./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-spinlock_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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/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_d42d418c-de01-4561-bb2c-4691e0033309/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/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_d42d418c-de01-4561-bb2c-4691e0033309/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 ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:01:19,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:01:19,280 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 13:01:19,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:01:19,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:01:19,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:01:19,317 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:01:19,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:01:19,318 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:01:19,319 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:01:19,319 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:01:19,320 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:01:19,321 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:01:19,321 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:01:19,322 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:01:19,322 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:01:19,323 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:01:19,323 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:01:19,324 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:01:19,324 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:01:19,325 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:01:19,325 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:01:19,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:01:19,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:01:19,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:01:19,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:01:19,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:01:19,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:01:19,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:01:19,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:01:19,330 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:01:19,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:01:19,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:01:19,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:01:19,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:01:19,331 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:01:19,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:01:19,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:01:19,332 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:01:19,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:01:19,332 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:01:19,333 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:01:19,333 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:01:19,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:01:19,333 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_d42d418c-de01-4561-bb2c-4691e0033309/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 [2023-12-02 13:01:19,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:01:19,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:01:19,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:01:19,583 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:01:19,584 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:01:19,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2023-12-02 13:01:22,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:01:22,860 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:01:22,861 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2023-12-02 13:01:22,906 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/bin/utaipan-verify-nQ1chXbOIh/data/a760e4028/cc0c4b13bf504c5db2f12dbb86c961d8/FLAG54853adc9 [2023-12-02 13:01:22,921 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/bin/utaipan-verify-nQ1chXbOIh/data/a760e4028/cc0c4b13bf504c5db2f12dbb86c961d8 [2023-12-02 13:01:22,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:01:22,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:01:22,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:01:22,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:01:22,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:01:22,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:01:22" (1/1) ... [2023-12-02 13:01:22,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3818661a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:22, skipping insertion in model container [2023-12-02 13:01:22,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:01:22" (1/1) ... [2023-12-02 13:01:23,113 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:01:26,226 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_d42d418c-de01-4561-bb2c-4691e0033309/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2023-12-02 13:01:26,230 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_d42d418c-de01-4561-bb2c-4691e0033309/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2023-12-02 13:01:26,231 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_d42d418c-de01-4561-bb2c-4691e0033309/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2023-12-02 13:01:26,231 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_d42d418c-de01-4561-bb2c-4691e0033309/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2023-12-02 13:01:26,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:01:26,297 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:01:26,447 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6019] [2023-12-02 13:01:26,448 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6022] [2023-12-02 13:01:26,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6025] [2023-12-02 13:01:26,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6028] [2023-12-02 13:01:26,501 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)); [7015] [2023-12-02 13:01:26,501 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)); [7022] [2023-12-02 13:01:26,501 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [7029] [2023-12-02 13:01:26,550 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)); [8347-8348] [2023-12-02 13:01:26,566 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)); [8654-8655] [2023-12-02 13:01:26,569 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)); [8707-8708] [2023-12-02 13:01:26,570 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"); [8738] [2023-12-02 13:01:26,570 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"); [8741] [2023-12-02 13:01:26,571 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"); [8744] [2023-12-02 13:01:26,571 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"); [8747] [2023-12-02 13:01:26,571 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"); [8750] [2023-12-02 13:01:26,572 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)); [8780-8781] [2023-12-02 13:01:26,573 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"); [8811] [2023-12-02 13:01:26,573 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"); [8814] [2023-12-02 13:01:26,574 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"); [8817] [2023-12-02 13:01:26,574 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"); [8820] [2023-12-02 13:01:26,574 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"); [8823] [2023-12-02 13:01:26,575 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"); [8870] [2023-12-02 13:01:26,576 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"); [8873] [2023-12-02 13:01:26,576 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"); [8876] [2023-12-02 13:01:26,576 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"); [8879] [2023-12-02 13:01:26,576 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"); [8882] [2023-12-02 13:01:26,577 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"); [8918] [2023-12-02 13:01:26,577 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"); [8921] [2023-12-02 13:01:26,578 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"); [8924] [2023-12-02 13:01:26,578 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"); [8927] [2023-12-02 13:01:26,578 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"); [8930] [2023-12-02 13:01:26,580 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"); [8996] [2023-12-02 13:01:26,580 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"); [8999] [2023-12-02 13:01:26,581 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"); [9002] [2023-12-02 13:01:26,581 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"); [9005] [2023-12-02 13:01:26,581 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"); [9008] [2023-12-02 13:01:26,619 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/f860c18/linux-kernel-locking-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [9626-9627] [2023-12-02 13:01:26,619 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"); [9632-9634] [2023-12-02 13:01:26,620 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/f860c18/linux-kernel-locking-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (809), "i" (12UL)); [9659-9660] [2023-12-02 13:01:26,620 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"); [9665-9667] [2023-12-02 13:01:26,621 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/f860c18/linux-kernel-locking-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (814), "i" (12UL)); [9691-9692] [2023-12-02 13:01:26,621 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"); [9697-9699] [2023-12-02 13:01:26,622 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; nop": : : "memory"); [9725] [2023-12-02 13:01:26,622 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)); [9741] [2023-12-02 13:01:26,623 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [9794] [2023-12-02 13:01:26,623 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [9797] [2023-12-02 13:01:26,624 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [9800] [2023-12-02 13:01:26,624 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [9803] [2023-12-02 13:01:26,625 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (__preempt_count)); [9842] [2023-12-02 13:01:26,625 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (__preempt_count)); [9845] [2023-12-02 13:01:26,625 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%P0": "+m" (__preempt_count): "qi" (val)); [9847] [2023-12-02 13:01:26,625 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (__preempt_count)); [9852] [2023-12-02 13:01:26,626 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (__preempt_count)); [9855] [2023-12-02 13:01:26,626 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%P0": "+m" (__preempt_count): "ri" (val)); [9857] [2023-12-02 13:01:26,626 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (__preempt_count)); [9862] [2023-12-02 13:01:26,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (__preempt_count)); [9865] [2023-12-02 13:01:26,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%P0": "+m" (__preempt_count): "ri" (val)); [9867] [2023-12-02 13:01:26,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (__preempt_count)); [9872] [2023-12-02 13:01:26,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (__preempt_count)); [9875] [2023-12-02 13:01:26,628 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%P0": "+m" (__preempt_count): "re" (val)); [9877] [2023-12-02 13:01:26,628 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (__preempt_count)); [9915] [2023-12-02 13:01:26,629 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (__preempt_count)); [9918] [2023-12-02 13:01:26,629 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%P0": "+m" (__preempt_count): "qi" (- val)); [9920] [2023-12-02 13:01:26,629 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (__preempt_count)); [9925] [2023-12-02 13:01:26,629 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (__preempt_count)); [9928] [2023-12-02 13:01:26,630 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%P0": "+m" (__preempt_count): "ri" (- val)); [9930] [2023-12-02 13:01:26,630 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (__preempt_count)); [9935] [2023-12-02 13:01:26,630 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (__preempt_count)); [9938] [2023-12-02 13:01:26,630 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%P0": "+m" (__preempt_count): "ri" (- val)); [9940] [2023-12-02 13:01:26,631 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (__preempt_count)); [9945] [2023-12-02 13:01:26,631 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (__preempt_count)); [9948] [2023-12-02 13:01:26,631 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%P0": "+m" (__preempt_count): "re" (- val)); [9950] [2023-12-02 13:01:26,633 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [10041] [2023-12-02 13:01:26,634 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [10072] [2023-12-02 13:01:26,635 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [10107] [2023-12-02 13:01:26,635 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [10116] [2023-12-02 13:01:26,716 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)); [12416-12417] [2023-12-02 13:01:26,774 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_d42d418c-de01-4561-bb2c-4691e0033309/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2023-12-02 13:01:26,774 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_d42d418c-de01-4561-bb2c-4691e0033309/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2023-12-02 13:01:26,775 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_d42d418c-de01-4561-bb2c-4691e0033309/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2023-12-02 13:01:26,775 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_d42d418c-de01-4561-bb2c-4691e0033309/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2023-12-02 13:01:26,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:01:26,986 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:01:26,987 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:01:26,987 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:01:26,987 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:01:26,987 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:01:26,994 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:01:26,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26 WrapperNode [2023-12-02 13:01:26,995 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:01:26,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:01:26,996 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:01:26,996 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:01:27,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26" (1/1) ... [2023-12-02 13:01:27,101 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26" (1/1) ... [2023-12-02 13:01:27,375 INFO L138 Inliner]: procedures = 553, calls = 3918, calls flagged for inlining = 272, calls inlined = 248, statements flattened = 9555 [2023-12-02 13:01:27,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:01:27,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:01:27,377 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:01:27,377 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:01:27,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26" (1/1) ... [2023-12-02 13:01:27,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26" (1/1) ... [2023-12-02 13:01:27,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26" (1/1) ... [2023-12-02 13:01:27,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26" (1/1) ... [2023-12-02 13:01:27,575 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26" (1/1) ... [2023-12-02 13:01:27,602 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26" (1/1) ... [2023-12-02 