./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/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_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 0.2.4-dev-0e0057c [2023-12-02 19:02:17,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:02:17,831 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 19:02:17,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:02:17,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:02:17,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:02:17,862 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:02:17,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:02:17,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:02:17,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:02:17,865 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:02:17,865 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:02:17,866 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:02:17,867 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:02:17,867 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:02:17,868 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:02:17,868 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:02:17,869 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:02:17,869 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:02:17,870 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:02:17,871 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:02:17,872 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:02:17,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:02:17,873 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:02:17,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:02:17,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:02:17,875 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:02:17,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:02:17,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:02:17,876 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:02:17,877 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:02:17,877 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:02:17,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:02:17,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:02:17,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:02:17,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:02:17,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:02:17,879 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:02:17,879 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:02:17,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:02:17,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:02:17,880 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:02:17,880 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:02:17,880 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:02:17,880 INFO L153 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_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4035b79a2162ba317b65ff4b4b50beff318d26f8217214f4a55e9e0e820898d1 [2023-12-02 19:02:18,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:02:18,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:02:18,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:02:18,131 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:02:18,131 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:02:18,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2023-12-02 19:02:21,480 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:02:22,031 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:02:22,031 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2023-12-02 19:02:22,081 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/data/7bda684c6/9e267b59fabc490090fac1eaeead712f/FLAGf1d84a0ee [2023-12-02 19:02:22,095 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/data/7bda684c6/9e267b59fabc490090fac1eaeead712f [2023-12-02 19:02:22,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:02:22,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:02:22,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:02:22,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:02:22,106 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:02:22,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:02:22" (1/1) ... [2023-12-02 19:02:22,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c3815c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:22, skipping insertion in model container [2023-12-02 19:02:22,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:02:22" (1/1) ... [2023-12-02 19:02:22,299 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:02:25,656 WARN L240 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_b56eb4e0-3277-49ce-a91c-18f07f8868e9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2023-12-02 19:02:25,661 WARN L240 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_b56eb4e0-3277-49ce-a91c-18f07f8868e9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2023-12-02 19:02:25,662 WARN L240 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_b56eb4e0-3277-49ce-a91c-18f07f8868e9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2023-12-02 19:02:25,662 WARN L240 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_b56eb4e0-3277-49ce-a91c-18f07f8868e9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2023-12-02 19:02:25,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:02:25,736 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:02:25,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6022] [2023-12-02 19:02:25,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6025] [2023-12-02 19:02:25,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6028] [2023-12-02 19:02:25,864 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6031] [2023-12-02 19:02:25,916 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [7018] [2023-12-02 19:02:25,916 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0": "+m" (v->counter)); [7025] [2023-12-02 19:02:25,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [7032] [2023-12-02 19:02:26,027 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"fs/autofs4/root.c"), "i" (535), "i" (12UL)); [8301-8302] [2023-12-02 19:02:26,044 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"fs/autofs4/root.c"), "i" (718), "i" (12UL)); [8608-8609] [2023-12-02 19:02:26,046 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu), "=r" (__val_gu): "0" (p), "i" (4UL)); [8661-8662] [2023-12-02 19:02:26,047 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8692] [2023-12-02 19:02:26,048 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8695] [2023-12-02 19:02:26,048 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8698] [2023-12-02 19:02:26,048 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8701] [2023-12-02 19:02:26,048 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8704] [2023-12-02 19:02:26,049 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu), "=r" (__val_gu): "0" (p), "i" (8UL)); [8734-8735] [2023-12-02 19:02:26,050 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8765] [2023-12-02 19:02:26,050 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8768] [2023-12-02 19:02:26,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8771] [2023-12-02 19:02:26,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8774] [2023-12-02 19:02:26,052 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8777] [2023-12-02 19:02:26,053 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8824] [2023-12-02 19:02:26,053 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8827] [2023-12-02 19:02:26,053 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8830] [2023-12-02 19:02:26,054 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8833] [2023-12-02 19:02:26,054 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8836] [2023-12-02 19:02:26,055 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8872] [2023-12-02 19:02:26,055 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8875] [2023-12-02 19:02:26,055 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8878] [2023-12-02 19:02:26,056 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8881] [2023-12-02 19:02:26,056 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8884] [2023-12-02 19:02:26,058 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8950] [2023-12-02 19:02:26,058 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8953] [2023-12-02 19:02:26,059 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8956] [2023-12-02 19:02:26,059 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8959] [2023-12-02 19:02:26,059 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (p): "ebx"); [8962] [2023-12-02 19:02:26,079 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [9530] [2023-12-02 19:02:26,079 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [9533] [2023-12-02 19:02:26,080 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [9536] [2023-12-02 19:02:26,080 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [9539] [2023-12-02 19:02:26,081 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/d4e00c1/linux-kernel-locking-mutex/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [9575-9576] [2023-12-02 19:02:26,081 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (44UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [9581-9583] [2023-12-02 19:02:26,082 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/d4e00c1/linux-kernel-locking-mutex/lkbce/arch/x86/include/asm/paravirt.h"), "i" (809), "i" (12UL)); [9608-9609] [2023-12-02 19:02:26,083 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (45UL), [paravirt_opptr] "i" (& pv_irq_ops.restore_fl.func), [paravirt_clobber] "i" (1), "D" (f): "memory", "cc"); [9614-9616] [2023-12-02 19:02:26,084 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/d4e00c1/linux-kernel-locking-mutex/lkbce/arch/x86/include/asm/paravirt.h"), "i" (814), "i" (12UL)); [9640-9641] [2023-12-02 19:02:26,084 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (46UL), [paravirt_opptr] "i" (& pv_irq_ops.irq_disable.func), [paravirt_clobber] "i" (1): "memory", "cc"); [9646-9648] [2023-12-02 19:02:26,085 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; nop": : : "memory"); [9674] [2023-12-02 19:02:26,085 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incq %0": "=m" (v->counter): "m" (v->counter)); [9690] [2023-12-02 19:02:26,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [9746] [2023-12-02 19:02:26,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [9749] [2023-12-02 19:02:26,087 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [9752] [2023-12-02 19:02:26,087 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [9755] [2023-12-02 19:02:26,088 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (__preempt_count)); [9794] [2023-12-02 19:02:26,088 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (__preempt_count)); [9797] [2023-12-02 19:02:26,088 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%P0": "+m" (__preempt_count): "qi" (val)); [9799] [2023-12-02 19:02:26,089 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (__preempt_count)); [9804] [2023-12-02 19:02:26,089 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (__preempt_count)); [9807] [2023-12-02 19:02:26,089 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%P0": "+m" (__preempt_count): "ri" (val)); [9809] [2023-12-02 19:02:26,090 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (__preempt_count)); [9814] [2023-12-02 19:02:26,090 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (__preempt_count)); [9817] [2023-12-02 19:02:26,090 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%P0": "+m" (__preempt_count): "ri" (val)); [9819] [2023-12-02 19:02:26,090 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (__preempt_count)); [9824] [2023-12-02 19:02:26,091 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (__preempt_count)); [9827] [2023-12-02 19:02:26,091 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%P0": "+m" (__preempt_count): "re" (val)); [9829] [2023-12-02 19:02:26,092 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (__preempt_count)); [9867] [2023-12-02 19:02:26,092 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (__preempt_count)); [9870] [2023-12-02 19:02:26,092 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%P0": "+m" (__preempt_count): "qi" (- val)); [9872] [2023-12-02 19:02:26,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (__preempt_count)); [9877] [2023-12-02 19:02:26,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (__preempt_count)); [9880] [2023-12-02 19:02:26,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%P0": "+m" (__preempt_count): "ri" (- val)); [9882] [2023-12-02 19:02:26,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (__preempt_count)); [9887] [2023-12-02 19:02:26,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (__preempt_count)); [9890] [2023-12-02 19:02:26,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%P0": "+m" (__preempt_count): "ri" (- val)); [9892] [2023-12-02 19:02:26,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (__preempt_count)); [9897] [2023-12-02 19:02:26,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (__preempt_count)); [9900] [2023-12-02 19:02:26,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%P0": "+m" (__preempt_count): "re" (- val)); [9902] [2023-12-02 19:02:26,097 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [9986] [2023-12-02 19:02:26,098 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [10017] [2023-12-02 19:02:26,099 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [10052] [2023-12-02 19:02:26,100 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [10061] [2023-12-02 19:02:26,190 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu), "=r" (__val_gu): "0" (arg), "i" (4UL)); [12457-12458] [2023-12-02 19:02:26,191 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [12502] [2023-12-02 19:02:26,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [12505] [2023-12-02 19:02:26,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [12508] [2023-12-02 19:02:26,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [12511] [2023-12-02 19:02:26,274 WARN L240 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_b56eb4e0-3277-49ce-a91c-18f07f8868e9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2023-12-02 19:02:26,275 WARN L240 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_b56eb4e0-3277-49ce-a91c-18f07f8868e9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2023-12-02 