 14:15:40,512 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2021-11-19 14:15:40,554 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:40,623 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:15:40,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:15:41,114 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2021-11-19 14:15:41,114 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2021-11-19 14:15:41,115 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2021-11-19 14:15:41,116 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2021-11-19 14:15:41,125 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:41,158 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:15:41,652 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2021-11-19 14:15:41,653 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2021-11-19 14:15:41,653 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2021-11-19 14:15:41,654 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_89212d1a-c090-4c80-8b37-5286864fc158/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2021-11-19 14:15:41,663 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:15:41,933 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:15:41,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41 WrapperNode [2021-11-19 14:15:41,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:15:41,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:15:41,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:15:41,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:15:41,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41" (1/1) ... [2021-11-19 14:15:42,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41" (1/1) ... [2021-11-19 14:15:42,399 INFO L137 Inliner]: procedures = 532, calls = 3478, calls flagged for inlining = 278, calls inlined = 255, statements flattened = 8673 [2021-11-19 14:15:42,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:15:42,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:15:42,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:15:42,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:15:42,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41" (1/1) ... [2021-11-19 14:15:42,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41" (1/1) ... [2021-11-19 14:15:42,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41" (1/1) ... [2021-11-19 14:15:42,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41" (1/1) ... [2021-11-19 14:15:42,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41" (1/1) ... [2021-11-19 14:15:42,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41" (1/1) ... [2021-11-19 14:15:42,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41" (1/1) ... [2021-11-19 14:15:42,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:15:42,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:15:42,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:15:42,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:15:42,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41" (1/1) ... [2021-11-19 14:15:42,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:15:42,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:15:42,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:15:43,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:15:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_evict_inode [2021-11-19 14:15:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_evict_inode [2021-11-19 14:15:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2021-11-19 14:15:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2021-11-19 14:15:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:15:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:15:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_unlink [2021-11-19 14:15:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_unlink [2021-11-19 14:15:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wq_mutex_of_autofs_sb_info [2021-11-19 14:15:43,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wq_mutex_of_autofs_sb_info [2021-11-19 14:15:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_get_inode [2021-11-19 14:15:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_get_inode [2021-11-19 14:15:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-19 14:15:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-19 14:15:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:15:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:15:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_lseek [2021-11-19 14:15:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_lseek [2021-11-19 14:15:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure do_expire_wait [2021-11-19 14:15:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure do_expire_wait [2021-11-19 14:15:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-19 14:15:43,053 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-19 14:15:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2021-11-19 14:15:43,053 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2021-11-19 14:15:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2021-11-19 14:15:43,053 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2021-11-19 14:15:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure current_kernel_time [2021-11-19 14:15:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure current_kernel_time [2021-11-19 14:15:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_indirect [2021-11-19 14:15:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_indirect [2021-11-19 14:15:43,055 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2021-11-19 14:15:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2021-11-19 14:15:43,055 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_clear_managed [2021-11-19 14:15:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_clear_managed [2021-11-19 14:15:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-19 14:15:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-19 14:15:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure from_kgid_munged [2021-11-19 14:15:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kgid_munged [2021-11-19 14:15:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure follow_down_one [2021-11-19 14:15:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure follow_down_one [2021-11-19 14:15:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_show_options [2021-11-19 14:15:43,058 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_show_options [2021-11-19 14:15:43,058 INFO L130 BoogieDeclarations]: Found specification of procedure __autofs4_add_expiring [2021-11-19 14:15:43,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __autofs4_add_expiring [2021-11-19 14:15:43,059 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 14:15:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_wait [2021-11-19 14:15:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_wait [2021-11-19 14:15:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl [2021-11-19 14:15:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl [2021-11-19 14:15:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:15:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:15:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-19 14:15:43,062 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-19 14:15:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:15:43,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:15:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-19 14:15:43,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-19 14:15:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 14:15:43,063 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 14:15:43,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:15:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure d_count [2021-11-19 14:15:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure d_count [2021-11-19 14:15:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 