13:01:27,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26" (1/1) ... [2023-12-02 13:01:27,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26" (1/1) ... [2023-12-02 13:01:27,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:01:27,768 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:01:27,768 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:01:27,768 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:01:27,769 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26" (1/1) ... [2023-12-02 13:01:27,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:01:27,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:27,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:01:27,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d42d418c-de01-4561-bb2c-4691e0033309/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:01:27,823 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_evict_inode [2023-12-02 13:01:27,823 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_evict_inode [2023-12-02 13:01:27,823 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2023-12-02 13:01:27,824 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2023-12-02 13:01:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 13:01:27,824 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 13:01:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_unlink [2023-12-02 13:01:27,824 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_unlink [2023-12-02 13:01:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_get_inode [2023-12-02 13:01:27,824 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_get_inode [2023-12-02 13:01:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-12-02 13:01:27,825 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-12-02 13:01:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 13:01:27,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 13:01:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_lseek [2023-12-02 13:01:27,825 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_lseek [2023-12-02 13:01:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure do_expire_wait [2023-12-02 13:01:27,825 INFO L138 BoogieDeclarations]: Found implementation of procedure do_expire_wait [2023-12-02 13:01:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 13:01:27,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 13:01:27,826 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2023-12-02 13:01:27,826 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2023-12-02 13:01:27,826 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2023-12-02 13:01:27,826 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2023-12-02 13:01:27,826 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2023-12-02 13:01:27,826 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2023-12-02 13:01:27,826 INFO L130 BoogieDeclarations]: Found specification of procedure current_kernel_time [2023-12-02 13:01:27,827 INFO L138 BoogieDeclarations]: Found implementation of procedure current_kernel_time [2023-12-02 13:01:27,827 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_indirect [2023-12-02 13:01:27,827 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_indirect [2023-12-02 13:01:27,827 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2023-12-02 13:01:27,827 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2023-12-02 13:01:27,827 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_clear_managed [2023-12-02 13:01:27,827 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_clear_managed [2023-12-02 13:01:27,828 INFO L130 BoogieDeclarations]: Found specification of procedure from_kgid_munged [2023-12-02 13:01:27,828 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kgid_munged [2023-12-02 13:01:27,828 INFO L130 BoogieDeclarations]: Found specification of procedure follow_down_one [2023-12-02 13:01:27,828 INFO L138 BoogieDeclarations]: Found implementation of procedure follow_down_one [2023-12-02 13:01:27,828 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_show_options [2023-12-02 13:01:27,828 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_show_options [2023-12-02 13:01:27,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_48 [2023-12-02 13:01:27,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_48 [2023-12-02 13:01:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_57 [2023-12-02 13:01:27,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_57 [2023-12-02 13:01:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure __autofs4_add_expiring [2023-12-02 13:01:27,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __autofs4_add_expiring [2023-12-02 13:01:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 13:01:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 13:01:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_wait [2023-12-02 13:01:27,829 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_wait [2023-12-02 13:01:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl [2023-12-02 13:01:27,830 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl [2023-12-02 13:01:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 13:01:27,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 13:01:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2023-12-02 13:01:27,830 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2023-12-02 13:01:27,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 13:01:27,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 13:01:27,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:01:27,831 INFO L130 BoogieDeclarations]: Found specification of procedure d_count [2023-12-02 13:01:27,831 INFO L138 BoogieDeclarations]: Found implementation of procedure d_count [2023-12-02 13:01:27,831 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-12-02 13:01:27,831 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-12-02 13:01:27,831 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2023-12-02 13:01:27,831 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2023-12-02 13:01:27,832 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 13:01:27,832 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 13:01:27,832 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 13:01:27,832 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 13:01:27,832 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2023-12-02 13:01:27,832 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2023-12-02 13:01:27,832 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_oz_mode [2023-12-02 13:01:27,833 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_oz_mode [2023-12-02 13:01:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_do_expire_multi [2023-12-02 13:01:27,833 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_do_expire_multi [2023-12-02 13:01:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2023-12-02 13:01:27,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2023-12-02 13:01:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure __task_pid_nr_ns [2023-12-02 13:01:27,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __task_pid_nr_ns [2023-12-02 13:01:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 13:01:27,834 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 13:01:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_54 [2023-12-02 13:01:27,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_54 [2023-12-02 13:01:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_sbi [2023-12-02 13:01:27,834 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_sbi [2023-12-02 13:01:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 13:01:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-12-02 13:01:27,834 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-12-02 13:01:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_siglock_of_sighand_struct [2023-12-02 13:01:27,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_siglock_of_sighand_struct [2023-12-02 13:01:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_new_ino [2023-12-02 13:01:27,835 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_new_ino [2023-12-02 13:01:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure simple_empty [2023-12-02 13:01:27,835 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_empty [2023-12-02 13:01:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 13:01:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 13:01:27,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 13:01:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_can_expire [2023-12-02 13:01:27,836 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_can_expire [2023-12-02 13:01:27,836 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_ino [2023-12-02 13:01:27,836 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_ino [2023-12-02 13:01:27,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 13:01:27,836 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2023-12-02 13:01:27,836 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2023-12-02 13:01:27,836 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_open [2023-12-02 13:01:27,836 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_open [2023-12-02 13:01:27,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 13:01:27,837 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 13:01:27,837 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_rmdir [2023-12-02 13:01:27,837 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_rmdir [2023-12-02 13:01:27,837 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount [2023-12-02 13:01:27,837 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount [2023-12-02 13:01:27,837 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl_exit [2023-12-02 13:01:27,837 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl_exit [2023-12-02 13:01:27,837 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2023-12-02 13:01:27,837 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2023-12-02 13:01:27,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-12-02 13:01:27,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-12-02 13:01:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_open [2023-12-02 13:01:27,838 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_open [2023-12-02 13:01:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-12-02 13:01:27,838 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-12-02 13:01:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure clear_nlink [2023-12-02 13:01:27,838 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_nlink [2023-12-02 13:01:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_trigger [2023-12-02 13:01:27,839 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_trigger [2023-12-02 13:01:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 13:01:27,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 13:01:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:01:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2023-12-02 13:01:27,839 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2023-12-02 13:01:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-12-02 13:01:27,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-12-02 13:01:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-12-02 13:01:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-12-02 13:01:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2023-12-02 13:01:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2023-12-02 13:01:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-12-02 13:01:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-12-02 13:01:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2023-12-02 13:01:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2023-12-02 13:01:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2023-12-02 13:01:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:01:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 13:01:27,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 13:01:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:01:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 13:01:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure simple_positive [2023-12-02 13:01:27,841 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_positive [2023-12-02 13:01:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-12-02 13:01:27,841 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-12-02 13:01:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure path_get [2023-12-02 13:01:27,842 INFO L138 BoogieDeclarations]: Found implementation of procedure path_get [2023-12-02 13:01:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure dget_dlock [2023-12-02 13:01:27,842 INFO L138 BoogieDeclarations]: Found implementation of procedure dget_dlock [2023-12-02 13:01:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure d_lookup [2023-12-02 13:01:27,842 INFO L138 BoogieDeclarations]: Found implementation of procedure d_lookup [2023-12-02 13:01:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-12-02 13:01:27,842 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-12-02 13:01:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-12-02 13:01:27,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-12-02 13:01:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2023-12-02 13:01:27,843 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2023-12-02 13:01:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-12-02 13:01:27,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-12-02 13:01:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2023-12-02 13:01:27,843 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2023-12-02 13:01:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_mount [2023-12-02 13:01:27,843 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_mount [2023-12-02 13:01:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_indirect [2023-12-02 13:01:27,844 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_indirect [2023-12-02 13:01:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:01:27,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:01:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_wait [2023-12-02 13:01:27,844 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_wait [2023-12-02 13:01:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 13:01:27,844 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 13:01:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl [2023-12-02 13:01:27,844 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl [2023-12-02 13:01:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-12-02 13:01:27,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2023-12-02 13:01:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2023-12-02 13:01:27,845 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2023-12-02 13:01:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2023-12-02 13:01:27,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2023-12-02 13:01:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 13:01:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 13:01:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait_release [2023-12-02 13:01:27,845 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait_release [2023-12-02 13:01:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 13:01:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 13:01:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl_unlocked [2023-12-02 13:01:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl_unlocked [2023-12-02 13:01:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 13:01:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 13:01:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2023-12-02 13:01:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2023-12-02 13:01:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-12-02 13:01:27,847 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-12-02 13:01:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2023-12-02 