19:02:26,275 WARN L240 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_b56eb4e0-3277-49ce-a91c-18f07f8868e9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2023-12-02 19:02:26,276 WARN L240 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_b56eb4e0-3277-49ce-a91c-18f07f8868e9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2023-12-02 19:02:26,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:02:26,468 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:02:26,468 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:02:26,468 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:02:26,469 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:02:26,469 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:02:26,478 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:02:26,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26 WrapperNode [2023-12-02 19:02:26,479 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:02:26,480 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:02:26,480 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:02:26,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:02:26,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26" (1/1) ... [2023-12-02 19:02:26,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26" (1/1) ... [2023-12-02 19:02:26,896 INFO L138 Inliner]: procedures = 518, calls = 3839, calls flagged for inlining = 278, calls inlined = 255, statements flattened = 9671 [2023-12-02 19:02:26,897 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:02:26,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:02:26,898 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:02:26,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:02:26,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26" (1/1) ... [2023-12-02 19:02:26,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26" (1/1) ... [2023-12-02 19:02:26,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26" (1/1) ... [2023-12-02 19:02:26,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26" (1/1) ... [2023-12-02 19:02:27,129 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26" (1/1) ... [2023-12-02 19:02:27,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26" (1/1) ... [2023-12-02 19:02:27,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26" (1/1) ... [2023-12-02 19:02:27,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26" (1/1) ... [2023-12-02 19:02:27,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:02:27,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:02:27,348 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:02:27,348 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:02:27,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26" (1/1) ... [2023-12-02 19:02:27,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:02:27,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:02:27,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:02:27,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56eb4e0-3277-49ce-a91c-18f07f8868e9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:02:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_evict_inode [2023-12-02 19:02:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_evict_inode [2023-12-02 19:02:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2023-12-02 19:02:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2023-12-02 19:02:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 19:02:27,426 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 19:02:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_unlink [2023-12-02 19:02:27,426 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_unlink [2023-12-02 19:02:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wq_mutex_of_autofs_sb_info [2023-12-02 19:02:27,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wq_mutex_of_autofs_sb_info [2023-12-02 19:02:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_get_inode [2023-12-02 19:02:27,426 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_get_inode [2023-12-02 19:02:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-12-02 19:02:27,427 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-12-02 19:02:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 19:02:27,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 19:02:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_lseek [2023-12-02 19:02:27,427 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_lseek [2023-12-02 19:02:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure do_expire_wait [2023-12-02 19:02:27,427 INFO L138 BoogieDeclarations]: Found implementation of procedure do_expire_wait [2023-12-02 19:02:27,427 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2023-12-02 19:02:27,428 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2023-12-02 19:02:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2023-12-02 19:02:27,428 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2023-12-02 19:02:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2023-12-02 19:02:27,428 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2023-12-02 19:02:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure current_kernel_time [2023-12-02 19:02:27,428 INFO L138 BoogieDeclarations]: Found implementation of procedure current_kernel_time [2023-12-02 19:02:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_indirect [2023-12-02 19:02:27,428 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_indirect [2023-12-02 19:02:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2023-12-02 19:02:27,429 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2023-12-02 19:02:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_clear_managed [2023-12-02 19:02:27,429 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_clear_managed [2023-12-02 19:02:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 19:02:27,429 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 19:02:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure from_kgid_munged [2023-12-02 19:02:27,430 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kgid_munged [2023-12-02 19:02:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure follow_down_one [2023-12-02 19:02:27,430 INFO L138 BoogieDeclarations]: Found implementation of procedure follow_down_one [2023-12-02 19:02:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_show_options [2023-12-02 19:02:27,430 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_show_options [2023-12-02 19:02:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure __autofs4_add_expiring [2023-12-02 19:02:27,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __autofs4_add_expiring [2023-12-02 19:02:27,430 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 19:02:27,431 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 19:02:27,431 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_wait [2023-12-02 19:02:27,431 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_wait [2023-12-02 19:02:27,431 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl [2023-12-02 19:02:27,431 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl [2023-12-02 19:02:27,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 19:02:27,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 19:02:27,431 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2023-12-02 19:02:27,432 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2023-12-02 19:02:27,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 19:02:27,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 19:02:27,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2023-12-02 19:02:27,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2023-12-02 19:02:27,432 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 19:02:27,432 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 19:02:27,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:02:27,432 INFO L130 BoogieDeclarations]: Found specification of procedure d_count [2023-12-02 19:02:27,433 INFO L138 BoogieDeclarations]: Found implementation of procedure d_count [2023-12-02 19:02:27,433 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-12-02 19:02:27,433 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-12-02 19:02:27,433 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___4 [2023-12-02 19:02:27,433 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___4 [2023-12-02 19:02:27,433 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___2 [2023-12-02 19:02:27,433 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___2 [2023-12-02 19:02:27,433 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2023-12-02 19:02:27,434 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2023-12-02 19:02:27,434 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 19:02:27,434 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 19:02:27,434 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 19:02:27,434 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 19:02:27,434 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2023-12-02 19:02:27,434 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2023-12-02 19:02:27,434 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_oz_mode [2023-12-02 19:02:27,434 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_oz_mode [2023-12-02 19:02:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_do_expire_multi [2023-12-02 19:02:27,435 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_do_expire_multi [2023-12-02 19:02:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure __task_pid_nr_ns [2023-12-02 19:02:27,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __task_pid_nr_ns [2023-12-02 19:02:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 19:02:27,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 19:02:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_sbi [2023-12-02 19:02:27,435 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_sbi [2023-12-02 19:02:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 19:02:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-12-02 19:02:27,436 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-12-02 19:02:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_new_ino [2023-12-02 19:02:27,436 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_new_ino [2023-12-02 19:02:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure simple_empty [2023-12-02 19:02:27,436 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_empty [2023-12-02 19:02:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 19:02:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 19:02:27,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 19:02:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_can_expire [2023-12-02 19:02:27,437 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_can_expire [2023-12-02 19:02:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_ino [2023-12-02 19:02:27,437 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_ino [2023-12-02 19:02:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:02:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2023-12-02 19:02:27,437 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2023-12-02 19:02:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_open [2023-12-02 19:02:27,438 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_open [2023-12-02 19:02:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 19:02:27,438 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 19:02:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_rmdir [2023-12-02 19:02:27,438 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_rmdir [2023-12-02 19:02:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount [2023-12-02 19:02:27,438 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount [2023-12-02 19:02:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl_exit [2023-12-02 19:02:27,438 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl_exit [2023-12-02 19:02:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2023-12-02 19:02:27,439 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2023-12-02 19:02:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-12-02 19:02:27,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-12-02 19:02:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_open [2023-12-02 19:02:27,439 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_open [2023-12-02 19:02:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-12-02 19:02:27,439 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-12-02 19:02:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure clear_nlink [2023-12-02 19:02:27,440 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_nlink [2023-12-02 19:02:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_trigger [2023-12-02 19:02:27,440 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_trigger [2023-12-02 19:02:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:02:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2023-12-02 19:02:27,440 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2023-12-02 19:02:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-12-02 19:02:27,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-12-02 19:02:27,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-12-02 19:02:27,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-12-02 19:02:27,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2023-12-02 19:02:27,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2023-12-02 19:02:27,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-12-02 19:02:27,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-12-02 19:02:27,441 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2023-12-02 19:02:27,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2023-12-02 19:02:27,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2023-12-02 19:02:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:02:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 19:02:27,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 19:02:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:02:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 19:02:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure simple_positive [2023-12-02 19:02:27,442 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_positive [2023-12-02 19:02:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-12-02 19:02:27,442 