14:15:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:15:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-19 14:15:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-19 14:15:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:15:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___4 [2021-11-19 14:15:43,066 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___4 [2021-11-19 14:15:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___2 [2021-11-19 14:15:43,066 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___2 [2021-11-19 14:15:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2021-11-19 14:15:43,066 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2021-11-19 14:15:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-19 14:15:43,067 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-19 14:15:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-19 14:15:43,068 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-19 14:15:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-19 14:15:43,068 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-19 14:15:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_oz_mode [2021-11-19 14:15:43,068 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_oz_mode [2021-11-19 14:15:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_do_expire_multi [2021-11-19 14:15:43,069 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_do_expire_multi [2021-11-19 14:15:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure __task_pid_nr_ns [2021-11-19 14:15:43,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __task_pid_nr_ns [2021-11-19 14:15:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-19 14:15:43,070 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-19 14:15:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_sbi [2021-11-19 14:15:43,070 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_sbi [2021-11-19 14:15:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-19 14:15:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-19 14:15:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_new_ino [2021-11-19 14:15:43,071 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_new_ino [2021-11-19 14:15:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure simple_empty [2021-11-19 14:15:43,072 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_empty [2021-11-19 14:15:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:15:43,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:15:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_can_expire [2021-11-19 14:15:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_can_expire [2021-11-19 14:15:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_ino [2021-11-19 14:15:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_ino [2021-11-19 14:15:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2021-11-19 14:15:43,074 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2021-11-19 14:15:43,076 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_open [2021-11-19 14:15:43,079 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_open [2021-11-19 14:15:43,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:15:43,079 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:15:43,079 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_rmdir [2021-11-19 14:15:43,080 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_rmdir [2021-11-19 14:15:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount [2021-11-19 14:15:43,081 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount [2021-11-19 14:15:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl_exit [2021-11-19 14:15:43,082 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl_exit [2021-11-19 14:15:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-19 14:15:43,088 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-19 14:15:43,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-19 14:15:43,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-19 14:15:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_open [2021-11-19 14:15:43,089 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_open [2021-11-19 14:15:43,089 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-19 14:15:43,089 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-19 14:15:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure clear_nlink [2021-11-19 14:15:43,090 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_nlink [2021-11-19 14:15:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-19 14:15:43,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-19 14:15:43,090 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_trigger [2021-11-19 14:15:43,090 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_trigger [2021-11-19 14:15:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:15:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-19 14:15:43,091 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-19 14:15:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:15:43,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:15:43,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:15:43,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:15:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-19 14:15:43,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-19 14:15:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-19 14:15:43,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-19 14:15:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-19 14:15:43,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-19 14:15:43,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-19 14:15:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:15:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:15:43,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:15:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:15:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 14:15:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure simple_positive [2021-11-19 14:15:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_positive [2021-11-19 14:15:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:15:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:15:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:15:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-19 14:15:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-19 14:15:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure path_get [2021-11-19 14:15:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure path_get [2021-11-19 14:15:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure dget_dlock [2021-11-19 14:15:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure dget_dlock [2021-11-19 14:15:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure d_lookup [2021-11-19 14:15:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure d_lookup [2021-11-19 14:15:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-19 14:15:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-19 14:15:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2021-11-19 14:15:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2021-11-19 14:15:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-19 14:15:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-19 14:15:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2021-11-19 14:15:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2021-11-19 14:15:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:15:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_mount [2021-11-19 14:15:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_mount [2021-11-19 14:15:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_indirect [2021-11-19 14:15:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_indirect [2021-11-19 14:15:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:15:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:15:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_wait [2021-11-19 14:15:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_wait [2021-11-19 14:15:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-19 