13:01:27,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2023-12-02 13:01:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_compat_ioctl [2023-12-02 13:01:27,847 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_compat_ioctl [2023-12-02 13:01:27,847 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqretry [2023-12-02 13:01:27,847 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqretry [2023-12-02 13:01:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2023-12-02 13:01:27,848 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2023-12-02 13:01:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-12-02 13:01:27,848 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-12-02 13:01:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_readdir [2023-12-02 13:01:27,848 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_readdir [2023-12-02 13:01:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2023-12-02 13:01:27,848 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2023-12-02 13:01:27,849 INFO L130 BoogieDeclarations]: Found specification of procedure seq_printf [2023-12-02 13:01:27,849 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_printf [2023-12-02 13:01:27,849 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 13:01:27,849 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 13:01:27,849 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount_tree [2023-12-02 13:01:27,849 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount_tree [2023-12-02 13:01:27,849 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-12-02 13:01:27,849 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-12-02 13:01:27,850 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2023-12-02 13:01:27,850 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2023-12-02 13:01:27,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 13:01:27,850 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 13:01:27,850 INFO L130 BoogieDeclarations]: Found specification of procedure get_task_pid [2023-12-02 13:01:27,850 INFO L138 BoogieDeclarations]: Found implementation of procedure get_task_pid [2023-12-02 13:01:27,850 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2023-12-02 13:01:27,850 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2023-12-02 13:01:27,851 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_busy [2023-12-02 13:01:27,851 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_busy [2023-12-02 13:01:27,851 INFO L130 BoogieDeclarations]: Found specification of procedure d_unhashed [2023-12-02 13:01:27,851 INFO L138 BoogieDeclarations]: Found implementation of procedure d_unhashed [2023-12-02 13:01:27,851 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-12-02 13:01:27,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-12-02 13:01:27,851 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_kill_sb [2023-12-02 13:01:27,851 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_kill_sb [2023-12-02 13:01:27,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:01:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 13:01:27,852 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 13:01:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2023-12-02 13:01:27,852 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2023-12-02 13:01:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2023-12-02 13:01:27,852 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2023-12-02 13:01:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_set_managed [2023-12-02 13:01:27,852 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_set_managed [2023-12-02 13:01:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:01:27,852 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2023-12-02 13:01:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2023-12-02 13:01:27,853 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2023-12-02 13:01:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2023-12-02 13:01:27,853 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2023-12-02 13:01:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2023-12-02 13:01:27,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 13:01:27,853 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-12-02 13:01:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-12-02 13:01:27,853 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 13:01:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 13:01:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 13:01:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 13:01:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure find_autofs_mount [2023-12-02 13:01:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure find_autofs_mount [2023-12-02 13:01:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 13:01:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 13:01:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 13:01:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 13:01:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_close [2023-12-02 13:01:27,855 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_close [2023-12-02 13:01:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure ns_of_pid [2023-12-02 13:01:27,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_of_pid [2023-12-02 13:01:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 13:01:27,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 13:01:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_55 [2023-12-02 13:01:27,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_55 [2023-12-02 13:01:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 13:01:27,856 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 13:01:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_clean_ino [2023-12-02 13:01:27,856 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_clean_ino [2023-12-02 13:01:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_49 [2023-12-02 13:01:27,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_49 [2023-12-02 13:01:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2023-12-02 13:01:27,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2023-12-02 13:01:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure kern_path_mountpoint [2023-12-02 13:01:27,856 INFO L138 BoogieDeclarations]: Found implementation of procedure kern_path_mountpoint [2023-12-02 13:01:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_positive_dentry [2023-12-02 13:01:27,857 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_positive_dentry [2023-12-02 13:01:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 13:01:27,857 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 13:01:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure __managed_dentry_set_managed [2023-12-02 13:01:27,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __managed_dentry_set_managed [2023-12-02 13:01:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait [2023-12-02 13:01:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait [2023-12-02 13:01:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_find_wait [2023-12-02 13:01:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_find_wait [2023-12-02 13:01:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2023-12-02 13:01:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2023-12-02 13:01:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2023-12-02 13:01:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2023-12-02 13:01:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:01:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_release [2023-12-02 13:01:27,859 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_release [2023-12-02 13:01:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp_nr [2023-12-02 13:01:27,859 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp_nr [2023-12-02 13:01:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-12-02 13:01:27,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-12-02 13:01:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 13:01:27,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 13:01:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2023-12-02 13:01:27,859 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2023-12-02 13:01:27,859 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_symlink [2023-12-02 13:01:27,860 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_symlink [2023-12-02 13:01:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2023-12-02 13:01:27,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2023-12-02 13:01:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_78 [2023-12-02 13:01:27,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_78 [2023-12-02 13:01:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2023-12-02 13:01:27,860 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2023-12-02 13:01:27,860 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-12-02 13:01:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-12-02 13:01:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure d_mountpoint [2023-12-02 13:01:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure d_mountpoint [2023-12-02 13:01:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2023-12-02 13:01:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2023-12-02 13:01:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure have_submounts [2023-12-02 13:01:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure have_submounts [2023-12-02 13:01:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2023-12-02 13:01:27,862 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2023-12-02 13:01:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-12-02 13:01:27,862 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-12-02 13:01:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-12-02 13:01:27,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-12-02 13:01:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-12-02 13:01:27,862 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-12-02 13:01:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_prepare_pipe [2023-12-02 13:01:27,863 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_prepare_pipe [2023-12-02 13:01:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 13:01:27,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 13:01:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_del_active [2023-12-02 13:01:27,863 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_del_active [2023-12-02 13:01:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 13:01:27,863 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 13:01:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 13:01:27,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-12-02 13:01:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2023-12-02 13:01:27,864 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2023-12-02 13:01:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:01:27,864 INFO L130 BoogieDeclarations]: Found specification of procedure d_add [2023-12-02 13:01:27,864 INFO L138 BoogieDeclarations]: Found implementation of procedure d_add [2023-12-02 13:01:27,865 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_catatonic_mode [2023-12-02 13:01:27,865 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_catatonic_mode [2023-12-02 13:01:27,865 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2023-12-02 13:01:27,865 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2023-12-02 13:01:27,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 13:01:27,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 13:01:27,865 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-12-02 13:01:27,865 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2023-12-02 13:01:27,866 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2023-12-02 13:01:28,951 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:01:28,957 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:01:29,168 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 13:01:30,403 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 13:01:37,993 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-12-02 13:01:38,238 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:01:40,031 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:01:40,032 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-02 13:01:40,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:01:40 BoogieIcfgContainer [2023-12-02 13:01:40,034 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:01:40,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:01:40,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:01:40,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:01:40,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:01:22" (1/3) ... [2023-12-02 13:01:40,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff721f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:01:40, skipping insertion in model container [2023-12-02 13:01:40,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:26" (2/3) ... [2023-12-02 13:01:40,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff721f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:01:40, skipping insertion in model container [2023-12-02 13:01:40,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:01:40" (3/3) ... [2023-12-02 13:01:40,043 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2023-12-02 13:01:40,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:01:40,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-02 13:01:40,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:01:40,175 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;@53ddfceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:01:40,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-02 13:01:40,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 2742 states, 1605 states have (on average 1.3052959501557633) internal successors, (2095), 1656 states have internal predecessors, (2095), 966 states have call successors, (966), 168 states have call predecessors, (966), 167 states have return successors, (955), 949 states have call predecessors, (955), 955 states have call successors, (955) [2023-12-02 13:01:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2023-12-02 13:01:40,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:40,241 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 13:01:40,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:01:40,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:40,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1924702902, now seen corresponding path program 1 times [2023-12-02 13:01:40,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:40,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404180240] [2023-12-02 13:01:40,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:40,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:41,557 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 13:01:41,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:41,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404180240] [2023-12-02 13:01:41,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404180240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:41,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:41,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:01:41,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005350838] [2023-12-02 13:01:41,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:41,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:01:41,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:41,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:01:41,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:01:41,604 INFO L87 Difference]: Start difference. First operand has 2742 states, 1605 states have (on average 1.3052959501557633) internal successors, (2095), 1656 states have internal predecessors, (2095), 966 states have call