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-12-02 19:02:27,442 INFO L130 BoogieDeclarations]: Found specification of procedure path_get [2023-12-02 19:02:27,443 INFO L138 BoogieDeclarations]: Found implementation of procedure path_get [2023-12-02 19:02:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure dget_dlock [2023-12-02 19:02:27,443 INFO L138 BoogieDeclarations]: Found implementation of procedure dget_dlock [2023-12-02 19:02:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure d_lookup [2023-12-02 19:02:27,443 INFO L138 BoogieDeclarations]: Found implementation of procedure d_lookup [2023-12-02 19:02:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-12-02 19:02:27,443 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-12-02 19:02:27,443 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2023-12-02 19:02:27,443 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2023-12-02 19:02:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-12-02 19:02:27,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-12-02 19:02:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2023-12-02 19:02:27,444 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2023-12-02 19:02:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_mount [2023-12-02 19:02:27,444 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_mount [2023-12-02 19:02:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_indirect [2023-12-02 19:02:27,444 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_indirect [2023-12-02 19:02:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:02:27,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:02:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_wait [2023-12-02 19:02:27,445 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_wait [2023-12-02 19:02:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 19:02:27,445 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 19:02:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl [2023-12-02 19:02:27,445 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl [2023-12-02 19:02:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-12-02 19:02:27,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-12-02 19:02:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2023-12-02 19:02:27,446 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2023-12-02 19:02:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2023-12-02 19:02:27,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2023-12-02 19:02:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 19:02:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 19:02:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait_release [2023-12-02 19:02:27,446 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait_release [2023-12-02 19:02:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 19:02:27,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 19:02:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl_unlocked [2023-12-02 19:02:27,447 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl_unlocked [2023-12-02 19:02:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2023-12-02 19:02:27,447 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2023-12-02 19:02:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp [2023-12-02 19:02:27,447 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp [2023-12-02 19:02:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-12-02 19:02:27,447 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-12-02 19:02:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_compat_ioctl [2023-12-02 19:02:27,448 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_compat_ioctl [2023-12-02 19:02:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqretry [2023-12-02 19:02:27,448 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqretry [2023-12-02 19:02:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-12-02 19:02:27,448 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-12-02 19:02:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_readdir [2023-12-02 19:02:27,449 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_readdir [2023-12-02 19:02:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2023-12-02 19:02:27,449 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2023-12-02 19:02:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure seq_printf [2023-12-02 19:02:27,449 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_printf [2023-12-02 19:02:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pipe_mutex_of_autofs_sb_info [2023-12-02 19:02:27,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pipe_mutex_of_autofs_sb_info [2023-12-02 19:02:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount_tree [2023-12-02 19:02:27,450 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount_tree [2023-12-02 19:02:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-12-02 19:02:27,450 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-12-02 19:02:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2023-12-02 19:02:27,450 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2023-12-02 19:02:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 19:02:27,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 19:02:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure get_task_pid [2023-12-02 19:02:27,450 INFO L138 BoogieDeclarations]: Found implementation of procedure get_task_pid [2023-12-02 19:02:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2023-12-02 19:02:27,451 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2023-12-02 19:02:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_busy [2023-12-02 19:02:27,451 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_busy [2023-12-02 19:02:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure d_unhashed [2023-12-02 19:02:27,451 INFO L138 BoogieDeclarations]: Found implementation of procedure d_unhashed [2023-12-02 19:02:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-12-02 19:02:27,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-12-02 19:02:27,451 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_kill_sb [2023-12-02 19:02:27,452 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_kill_sb [2023-12-02 19:02:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:02:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 19:02:27,452 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 19:02:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2023-12-02 19:02:27,452 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2023-12-02 19:02:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2023-12-02 19:02:27,452 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2023-12-02 19:02:27,452 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_set_managed [2023-12-02 19:02:27,453 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_set_managed [2023-12-02 19:02:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:02:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2023-12-02 19:02:27,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2023-12-02 19:02:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2023-12-02 19:02:27,453 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2023-12-02 19:02:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2023-12-02 19:02:27,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2023-12-02 19:02:27,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 19:02:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-12-02 19:02:27,454 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-12-02 19:02:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 19:02:27,454 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 19:02:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 19:02:27,454 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 19:02:27,454 INFO L130 BoogieDeclarations]: Found specification of procedure find_autofs_mount [2023-12-02 19:02:27,454 INFO L138 BoogieDeclarations]: Found implementation of procedure find_autofs_mount [2023-12-02 19:02:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-12-02 19:02:27,455 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-12-02 19:02:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_wq_mutex_of_autofs_sb_info [2023-12-02 19:02:27,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_wq_mutex_of_autofs_sb_info [2023-12-02 19:02:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 19:02:27,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 19:02:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_close [2023-12-02 19:02:27,455 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_close [2023-12-02 19:02:27,455 INFO L130 BoogieDeclarations]: Found specification of procedure ns_of_pid [2023-12-02 19:02:27,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_of_pid [2023-12-02 19:02:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 19:02:27,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 19:02:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 19:02:27,456 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 19:02:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_clean_ino [2023-12-02 19:02:27,456 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_clean_ino [2023-12-02 19:02:27,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wq_mutex_of_autofs_sb_info [2023-12-02 19:02:27,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wq_mutex_of_autofs_sb_info [2023-12-02 19:02:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-12-02 19:02:27,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-12-02 19:02:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure kern_path_mountpoint [2023-12-02 19:02:27,457 INFO L138 BoogieDeclarations]: Found implementation of procedure kern_path_mountpoint [2023-12-02 19:02:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_positive_dentry [2023-12-02 19:02:27,457 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_positive_dentry [2023-12-02 19:02:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 19:02:27,457 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 19:02:27,457 INFO L130 BoogieDeclarations]: Found specification of procedure __managed_dentry_set_managed [2023-12-02 19:02:27,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __managed_dentry_set_managed [2023-12-02 19:02:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-12-02 19:02:27,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-12-02 19:02:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait [2023-12-02 19:02:27,458 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait [2023-12-02 19:02:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_find_wait [2023-12-02 19:02:27,458 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_find_wait [2023-12-02 19:02:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2023-12-02 19:02:27,458 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2023-12-02 19:02:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2023-12-02 19:02:27,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2023-12-02 19:02:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:02:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_release [2023-12-02 19:02:27,459 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_release [2023-12-02 19:02:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp_nr [2023-12-02 19:02:27,459 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp_nr [2023-12-02 19:02:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-12-02 19:02:27,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-12-02 19:02:27,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 19:02:27,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 19:02:27,460 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2023-12-02 19:02:27,460 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2023-12-02 19:02:27,460 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_symlink [2023-12-02 19:02:27,460 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_symlink [2023-12-02 19:02:27,460 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2023-12-02 19:02:27,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2023-12-02 19:02:27,460 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2023-12-02 19:02:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2023-12-02 19:02:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-12-02 19:02:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-12-02 19:02:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure d_mountpoint [2023-12-02 19:02:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure d_mountpoint [2023-12-02 19:02:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2023-12-02 19:02:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2023-12-02 19:02:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure have_submounts [2023-12-02 19:02:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure have_submounts [2023-12-02 19:02:27,462 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2023-12-02 19:02:27,462 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2023-12-02 19:02:27,462 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-12-02 19:02:27,462 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-12-02 19:02:27,462 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-12-02 19:02:27,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-12-02 19:02:27,462 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-12-02 19:02:27,462 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-12-02 19:02:27,462 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_prepare_pipe [2023-12-02 19:02:27,463 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_prepare_pipe [2023-12-02 19:02:27,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 19:02:27,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 19:02:27,463 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_del_active [2023-12-02 19:02:27,463 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_del_active [2023-12-02 19:02:27,463 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 19:02:27,463 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 19:02:27,463 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 19:02:27,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 19:02:27,463 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_nested [2023-12-02 19:02:27,464 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_nested [2023-12-02 