14:15:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-19 14:15:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl [2021-11-19 14:15:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl [2021-11-19 14:15:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:15:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2021-11-19 14:15:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2021-11-19 14:15:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-19 14:15:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-19 14:15:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:15:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:15:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:15:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:15:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:15:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait_release [2021-11-19 14:15:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait_release [2021-11-19 14:15:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:15:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:15:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl_unlocked [2021-11-19 14:15:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl_unlocked [2021-11-19 14:15:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-19 14:15:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-19 14:15:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp [2021-11-19 14:15:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp [2021-11-19 14:15:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-19 14:15:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-19 14:15:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_compat_ioctl [2021-11-19 14:15:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_compat_ioctl [2021-11-19 14:15:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqretry [2021-11-19 14:15:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqretry [2021-11-19 14:15:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-19 14:15:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-19 14:15:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_readdir [2021-11-19 14:15:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_readdir [2021-11-19 14:15:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2021-11-19 14:15:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2021-11-19 14:15:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pipe_mutex_of_autofs_sb_info [2021-11-19 14:15:43,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pipe_mutex_of_autofs_sb_info [2021-11-19 14:15:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount_tree [2021-11-19 14:15:43,105 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount_tree [2021-11-19 14:15:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-19 14:15:43,105 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-19 14:15:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2021-11-19 14:15:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2021-11-19 14:15:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 14:15:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 14:15:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure get_task_pid [2021-11-19 14:15:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure get_task_pid [2021-11-19 14:15:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2021-11-19 14:15:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2021-11-19 14:15:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_busy [2021-11-19 14:15:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_busy [2021-11-19 14:15:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure d_unhashed [2021-11-19 14:15:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure d_unhashed [2021-11-19 14:15:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-19 14:15:43,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-19 14:15:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_kill_sb [2021-11-19 14:15:43,113 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_kill_sb [2021-11-19 14:15:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:15:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-19 14:15:43,113 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-19 14:15:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2021-11-19 14:15:43,113 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2021-11-19 14:15:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-19 14:15:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-19 14:15:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_set_managed [2021-11-19 14:15:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_set_managed [2021-11-19 14:15:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:15:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-19 14:15:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-19 14:15:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-11-19 14:15:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-11-19 14:15:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:15:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:15:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:15:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:15:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:15:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-19 14:15:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-19 14:15:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-19 14:15:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-19 14:15:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure find_autofs_mount [2021-11-19 14:15:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure find_autofs_mount [2021-11-19 14:15:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-19 14:15:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-19 14:15:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_wq_mutex_of_autofs_sb_info [2021-11-19 14:15:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_wq_mutex_of_autofs_sb_info [2021-11-19 14:15:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:15:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:15:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_close [2021-11-19 14:15:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_close [2021-11-19 14:15:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure ns_of_pid [2021-11-19 14:15:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_of_pid [2021-11-19 14:15:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 14:15:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 14:15:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-19 14:15:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-19 14:15:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_clean_ino [2021-11-19 14:15:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_clean_ino [2021-11-19 14:15:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wq_mutex_of_autofs_sb_info [2021-11-19 14:15:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wq_mutex_of_autofs_sb_info [2021-11-19 14:15:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_LONG [2021-11-19 14:15:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_LONG [2021-11-19 14:15:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-19 14:15:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-19 14:15:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure kern_path_mountpoint [2021-11-19 14:15:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure kern_path_mountpoint [2021-11-19 14:15:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_positive_dentry [2021-11-19 14:15:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_positive_dentry [2021-11-19 14:15:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 14:15:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 14:15:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure __managed_dentry_set_managed [2021-11-19 14:15:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __managed_dentry_set_managed [2021-11-19 14:15:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-19 14:15:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-19 14:15:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait [2021-11-19 14:15:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait [2021-11-19 14:15:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-11-19 14:15:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-11-19 14:15:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_find_wait [2021-11-19 14:15:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_find_wait [2021-11-19 14:15:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-19 14:15:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-19 14:15:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-19 14:15:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-19 14:15:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_release [2021-11-19 14:15:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_release [2021-11-19 14:15:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp_nr [2021-11-19 14:15:43,126 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp_nr [2021-11-19 14:15:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:15:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:15:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:15:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:15:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:15:43,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:15:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2021-11-19 14:15:43,127 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2021-11-19 14:15:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_symlink [2021-11-19 14:15:43,127 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_symlink [2021-11-19 14:15:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2021-11-19 14:15:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2021-11-19 14:15:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2021-11-19 14:15:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2021-11-19 14:15:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-19 14:15:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-19 14:15:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure d_mountpoint [2021-11-19 14:15:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure d_mountpoint [2021-11-19 14:15:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-19 14:15:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-19 14:15:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure have_submounts [2021-11-19 14:15:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure have_submounts [2021-11-19 14:15:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-19 14:15:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-19 14:15:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-19 14:15:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-19 14:15:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-19 14:15:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-19 14:15:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-19 14:15:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-19 14:15:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_prepare_pipe [2021-11-19 14:15:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_prepare_pipe [2021-11-19 14:15:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:15:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:15:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_del_active [2021-11-19 14:15:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_del_active [2021-11-19 14:15:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-19 14:15:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-19 14:15:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_nested [2021-11-19 14:15:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_nested [2021-11-19 14:15:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-19 14:15:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-19 14:15:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure d_add [2021-11-19 14:15:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure d_add [2021-11-19 14:15:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_catatonic_mode [2021-11-19 14:15:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_catatonic_mode [2021-11-19 14:15:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2021-11-19 14:15:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2021-11-19 14:15:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:15:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:15:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-19 14:15:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-11-19 14:15:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-11-19 14:15:44,388 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:15:44,396 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:15:44,697 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:15:50,918 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; [2021-11-19 14:17:04,841 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:17:07,021 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:17:07,056 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:17:07,056 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-19 14:17:07,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:17:07 BoogieIcfgContainer [2021-11-19 14:17:07,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:17:07,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:17:07,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:17:07,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:17:07,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:15:36" (1/3) ... [2021-11-19 14:17:07,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abe0182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:17:07, skipping insertion in model container [2021-11-19 14:17:07,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:41" (2/3) ... [2021-11-19 14:17:07,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abe0182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:17:07, skipping insertion in model container [2021-11-19 14:17:07,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:17:07" (3/3) ... [2021-11-19 14:17:07,072 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-19 14:17:07,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:17:07,078 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:17:07,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:17:07,156 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 [2021-11-19 14:17:07,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:17:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 3194 states, 2136 states have (on average 1.299625468164794) internal successors, (2776), 2186 states have internal predecessors, (2776), 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) [2021-11-19 14:17:07,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2021-11-19 14:17:07,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:07,312 INFO L514 BasicCegarLoop]: trace histogram [45, 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] [2021-11-19 14:17:07,313 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:17:07,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:07,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1954838244, now seen corresponding path program 1 times [2021-11-19 14:17:07,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:07,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288736571] [2021-11-19 14:17:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:07,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:07,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:07,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:07,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:17:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:09,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 2358 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:17:09,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8514 trivial. 