successors, (966), 168 states have call predecessors, (966), 167 states have return successors, (955), 949 states have call predecessors, (955), 955 states have call successors, (955) 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 13:01:44,160 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 13:01:46,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:48,746 WARN L539 Checker$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 13:01:50,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:51,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:52,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:52,380 INFO L93 Difference]: Finished difference Result 7940 states and 11957 transitions. [2023-12-02 13:01:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:01:52,382 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 13:01:52,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:52,437 INFO L225 Difference]: With dead ends: 7940 [2023-12-02 13:01:52,437 INFO L226 Difference]: Without dead ends: 5271 [2023-12-02 13:01:52,460 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 13:01:52,463 INFO L413 NwaCegarLoop]: 3603 mSDtfsCounter, 3770 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3770 SdHoareTripleChecker+Valid, 7137 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:52,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3770 Valid, 7137 Invalid, 842 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 828 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2023-12-02 13:01:52,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2023-12-02 13:01:52,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 5265. [2023-12-02 13:01:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 3104 states have (on average 1.2999355670103092) internal successors, (4035), 3199 states have internal predecessors, (4035), 1827 states have call successors, (1827), 331 states have call predecessors, (1827), 330 states have return successors, (1823), 1811 states have call predecessors, (1823), 1823 states have call successors, (1823) [2023-12-02 13:01:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 7685 transitions. [2023-12-02 13:01:52,897 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 7685 transitions. Word has length 465 [2023-12-02 13:01:52,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:52,899 INFO L495 AbstractCegarLoop]: Abstraction has 5265 states and 7685 transitions. [2023-12-02 13:01:52,900 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 13:01:52,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 7685 transitions. [2023-12-02 13:01:52,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-02 13:01:52,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:52,916 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] [2023-12-02 13:01:52,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:01:52,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:01:52,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:52,918 INFO L85 PathProgramCache]: Analyzing trace with hash 810488262, now seen corresponding path program 1 times [2023-12-02 13:01:52,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:52,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026179200] [2023-12-02 13:01:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:52,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:53,445 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 13:01:53,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:53,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026179200] [2023-12-02 13:01:53,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026179200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:53,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:53,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:01:53,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402156422] [2023-12-02 13:01:53,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:53,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:01:53,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:53,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:01:53,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:01:53,451 INFO L87 Difference]: Start difference. First operand 5265 states and 7685 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-12-02 13:01:56,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:58,561 WARN L539 Checker$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 13:02:00,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:03,273 WARN L539 Checker$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 13:02:05,281 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 13:02:05,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:05,713 INFO L93 Difference]: Finished difference Result 12334 states and 17931 transitions. [2023-12-02 13:02:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:02:05,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 481 [2023-12-02 13:02:05,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:05,766 INFO L225 Difference]: With dead ends: 12334 [2023-12-02 13:02:05,766 INFO L226 Difference]: Without dead ends: 7158 [2023-12-02 13:02:05,790 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 13:02:05,792 INFO L413 NwaCegarLoop]: 3571 mSDtfsCounter, 3240 mSDsluCounter, 3523 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 13 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3240 SdHoareTripleChecker+Valid, 7094 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:05,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3240 Valid, 7094 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 865 Invalid, 5 Unknown, 0 Unchecked, 11.8s Time] [2023-12-02 13:02:05,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7158 states. [2023-12-02 13:02:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7158 to 7134. [2023-12-02 13:02:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7134 states, 4191 states have (on average 1.2920544022906228) internal successors, (5415), 4320 states have internal predecessors, (5415), 2458 states have call successors, (2458), 482 states have call predecessors, (2458), 481 states have return successors, (2458), 2435 states have call predecessors, (2458), 2454 states have call successors, (2458) [2023-12-02 13:02:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7134 states to 7134 states and 10331 transitions. [2023-12-02 13:02:06,217 INFO L78 Accepts]: Start accepts. Automaton has 7134 states and 10331 transitions. Word has length 481 [2023-12-02 13:02:06,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:06,219 INFO L495 AbstractCegarLoop]: Abstraction has 7134 states and 10331 transitions. [2023-12-02 13:02:06,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-12-02 13:02:06,219 INFO L276 IsEmpty]: Start isEmpty. Operand 7134 states and 10331 transitions. [2023-12-02 13:02:06,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-02 13:02:06,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:06,233 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] [2023-12-02 13:02:06,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:02:06,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:02:06,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:06,234 INFO L85 PathProgramCache]: Analyzing trace with hash 394591572, now seen corresponding path program 1 times [2023-12-02 13:02:06,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:06,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661154997] [2023-12-02 13:02:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:06,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:06,738 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 13:02:06,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:02:06,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661154997] [2023-12-02 13:02:06,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661154997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:02:06,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:02:06,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:02:06,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121842346] [2023-12-02 13:02:06,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:02:06,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:02:06,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:06,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:02:06,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:02:06,742 INFO L87 Difference]: Start difference. First operand 7134 states and 10331 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-12-02 13:02:09,666 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 13:02:11,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:13,235 WARN L539 Checker$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 13:02:15,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:17,581 WARN L539 Checker$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 13:02:18,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:18,018 INFO L93 Difference]: Finished difference Result 18330 states and 26471 transitions. [2023-12-02 13:02:18,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:02:18,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 480 [2023-12-02 13:02:18,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:18,103 INFO L225 Difference]: With dead ends: 18330 [2023-12-02 13:02:18,103 INFO L226 Difference]: Without dead ends: 11285 [2023-12-02 13:02:18,141 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 13:02:18,142 INFO L413 NwaCegarLoop]: 3623 mSDtfsCounter, 3465 mSDsluCounter, 3553 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 7176 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:18,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 7176 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 826 Invalid, 4 Unknown, 0 Unchecked, 10.9s Time] [2023-12-02 13:02:18,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11285 states. [2023-12-02 13:02:18,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11285 to 11257. [2023-12-02 13:02:18,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11257 states, 6616 states have (on average 1.2908101571946795) internal successors, (8540), 6811 states have internal predecessors, (8540), 3841 states have call successors, (3841), 797 states have call predecessors, (3841), 796 states have return successors, (3845), 3806 states have call predecessors, (3845), 3837 states have call successors, (3845) [2023-12-02 13:02:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11257 states to 11257 states and 16226 transitions. [2023-12-02 13:02:18,949 INFO L78 Accepts]: Start accepts. Automaton has 11257 states and 16226 transitions. Word has length 480 [2023-12-02 13:02:18,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:18,951 INFO L495 AbstractCegarLoop]: Abstraction has 11257 states and 16226 transitions. [2023-12-02 13:02:18,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-12-02 13:02:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 11257 states and 16226 transitions. [2023-12-02 13:02:18,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-12-02 13:02:18,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:18,964 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] [2023-12-02 13:02:18,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 13:02:18,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:02:18,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:18,965 INFO L85 PathProgramCache]: Analyzing trace with hash 590844867, now seen corresponding path program 1 times [2023-12-02 13:02:18,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:18,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410081360] [2023-12-02 13:02:18,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:18,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:19,587 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 13:02:19,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:02:19,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410081360] [2023-12-02 13:02:19,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410081360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:02:19,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:02:19,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:02:19,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404535763] [2023-12-02 13:02:19,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:02:19,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:02:19,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:19,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:02:19,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:02:19,590 INFO L87 Difference]: Start difference. First operand 11257 states and 16226 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-12-02 13:02:22,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:25,311 WARN L539 Checker$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 13:02:27,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:29,407 WARN L539 Checker$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 13:02:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:30,066 INFO L93 Difference]: Finished difference Result 31151 states and 44875 transitions. [2023-12-02 13:02:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:02:30,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 480 [2023-12-02 13:02:30,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:30,153 INFO L225 Difference]: With dead ends: 31151 [2023-12-02 13:02:30,153 INFO L226 Difference]: Without dead ends: 19983 [2023-12-02 13:02:30,187 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 13:02:30,188 INFO L413 NwaCegarLoop]: 3570 mSDtfsCounter, 3670 mSDsluCounter, 3522 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3670 SdHoareTripleChecker+Valid, 7092 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:30,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3670 Valid, 7092 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 862 Invalid, 4 Unknown, 0 Unchecked, 10.0s Time] [2023-12-02 13:02:30,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19983 states. [2023-12-02 13:02:31,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19983 to 19959. [2023-12-02 13:02:31,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19959 states, 11767 states have (on average 1.290218407410555) internal successors, (15182), 12123 states have internal predecessors, (15182), 6747 states have call successors, (6747), 1442 states have call predecessors, (6747), 1441 states have return successors, (6775), 6680 states have call predecessors, (6775), 6743 states have call successors, (6775) [2023-12-02 13:02:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19959 states to 19959 states and 28704 transitions. [2023-12-02 13:02:31,229 INFO L78 Accepts]: Start accepts. Automaton has 19959 states and 28704 transitions. Word has length 480 [2023-12-02 13:02:31,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:31,230 INFO L495 AbstractCegarLoop]: Abstraction has 19959 states and 28704 transitions. [2023-12-02 13:02:31,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2023-12-02 13:02:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 19959 states and 28704 transitions. [2023-12-02 13:02:31,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-02 13:02:31,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:31,242 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] [2023-12-02 13:02:31,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 13:02:31,242 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:02:31,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1803016005, now seen corresponding path program 1 times [2023-12-02 13:02:31,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:31,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893291015] [2023-12-02 13:02:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:31,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7660 trivial. 