19:02:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2023-12-02 19:02:27,464 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2023-12-02 19:02:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:02:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure d_add [2023-12-02 19:02:27,464 INFO L138 BoogieDeclarations]: Found implementation of procedure d_add [2023-12-02 19:02:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_catatonic_mode [2023-12-02 19:02:27,464 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_catatonic_mode [2023-12-02 19:02:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2023-12-02 19:02:27,465 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2023-12-02 19:02:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 19:02:27,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 19:02:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-12-02 19:02:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2023-12-02 19:02:27,465 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2023-12-02 19:02:28,655 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:02:28,661 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:02:28,911 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 19:02:29,499 INFO L775 $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; [2023-12-02 19:02:37,654 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-12-02 19:02:37,944 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:02:40,220 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:02:40,220 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-02 19:02:40,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:02:40 BoogieIcfgContainer [2023-12-02 19:02:40,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:02:40,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:02:40,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:02:40,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:02:40,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:02:22" (1/3) ... [2023-12-02 19:02:40,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422c06bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:02:40, skipping insertion in model container [2023-12-02 19:02:40,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:02:26" (2/3) ... [2023-12-02 19:02:40,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422c06bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:02:40, skipping insertion in model container [2023-12-02 19:02:40,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:02:40" (3/3) ... [2023-12-02 19:02:40,234 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2023-12-02 19:02:40,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:02:40,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-02 19:02:40,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:02:40,384 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35a6a19b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:02:40,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 19:02:40,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 2717 states, 1607 states have (on average 1.3042937149968885) internal successors, (2096), 1655 states have internal predecessors, (2096), 943 states have call successors, (943), 165 states have call predecessors, (943), 164 states have return successors, (932), 926 states have call predecessors, (932), 932 states have call successors, (932) [2023-12-02 19:02:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2023-12-02 19:02:40,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:02:40,458 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:02:40,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:02:40,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:02:40,465 INFO L85 PathProgramCache]: Analyzing trace with hash 284311666, now seen corresponding path program 1 times [2023-12-02 19:02:40,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:02:40,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21569298] [2023-12-02 19:02:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:02:40,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:02:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:02:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2023-12-02 19:02:41,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:02:41,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21569298] [2023-12-02 19:02:41,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21569298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:02:41,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:02:41,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:02:41,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724303272] [2023-12-02 19:02:41,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:02:41,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:02:41,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:02:41,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:02:41,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:02:41,965 INFO L87 Difference]: Start difference. First operand has 2717 states, 1607 states have (on average 1.3042937149968885) internal successors, (2096), 1655 states have internal predecessors, (2096), 943 states have call successors, (943), 165 states have call predecessors, (943), 164 states have return successors, (932), 926 states have call predecessors, (932), 932 states have call successors, (932) Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2023-12-02 19:02:44,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:47,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:49,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:51,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:54,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:02:54,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:02:54,916 INFO L93 Difference]: Finished difference Result 7869 states and 11636 transitions. [2023-12-02 19:02:54,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:02:54,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 465 [2023-12-02 19:02:54,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:02:54,990 INFO L225 Difference]: With dead ends: 7869 [2023-12-02 19:02:54,990 INFO L226 Difference]: Without dead ends: 5225 [2023-12-02 19:02:55,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:02:55,020 INFO L413 NwaCegarLoop]: 3555 mSDtfsCounter, 3734 mSDsluCounter, 3486 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3734 SdHoareTripleChecker+Valid, 7041 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:02:55,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3734 Valid, 7041 Invalid, 851 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 835 Invalid, 5 Unknown, 0 Unchecked, 12.4s Time] [2023-12-02 19:02:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5225 states. [2023-12-02 19:02:55,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5225 to 5221. [2023-12-02 19:02:55,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 3109 states have (on average 1.2994532003859762) internal successors, (4040), 3199 states have internal predecessors, (4040), 1785 states have call successors, (1785), 325 states have call predecessors, (1785), 324 states have return successors, (1781), 1769 states have call predecessors, (1781), 1781 states have call successors, (1781) [2023-12-02 19:02:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 7606 transitions. [2023-12-02 19:02:55,503 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 7606 transitions. Word has length 465 [2023-12-02 19:02:55,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:02:55,507 INFO L495 AbstractCegarLoop]: Abstraction has 5221 states and 7606 transitions. [2023-12-02 19:02:55,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2023-12-02 19:02:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 7606 transitions. [2023-12-02 19:02:55,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2023-12-02 19:02:55,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:02:55,532 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:02:55,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:02:55,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:02:55,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:02:55,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1256160732, now seen corresponding path program 1 times [2023-12-02 19:02:55,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:02:55,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675152187] [2023-12-02 19:02:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:02:55,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:02:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:02:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2023-12-02 19:02:56,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:02:56,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675152187] [2023-12-02 19:02:56,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675152187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:02:56,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:02:56,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:02:56,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742131057] [2023-12-02 19:02:56,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:02:56,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:02:56,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:02:56,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:02:56,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:02:56,447 INFO L87 Difference]: Start difference. First operand 5221 states and 7606 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-12-02 19:02:58,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:01,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:03,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:05,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:08,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:09,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:03:09,333 INFO L93 Difference]: Finished difference Result 12789 states and 18603 transitions. [2023-12-02 19:03:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:03:09,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 490 [2023-12-02 19:03:09,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:03:09,396 INFO L225 Difference]: With dead ends: 12789 [2023-12-02 19:03:09,396 INFO L226 Difference]: Without dead ends: 7657 [2023-12-02 19:03:09,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:03:09,424 INFO L413 NwaCegarLoop]: 3522 mSDtfsCounter, 3630 mSDsluCounter, 3474 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 13 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3630 SdHoareTripleChecker+Valid, 6996 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:03:09,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3630 Valid, 6996 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 870 Invalid, 5 Unknown, 0 Unchecked, 12.4s Time] [2023-12-02 19:03:09,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7657 states. [2023-12-02 19:03:09,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7657 to 7639. [2023-12-02 19:03:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7639 states, 4563 states have (on average 1.2984878369493753) internal successors, (5925), 4699 states have internal predecessors, (5925), 2583 states have call successors, (2583), 491 states have call predecessors, (2583), 490 states have return successors, (2583), 2558 states have call predecessors, (2583), 2579 states have call successors, (2583) [2023-12-02 19:03:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7639 states to 7639 states and 11091 transitions. [2023-12-02 19:03:09,990 INFO L78 Accepts]: Start accepts. Automaton has 7639 states and 11091 transitions. Word has length 490 [2023-12-02 19:03:09,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:03:09,992 INFO L495 AbstractCegarLoop]: Abstraction has 7639 states and 11091 transitions. [2023-12-02 19:03:09,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-12-02 19:03:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 7639 states and 11091 transitions. [2023-12-02 19:03:10,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-12-02 19:03:10,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:03:10,014 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:03:10,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:03:10,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:03:10,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:03:10,015 INFO L85 PathProgramCache]: Analyzing trace with hash -345909114, now seen corresponding path program 1 times [2023-12-02 19:03:10,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:03:10,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217346503] [2023-12-02 19:03:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:03:10,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:03:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:03:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2023-12-02 19:03:10,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:03:10,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217346503] [2023-12-02 19:03:10,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217346503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:03:10,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:03:10,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:03:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336519405] [2023-12-02 19:03:10,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:03:10,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:03:10,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:03:10,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:03:10,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:03:10,742 INFO L87 Difference]: Start difference. First operand 7639 states and 11091 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-12-02 19:03:13,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:15,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:17,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:19,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:22,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:24,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:24,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:03:24,889 INFO L93 Difference]: Finished difference Result 