0 not checked. [2021-11-19 14:17:10,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2021-11-19 14:17:12,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:12,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288736571] [2021-11-19 14:17:12,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288736571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:12,260 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:12,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:17:12,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970598394] [2021-11-19 14:17:12,265 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:12,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:17:12,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:12,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:17:12,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:17:12,328 INFO L87 Difference]: Start difference. First operand has 3194 states, 2136 states have (on average 1.299625468164794) internal successors, (2776), 2186 states have internal predecessors, (2776), 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 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2021-11-19 14:17:14,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:17:28,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:28,321 INFO L93 Difference]: Finished difference Result 12170 states and 17837 transitions. [2021-11-19 14:17:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:17:28,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) Word has length 516 [2021-11-19 14:17:28,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:28,431 INFO L225 Difference]: With dead ends: 12170 [2021-11-19 14:17:28,431 INFO L226 Difference]: Without dead ends: 9043 [2021-11-19 14:17:28,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:17:28,482 INFO L933 BasicCegarLoop]: 6084 mSDtfsCounter, 8554 mSDsluCounter, 10810 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8554 SdHoareTripleChecker+Valid, 16894 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:28,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8554 Valid, 16894 Invalid, 1864 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 1831 Invalid, 1 Unknown, 0 Unchecked, 15.1s Time] [2021-11-19 14:17:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9043 states. [2021-11-19 14:17:29,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9043 to 9024. [2021-11-19 14:17:29,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9024 states, 6054 states have (on average 1.2743640568219359) internal successors, (7715), 6192 states have internal predecessors, (7715), 2492 states have call successors, (2492), 476 states have call predecessors, (2492), 475 states have return successors, (2488), 2470 states have call predecessors, (2488), 2488 states have call successors, (2488) [2021-11-19 14:17:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9024 states to 9024 states and 12695 transitions. [2021-11-19 14:17:29,372 INFO L78 Accepts]: Start accepts. Automaton has 9024 states and 12695 transitions. Word has length 516 [2021-11-19 14:17:29,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:29,375 INFO L470 AbstractCegarLoop]: Abstraction has 9024 states and 12695 transitions. [2021-11-19 14:17:29,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 4 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (49), 4 states have call predecessors, (49), 4 states have call successors, (49) [2021-11-19 14:17:29,376 INFO L276 IsEmpty]: Start isEmpty. Operand 9024 states and 12695 transitions. [2021-11-19 14:17:29,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2021-11-19 14:17:29,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:29,400 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 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] [2021-11-19 14:17:29,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 14:17:29,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:17:29,614 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:17:29,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1621872551, now seen corresponding path program 1 times [2021-11-19 14:17:29,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:29,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789361965] [2021-11-19 14:17:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:29,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:29,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:29,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:29,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:17:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:31,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:17:31,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8518 trivial. 0 not checked. [2021-11-19 14:17:33,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8650 trivial. 0 not checked. [2021-11-19 14:17:34,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:34,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789361965] [2021-11-19 14:17:34,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789361965] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:34,245 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:34,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:17:34,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087463723] [2021-11-19 14:17:34,246 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:34,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:34,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:34,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:34,250 INFO L87 Difference]: Start difference. First operand 9024 states and 12695 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-19 14:17:36,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:17:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:37,619 INFO L93 Difference]: Finished difference Result 23634 states and 33199 transitions. [2021-11-19 14:17:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:17:37,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 549 [2021-11-19 14:17:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:37,786 INFO L225 Difference]: With dead ends: 23634 [2021-11-19 14:17:37,786 INFO L226 Difference]: Without dead ends: 14703 [2021-11-19 14:17:37,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1096 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:37,849 INFO L933 BasicCegarLoop]: 5228 mSDtfsCounter, 4089 mSDsluCounter, 4361 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 9589 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:37,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4089 Valid, 9589 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 66 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 14:17:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14703 states. [2021-11-19 14:17:38,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14703 to 14682. [2021-11-19 14:17:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14682 states, 9883 states have (on average 1.2731963978549024) internal successors, (12583), 10113 states have internal predecessors, (12583), 4003 states have call successors, (4003), 794 states have call predecessors, (4003), 793 states have return successors, (4003), 3966 states have call predecessors, (4003), 3999 states have call successors, (4003) [2021-11-19 14:17:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14682 states to 14682 states and 20589 transitions. [2021-11-19 14:17:39,010 INFO L78 Accepts]: Start accepts. Automaton has 14682 states and 20589 transitions. Word has length 549 [2021-11-19 14:17:39,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:39,012 INFO L470 AbstractCegarLoop]: Abstraction has 14682 states and 20589 transitions. [2021-11-19 14:17:39,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-19 14:17:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 14682 states and 20589 transitions. [2021-11-19 14:17:39,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2021-11-19 14:17:39,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:39,041 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 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] [2021-11-19 14:17:39,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:17:39,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:17:39,267 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:17:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1502477555, now seen corresponding path program 1 times [2021-11-19 14:17:39,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:39,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381929012] [2021-11-19 14:17:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:39,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:39,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:39,275 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:39,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:17:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:41,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:17:41,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8518 trivial. 0 not checked. [2021-11-19 14:17:42,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8650 trivial. 0 not checked. [2021-11-19 14:17:44,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:44,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381929012] [2021-11-19 14:17:44,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381929012] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:44,044 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:44,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:17:44,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343827443] [2021-11-19 14:17:44,045 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:44,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:17:44,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:44,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:17:44,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:44,049 INFO L87 Difference]: Start difference. First operand 14682 states and 20589 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-19 14:17:46,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:17:47,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:17:47,765 INFO L93 Difference]: Finished difference Result 38677 states and 54049 transitions. [2021-11-19 14:17:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:17:47,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 548 [2021-11-19 14:17:47,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:17:47,959 INFO L225 Difference]: With dead ends: 38677 [2021-11-19 14:17:47,959 INFO L226 Difference]: Without dead ends: 24088 [2021-11-19 14:17:48,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1093 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:17:48,146 INFO L933 BasicCegarLoop]: 5182 mSDtfsCounter, 3585 mSDsluCounter, 4361 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3585 SdHoareTripleChecker+Valid, 9543 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:17:48,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3585 Valid, 9543 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 66 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 14:17:48,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24088 states. [2021-11-19 14:17:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24088 to 24064. [2021-11-19 14:17:49,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24064 states, 16172 states have (on average 1.2666336878555529) internal successors, (20484), 16548 states have internal predecessors, (20484), 6513 states have call successors, (6513), 1377 states have call predecessors, (6513), 1376 states have return successors, (6525), 6451 states have call predecessors, (6525), 6509 states have call successors, (6525) [2021-11-19 14:17:49,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24064 states to 24064 states and 33522 transitions. [2021-11-19 14:17:49,581 INFO L78 Accepts]: Start accepts. Automaton has 24064 states and 33522 transitions. Word has length 548 [2021-11-19 14:17:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:17:49,584 INFO L470 AbstractCegarLoop]: Abstraction has 24064 states and 33522 transitions. [2021-11-19 14:17:49,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-19 14:17:49,584 INFO L276 IsEmpty]: Start isEmpty. Operand 24064 states and 33522 transitions. [2021-11-19 14:17:49,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2021-11-19 14:17:49,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:17:49,605 INFO L514 BasicCegarLoop]: trace histogram [45, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:17:49,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:17:49,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:17:49,823 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:17:49,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:17:49,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1697997184, now seen corresponding path program 1 times [2021-11-19 14:17:49,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:17:49,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129741081] [2021-11-19 14:17:49,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:17:49,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:17:49,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:17:49,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:17:49,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:17:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:17:52,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:17:52,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:17:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8514 trivial. 0 not checked. [2021-11-19 14:17:53,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:17:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2021-11-19 14:17:54,651 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:17:54,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129741081] [2021-11-19 14:17:54,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129741081] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:17:54,651 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:17:54,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:17:54,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526742315] [2021-11-19 14:17:54,653 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:17:54,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:17:54,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:17:54,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:17:54,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:17:54,673 INFO L87 Difference]: Start difference. First operand 24064 states and 33522 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-19 14:17:56,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:18:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:12,601 INFO L93 Difference]: Finished difference Result 87020 states and 121093 transitions. [2021-11-19 14:18:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:18:12,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) Word has length 548 [2021-11-19 14:18:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:13,113 INFO L225 Difference]: With dead ends: 87020 [2021-11-19 14:18:13,113 INFO L226 Difference]: Without dead ends: 63049 [2021-11-19 14:18:13,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1092 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:18:13,223 INFO L933 BasicCegarLoop]: 6416 mSDtfsCounter, 10673 mSDsluCounter, 6710 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 1544 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10673 SdHoareTripleChecker+Valid, 13126 SdHoareTripleChecker+Invalid, 3397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1544 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:13,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10673 Valid, 13126 Invalid, 3397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1544 Valid, 1852 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2021-11-19 14:18:13,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63049 states. [2021-11-19 14:18:16,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63049 to 62965. [2021-11-19 14:18:16,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62965 states, 42426 states have (on average 1.2673360675057748) internal successors, (53768), 43456 states have internal predecessors, (53768), 16844 states have call successors, (16844), 3699 states have call predecessors, (16844), 3692 states have return successors, (16912), 16669 states have call predecessors, (16912), 16840 states have call successors, (16912) [2021-11-19 14:18:17,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62965 states to 62965 states and 87524 transitions. [2021-11-19 14:18:17,377 INFO L78 Accepts]: Start accepts. Automaton has 62965 states and 87524 transitions. Word has length 548 [2021-11-19 14:18:17,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:17,381 INFO L470 AbstractCegarLoop]: Abstraction has 62965 states and 87524 transitions. [2021-11-19 14:18:17,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57) [2021-11-19 14:18:17,381 INFO L276 IsEmpty]: Start isEmpty. Operand 62965 states and 87524 transitions. [2021-11-19 14:18:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2021-11-19 14:18:17,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:17,396 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 44, 44, 44, 44, 44, 44, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:17,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:18:17,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:18:17,613 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:18:17,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:17,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1713237208, now seen corresponding path program 1 times [2021-11-19 14:18:17,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:18:17,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686454026] [2021-11-19 14:18:17,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:17,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:18:17,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:18:17,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:18:17,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:18:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:19,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:18:19,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9098 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 8789 trivial. 0 not checked. [2021-11-19 14:18:21,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:23,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9098 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 9075 trivial. 0 not checked. [2021-11-19 14:18:23,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:18:23,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686454026] [2021-11-19 14:18:23,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686454026] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:18:23,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:18:23,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2021-11-19 14:18:23,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226111354] [2021-11-19 14:18:23,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:23,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:18:23,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:18:23,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:18:23,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:18:23,029 INFO L87 Difference]: Start difference. First operand 62965 states and 87524 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-19 14:18:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:18:31,191 INFO L93 Difference]: Finished difference Result 151287 states and 214803 transitions. [2021-11-19 14:18:31,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:18:31,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) Word has length 581 [2021-11-19 14:18:31,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:18:31,886 INFO L225 Difference]: With dead ends: 151287 [2021-11-19 14:18:31,886 INFO L226 Difference]: Without dead ends: 89993 [2021-11-19 14:18:32,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1166 GetRequests, 1155 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:18:32,407 INFO L933 BasicCegarLoop]: 5897 mSDtfsCounter, 3209 mSDsluCounter, 32638 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 1001 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3459 SdHoareTripleChecker+Valid, 38535 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1001 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:18:32,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3459 Valid, 38535 Invalid, 1527 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1001 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 14:18:32,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89993 states. [2021-11-19 14:18:36,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89993 to 62995. [2021-11-19 14:18:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62995 states, 42456 states have (on average 1.2671000565291124) internal successors, (53796), 43486 states have internal predecessors, (53796), 16844 states have call successors, (16844), 3699 states have call predecessors, (16844), 3692 states have return successors, (16912), 16669 states have call predecessors, (16912), 16840 states have call successors, (16912) [2021-11-19 14:18:36,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62995 states to 62995 states and 87552 transitions. [2021-11-19 14:18:36,837 INFO L78 Accepts]: Start accepts. Automaton has 62995 states and 87552 transitions. Word has length 581 [2021-11-19 14:18:36,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:18:36,839 INFO L470 AbstractCegarLoop]: Abstraction has 62995 states and 87552 transitions. [2021-11-19 14:18:36,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-19 14:18:36,840 INFO L276 IsEmpty]: Start isEmpty. Operand 62995 states and 87552 transitions. [2021-11-19 14:18:36,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2021-11-19 14:18:36,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:18:36,863 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 44, 44, 44, 44, 44, 44, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:18:36,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:18:37,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:18:37,079 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:18:37,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:18:37,079 INFO L85 PathProgramCache]: Analyzing trace with hash 236302099, now seen corresponding path program 1 times [2021-11-19 14:18:37,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:18:37,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214340898] [2021-11-19 14:18:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:18:37,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:18:37,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:18:37,085 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:18:37,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:18:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:18:39,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:18:39,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:18:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9098 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 8796 trivial. 0 not checked. [2021-11-19 14:18:41,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:18:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9098 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9075 trivial. 0 not checked. [2021-11-19 14:18:43,861 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:18:43,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214340898] [2021-11-19 14:18:43,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214340898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:18:43,862 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:18:43,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 17 [2021-11-19 14:18:43,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016938095] [2021-11-19 14:18:43,863 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:18:43,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:18:43,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:18:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:18:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:18:43,866 INFO L87 Difference]: Start difference. First operand 62995 states and 87552 transitions. Second operand has 17 states, 16 states have (on average 8.0625) internal successors, (129), 16 states have internal predecessors, (129), 6 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (60), 6 states have call predecessors, (60), 5 states have call successors, (60) [2021-11-19 14:18:46,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:18:48,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:18:50,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:19:17,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:17,823 INFO L93 Difference]: Finished difference Result 112868 states and 156658 transitions. [2021-11-19 14:19:17,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 14:19:17,824 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 8.0625) internal successors, (129), 16 states have internal predecessors, (129), 6 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (60), 6 states have call predecessors, (60), 5 states have call successors, (60) Word has length 591 [2021-11-19 14:19:17,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:18,878 INFO L225 Difference]: With dead ends: 112868 [2021-11-19 14:19:18,879 INFO L226 Difference]: Without dead ends: 112844 [2021-11-19 14:19:18,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1167 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:19:18,938 INFO L933 BasicCegarLoop]: 7581 mSDtfsCounter, 7847 mSDsluCounter, 75005 mSDsCounter, 0 mSdLazyCounter, 3959 mSolverCounterSat, 1430 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7859 SdHoareTripleChecker+Valid, 82586 SdHoareTripleChecker+Invalid, 5392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 3959 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:18,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7859 Valid, 82586 Invalid, 5392 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1430 Valid, 3959 Invalid, 3 Unknown, 0 Unchecked, 28.1s Time] [2021-11-19 14:19:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112844 states. [2021-11-19 14:19:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112844 to 112499. [2021-11-19 14:19:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112499 states, 75810 states have (on average 1.2652420524996701) internal successors, (95918), 77636 states have internal predecessors, (95918), 30040 states have call successors, (30040), 6655 states have call predecessors, (30040), 6646 states have return successors, (30168), 29729 states have call predecessors, (30168), 30036 states have call successors, (30168) [2021-11-19 14:19:25,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112499 states to 112499 states and 156126 transitions. [2021-11-19 14:19:25,256 INFO L78 Accepts]: Start accepts. Automaton has 112499 states and 156126 transitions. Word has length 591 [2021-11-19 14:19:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:19:25,258 INFO L470 AbstractCegarLoop]: Abstraction has 112499 states and 156126 transitions. [2021-11-19 14:19:25,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 8.0625) internal successors, (129), 16 states have internal predecessors, (129), 6 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (60), 6 states have call predecessors, (60), 5 states have call successors, (60) [2021-11-19 14:19:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 112499 states and 156126 transitions. [2021-11-19 14:19:25,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2021-11-19 14:19:25,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:19:25,308 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 44, 44, 44, 44, 44, 44, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:19:25,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:19:25,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:19:25,524 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-19 14:19:25,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:19:25,525 INFO L85 PathProgramCache]: Analyzing trace with hash -898136248, now seen corresponding path program 1 times [2021-11-19 14:19:25,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:19:25,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361207777] [2021-11-19 14:19:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:19:25,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:19:25,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:19:25,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:19:25,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89212d1a-c090-4c80-8b37-5286864fc158/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:19:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:19:27,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:19:27,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:19:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 9250 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 8935 trivial. 0 not checked. [2021-11-19 14:19:28,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:19:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9250 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9244 trivial. 0 not checked. [2021-11-19 14:19:30,170 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:19:30,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361207777] [2021-11-19 14:19:30,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361207777] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:19:30,171 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:19:30,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:19:30,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921015396] [2021-11-19 14:19:30,172 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:19:30,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:19:30,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:19:30,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:19:30,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:19:30,174 INFO L87 Difference]: Start difference. First operand 112499 states and 156126 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) [2021-11-19 14:19:32,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:19:53,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:19:53,117 INFO L93 Difference]: Finished difference Result 331608 states and 460453 transitions. [2021-11-19 14:19:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:19:53,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 4 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (65), 4 states have call predecessors, (65), 4 states have call successors, (65) Word has length 612 [2021-11-19 14:19:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:19:54,780 INFO L225 Difference]: With dead ends: 331608 [2021-11-19 14:19:54,780 INFO L226 Difference]: Without dead ends: 220780 [2021-11-19 14:19:55,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1222 GetRequests, 1220 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:19:55,131 INFO L933 BasicCegarLoop]: 7821 mSDtfsCounter, 8510 mSDsluCounter, 7605 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8510 SdHoareTripleChecker+Valid, 15426 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:19:55,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8510 Valid, 15426 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1814 Invalid, 1 Unknown, 0 Unchecked, 12.5s Time] [2021-11-19 14:19:55,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220780 states.