0 not checked. [2023-12-02 13:02:31,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:02:31,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893291015] [2023-12-02 13:02:31,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893291015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:02:31,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:02:31,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:02:31,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541317877] [2023-12-02 13:02:31,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:02:31,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:02:31,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:31,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:02:31,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:02:31,662 INFO L87 Difference]: Start difference. First operand 19959 states and 28704 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-12-02 13:02:34,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:36,839 WARN L539 Checker$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 13:02:38,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:41,451 WARN L539 Checker$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 13:02:43,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:45,529 WARN L539 Checker$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 13:02:46,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:46,291 INFO L93 Difference]: Finished difference Result 55092 states and 79130 transitions. [2023-12-02 13:02:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:02:46,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 484 [2023-12-02 13:02:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:46,423 INFO L225 Difference]: With dead ends: 55092 [2023-12-02 13:02:46,423 INFO L226 Difference]: Without dead ends: 35222 [2023-12-02 13:02:46,478 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 13:02:46,479 INFO L413 NwaCegarLoop]: 3604 mSDtfsCounter, 3505 mSDsluCounter, 3546 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3505 SdHoareTripleChecker+Valid, 7150 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:46,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3505 Valid, 7150 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 838 Invalid, 6 Unknown, 0 Unchecked, 13.6s Time] [2023-12-02 13:02:46,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35222 states. [2023-12-02 13:02:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35222 to 35182. [2023-12-02 13:02:47,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35182 states, 20762 states have (on average 1.2894711492149118) internal successors, (26772), 21375 states have internal predecessors, (26772), 11819 states have call successors, (11819), 2598 states have call predecessors, (11819), 2597 states have return successors, (11879), 11672 states have call predecessors, (11879), 11815 states have call successors, (11879) [2023-12-02 13:02:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35182 states to 35182 states and 50470 transitions. [2023-12-02 13:02:48,204 INFO L78 Accepts]: Start accepts. Automaton has 35182 states and 50470 transitions. Word has length 484 [2023-12-02 13:02:48,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:48,205 INFO L495 AbstractCegarLoop]: Abstraction has 35182 states and 50470 transitions. [2023-12-02 13:02:48,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2023-12-02 13:02:48,206 INFO L276 IsEmpty]: Start isEmpty. Operand 35182 states and 50470 transitions. [2023-12-02 13:02:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-02 13:02:48,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:48,212 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 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] [2023-12-02 13:02:48,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 13:02:48,213 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:02:48,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:48,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1966617032, now seen corresponding path program 1 times [2023-12-02 13:02:48,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:48,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663626872] [2023-12-02 13:02:48,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:48,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 7658 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7658 trivial. 0 not checked. [2023-12-02 13:02:48,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:02:48,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663626872] [2023-12-02 13:02:48,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663626872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:02:48,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:02:48,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:02:48,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239266236] [2023-12-02 13:02:48,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:02:48,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:02:48,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:48,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:02:48,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:02:48,866 INFO L87 Difference]: Start difference. First operand 35182 states and 50470 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2023-12-02 13:02:51,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:54,420 WARN L539 Checker$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 13:02:56,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:59,605 WARN L539 Checker$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 13:03:00,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:03:00,910 INFO L93 Difference]: Finished difference Result 97756 states and 140163 transitions. [2023-12-02 13:03:00,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:03:00,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 507 [2023-12-02 13:03:00,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:03:01,180 INFO L225 Difference]: With dead ends: 97756 [2023-12-02 13:03:01,181 INFO L226 Difference]: Without dead ends: 62663 [2023-12-02 13:03:01,270 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 13:03:01,271 INFO L413 NwaCegarLoop]: 4413 mSDtfsCounter, 3689 mSDsluCounter, 3526 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3689 SdHoareTripleChecker+Valid, 7939 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:03:01,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3689 Valid, 7939 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 927 Invalid, 4 Unknown, 0 Unchecked, 10.1s Time] [2023-12-02 13:03:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62663 states. [2023-12-02 13:03:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62663 to 62591. [2023-12-02 13:03:03,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62591 states, 37070 states have (on average 1.2884812516859994) internal successors, (47764), 38217 states have internal predecessors, (47764), 20822 states have call successors, (20822), 4708 states have call predecessors, (20822), 4695 states have return successors, (20994), 20531 states have call predecessors, (20994), 20818 states have call successors, (20994) [2023-12-02 13:03:04,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62591 states to 62591 states and 89580 transitions. [2023-12-02 13:03:04,221 INFO L78 Accepts]: Start accepts. Automaton has 62591 states and 89580 transitions. Word has length 507 [2023-12-02 13:03:04,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:03:04,222 INFO L495 AbstractCegarLoop]: Abstraction has 62591 states and 89580 transitions. [2023-12-02 13:03:04,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2023-12-02 13:03:04,222 INFO L276 IsEmpty]: Start isEmpty. Operand 62591 states and 89580 transitions. [2023-12-02 13:03:04,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-02 13:03:04,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:03:04,228 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 13:03:04,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 13:03:04,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:03:04,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:03:04,229 INFO L85 PathProgramCache]: Analyzing trace with hash -478742913, now seen corresponding path program 1 times [2023-12-02 13:03:04,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:03:04,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452750985] [2023-12-02 13:03:04,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:04,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:03:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:03:05,395 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 13:03:05,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:03:05,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452750985] [2023-12-02 13:03:05,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452750985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:03:05,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:03:05,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:03:05,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352676755] [2023-12-02 13:03:05,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:03:05,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:03:05,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:03:05,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:03:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:03:05,399 INFO L87 Difference]: Start difference. First operand 62591 states and 89580 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 13:03:07,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:09,951 WARN L539 Checker$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 13:03:11,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:15,672 WARN L539 Checker$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 13:03:17,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:19,690 WARN L539 Checker$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 13:03:21,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:03:21,572 INFO L93 Difference]: Finished difference Result 62597 states and 89585 transitions. [2023-12-02 13:03:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:03:21,573 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 13:03:21,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:03:21,852 INFO L225 Difference]: With dead ends: 62597 [2023-12-02 13:03:21,852 INFO L226 Difference]: Without dead ends: 62595 [2023-12-02 13:03:21,881 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 13:03:21,882 INFO L413 NwaCegarLoop]: 3566 mSDtfsCounter, 3849 mSDsluCounter, 7121 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3857 SdHoareTripleChecker+Valid, 10687 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:03:21,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3857 Valid, 10687 Invalid, 1224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1217 Invalid, 6 Unknown, 0 Unchecked, 13.9s Time] [2023-12-02 13:03:21,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62595 states. [2023-12-02 13:03:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62595 to 62595. [2023-12-02 13:03:24,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62595 states, 37073 states have (on average 1.2884579073719418) internal successors, (47767), 38220 states have internal predecessors, (47767), 20822 states have call successors, (20822), 4709 states have call predecessors, (20822), 4696 states have return successors, (20994), 20531 states have call predecessors, (20994), 20818 states have call successors, (20994) [2023-12-02 13:03:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62595 states to 62595 states and 89583 transitions. [2023-12-02 13:03:25,446 INFO L78 Accepts]: Start accepts. Automaton has 62595 states and 89583 transitions. Word has length 515 [2023-12-02 13:03:25,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:03:25,447 INFO L495 AbstractCegarLoop]: Abstraction has 62595 states and 89583 transitions. [2023-12-02 13:03:25,447 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 13:03:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 62595 states and 89583 transitions. [2023-12-02 13:03:25,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-12-02 13:03:25,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:03:25,455 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 13:03:25,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 13:03:25,455 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:03:25,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:03:25,455 INFO L85 PathProgramCache]: Analyzing trace with hash 339455790, now seen corresponding path program 1 times [2023-12-02 13:03:25,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:03:25,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679116654] [2023-12-02 13:03:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:25,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:03:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:03:26,540 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 13:03:26,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:03:26,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679116654] [2023-12-02 13:03:26,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679116654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:03:26,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:03:26,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:03:26,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298066049] [2023-12-02 13:03:26,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:03:26,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:03:26,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:03:26,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:03:26,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:03:26,545 INFO L87 Difference]: Start difference. First operand 62595 states and 89583 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 13:03:29,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:31,250 WARN L539 Checker$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 13:03:33,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:36,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:38,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:40,446 WARN L539 Checker$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 13:03:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:03:43,143 INFO L93 Difference]: Finished difference Result 65211 states and 91780 transitions. [2023-12-02 13:03:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:03:43,143 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 13:03:43,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:03:43,415 INFO L225 Difference]: With dead ends: 65211 [2023-12-02 13:03:43,416 INFO L226 Difference]: Without dead ends: 65209 [2023-12-02 13:03:43,447 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 13:03:43,448 INFO L413 NwaCegarLoop]: 3567 mSDtfsCounter, 3336 mSDsluCounter, 7639 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3343 SdHoareTripleChecker+Valid, 11206 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:03:43,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3343 Valid, 11206 Invalid, 1302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1295 Invalid, 5 Unknown, 0 Unchecked, 13.4s Time] [2023-12-02 13:03:43,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65209 states. [2023-12-02 13:03:46,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65209 to 65205. [2023-12-02 13:03:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65205 states, 38396 states have (on average 1.2807584123346183) internal successors, (49176), 39543 states have internal predecessors, (49176), 21214 states have call successors, (21214), 5604 states have call predecessors, (21214), 5591 states have return