19859 states and 28788 transitions. [2023-12-02 19:03:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:03:24,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 488 [2023-12-02 19:03:24,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:03:25,007 INFO L225 Difference]: With dead ends: 19859 [2023-12-02 19:03:25,008 INFO L226 Difference]: Without dead ends: 12309 [2023-12-02 19:03:25,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:03:25,110 INFO L413 NwaCegarLoop]: 3524 mSDtfsCounter, 3645 mSDsluCounter, 3478 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 13 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3645 SdHoareTripleChecker+Valid, 7002 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:03:25,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3645 Valid, 7002 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 865 Invalid, 6 Unknown, 0 Unchecked, 13.7s Time] [2023-12-02 19:03:25,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12309 states. [2023-12-02 19:03:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12309 to 12285. [2023-12-02 19:03:25,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12285 states, 7358 states have (on average 1.2977711334601794) internal successors, (9549), 7586 states have internal predecessors, (9549), 4107 states have call successors, (4107), 818 states have call predecessors, (4107), 817 states have return successors, (4119), 4064 states have call predecessors, (4119), 4103 states have call successors, (4119) [2023-12-02 19:03:25,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12285 states to 12285 states and 17775 transitions. [2023-12-02 19:03:25,688 INFO L78 Accepts]: Start accepts. Automaton has 12285 states and 17775 transitions. Word has length 488 [2023-12-02 19:03:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:03:25,689 INFO L495 AbstractCegarLoop]: Abstraction has 12285 states and 17775 transitions. [2023-12-02 19:03:25,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-12-02 19:03:25,690 INFO L276 IsEmpty]: Start isEmpty. Operand 12285 states and 17775 transitions. [2023-12-02 19:03:25,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2023-12-02 19:03:25,697 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:03:25,697 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:03:25,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:03:25,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:03:25,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:03:25,699 INFO L85 PathProgramCache]: Analyzing trace with hash -666958810, now seen corresponding path program 1 times [2023-12-02 19:03:25,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:03:25,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336271631] [2023-12-02 19:03:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:03:25,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:03:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:03:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7659 trivial. 0 not checked. [2023-12-02 19:03:26,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:03:26,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336271631] [2023-12-02 19:03:26,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336271631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:03:26,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:03:26,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:03:26,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525453812] [2023-12-02 19:03:26,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:03:26,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:03:26,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:03:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:03:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:03:26,167 INFO L87 Difference]: Start difference. First operand 12285 states and 17775 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-12-02 19:03:29,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:31,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:33,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:35,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:37,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:03:38,606 INFO L93 Difference]: Finished difference Result 31553 states and 45499 transitions. [2023-12-02 19:03:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:03:38,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 493 [2023-12-02 19:03:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:03:38,687 INFO L225 Difference]: With dead ends: 31553 [2023-12-02 19:03:38,687 INFO L226 Difference]: Without dead ends: 19357 [2023-12-02 19:03:38,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:03:38,741 INFO L413 NwaCegarLoop]: 4156 mSDtfsCounter, 3181 mSDsluCounter, 3475 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 13 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3181 SdHoareTripleChecker+Valid, 7631 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:03:38,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3181 Valid, 7631 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 925 Invalid, 5 Unknown, 0 Unchecked, 11.8s Time] [2023-12-02 19:03:38,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19357 states. [2023-12-02 19:03:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19357 to 19339. [2023-12-02 19:03:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19339 states, 11570 states have (on average 1.2912705272255833) internal successors, (14940), 11930 states have internal predecessors, (14940), 6404 states have call successors, (6404), 1366 states have call predecessors, (6404), 1362 states have return successors, (6444), 6330 states have call predecessors, (6444), 6400 states have call successors, (6444) [2023-12-02 19:03:39,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19339 states to 19339 states and 27788 transitions. [2023-12-02 19:03:39,801 INFO L78 Accepts]: Start accepts. Automaton has 19339 states and 27788 transitions. Word has length 493 [2023-12-02 19:03:39,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:03:39,802 INFO L495 AbstractCegarLoop]: Abstraction has 19339 states and 27788 transitions. [2023-12-02 19:03:39,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-12-02 19:03:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 19339 states and 27788 transitions. [2023-12-02 19:03:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-02 19:03:39,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:03:39,814 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:03:39,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:03:39,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:03:39,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:03:39,815 INFO L85 PathProgramCache]: Analyzing trace with hash -788050220, now seen corresponding path program 1 times [2023-12-02 19:03:39,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:03:39,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981853782] [2023-12-02 19:03:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:03:39,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:03:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:03:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7963 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2023-12-02 19:03:41,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:03:41,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981853782] [2023-12-02 19:03:41,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981853782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:03:41,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:03:41,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:03:41,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910696069] [2023-12-02 19:03:41,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:03:41,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:03:41,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:03:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:03:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:03:41,354 INFO L87 Difference]: Start difference. First operand 19339 states and 27788 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-02 19:03:44,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:46,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:48,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:50,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:52,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:03:54,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:03:54,192 INFO L93 Difference]: Finished difference Result 19345 states and 27793 transitions. [2023-12-02 19:03:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:03:54,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 515 [2023-12-02 19:03:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:03:54,260 INFO L225 Difference]: With dead ends: 19345 [2023-12-02 19:03:54,260 INFO L226 Difference]: Without dead ends: 19343 [2023-12-02 19:03:54,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:03:54,270 INFO L413 NwaCegarLoop]: 3518 mSDtfsCounter, 3809 mSDsluCounter, 7029 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3813 SdHoareTripleChecker+Valid, 10547 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:03:54,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3813 Valid, 10547 Invalid, 1232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1226 Invalid, 5 Unknown, 0 Unchecked, 12.1s Time] [2023-12-02 19:03:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19343 states. [2023-12-02 19:03:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19343 to 19343. [2023-12-02 19:03:55,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19343 states, 11573 states have (on average 1.291195022898125) internal successors, (14943), 11933 states have internal predecessors, (14943), 6404 states have call successors, (6404), 1367 states have call predecessors, (6404), 1363 states have return successors, (6444), 6330 states have call predecessors, (6444), 6400 states have call successors, (6444) [2023-12-02 19:03:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19343 states to 19343 states and 27791 transitions. [2023-12-02 19:03:55,714 INFO L78 Accepts]: Start accepts. Automaton has 19343 states and 27791 transitions. Word has length 515 [2023-12-02 19:03:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:03:55,716 INFO L495 AbstractCegarLoop]: Abstraction has 19343 states and 27791 transitions. [2023-12-02 19:03:55,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-02 19:03:55,716 INFO L276 IsEmpty]: Start isEmpty. Operand 19343 states and 27791 transitions. [2023-12-02 19:03:55,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-12-02 19:03:55,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:03:55,733 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:03:55,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:03:55,733 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:03:55,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:03:55,734 INFO L85 PathProgramCache]: Analyzing trace with hash -591085948, now seen corresponding path program 1 times [2023-12-02 19:03:55,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:03:55,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196900989] [2023-12-02 19:03:55,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:03:55,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:03:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:03:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2023-12-02 19:03:57,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:03:57,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196900989] [2023-12-02 19:03:57,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196900989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:03:57,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:03:57,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:03:57,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858507542] [2023-12-02 19:03:57,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:03:57,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:03:57,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:03:57,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:03:57,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:03:57,684 INFO L87 Difference]: Start difference. First operand 19343 states and 27791 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-02 19:04:00,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:02,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:04,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:07,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:09,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:10,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:04:10,580 INFO L93 Difference]: Finished difference Result 19349 states and 27796 transitions. [2023-12-02 19:04:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:04:10,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 520 [2023-12-02 19:04:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:04:10,662 INFO L225 Difference]: With dead ends: 19349 [2023-12-02 19:04:10,662 INFO L226 Difference]: Without dead ends: 19347 [2023-12-02 19:04:10,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:04:10,669 INFO L413 NwaCegarLoop]: 3521 mSDtfsCounter, 3804 mSDsluCounter, 7029 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3807 SdHoareTripleChecker+Valid, 10550 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:04:10,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3807 Valid, 10550 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1226 Invalid, 5 Unknown, 0 Unchecked, 12.1s Time] [2023-12-02 19:04:10,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19347 states. [2023-12-02 19:04:11,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19347 to 19347. [2023-12-02 19:04:11,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19347 states, 11576 states have (on average 1.2911195577055978) internal successors, (14946), 11936 states have internal predecessors, (14946), 6404 states have call successors, (6404), 1368 states have call predecessors, (6404), 1364 states have return successors, (6444), 6330 states have call predecessors, (6444), 6400 states have call successors, (6444) [2023-12-02 19:04:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19347 states to 19347 states and 27794 transitions. [2023-12-02 19:04:11,643 INFO L78 Accepts]: Start accepts. Automaton has 19347 states and 27794 transitions. Word has length 520 [2023-12-02 19:04:11,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:04:11,645 INFO L495 AbstractCegarLoop]: Abstraction has 19347 states and 27794 transitions. [2023-12-02 19:04:11,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-02 19:04:11,645 INFO L276 IsEmpty]: Start isEmpty. Operand 19347 states and 27794 transitions. [2023-12-02 19:04:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-02 19:04:11,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:04:11,664 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 3, 2, 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] [2023-12-02 19:04:11,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:04:11,665 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:04:11,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:04:11,666 INFO L85 PathProgramCache]: Analyzing trace with hash 898020500, now seen corresponding path program 1 times [2023-12-02 19:04:11,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:04:11,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274983889] [2023-12-02 19:04:11,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:04:11,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:04:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:04:13,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7971 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7967 trivial. 0 not checked. [2023-12-02 19:04:13,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:04:13,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274983889] [2023-12-02 19:04:13,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274983889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:04:13,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:04:13,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:04:13,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093119209] [2023-12-02 19:04:13,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:04:13,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:04:13,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:04:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:04:13,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:04:13,397 INFO L87 Difference]: Start difference. First operand 19347 states and 27794 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-02 19:04:16,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:18,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:20,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:21,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:23,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:25,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:04:26,988 INFO L93 Difference]: Finished difference Result 19353 states and 27799 transitions. [2023-12-02 19:04:26,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:04:26,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 525 [2023-12-02 19:04:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:04:27,056 INFO L225 Difference]: With dead ends: 19353 [2023-12-02 19:04:27,056 INFO L226 Difference]: Without dead ends: 19351 [2023-12-02 19:04:27,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:04:27,066 INFO L413 NwaCegarLoop]: 3521 mSDtfsCounter, 3804 mSDsluCounter, 7029 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3806 SdHoareTripleChecker+Valid, 10550 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:04:27,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3806 Valid, 10550 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1226 Invalid, 5 Unknown, 0 Unchecked, 12.7s Time] [2023-12-02 19:04:27,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19351 states. [2023-12-02 19:04:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19351 to 19351. [2023-12-02 19:04:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19351 states, 11579 states have (on average 1.2910441316175836) internal successors, (14949), 11939 states have internal predecessors, (14949), 6404 states have call successors, (6404), 1369 states have call predecessors, (6404), 1365 states have return successors, (6444), 6330 states have call predecessors, (6444), 6400 states have call successors, (6444) [2023-12-02 19:04:28,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19351 states to 19351 states and 27797 transitions. [2023-12-02 19:04:28,343 INFO L78 Accepts]: Start accepts. Automaton has 19351 states and 27797 transitions. Word has length 525 [2023-12-02 19:04:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:04:28,344 INFO L495 AbstractCegarLoop]: Abstraction has 19351 states and 27797 transitions. [2023-12-02 19:04:28,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-02 19:04:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand 19351 states and 27797 transitions. [2023-12-02 19:04:28,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2023-12-02 19:04:28,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:04:28,363 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:04:28,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 19:04:28,364 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:04:28,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:04:28,364 INFO L85 PathProgramCache]: Analyzing trace with hash 602209693, now seen corresponding path program 1 times [2023-12-02 19:04:28,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:04:28,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134516404] [2023-12-02 19:04:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:04:28,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:04:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:04:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8081 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8075 trivial. 0 not checked. [2023-12-02 19:04:29,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:04:29,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134516404] [2023-12-02 19:04:29,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134516404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:04:29,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:04:29,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:04:29,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496182785] [2023-12-02 19:04:29,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:04:29,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:04:29,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:04:29,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:04:29,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:04:29,421 INFO L87 Difference]: Start difference. First operand 19351 states and 27797 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-02 19:04:32,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:34,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:36,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:38,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:40,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:42,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:04:43,966 INFO L93 Difference]: Finished difference Result 19437 states and 27874 transitions. [2023-12-02 19:04:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:04:43,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 540 [2023-12-02 19:04:43,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:04:44,033 INFO L225 Difference]: With dead ends: 19437 [2023-12-02 19:04:44,033 INFO L226 Difference]: Without dead ends: 19433 [2023-12-02 19:04:44,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:04:44,041 INFO L413 NwaCegarLoop]: 3520 mSDtfsCounter, 3789 mSDsluCounter, 7043 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3790 SdHoareTripleChecker+Valid, 10563 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:04:44,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3790 Valid, 10563 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1235 Invalid, 6 Unknown, 0 Unchecked, 13.6s Time] [2023-12-02 19:04:44,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19433 states. [2023-12-02 19:04:45,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19433 to 19431. [2023-12-02 19:04:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19431 states, 11629 states have (on average 1.2904806948146874) internal successors, (15007), 11988 states have internal predecessors, (15007), 6411 states have call successors, (6411), 1393 states have call predecessors, (6411), 1388 states have return successors, (6451), 6337 states have call predecessors, (6451), 6407 states have call successors, (6451) [2023-12-02 19:04:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19431 states to 19431 states and 27869 transitions. [2023-12-02 19:04:45,245 INFO L78 Accepts]: Start accepts. Automaton has 19431 states and 27869 transitions. Word has length 540 [2023-12-02 19:04:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:04:45,246 INFO L495 AbstractCegarLoop]: Abstraction has 19431 states and 27869 transitions. [2023-12-02 19:04:45,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2023-12-02 19:04:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 19431 states and 27869 transitions. [2023-12-02 19:04:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-12-02 19:04:45,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:04:45,264 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:04:45,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 19:04:45,264 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:04:45,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:04:45,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1338219092, now seen corresponding path program 1 times [2023-12-02 19:04:45,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:04:45,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420015572] [2023-12-02 19:04:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:04:45,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:04:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:04:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7995 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7987 trivial. 0 not checked. [2023-12-02 19:04:46,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:04:46,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420015572] [2023-12-02 19:04:46,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420015572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:04:46,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:04:46,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:04:46,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100668022] [2023-12-02 19:04:46,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:04:46,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:04:46,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:04:46,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:04:46,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:04:46,495 INFO L87 Difference]: Start difference. First operand 19431 states and 27869 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-02 19:04:49,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:51,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:53,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:55,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:04:57,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:00,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:03,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:05,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:07,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:09,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:13,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:15,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:15,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:05:15,956 INFO L93 Difference]: Finished difference Result 35717 states and 51528 transitions. [2023-12-02 19:05:15,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:05:15,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 535 [2023-12-02 19:05:15,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:05:16,093 INFO L225 Difference]: With dead ends: 35717 [2023-12-02 19:05:16,093 INFO L226 Difference]: Without dead ends: 35545 [2023-12-02 19:05:16,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:05:16,113 INFO L413 NwaCegarLoop]: 3528 mSDtfsCounter, 3527 mSDsluCounter, 10235 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 3 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 13763 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:05:16,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3527 Valid, 13763 Invalid, 1640 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1625 Invalid, 12 Unknown, 0 Unchecked, 27.6s Time] [2023-12-02 19:05:16,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35545 states. [2023-12-02 19:05:18,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35545 to 35525. [2023-12-02 19:05:18,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35525 states, 21214 states have (on average 1.2918355802771755) internal successors, (27405), 21911 states have internal predecessors, (27405), 11722 states have call successors, (11722), 2622 states have call predecessors, (11722), 2586 states have return successors, (12089), 11520 states have call predecessors, (12089), 11718 states have call successors, (12089) [2023-12-02 19:05:18,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35525 states to 35525 states and 51216 transitions. [2023-12-02 19:05:18,433 INFO L78 Accepts]: Start accepts. Automaton has 35525 states and 51216 transitions. Word has length 535 [2023-12-02 19:05:18,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:05:18,433 INFO L495 AbstractCegarLoop]: Abstraction has 35525 states and 51216 transitions. [2023-12-02 19:05:18,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-02 19:05:18,433 INFO L276 IsEmpty]: Start isEmpty. Operand 35525 states and 51216 transitions. [2023-12-02 19:05:18,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2023-12-02 19:05:18,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:05:18,450 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:05:18,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 19:05:18,451 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:05:18,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:05:18,451 INFO L85 PathProgramCache]: Analyzing trace with hash -570656417, now seen corresponding path program 1 times [2023-12-02 19:05:18,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:05:18,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732429634] [2023-12-02 19:05:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:18,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:05:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:05:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8076 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8073 trivial. 