successors, (21386), 20923 states have call predecessors, (21386), 21210 states have call successors, (21386) [2023-12-02 13:03:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65205 states to 65205 states and 91776 transitions. [2023-12-02 13:03:47,241 INFO L78 Accepts]: Start accepts. Automaton has 65205 states and 91776 transitions. Word has length 520 [2023-12-02 13:03:47,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:03:47,241 INFO L495 AbstractCegarLoop]: Abstraction has 65205 states and 91776 transitions. [2023-12-02 13:03:47,242 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 13:03:47,242 INFO L276 IsEmpty]: Start isEmpty. Operand 65205 states and 91776 transitions. [2023-12-02 13:03:47,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-02 13:03:47,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:03:47,250 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 13:03:47,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 13:03:47,250 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:03:47,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:03:47,251 INFO L85 PathProgramCache]: Analyzing trace with hash -463002721, now seen corresponding path program 1 times [2023-12-02 13:03:47,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:03:47,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509903359] [2023-12-02 13:03:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:47,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:03:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:03:48,033 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 13:03:48,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:03:48,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509903359] [2023-12-02 13:03:48,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509903359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:03:48,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:03:48,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:03:48,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587598675] [2023-12-02 13:03:48,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:03:48,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:03:48,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:03:48,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:03:48,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:03:48,037 INFO L87 Difference]: Start difference. First operand 65205 states and 91776 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 13:03:50,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:52,592 WARN L539 Checker$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 13:03:54,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:58,576 WARN L539 Checker$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 13:04:00,581 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 13:04:03,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:03,674 INFO L93 Difference]: Finished difference Result 65211 states and 91781 transitions. [2023-12-02 13:04:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:04:03,674 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 13:04:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:03,905 INFO L225 Difference]: With dead ends: 65211 [2023-12-02 13:04:03,905 INFO L226 Difference]: Without dead ends: 65209 [2023-12-02 13:04:03,927 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 13:04:03,928 INFO L413 NwaCegarLoop]: 3569 mSDtfsCounter, 3844 mSDsluCounter, 7121 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3850 SdHoareTripleChecker+Valid, 10690 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:03,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3850 Valid, 10690 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1218 Invalid, 5 Unknown, 0 Unchecked, 12.7s Time] [2023-12-02 13:04:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65209 states. [2023-12-02 13:04:07,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65209 to 65209. [2023-12-02 13:04:07,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65209 states, 38399 states have (on average 1.2807364775124352) internal successors, (49179), 39546 states have internal predecessors, (49179), 21214 states have call successors, (21214), 5605 states have call predecessors, (21214), 5592 states have return successors, (21386), 20923 states have call predecessors, (21386), 21210 states have call successors, (21386) [2023-12-02 13:04:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65209 states to 65209 states and 91779 transitions. [2023-12-02 13:04:07,638 INFO L78 Accepts]: Start accepts. Automaton has 65209 states and 91779 transitions. Word has length 525 [2023-12-02 13:04:07,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:07,639 INFO L495 AbstractCegarLoop]: Abstraction has 65209 states and 91779 transitions. [2023-12-02 13:04:07,639 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 13:04:07,639 INFO L276 IsEmpty]: Start isEmpty. Operand 65209 states and 91779 transitions. [2023-12-02 13:04:07,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-02 13:04:07,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:07,648 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 4, 3, 3, 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] [2023-12-02 13:04:07,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 13:04:07,648 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:04:07,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:07,649 INFO L85 PathProgramCache]: Analyzing trace with hash 708109710, now seen corresponding path program 1 times [2023-12-02 13:04:07,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:07,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668440007] [2023-12-02 13:04:07,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:07,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7981 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7975 trivial. 0 not checked. [2023-12-02 13:04:08,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:04:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668440007] [2023-12-02 13:04:08,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668440007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:04:08,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:04:08,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:04:08,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006763368] [2023-12-02 13:04:08,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:04:08,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:04:08,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:08,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:04:08,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:04:08,549 INFO L87 Difference]: Start difference. First operand 65209 states and 91779 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, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-02 13:04:11,065 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 13:04:13,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:15,074 WARN L539 Checker$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 13:04:19,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:21,103 WARN L539 Checker$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 13:04:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:24,818 INFO L93 Difference]: Finished difference Result 65215 states and 91784 transitions. [2023-12-02 13:04:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:04:24,818 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, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 530 [2023-12-02 13:04:24,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:25,043 INFO L225 Difference]: With dead ends: 65215 [2023-12-02 13:04:25,043 INFO L226 Difference]: Without dead ends: 65213 [2023-12-02 13:04:25,149 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 13:04:25,149 INFO L413 NwaCegarLoop]: 3569 mSDtfsCounter, 3844 mSDsluCounter, 7121 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3849 SdHoareTripleChecker+Valid, 10690 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:25,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3849 Valid, 10690 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1218 Invalid, 5 Unknown, 0 Unchecked, 12.4s Time] [2023-12-02 13:04:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65213 states. [2023-12-02 13:04:28,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65213 to 65213. [2023-12-02 13:04:28,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65213 states, 38402 states have (on average 1.2807145461173897) internal successors, (49182), 39549 states have internal predecessors, (49182), 21214 states have call successors, (21214), 5606 states have call predecessors, (21214), 5593 states have return successors, (21386), 20923 states have call predecessors, (21386), 21210 states have call successors, (21386) [2023-12-02 13:04:28,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65213 states to 65213 states and 91782 transitions. [2023-12-02 13:04:28,892 INFO L78 Accepts]: Start accepts. Automaton has 65213 states and 91782 transitions. Word has length 530 [2023-12-02 13:04:28,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:28,893 INFO L495 AbstractCegarLoop]: Abstraction has 65213 states and 91782 transitions. [2023-12-02 13:04:28,893 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, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-12-02 13:04:28,893 INFO L276 IsEmpty]: Start isEmpty. Operand 65213 states and 91782 transitions. [2023-12-02 13:04:28,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-12-02 13:04:28,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:28,908 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 13:04:28,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 13:04:28,909 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:04:28,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1808472255, now seen corresponding path program 1 times [2023-12-02 13:04:28,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:28,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236045050] [2023-12-02 13:04:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:29,784 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 13:04:29,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:04:29,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236045050] [2023-12-02 13:04:29,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236045050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:04:29,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:04:29,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:04:29,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690438410] [2023-12-02 13:04:29,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:04:29,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:04:29,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:29,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:04:29,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:04:29,787 INFO L87 Difference]: Start difference. First operand 65213 states and 91782 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 13:04:32,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:34,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:36,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:40,656 WARN L539 Checker$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 13:04:42,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:44,669 WARN L539 Checker$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 13:04:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:48,196 INFO L93 Difference]: Finished difference Result 67370 states and 94172 transitions. [2023-12-02 13:04:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:04:48,197 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 13:04:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:48,460 INFO L225 Difference]: With dead ends: 67370 [2023-12-02 13:04:48,461 INFO L226 Difference]: Without dead ends: 67368 [2023-12-02 13:04:48,488 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 13:04:48,488 INFO L413 NwaCegarLoop]: 3599 mSDtfsCounter, 3725 mSDsluCounter, 7326 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3729 SdHoareTripleChecker+Valid, 10925 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:48,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3729 Valid, 10925 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1294 Invalid, 6 Unknown, 0 Unchecked, 14.1s Time] [2023-12-02 13:04:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67368 states. [2023-12-02 13:04:52,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67368 to 67138. [2023-12-02 13:04:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67138 states, 39468 states have (on average 1.2795935948109862) internal successors, (50503), 40727 states have internal predecessors, (50503), 21634 states have call successors, (21634), 6157 states have call predecessors, (21634), 6032 states have return successors, (21806), 21091 states have call predecessors, (21806), 21630 states have call successors, (21806) [2023-12-02 13:04:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67138 states to 67138 states and 93943 transitions. [2023-12-02 13:04:52,998 INFO L78 Accepts]: Start accepts. Automaton has 67138 states and 93943 transitions. Word has length 535 [2023-12-02 13:04:52,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:52,999 INFO L495 AbstractCegarLoop]: Abstraction has 67138 states and 93943 transitions. [2023-12-02 13:04:52,999 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 13:04:53,000 INFO L276 IsEmpty]: Start isEmpty. Operand 67138 states and 93943 transitions. [2023-12-02 13:04:53,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2023-12-02 13:04:53,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:53,012 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 6, 5, 5, 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, 1, 1] [2023-12-02 13:04:53,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 13:04:53,012 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:04:53,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash 316101614, now seen corresponding path program 1 times [2023-12-02 13:04:53,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:53,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025372873] [2023-12-02 13:04:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:53,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8013 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8003 trivial. 0 not checked. [2023-12-02 13:04:53,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:04:53,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025372873] [2023-12-02 13:04:53,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025372873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:04:53,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:04:53,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:04:53,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601968771] [2023-12-02 13:04:53,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:04:53,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:04:53,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:53,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:04:53,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:04:53,811 INFO L87 Difference]: Start difference. First operand 67138 states and 93943 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, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-02 13:04:56,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:58,345 WARN L539 Checker$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 13:05:00,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:04,658 WARN L539 Checker$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 13:05:06,663 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 13:05:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:10,040 INFO L93 Difference]: Finished difference Result 68743 states and 95359 transitions. [2023-12-02 13:05:10,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:05:10,041 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, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 540 [2023-12-02 13:05:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:10,271 INFO L225 Difference]: With dead ends: 68743 [2023-12-02 13:05:10,271 INFO L226 Difference]: Without dead ends: 68741 [2023-12-02 13:05:10,294 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 13:05:10,294 INFO L413 NwaCegarLoop]: 3595 mSDtfsCounter, 3537 mSDsluCounter, 7494 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3540 SdHoareTripleChecker+Valid, 11089 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:10,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3540 Valid, 11089 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1290 Invalid, 5 Unknown, 0 Unchecked, 12.3s Time] [2023-12-02 13:05:10,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68741 states. [2023-12-02 13:05:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68741 to 68737. [2023-12-02 13:05:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68737 states, 40403 states have (on average 1.2766131227879118) internal successors, (51579), 41662 states have internal predecessors, (51579), 21802 states have call successors, (21802), 6653 states have call predecessors, (21802), 6528 states have return successors, (21974), 21259 states have call predecessors, (21974), 21798 states have call successors, (21974) [2023-12-02 13:05:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68737 states to 68737 states and 95355 transitions. [2023-12-02 13:05:15,273 INFO L78 Accepts]: Start accepts. Automaton has 68737 states and 95355 transitions. Word has length 540 [2023-12-02 13:05:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:15,274 INFO L495 AbstractCegarLoop]: Abstraction has 68737 states and 95355 transitions. [2023-12-02 13:05:15,274 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, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-02 13:05:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 68737 states and 95355 transitions. [2023-12-02 13:05:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-02 13:05:15,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:15,287 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] [2023-12-02 13:05:15,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 13:05:15,288 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:05:15,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:15,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1314829265, now seen corresponding path program 1 times [2023-12-02 13:05:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:15,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630301747] [2023-12-02 13:05:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:15,758 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 13:05:15,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630301747] [2023-12-02 13:05:15,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630301747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:15,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:15,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:05:15,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838028483] [2023-12-02 13:05:15,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:15,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:05:15,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:15,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:05:15,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:05:15,762 INFO L87 Difference]: Start difference. First operand 68737 states and 95355 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-12-02 13:05:20,150 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 13:05:22,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:24,743 WARN L539 Checker$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 13:05:27,773 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 13:05:32,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:32,927 INFO L93 Difference]: Finished difference Result 165431 states and 229350 transitions. [2023-12-02 13:05:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:05:32,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 542 [2023-12-02 13:05:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:33,385 INFO L225 Difference]: With dead ends: 165431 [2023-12-02 13:05:33,385 INFO L226 Difference]: Without dead ends: 96948 [2023-12-02 13:05:33,539 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 13:05:33,540 INFO L413 NwaCegarLoop]: 6457 mSDtfsCounter, 3234 mSDsluCounter, 3516 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3234 SdHoareTripleChecker+Valid, 9973 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:33,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3234 Valid, 9973 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1196 Invalid, 4 Unknown, 0 Unchecked, 10.8s Time] [2023-12-02 13:05:33,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96948 states. [2023-12-02 13:05:40,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96948 to 96900. [2023-12-02 13:05:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96900 states, 56942 states have (on average 1.2746303255944647) internal successors, (72580), 58705 states have internal predecessors, (72580), 30637 states have call successors, (30637), 9502 states have call predecessors, (30637), 9317 states have return successors, (30921), 29848 states have call predecessors, (30921), 30633 states have call successors, (30921) [2023-12-02 13:05:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96900 states to 96900 states and 134138 transitions. [2023-12-02 13:05:40,788 INFO L78 Accepts]: Start accepts. Automaton has 96900 states and 134138 transitions. Word has length 542 [2023-12-02 13:05:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:40,789 INFO L495 AbstractCegarLoop]: Abstraction has 96900 states and 134138 transitions. [2023-12-02 13:05:40,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-12-02 13:05:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 96900 states and 134138 transitions. [2023-12-02 13:05:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-02 13:05:40,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:40,802 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] [2023-12-02 13:05:40,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 13:05:40,803 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:05:40,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:40,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1981877288, now seen corresponding path program 1 times [2023-12-02 13:05:40,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:40,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509760594] [2023-12-02 13:05:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:40,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:41,238 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 13:05:41,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:41,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509760594] [2023-12-02 13:05:41,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509760594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:41,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:41,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:05:41,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341208057] [2023-12-02 13:05:41,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:41,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:05:41,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:41,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:05:41,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:05:41,241 INFO L87 Difference]: Start difference. First operand 96900 states and 134138 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-12-02 13:05:45,573 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 13:05:47,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:50,134 WARN L539 Checker$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 13:05:52,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:54,844 WARN L539 Checker$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 13:05:57,429 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 13:06:05,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:05,250 INFO L93 Difference]: Finished difference Result 236360 states and 327233 transitions. [2023-12-02 13:06:05,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:06:05,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 542 [2023-12-02 13:06:05,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:05,928 INFO L225 Difference]: With dead ends: 236360 [2023-12-02 13:06:05,928 INFO L226 Difference]: Without dead ends: 139714 [2023-12-02 13:06:06,349 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 13:06:06,350 INFO L413 NwaCegarLoop]: 6850 mSDtfsCounter, 3664 mSDsluCounter, 3515 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3664 SdHoareTripleChecker+Valid, 10365 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:06,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3664 Valid, 10365 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1240 Invalid, 6 Unknown, 0 Unchecked, 14.4s Time] [2023-12-02 13:06:06,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139714 states. [2023-12-02 13:06:16,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139714 to 139666. [2023-12-02 13:06:16,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139666 states, 82150 states have (on average 1.2741570298234937) internal successors, (104672), 84721 states have internal predecessors, (104672), 44017 states have call successors, (44017), 13768 states have call predecessors, (44017), 13495 states have return successors, (44477), 42868 states have call predecessors, (44477), 44013 states have call successors, (44477) [2023-12-02 13:06:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139666 states to 139666 states and 193166 transitions. [2023-12-02 13:06:18,036 INFO L78 Accepts]: Start accepts. Automaton has 139666 states and 193166 transitions. Word has length 542 [2023-12-02 13:06:18,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:18,037 INFO L495 AbstractCegarLoop]: Abstraction has 139666 states and 193166 transitions. [2023-12-02 13:06:18,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-12-02 13:06:18,038 INFO L276 IsEmpty]: Start isEmpty. Operand 139666 states and 193166 transitions. [2023-12-02 13:06:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-02 13:06:18,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:18,051 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 7, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:18,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 13:06:18,051 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:06:18,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:18,052 INFO L85 PathProgramCache]: Analyzing trace with hash -309646912, now seen corresponding path program 1 times [2023-12-02 13:06:18,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:06:18,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93644449] [2023-12-02 13:06:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:18,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:06:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 8135 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8123 trivial. 0 not checked. [2023-12-02 13:06:18,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:06:18,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93644449] [2023-12-02 13:06:18,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93644449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:06:18,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:06:18,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:06:18,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717749439] [2023-12-02 13:06:18,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:06:18,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:06:18,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:06:18,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:06:18,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:06:18,798 INFO L87 Difference]: Start difference. First operand 139666 states and 193166 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, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-02 13:06:22,814 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 13:06:24,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:06:26,830 WARN L539 Checker$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 13:06:29,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:06:31,562 WARN L539 Checker$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 13:06:40,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:40,299 INFO L93 Difference]: Finished difference Result 139672 states and 193171 transitions. [2023-12-02 13:06:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:06:40,300 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, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 555 [2023-12-02 13:06:40,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:40,801 INFO L225 Difference]: With dead ends: 139672 [2023-12-02 13:06:40,801 INFO L226 Difference]: Without dead ends: 139670 [2023-12-02 13:06:40,848 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 13:06:40,849 INFO L413 NwaCegarLoop]: 3569 mSDtfsCounter, 3843 mSDsluCounter, 7121 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3845 SdHoareTripleChecker+Valid, 10690 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:40,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3845 Valid, 10690 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1218 Invalid, 5 Unknown, 0 Unchecked, 12.1s Time] [2023-12-02 13:06:40,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139670 states. [2023-12-02 13:06:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139670 to 139670. [2023-12-02 13:06:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139670 states, 82153 states have (on average 1.2741470183681667) internal successors, (104675), 84724 states have internal predecessors, (104675), 44017 states have call successors, (44017), 13769 states have call predecessors, (44017), 13496 states have return successors, (44477), 42868 states have call predecessors, (44477), 44013 states have call successors, (44477) [2023-12-02 13:06:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139670 states to 139670 states and 193169 transitions. [2023-12-02 13:06:52,604 INFO L78 Accepts]: Start accepts. Automaton has 139670 states and 193169 transitions. Word has length 555 [2023-12-02 13:06:52,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:52,605 INFO L495 AbstractCegarLoop]: Abstraction has 139670 states and 193169 transitions. [2023-12-02 13:06:52,605 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, (65), 3 states have call predecessors, (65), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-02 13:06:52,605 INFO L276 IsEmpty]: Start isEmpty. Operand 139670 states and 193169 transitions. [2023-12-02 13:06:52,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-12-02 13:06:52,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:52,620 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:52,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 13:06:52,620 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:06:52,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:52,621 INFO L85 PathProgramCache]: Analyzing trace with hash 232358124, now seen corresponding path program 1 times [2023-12-02 13:06:52,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:06:52,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396030416] [2023-12-02 13:06:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:52,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:06:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8062 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8055 trivial. 0 not checked. [2023-12-02 13:06:52,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:06:52,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396030416] [2023-12-02 13:06:52,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396030416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:06:52,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:06:52,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:06:52,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384612743] [2023-12-02 13:06:52,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:06:52,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:06:52,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:06:52,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:06:52,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:06:52,939 INFO L87 Difference]: Start difference. First operand 139670 states and 193169 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2023-12-02 13:06:57,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:06:59,667 WARN L539 Checker$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 13:07:02,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:07:04,246 WARN L539 Checker$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 13:07:06,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:07:09,320 WARN L539 Checker$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 13:07:22,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:22,752 INFO L93 Difference]: Finished difference Result 342409 states and 473084 transitions. [2023-12-02 13:07:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:07:22,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 547 [2023-12-02 13:07:22,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:23,778 INFO L225 Difference]: With dead ends: 342409 [2023-12-02 13:07:23,778 INFO L226 Difference]: Without dead ends: 202993 [2023-12-02 13:07:24,137 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 13:07:24,138 INFO L413 NwaCegarLoop]: 6659 mSDtfsCounter, 3477 mSDsluCounter, 3551 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3477 SdHoareTripleChecker+Valid, 10210 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:24,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3477 Valid, 10210 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1198 Invalid, 6 Unknown, 0 Unchecked, 14.4s Time] [2023-12-02 13:07:24,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202993 states. [2023-12-02 13:07:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202993 to 202869. [2023-12-02 13:07:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202869 states, 119317 states have (on average 1.2733055641693976) internal successors, (151927), 123014 states have internal predecessors, (151927), 63682 states have call successors, (63682), 20275 states have call predecessors, (63682), 19866 states have return successors, (64374), 61981 states have call predecessors, (64374), 63678 states have call successors, (64374) [2023-12-02 13:07:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202869 states to 202869 states and 279983 transitions. [2023-12-02 13:07:41,646 INFO L78 Accepts]: Start accepts. Automaton has 202869 states and 279983 transitions. Word has length 547 [2023-12-02 13:07:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:41,647 INFO L495 AbstractCegarLoop]: Abstraction has 202869 states and 279983 transitions. [2023-12-02 13:07:41,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2023-12-02 13:07:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 202869 states and 279983 transitions. [2023-12-02 13:07:41,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-12-02 13:07:41,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:41,662 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 8, 7, 7, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 13:07:41,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 13:07:41,662 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:07:41,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1442642510, now seen corresponding path program 1 times [2023-12-02 13:07:41,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:41,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375838728] [2023-12-02 13:07:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:41,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8061 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8047 trivial. 0 not checked. [2023-12-02 13:07:42,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375838728] [2023-12-02 13:07:42,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375838728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:42,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:07:42,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:07:42,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291683948] [2023-12-02 13:07:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:42,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:07:42,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:42,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:07:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:07:42,736 INFO L87 Difference]: Start difference. First operand 202869 states and 279983 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, (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 13:07:47,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:07:49,325 WARN L539 Checker$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 13:07:51,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:07:53,952 WARN L539 Checker$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 13:07:55,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:07:57,806 WARN L539 Checker$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 13:08:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:10,775 INFO L93 Difference]: Finished difference Result 202875 states and 279988 transitions. [2023-12-02 13:08:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:08:10,776 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, (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 550 [2023-12-02 13:08:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:11,546 INFO L225 Difference]: With dead ends: 202875 [2023-12-02 13:08:11,546 INFO L226 Difference]: Without dead ends: 202871 [2023-12-02 13:08:11,770 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 13:08:11,770 INFO L413 NwaCegarLoop]: 3569 mSDtfsCounter, 3844 mSDsluCounter, 7121 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3845 SdHoareTripleChecker+Valid, 10690 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:11,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3845 Valid, 10690 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1218 Invalid, 5 Unknown, 0 Unchecked, 13.8s Time] [2023-12-02 13:08:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202871 states. [2023-12-02 13:08:28,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202871 to 202871. [2023-12-02 13:08:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202871 states, 119319 states have (on average 1.2732926021840612) internal successors, (151928), 123015 states have internal predecessors, (151928), 63682 states have call successors, (63682), 20276 states have call predecessors, (63682), 19866 states have return successors, (64374), 61981 states have call predecessors, (64374), 63678 states have call successors, (64374) [2023-12-02 13:08:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202871 states to 202871 states and 279984 transitions. [2023-12-02 13:08:29,844 INFO L78 Accepts]: Start accepts. Automaton has 202871 states and 279984 transitions. Word has length 550 [2023-12-02 13:08:29,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:29,845 INFO L495 AbstractCegarLoop]: Abstraction has 202871 states and 279984 transitions. [2023-12-02 13:08:29,845 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, (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 13:08:29,845 INFO L276 IsEmpty]: Start isEmpty. Operand 202871 states and 279984 transitions. [2023-12-02 13:08:29,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-12-02 13:08:29,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:29,862 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 4, 4, 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] [2023-12-02 13:08:29,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 13:08:29,862 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:08:29,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:29,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1297501526, now seen corresponding path program 1 times [2023-12-02 13:08:29,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:29,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642127036] [2023-12-02 13:08:29,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:29,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8067 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8060 trivial. 0 not checked. [2023-12-02 13:08:30,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:30,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642127036] [2023-12-02 13:08:30,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642127036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:30,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:30,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:08:30,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787362369] [2023-12-02 13:08:30,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:30,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:08:30,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:30,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:08:30,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:30,707 INFO L87 Difference]: Start difference. First operand 202871 states and 279984 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-12-02 13:08:35,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:37,690 WARN L539 Checker$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 13:08:40,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:42,978 WARN L539 Checker$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 13:08:44,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:55,164 WARN L539 Checker$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 13:09:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:08,582 INFO L93 Difference]: Finished difference Result 497115 states and 685985 transitions. [2023-12-02 13:09:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:09:08,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 552 [2023-12-02 13:09:08,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:10,037 INFO L225 Difference]: With dead ends: 497115 [2023-12-02 13:09:10,037 INFO L226 Difference]: Without dead ends: 294498 [2023-12-02 13:09:10,542 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 13:09:10,543 INFO L413 NwaCegarLoop]: 6707 mSDtfsCounter, 3525 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3525 SdHoareTripleChecker+Valid, 10251 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:10,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3525 Valid, 10251 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1194 Invalid, 6 Unknown, 0 Unchecked, 14.2s Time] [2023-12-02 13:09:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294498 states. [2023-12-02 13:09:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294498 to 294336. [2023-12-02 13:09:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294336 states, 173378 states have (on average 1.2742908558179238) internal successors, (220934), 178696 states have internal predecessors, (220934), 91993 states have call successors, (91993), 29575 states have call predecessors, (91993), 28961 states have return successors, (93033), 89388 states have call predecessors, (93033), 91989 states have call successors, (93033) [2023-12-02 13:09:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294336 states to 294336 states and 405960 transitions. [2023-12-02 13:09:37,639 INFO L78 Accepts]: Start accepts. Automaton has 294336 states and 405960 transitions. Word has length 552 [2023-12-02 13:09:38,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:38,088 INFO L495 AbstractCegarLoop]: Abstraction has 294336 states and 405960 transitions. [2023-12-02 13:09:38,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-12-02 13:09:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 294336 states and 405960 transitions. [2023-12-02 13:09:38,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-12-02 13:09:38,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:38,108 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:38,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 13:09:38,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-02 13:09:38,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash -972662017, now seen corresponding path program 1 times [2023-12-02 13:09:38,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:38,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371158131] [2023-12-02 13:09:38,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:38,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 8091 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 8075 trivial. 0 not checked. [2023-12-02 13:09:38,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:38,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371158131] [2023-12-02 13:09:38,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371158131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:38,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:09:38,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:09:38,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899219098] [2023-12-02 13:09:38,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:38,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:09:38,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:38,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:09:38,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:09:38,996 INFO L87 Difference]: Start difference. First operand 294336 states and 405960 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, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2023-12-02 13:09:43,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:45,496 WARN L539 Checker$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 13:09:47,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:50,875 WARN L539 Checker$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 13:09:52,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:54,894 WARN L539 Checker$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 13:10:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:10:15,623 INFO L93 Difference]: Finished difference Result 295028 states and 406375 transitions. [2023-12-02 13:10:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:10:15,624 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, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 555 [2023-12-02 13:10:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:10:16,761 INFO L225 Difference]: With dead ends: 295028 [2023-12-02 13:10:16,761 INFO L226 Difference]: Without dead ends: 292127 [2023-12-02 13:10:16,868 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 13:10:16,869 INFO L413 NwaCegarLoop]: 3565 mSDtfsCounter, 3787 mSDsluCounter, 7165 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3787 SdHoareTripleChecker+Valid, 10730 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:10:16,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3787 Valid, 10730 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1230 Invalid, 6 Unknown, 0 Unchecked, 14.0s Time] [2023-12-02 13:10:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292127 states.