0 not checked. [2023-12-02 19:05:18,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:05:18,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732429634] [2023-12-02 19:05:18,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732429634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:05:18,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:05:18,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:05:18,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377005048] [2023-12-02 19:05:18,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:05:18,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:05:18,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:05:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:05:18,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:05:18,871 INFO L87 Difference]: Start difference. First operand 35525 states and 51216 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2023-12-02 19:05:21,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:23,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:26,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:28,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:30,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:33,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:05:33,382 INFO L93 Difference]: Finished difference Result 83069 states and 119793 transitions. [2023-12-02 19:05:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:05:33,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 554 [2023-12-02 19:05:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:05:33,531 INFO L225 Difference]: With dead ends: 83069 [2023-12-02 19:05:33,531 INFO L226 Difference]: Without dead ends: 50054 [2023-12-02 19:05:33,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:05:33,605 INFO L413 NwaCegarLoop]: 6356 mSDtfsCounter, 3176 mSDsluCounter, 3468 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3176 SdHoareTripleChecker+Valid, 9824 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:05:33,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3176 Valid, 9824 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1205 Invalid, 5 Unknown, 0 Unchecked, 11.9s Time] [2023-12-02 19:05:33,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50054 states. [2023-12-02 19:05:36,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50054 to 50022. [2023-12-02 19:05:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50022 states, 29839 states have (on average 1.2899560977244546) internal successors, (38491), 30814 states have internal predecessors, (38491), 16486 states have call successors, (16486), 3747 states have call predecessors, (16486), 3694 states have return successors, (17018), 16202 states have call predecessors, (17018), 16482 states have call successors, (17018) [2023-12-02 19:05:36,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50022 states to 50022 states and 71995 transitions. [2023-12-02 19:05:36,537 INFO L78 Accepts]: Start accepts. Automaton has 50022 states and 71995 transitions. Word has length 554 [2023-12-02 19:05:36,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:05:36,537 INFO L495 AbstractCegarLoop]: Abstraction has 50022 states and 71995 transitions. [2023-12-02 19:05:36,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2023-12-02 19:05:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand 50022 states and 71995 transitions. [2023-12-02 19:05:36,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-02 19:05:36,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:05:36,549 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:05:36,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 19:05:36,550 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:05:36,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:05:36,550 INFO L85 PathProgramCache]: Analyzing trace with hash 658902310, now seen corresponding path program 1 times [2023-12-02 19:05:36,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:05:36,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281730392] [2023-12-02 19:05:36,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:05:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:05:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8049 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8046 trivial. 0 not checked. [2023-12-02 19:05:37,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:05:37,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281730392] [2023-12-02 19:05:37,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281730392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:05:37,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:05:37,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:05:37,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791988778] [2023-12-02 19:05:37,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:05:37,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:05:37,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:05:37,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:05:37,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:05:37,144 INFO L87 Difference]: Start difference. First operand 50022 states and 71995 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2023-12-02 19:05:38,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:40,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:43,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:45,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:47,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:50,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:53,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:05:53,949 INFO L93 Difference]: Finished difference Result 119562 states and 172159 transitions. [2023-12-02 19:05:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:05:53,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 555 [2023-12-02 19:05:53,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:05:54,324 INFO L225 Difference]: With dead ends: 119562 [2023-12-02 19:05:54,324 INFO L226 Difference]: Without dead ends: 72050 [2023-12-02 19:05:54,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:05:54,437 INFO L413 NwaCegarLoop]: 6771 mSDtfsCounter, 3639 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3639 SdHoareTripleChecker+Valid, 10242 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:05:54,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3639 Valid, 10242 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1248 Invalid, 5 Unknown, 0 Unchecked, 13.1s Time] [2023-12-02 19:05:54,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72050 states. [2023-12-02 19:05:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72050 to 71988. [2023-12-02 19:05:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71988 states, 42975 states have (on average 1.2898662012798139) internal successors, (55432), 44391 states have internal predecessors, (55432), 23656 states have call successors, (23656), 5433 states have call predecessors, (23656), 5354 states have return successors, (24428), 23243 states have call predecessors, (24428), 23652 states have call successors, (24428) [2023-12-02 19:05:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71988 states to 71988 states and 103516 transitions. [2023-12-02 19:05:59,468 INFO L78 Accepts]: Start accepts. Automaton has 71988 states and 103516 transitions. Word has length 555 [2023-12-02 19:05:59,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:05:59,469 INFO L495 AbstractCegarLoop]: Abstraction has 71988 states and 103516 transitions. [2023-12-02 19:05:59,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2023-12-02 19:05:59,469 INFO L276 IsEmpty]: Start isEmpty. Operand 71988 states and 103516 transitions. [2023-12-02 19:05:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-12-02 19:05:59,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:05:59,483 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:05:59,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 19:05:59,484 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:05:59,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:05:59,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1076971234, now seen corresponding path program 1 times [2023-12-02 19:05:59,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:05:59,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138305443] [2023-12-02 19:05:59,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:59,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:05:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:06:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8049 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8046 trivial. 0 not checked. [2023-12-02 19:06:00,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:06:00,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138305443] [2023-12-02 19:06:00,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138305443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:06:00,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:06:00,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:06:00,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287307552] [2023-12-02 19:06:00,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:06:00,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:06:00,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:06:00,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:06:00,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:06:00,147 INFO L87 Difference]: Start difference. First operand 71988 states and 103516 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2023-12-02 19:06:02,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:05,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:08,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:10,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:13,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:17,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:06:17,672 INFO L93 Difference]: Finished difference Result 172694 states and 248343 transitions. [2023-12-02 19:06:17,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:06:17,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 553 [2023-12-02 19:06:17,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:06:18,015 INFO L225 Difference]: With dead ends: 172694 [2023-12-02 19:06:18,016 INFO L226 Difference]: Without dead ends: 103216 [2023-12-02 19:06:18,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:06:18,190 INFO L413 NwaCegarLoop]: 6754 mSDtfsCounter, 3624 mSDsluCounter, 3467 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3624 SdHoareTripleChecker+Valid, 10221 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:06:18,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3624 Valid, 10221 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1253 Invalid, 5 Unknown, 0 Unchecked, 12.5s Time] [2023-12-02 19:06:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103216 states. [2023-12-02 19:06:24,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103216 to 103184. [2023-12-02 19:06:24,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103184 states, 61661 states have (on average 1.2894374077617943) internal successors, (79508), 63713 states have internal predecessors, (79508), 33776 states have call successors, (33776), 7863 states have call predecessors, (33776), 7744 states have return successors, (34871), 33177 states have call predecessors, (34871), 33772 states have call successors, (34871) [2023-12-02 19:06:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103184 states to 103184 states and 148155 transitions. [2023-12-02 19:06:24,581 INFO L78 Accepts]: Start accepts. Automaton has 103184 states and 148155 transitions. Word has length 553 [2023-12-02 19:06:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:06:24,581 INFO L495 AbstractCegarLoop]: Abstraction has 103184 states and 148155 transitions. [2023-12-02 19:06:24,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2023-12-02 19:06:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 103184 states and 148155 transitions. [2023-12-02 19:06:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-12-02 19:06:24,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:06:24,593 INFO L195 NwaCegarLoop]: trace histogram [46, 45, 45, 45, 45, 45, 45, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:06:24,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 19:06:24,593 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:06:24,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:06:24,593 INFO L85 PathProgramCache]: Analyzing trace with hash 2134178228, now seen corresponding path program 1 times [2023-12-02 19:06:24,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:06:24,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463589562] [2023-12-02 19:06:24,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:06:24,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:06:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:06:25,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8028 trivial. 0 not checked. [2023-12-02 19:06:25,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:06:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463589562] [2023-12-02 19:06:25,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463589562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:06:25,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:06:25,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:06:25,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703316797] [2023-12-02 19:06:25,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:06:25,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:06:25,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:06:25,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:06:25,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:06:25,043 INFO L87 Difference]: Start difference. First operand 103184 states and 148155 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2023-12-02 19:06:27,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:31,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:33,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:35,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:37,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:46,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:06:46,550 INFO L93 Difference]: Finished difference Result 286874 states and 410357 transitions. [2023-12-02 19:06:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:06:46,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) Word has length 567 [2023-12-02 19:06:46,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:06:47,475 INFO L225 Difference]: With dead ends: 286874 [2023-12-02 19:06:47,475 INFO L226 Difference]: Without dead ends: 183779 [2023-12-02 19:06:47,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:06:47,806 INFO L413 NwaCegarLoop]: 4138 mSDtfsCounter, 3423 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3423 SdHoareTripleChecker+Valid, 7643 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:06:47,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3423 Valid, 7643 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 891 Invalid, 5 Unknown, 0 Unchecked, 12.6s Time] [2023-12-02 19:06:47,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183779 states. [2023-12-02 19:06:58,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183779 to 183639. [2023-12-02 19:06:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183639 states, 109661 states have (on average 1.285826319293094) internal successors, (141005), 113221 states have internal predecessors, (141005), 59614 states have call successors, (59614), 14587 states have call predecessors, (59614), 14361 states have return successors, (61304), 58523 states have call predecessors, (61304), 59610 states have call successors, (61304) [2023-12-02 19:07:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183639 states to 183639 states and 261923 transitions. [2023-12-02 19:07:00,140 INFO L78 Accepts]: Start accepts. Automaton has 183639 states and 261923 transitions. Word has length 567 [2023-12-02 19:07:00,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:07:00,141 INFO L495 AbstractCegarLoop]: Abstraction has 183639 states and 261923 transitions. [2023-12-02 19:07:00,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2023-12-02 19:07:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand 183639 states and 261923 transitions. [2023-12-02 19:07:00,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2023-12-02 19:07:00,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:07:00,175 INFO L195 NwaCegarLoop]: trace histogram [52, 44, 44, 44, 44, 44, 44, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:07:00,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 19:07:00,175 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:07:00,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:07:00,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1032331686, now seen corresponding path program 1 times [2023-12-02 19:07:00,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:07:00,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833269268] [2023-12-02 19:07:00,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:07:00,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:07:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:07:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8509 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 8493 trivial. 0 not checked. [2023-12-02 19:07:00,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:07:00,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833269268] [2023-12-02 19:07:00,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833269268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:07:00,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:07:00,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:07:00,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87664529] [2023-12-02 19:07:00,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:07:00,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:07:00,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:07:00,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:07:00,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:07:00,820 INFO L87 Difference]: Start difference. First operand 183639 states and 261923 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-02 19:07:03,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:05,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:09,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:11,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:13,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:17,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:19,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:07:32,197 INFO L93 Difference]: Finished difference Result 430183 states and 611500 transitions. [2023-12-02 19:07:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:07:32,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 612 [2023-12-02 19:07:32,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:07:33,289 INFO L225 Difference]: With dead ends: 430183 [2023-12-02 19:07:33,289 INFO L226 Difference]: Without dead ends: 247283 [2023-12-02 19:07:33,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:07:33,883 INFO L413 NwaCegarLoop]: 6513 mSDtfsCounter, 3648 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 85 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3648 SdHoareTripleChecker+Valid, 11324 SdHoareTripleChecker+Invalid, 3175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:07:33,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3648 Valid, 11324 Invalid, 3175 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3083 Invalid, 7 Unknown, 0 Unchecked, 18.7s Time] [2023-12-02 19:07:34,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247283 states. [2023-12-02 19:07:47,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247283 to 247251. [2023-12-02 19:07:48,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247251 states, 147134 states have (on average 1.2812810091481235) internal successors, (188520), 151894 states have internal predecessors, (188520), 79784 states have call successors, (79784), 20632 states have call predecessors, (79784), 20330 states have return successors, (81990), 78379 states have call predecessors, (81990), 79780 states have call successors, (81990) [2023-12-02 19:07:49,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247251 states to 247251 states and 350294 transitions. [2023-12-02 19:07:49,687 INFO L78 Accepts]: Start accepts. Automaton has 247251 states and 350294 transitions. Word has length 612 [2023-12-02 19:07:49,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:07:49,688 INFO L495 AbstractCegarLoop]: Abstraction has 247251 states and 350294 transitions. [2023-12-02 19:07:49,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2023-12-02 19:07:49,689 INFO L276 IsEmpty]: Start isEmpty. Operand 247251 states and 350294 transitions. [2023-12-02 19:07:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2023-12-02 19:07:49,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:07:49,726 INFO L195 NwaCegarLoop]: trace histogram [52, 44, 44, 44, 44, 44, 44, 8, 8, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:07:49,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 19:07:49,726 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:07:49,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:07:49,727 INFO L85 PathProgramCache]: Analyzing trace with hash 375377260, now seen corresponding path program 1 times [2023-12-02 19:07:49,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:07:49,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022402313] [2023-12-02 19:07:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:07:49,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:07:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:07:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8436 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8436 trivial. 0 not checked. [2023-12-02 19:07:51,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:07:51,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022402313] [2023-12-02 19:07:51,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022402313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:07:51,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:07:51,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:07:51,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728824162] [2023-12-02 19:07:51,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:07:51,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:07:51,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:07:51,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:07:51,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:07:51,067 INFO L87 Difference]: Start difference. First operand 247251 states and 350294 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2023-12-02 19:07:53,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:56,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:11,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:08:11,745 INFO L93 Difference]: Finished difference Result 493667 states and 699398 transitions. [2023-12-02 19:08:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:08:11,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) Word has length 611 [2023-12-02 19:08:11,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:08:12,976 INFO L225 Difference]: With dead ends: 493667 [2023-12-02 19:08:12,976 INFO L226 Difference]: Without dead ends: 247155 [2023-12-02 19:08:13,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:08:13,529 INFO L413 NwaCegarLoop]: 3517 mSDtfsCounter, 3795 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3795 SdHoareTripleChecker+Valid, 3517 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:08:13,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3795 Valid, 3517 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 404 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2023-12-02 19:08:13,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247155 states. [2023-12-02 19:08:29,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247155 to 247155. [2023-12-02 19:08:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247155 states, 147086 states have (on average 1.281046462613709) internal successors, (188424), 151846 states have internal predecessors, (188424), 79736 states have call successors, (79736), 20632 states have call predecessors, (79736), 20330 states have return successors, (81894), 78331 states have call predecessors, (81894), 79732 states have call successors, (81894) [2023-12-02 19:08:30,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247155 states to 247155 states and 350054 transitions. [2023-12-02 19:08:30,780 INFO L78 Accepts]: Start accepts. Automaton has 247155 states and 350054 transitions. Word has length 611 [2023-12-02 19:08:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:08:30,780 INFO L495 AbstractCegarLoop]: Abstraction has 247155 states and 350054 transitions. [2023-12-02 19:08:30,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2023-12-02 19:08:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 247155 states and 350054 transitions. [2023-12-02 19:08:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2023-12-02 19:08:30,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:08:30,810 INFO L195 NwaCegarLoop]: trace histogram [52, 44, 44, 44, 44, 44, 44, 8, 8, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:08:30,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 19:08:30,811 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:08:30,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:08:30,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1729277396, now seen corresponding path program 1 times [2023-12-02 19:08:30,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:08:30,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172825679] [2023-12-02 19:08:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:08:30,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:08:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:08:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8437 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8437 trivial. 0 not checked. [2023-12-02 19:08:32,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:08:32,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172825679] [2023-12-02 19:08:32,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172825679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:08:32,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:08:32,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 19:08:32,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040515532] [2023-12-02 19:08:32,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:08:32,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:08:32,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:08:32,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:08:32,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:08:32,396 INFO L87 Difference]: Start difference. First operand 247155 states and 350054 transitions. Second operand has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 6 states have internal predecessors, (132), 6 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-12-02 19:08:35,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:37,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:39,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:41,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:43,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:45,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:48,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:50,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:52,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:54,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:56,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:58,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []