./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-nfs-nfs_layout_nfsv41_files.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/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_8dbf65df-6657-4381-bbe0-19084297dc0c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/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-nfs-nfs_layout_nfsv41_files.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/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_8dbf65df-6657-4381-bbe0-19084297dc0c/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 d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:44:23,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:44:23,438 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 19:44:23,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:44:23,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:44:23,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:44:23,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:44:23,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:44:23,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:44:23,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:44:23,473 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:44:23,473 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:44:23,474 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:44:23,474 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:44:23,475 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:44:23,475 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:44:23,476 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:44:23,476 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:44:23,477 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:44:23,477 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:44:23,478 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:44:23,478 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:44:23,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:44:23,479 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:44:23,480 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:44:23,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:44:23,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:44:23,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:44:23,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:44:23,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:44:23,482 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:44:23,482 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:44:23,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:44:23,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:44:23,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:44:23,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:44:23,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:44:23,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:44:23,484 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:44:23,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:44:23,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:44:23,485 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:44:23,485 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:44:23,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:44:23,485 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_8dbf65df-6657-4381-bbe0-19084297dc0c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 [2023-12-02 19:44:23,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:44:23,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:44:23,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:44:23,765 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:44:23,766 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:44:23,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2023-12-02 19:44:26,505 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:44:27,001 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:44:27,001 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2023-12-02 19:44:27,048 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/bin/utaipan-verify-nQ1chXbOIh/data/fbf5362f2/a1806fd9a455406bb349a3543655eecc/FLAG227c92dd6 [2023-12-02 19:44:27,061 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/bin/utaipan-verify-nQ1chXbOIh/data/fbf5362f2/a1806fd9a455406bb349a3543655eecc [2023-12-02 19:44:27,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:44:27,065 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:44:27,067 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:44:27,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:44:27,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:44:27,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:44:27" (1/1) ... [2023-12-02 19:44:27,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b14efd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:27, skipping insertion in model container [2023-12-02 19:44:27,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:44:27" (1/1) ... [2023-12-02 19:44:27,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:44:30,498 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_8dbf65df-6657-4381-bbe0-19084297dc0c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2023-12-02 19:44:30,502 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_8dbf65df-6657-4381-bbe0-19084297dc0c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2023-12-02 19:44:30,503 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_8dbf65df-6657-4381-bbe0-19084297dc0c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2023-12-02 19:44:30,503 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_8dbf65df-6657-4381-bbe0-19084297dc0c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2023-12-02 19:44:30,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:44:30,542 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:44:30,636 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; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [7210] [2023-12-02 19:44:30,637 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; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [7217] [2023-12-02 19:44:30,638 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [7224] [2023-12-02 19:44:30,639 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)); [7321-7322] [2023-12-02 19:44:30,640 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"); [7327-7329] [2023-12-02 19:44:30,642 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; addl %1,%0": "+m" (v->counter): "ir" (i)); [7369] [2023-12-02 19:44:30,642 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)); [7376] [2023-12-02 19:44:30,643 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; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [7404-7405] [2023-12-02 19:44:30,643 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; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [7408-7409] [2023-12-02 19:44:30,643 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; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [7412-7413] [2023-12-02 19:44:30,643 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; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [7416-7417] [2023-12-02 19:44:30,644 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "m" (__preempt_count)); [7466] [2023-12-02 19:44:30,644 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [7469] [2023-12-02 19:44:30,644 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [7472] [2023-12-02 19:44:30,644 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "m" (__preempt_count)); [7475] [2023-12-02 19:44:30,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (__preempt_count)); [7512] [2023-12-02 19:44:30,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (__preempt_count)); [7515] [2023-12-02 19:44:30,646 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%P0": "+m" (__preempt_count): "qi" (val)); [7517] [2023-12-02 19:44:30,646 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (__preempt_count)); [7522] [2023-12-02 19:44:30,646 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (__preempt_count)); [7525] [2023-12-02 19:44:30,647 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%P0": "+m" (__preempt_count): "ri" (val)); [7527] [2023-12-02 19:44:30,647 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (__preempt_count)); [7532] [2023-12-02 19:44:30,647 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (__preempt_count)); [7535] [2023-12-02 19:44:30,647 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%P0": "+m" (__preempt_count): "ri" (val)); [7537] [2023-12-02 19:44:30,647 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (__preempt_count)); [7542] [2023-12-02 19:44:30,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (__preempt_count)); [7545] [2023-12-02 19:44:30,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%P0": "+m" (__preempt_count): "re" (val)); [7547] [2023-12-02 19:44:30,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (__preempt_count)); [7585] [2023-12-02 19:44:30,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (__preempt_count)); [7588] [2023-12-02 19:44:30,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%P0": "+m" (__preempt_count): "qi" (- val)); [7590] [2023-12-02 19:44:30,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (__preempt_count)); [7595] [2023-12-02 19:44:30,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (__preempt_count)); [7598] [2023-12-02 19:44:30,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%P0": "+m" (__preempt_count): "ri" (- val)); [7600] [2023-12-02 19:44:30,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (__preempt_count)); [7605] [2023-12-02 19:44:30,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (__preempt_count)); [7608] [2023-12-02 19:44:30,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%P0": "+m" (__preempt_count): "ri" (- val)); [7610] [2023-12-02 19:44:30,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (__preempt_count)); [7615] [2023-12-02 19:44:30,651 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (__preempt_count)); [7618] [2023-12-02 19:44:30,651 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%P0": "+m" (__preempt_count): "re" (- val)); [7620] [2023-12-02 19:44:30,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [7636] [2023-12-02 19:44:30,654 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7762] [2023-12-02 19:44:30,655 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7771] [2023-12-02 19:44:30,663 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [8045] [2023-12-02 19:44:30,669 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/nfs/nfs4filelayout.c"), "i" (84), "i" (12UL)); [8355-8356] [2023-12-02 19:44:30,934 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [12441-12442] [2023-12-02 19:44:30,945 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [12800] [2023-12-02 19:44:31,019 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [13954] [2023-12-02 19:44:31,020 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [13956] [2023-12-02 19:44:31,021 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [13993] [2023-12-02 19:44:31,058 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_8dbf65df-6657-4381-bbe0-19084297dc0c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2023-12-02 19:44:31,058 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_8dbf65df-6657-4381-bbe0-19084297dc0c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2023-12-02 19:44:31,059 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_8dbf65df-6657-4381-bbe0-19084297dc0c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2023-12-02 19:44:31,059 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_8dbf65df-6657-4381-bbe0-19084297dc0c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2023-12-02 19:44:31,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:44:31,211 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:44:31,212 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:44:31,212 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:44:31,212 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:44:31,219 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:44:31,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31 WrapperNode [2023-12-02 19:44:31,220 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:44:31,221 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:44:31,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:44:31,221 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:44:31,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31" (1/1) ... [2023-12-02 19:44:31,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31" (1/1) ... [2023-12-02 19:44:31,515 INFO L138 Inliner]: procedures = 522, calls = 2082, calls flagged for inlining = 218, calls inlined = 177, statements flattened = 5869 [2023-12-02 19:44:31,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:44:31,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:44:31,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:44:31,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:44:31,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31" (1/1) ... [2023-12-02 19:44:31,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31" (1/1) ... [2023-12-02 19:44:31,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31" (1/1) ... [2023-12-02 19:44:31,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31" (1/1) ... [2023-12-02 19:44:31,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31" (1/1) ... [2023-12-02 19:44:31,672 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31" (1/1) ... [2023-12-02 19:44:31,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31" (1/1) ... [2023-12-02 19:44:31,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31" (1/1) ... [2023-12-02 19:44:31,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:44:31,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:44:31,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:44:31,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:44:31,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31" (1/1) ... [2023-12-02 19:44:31,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:44:31,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:44:31,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:44:31,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dbf65df-6657-4381-bbe0-19084297dc0c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:44:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_ds_info [2023-12-02 19:44:31,829 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_ds_info [2023-12-02 19:44:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-12-02 19:44:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_prepare [2023-12-02 19:44:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_prepare [2023-12-02 19:44:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_prepare_ds [2023-12-02 19:44:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_prepare_ds [2023-12-02 19:44:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_write [2023-12-02 19:44:31,831 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_write [2023-12-02 19:44:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 19:44:31,831 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 19:44:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-12-02 19:44:31,831 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-12-02 19:44:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 19:44:31,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 19:44:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2023-12-02 19:44:31,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2023-12-02 19:44:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 19:44:31,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 19:44:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_init_commit [2023-12-02 19:44:31,832 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_init_commit [2023-12-02 19:44:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_init_decode_pages [2023-12-02 19:44:31,832 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_init_decode_pages [2023-12-02 19:44:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 19:44:31,833 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 19:44:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_lseg [2023-12-02 19:44:31,833 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_lseg [2023-12-02 19:44:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_SERVER [2023-12-02 19:44:31,833 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_SERVER [2023-12-02 19:44:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_select_ds_fh [2023-12-02 19:44:31,833 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_select_ds_fh [2023-12-02 19:44:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2023-12-02 19:44:31,834 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2023-12-02 19:44:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_LSEG [2023-12-02 19:44:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_LSEG [2023-12-02 19:44:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 19:44:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 19:44:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_read [2023-12-02 19:44:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_read [2023-12-02 19:44:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-12-02 19:44:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 19:44:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 19:44:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_j_index [2023-12-02 19:44:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_j_index [2023-12-02 19:44:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:44:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_count_stats [2023-12-02 19:44:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_count_stats [2023-12-02 19:44:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 19:44:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 19:44:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_get_lseg [2023-12-02 19:44:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_get_lseg [2023-12-02 19:44:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 19:44:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 19:44:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 19:44:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_pageio_reset_read_mds [2023-12-02 19:44:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_pageio_reset_read_mds [2023-12-02 19:44:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_recover_commit_reqs [2023-12-02 19:44:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_recover_commit_reqs [2023-12-02 19:44:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 19:44:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 19:44:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 19:44:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_test [2023-12-02 19:44:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_test [2023-12-02 19:44:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_write [2023-12-02 19:44:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_write [2023-12-02 19:44:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_commit_list [2023-12-02 19:44:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_commit_list [2023-12-02 19:44:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:44:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_release [2023-12-02 19:44:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_release [2023-12-02 19:44:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_layout_hdr [2023-12-02 19:44:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_layout_hdr [2023-12-02 19:44:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 19:44:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 19:44:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_find_or_create_ds_client [2023-12-02 19:44:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_find_or_create_ds_client [2023-12-02 19:44:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-12-02 19:44:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-12-02 19:44:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2023-12-02 19:44:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2023-12-02 19:44:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 19:44:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 19:44:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_deveiceid_node [2023-12-02 19:44:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_deveiceid_node [2023-12-02 19:44:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:44:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-12-02 19:44:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-12-02 19:44:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-12-02 19:44:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-12-02 19:44:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_request_remove_commit_list [2023-12-02 19:44:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_request_remove_commit_list [2023-12-02 19:44:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_commit_done [2023-12-02 19:44:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_commit_done [2023-12-02 19:44:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-12-02 19:44:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-12-02 19:44:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:44:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_FROM_HDR [2023-12-02 19:44:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_FROM_HDR [2023-12-02 19:44:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_inline_decode [2023-12-02 19:44:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_inline_decode [2023-12-02 19:44:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 19:44:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 19:44:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:44:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_layout_hdr [2023-12-02 19:44:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_layout_hdr [2023-12-02 19:44:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure req_offset [2023-12-02 19:44:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure req_offset [2023-12-02 19:44:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 19:44:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 19:44:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_mark_request_commit [2023-12-02 19:44:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_mark_request_commit [2023-12-02 19:44:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80___0 [2023-12-02 19:44:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80___0 [2023-12-02 19:44:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-12-02 19:44:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-12-02 19:44:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 19:44:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 19:44:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure _filelayout_free_lseg [2023-12-02 19:44:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure _filelayout_free_lseg [2023-12-02 19:44:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_lseg [2023-12-02 19:44:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_lseg [2023-12-02 19:44:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 19:44:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 19:44:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_set_rw_stateid [2023-12-02 19:44:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_set_rw_stateid [2023-12-02 19:44:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:44:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:44:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 19:44:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 19:44:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 19:44:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 19:44:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 19:44:31,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 19:44:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_count_stats [2023-12-02 19:44:31,884 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_count_stats [2023-12-02 19:44:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 19:44:31,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 19:44:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_DEVID_NODE [2023-12-02 19:44:31,884 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_DEVID_NODE [2023-12-02 19:44:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_resend_writes [2023-12-02 19:44:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_resend_writes [2023-12-02 19:44:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2023-12-02 19:44:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2023-12-02 19:44:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_sequence_done [2023-12-02 19:44:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_sequence_done [2023-12-02 19:44:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_free_deviceid [2023-12-02 19:44:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_free_deviceid [2023-12-02 19:44:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_retry_commit [2023-12-02 19:44:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_retry_commit [2023-12-02 19:44:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_scan_commit_lists [2023-12-02 19:44:31,886 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_scan_commit_lists [2023-12-02 19:44:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_fenceme [2023-12-02 19:44:31,886 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_fenceme [2023-12-02 19:44:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_pagelist [2023-12-02 19:44:31,886 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_pagelist [2023-12-02 19:44:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_put_lseg [2023-12-02 19:44:31,886 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_put_lseg [2023-12-02 19:44:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-12-02 19:44:31,886 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-12-02 19:44:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2023-12-02 19:44:31,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2023-12-02 19:44:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_count_stats [2023-12-02 19:44:31,887 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_count_stats [2023-12-02 19:44:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_read [2023-12-02 19:44:31,887 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_read [2023-12-02 19:44:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_exit [2023-12-02 19:44:31,887 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_exit [2023-12-02 19:44:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-12-02 19:44:31,887 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-12-02 19:44:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2023-12-02 19:44:31,888 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2023-12-02 19:44:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_count_iostats [2023-12-02 19:44:31,888 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_count_iostats [2023-12-02 19:44:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_clear_request_commit [2023-12-02 19:44:31,888 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_clear_request_commit [2023-12-02 19:44:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-12-02 19:44:31,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-12-02 19:44:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:44:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 19:44:31,888 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 19:44:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_FILEID [2023-12-02 19:44:31,889 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_FILEID [2023-12-02 19:44:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_ds_index [2023-12-02 19:44:31,889 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_ds_index [2023-12-02 19:44:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_dserver_offset [2023-12-02 19:44:31,889 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_dserver_offset [2023-12-02 19:44:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:44:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_put_deviceid [2023-12-02 19:44:31,890 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_put_deviceid [2023-12-02 19:44:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2023-12-02 19:44:31,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2023-12-02 19:44:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 19:44:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_prepare [2023-12-02 19:44:31,890 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_prepare [2023-12-02 19:44:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 19:44:31,890 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 19:44:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_I [2023-12-02 19:44:31,891 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_I [2023-12-02 19:44:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 19:44:31,891 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 19:44:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-12-02 19:44:31,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-12-02 19:44:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_put_client [2023-12-02 19:44:31,891 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_put_client [2023-12-02 19:44:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 19:44:31,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 19:44:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_call_done [2023-12-02 19:44:31,892 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_call_done [2023-12-02 19:44:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 19:44:31,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 19:44:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_release [2023-12-02 19:44:31,892 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_release [2023-12-02 19:44:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_setup_sequence [2023-12-02 19:44:31,893 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_setup_sequence [2023-12-02 19:44:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 19:44:31,893 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 19:44:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_commitdata_alloc [2023-12-02 19:44:31,893 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_commitdata_alloc [2023-12-02 19:44:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_set_scratch_buffer [2023-12-02 19:44:31,893 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_set_scratch_buffer [2023-12-02 19:44:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_79 [2023-12-02 19:44:31,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_79 [2023-12-02 19:44:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_pagelist [2023-12-02 19:44:31,894 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_pagelist [2023-12-02 19:44:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 19:44:31,894 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 19:44:31,894 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 19:44:31,895 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 19:44:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_call_done [2023-12-02 19:44:31,895 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_call_done [2023-12-02 19:44:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:44:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_fh_array [2023-12-02 19:44:31,895 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_fh_array [2023-12-02 19:44:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_pagelist [2023-12-02 19:44:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_pagelist [2023-12-02 19:44:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 19:44:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 19:44:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80 [2023-12-02 19:44:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80 [2023-12-02 19:44:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_initiate_commit [2023-12-02 19:44:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_initiate_commit [2023-12-02 19:44:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-12-02 19:44:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-12-02 19:44:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-12-02 19:44:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-12-02 19:44:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-12-02 19:44:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_print_deviceid [2023-12-02 19:44:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_print_deviceid [2023-12-02 19:44:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 19:44:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 19:44:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_update_layout [2023-12-02 19:44:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_update_layout [2023-12-02 19:44:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 19:44:31,898 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 19:44:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2023-12-02 19:44:31,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2023-12-02 19:44:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_release [2023-12-02 19:44:31,898 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_release [2023-12-02 19:44:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_mark_deviceid_unavailable [2023-12-02 19:44:31,898 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_mark_deviceid_unavailable [2023-12-02 19:44:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_test_devid_unavailable [2023-12-02 19:44:31,898 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_test_devid_unavailable [2023-12-02 19:44:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:44:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-12-02 19:44:31,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2023-12-02 19:44:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_prepare [2023-12-02 19:44:31,899 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_prepare [2023-12-02 19:44:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 19:44:31,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 19:44:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_to_mds [2023-12-02 19:44:31,899 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_to_mds [2023-12-02 19:44:32,747 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:44:32,752 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:44:33,286 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 19:44:36,212 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-12-02 19:44:36,381 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:44:38,048 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:44:38,048 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 19:44:38,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:44:38 BoogieIcfgContainer [2023-12-02 19:44:38,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:44:38,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:44:38,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:44:38,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:44:38,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:44:27" (1/3) ... [2023-12-02 19:44:38,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795b2b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:44:38, skipping insertion in model container [2023-12-02 19:44:38,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:44:31" (2/3) ... [2023-12-02 19:44:38,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795b2b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:44:38, skipping insertion in model container [2023-12-02 19:44:38,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:44:38" (3/3) ... [2023-12-02 19:44:38,059 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2023-12-02 19:44:38,078 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:44:38,079 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-02 19:44:38,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:44:38,168 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;@18c757c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:44:38,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-02 19:44:38,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 1922 states, 1142 states have (on average 1.3099824868651488) internal successors, (1496), 1190 states have internal predecessors, (1496), 651 states have call successors, (651), 126 states have call predecessors, (651), 125 states have return successors, (645), 622 states have call predecessors, (645), 645 states have call successors, (645) [2023-12-02 19:44:38,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-02 19:44:38,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:44:38,208 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:44:38,209 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 19:44:38,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:44:38,214 INFO L85 PathProgramCache]: Analyzing trace with hash -325212661, now seen corresponding path program 1 times [2023-12-02 19:44:38,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:44:38,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397132856] [2023-12-02 19:44:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:38,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:44:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:44:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2023-12-02 19:44:39,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:44:39,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397132856] [2023-12-02 19:44:39,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397132856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:44:39,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:44:39,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:44:39,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000325455] [2023-12-02 19:44:39,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:44:39,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:44:39,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:44:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:44:39,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:44:39,152 INFO L87 Difference]: Start difference. First operand has 1922 states, 1142 states have (on average 1.3099824868651488) internal successors, (1496), 1190 states have internal predecessors, (1496), 651 states have call successors, (651), 126 states have call predecessors, (651), 125 states have return successors, (645), 622 states have call predecessors, (645), 645 states have call successors, (645) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-02 19:44:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:44:40,825 INFO L93 Difference]: Finished difference Result 5553 states and 8202 transitions. [2023-12-02 19:44:40,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:44:40,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 359 [2023-12-02 19:44:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:44:40,880 INFO L225 Difference]: With dead ends: 5553 [2023-12-02 19:44:40,880 INFO L226 Difference]: Without dead ends: 3690 [2023-12-02 19:44:40,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:44:40,904 INFO L413 NwaCegarLoop]: 2472 mSDtfsCounter, 2589 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2589 SdHoareTripleChecker+Valid, 4908 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:44:40,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2589 Valid, 4908 Invalid, 672 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 19:44:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2023-12-02 19:44:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3684. [2023-12-02 19:44:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 2213 states have (on average 1.307275192046995) internal successors, (2893), 2307 states have internal predecessors, (2893), 1222 states have call successors, (1222), 246 states have call predecessors, (1222), 245 states have return successors, (1218), 1172 states have call predecessors, (1218), 1218 states have call successors, (1218) [2023-12-02 19:44:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 5333 transitions. [2023-12-02 19:44:41,236 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 5333 transitions. Word has length 359 [2023-12-02 19:44:41,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:44:41,286 INFO L495 AbstractCegarLoop]: Abstraction has 3684 states and 5333 transitions. [2023-12-02 19:44:41,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-02 19:44:41,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 5333 transitions. [2023-12-02 19:44:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-02 19:44:41,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:44:41,301 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:44:41,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:44:41,301 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 19:44:41,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:44:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash -980572176, now seen corresponding path program 1 times [2023-12-02 19:44:41,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:44:41,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808845929] [2023-12-02 19:44:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:41,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:44:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:44:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2023-12-02 19:44:41,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:44:41,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808845929] [2023-12-02 19:44:41,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808845929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:44:41,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:44:41,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:44:41,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451001545] [2023-12-02 19:44:41,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:44:41,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:44:41,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:44:41,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:44:41,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:44:41,823 INFO L87 Difference]: Start difference. First operand 3684 states and 5333 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-02 19:44:43,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:44:43,460 INFO L93 Difference]: Finished difference Result 9076 states and 13121 transitions. [2023-12-02 19:44:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:44:43,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 365 [2023-12-02 19:44:43,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:44:43,492 INFO L225 Difference]: With dead ends: 9076 [2023-12-02 19:44:43,492 INFO L226 Difference]: Without dead ends: 5461 [2023-12-02 19:44:43,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:44:43,505 INFO L413 NwaCegarLoop]: 2454 mSDtfsCounter, 2593 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 4876 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:44:43,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2593 Valid, 4876 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 19:44:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5461 states. [2023-12-02 19:44:43,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5461 to 5427. [2023-12-02 19:44:43,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5427 states, 3271 states have (on average 1.3075512075817792) internal successors, (4277), 3414 states have internal predecessors, (4277), 1781 states have call successors, (1781), 372 states have call predecessors, (1781), 371 states have return successors, (1777), 1703 states have call predecessors, (1777), 1777 states have call successors, (1777) [2023-12-02 19:44:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5427 states to 5427 states and 7835 transitions. [2023-12-02 19:44:43,757 INFO L78 Accepts]: Start accepts. Automaton has 5427 states and 7835 transitions. Word has length 365 [2023-12-02 19:44:43,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:44:43,758 INFO L495 AbstractCegarLoop]: Abstraction has 5427 states and 7835 transitions. [2023-12-02 19:44:43,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-02 19:44:43,758 INFO L276 IsEmpty]: Start isEmpty. Operand 5427 states and 7835 transitions. [2023-12-02 19:44:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-02 19:44:43,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:44:43,764 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:44:43,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:44:43,765 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 19:44:43,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:44:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1180263567, now seen corresponding path program 1 times [2023-12-02 19:44:43,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:44:43,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366716432] [2023-12-02 19:44:43,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:43,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:44:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:44:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2023-12-02 19:44:44,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:44:44,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366716432] [2023-12-02 19:44:44,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366716432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:44:44,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:44:44,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:44:44,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717606903] [2023-12-02 19:44:44,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:44:44,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:44:44,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:44:44,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:44:44,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:44:44,071 INFO L87 Difference]: Start difference. First operand 5427 states and 7835 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-02 19:44:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:44:45,607 INFO L93 Difference]: Finished difference Result 14305 states and 20632 transitions. [2023-12-02 19:44:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:44:45,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 369 [2023-12-02 19:44:45,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:44:45,686 INFO L225 Difference]: With dead ends: 14305 [2023-12-02 19:44:45,686 INFO L226 Difference]: Without dead ends: 8947 [2023-12-02 19:44:45,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:44:45,719 INFO L413 NwaCegarLoop]: 2479 mSDtfsCounter, 2594 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2594 SdHoareTripleChecker+Valid, 4901 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:44:45,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2594 Valid, 4901 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 19:44:45,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8947 states. [2023-12-02 19:44:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8947 to 8913. [2023-12-02 19:44:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8913 states, 5387 states have (on average 1.3077779840356414) internal successors, (7045), 5628 states have internal predecessors, (7045), 2899 states have call successors, (2899), 624 states have call predecessors, (2899), 623 states have return successors, (2895), 2765 states have call predecessors, (2895), 2895 states have call successors, (2895) [2023-12-02 19:44:46,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8913 states to 8913 states and 12839 transitions. [2023-12-02 19:44:46,409 INFO L78 Accepts]: Start accepts. Automaton has 8913 states and 12839 transitions. Word has length 369 [2023-12-02 19:44:46,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:44:46,410 INFO L495 AbstractCegarLoop]: Abstraction has 8913 states and 12839 transitions. [2023-12-02 19:44:46,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-02 19:44:46,410 INFO L276 IsEmpty]: Start isEmpty. Operand 8913 states and 12839 transitions. [2023-12-02 19:44:46,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-02 19:44:46,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:44:46,417 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:44:46,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:44:46,417 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 19:44:46,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:44:46,418 INFO L85 PathProgramCache]: Analyzing trace with hash 189517126, now seen corresponding path program 1 times [2023-12-02 19:44:46,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:44:46,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494581455] [2023-12-02 19:44:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:46,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:44:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:44:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2023-12-02 19:44:46,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:44:46,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494581455] [2023-12-02 19:44:46,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494581455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:44:46,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:44:46,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:44:46,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724868657] [2023-12-02 19:44:46,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:44:46,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:44:46,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:44:46,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:44:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:44:46,665 INFO L87 Difference]: Start difference. First operand 8913 states and 12839 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-02 19:44:48,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:44:48,622 INFO L93 Difference]: Finished difference Result 24619 states and 35405 transitions. [2023-12-02 19:44:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:44:48,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 366 [2023-12-02 19:44:48,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:44:48,716 INFO L225 Difference]: With dead ends: 24619 [2023-12-02 19:44:48,717 INFO L226 Difference]: Without dead ends: 15775 [2023-12-02 19:44:48,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:44:48,756 INFO L413 NwaCegarLoop]: 2454 mSDtfsCounter, 2552 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2552 SdHoareTripleChecker+Valid, 4861 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:44:48,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2552 Valid, 4861 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 19:44:48,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15775 states. [2023-12-02 19:44:49,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15775 to 15735. [2023-12-02 19:44:49,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15735 states, 9505 states have (on average 1.304366123093109) internal successors, (12398), 9948 states have internal predecessors, (12398), 5099 states have call successors, (5099), 1128 states have call predecessors, (5099), 1127 states have return successors, (5095), 4847 states have call predecessors, (5095), 5095 states have call successors, (5095) [2023-12-02 19:44:49,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15735 states to 15735 states and 22592 transitions. [2023-12-02 19:44:49,748 INFO L78 Accepts]: Start accepts. Automaton has 15735 states and 22592 transitions. Word has length 366 [2023-12-02 19:44:49,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:44:49,749 INFO L495 AbstractCegarLoop]: Abstraction has 15735 states and 22592 transitions. [2023-12-02 19:44:49,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-02 19:44:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 15735 states and 22592 transitions. [2023-12-02 19:44:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-02 19:44:49,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:44:49,758 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:44:49,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:44:49,759 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 19:44:49,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:44:49,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1154929546, now seen corresponding path program 1 times [2023-12-02 19:44:49,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:44:49,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338569584] [2023-12-02 19:44:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:49,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:44:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:44:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2023-12-02 19:44:50,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:44:50,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338569584] [2023-12-02 19:44:50,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338569584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:44:50,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:44:50,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:44:50,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968971896] [2023-12-02 19:44:50,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:44:50,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:44:50,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:44:50,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:44:50,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:44:50,036 INFO L87 Difference]: Start difference. First operand 15735 states and 22592 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-02 19:44:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:44:52,690 INFO L93 Difference]: Finished difference Result 40317 states and 57558 transitions. [2023-12-02 19:44:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:44:52,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 367 [2023-12-02 19:44:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:44:52,826 INFO L225 Difference]: With dead ends: 40317 [2023-12-02 19:44:52,826 INFO L226 Difference]: Without dead ends: 24651 [2023-12-02 19:44:52,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:44:52,895 INFO L413 NwaCegarLoop]: 3738 mSDtfsCounter, 2551 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2551 SdHoareTripleChecker+Valid, 6145 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:44:52,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2551 Valid, 6145 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 19:44:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24651 states. [2023-12-02 19:44:54,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24651 to 24611. [2023-12-02 19:44:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24611 states, 14768 states have (on average 1.2965872156013) internal successors, (19148), 15530 states have internal predecessors, (19148), 7914 states have call successors, (7914), 1926 states have call predecessors, (7914), 1925 states have return successors, (7910), 7431 states have call predecessors, (7910), 7910 states have call successors, (7910) [2023-12-02 19:44:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24611 states to 24611 states and 34972 transitions. [2023-12-02 19:44:54,534 INFO L78 Accepts]: Start accepts. Automaton has 24611 states and 34972 transitions. Word has length 367 [2023-12-02 19:44:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:44:54,535 INFO L495 AbstractCegarLoop]: Abstraction has 24611 states and 34972 transitions. [2023-12-02 19:44:54,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-02 19:44:54,536 INFO L276 IsEmpty]: Start isEmpty. Operand 24611 states and 34972 transitions. [2023-12-02 19:44:54,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-12-02 19:44:54,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:44:54,544 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:44:54,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:44:54,544 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 19:44:54,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:44:54,545 INFO L85 PathProgramCache]: Analyzing trace with hash 16546101, now seen corresponding path program 1 times [2023-12-02 19:44:54,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:44:54,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719152606] [2023-12-02 19:44:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:54,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:44:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:44:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2023-12-02 19:44:55,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:44:55,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719152606] [2023-12-02 19:44:55,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719152606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:44:55,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:44:55,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:44:55,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486714884] [2023-12-02 19:44:55,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:44:55,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:44:55,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:44:55,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:44:55,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:44:55,036 INFO L87 Difference]: Start difference. First operand 24611 states and 34972 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-02 19:44:57,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:44:57,807 INFO L93 Difference]: Finished difference Result 70637 states and 100471 transitions. [2023-12-02 19:44:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:44:57,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 374 [2023-12-02 19:44:57,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:44:58,008 INFO L225 Difference]: With dead ends: 70637 [2023-12-02 19:44:58,008 INFO L226 Difference]: Without dead ends: 46095 [2023-12-02 19:44:58,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:44:58,073 INFO L413 NwaCegarLoop]: 2989 mSDtfsCounter, 2595 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2595 SdHoareTripleChecker+Valid, 5411 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:44:58,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2595 Valid, 5411 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 19:44:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46095 states. [2023-12-02 19:45:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46095 to 46055. [2023-12-02 19:45:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46055 states, 27768 states have (on average 1.2971405934889082) internal successors, (36019), 29159 states have internal predecessors, (36019), 14725 states have call successors, (14725), 3559 states have call predecessors, (14725), 3558 states have return successors, (14721), 13867 states have call predecessors, (14721), 14721 states have call successors, (14721) [2023-12-02 19:45:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46055 states to 46055 states and 65465 transitions. [2023-12-02 19:45:00,689 INFO L78 Accepts]: Start accepts. Automaton has 46055 states and 65465 transitions. Word has length 374 [2023-12-02 19:45:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:45:00,690 INFO L495 AbstractCegarLoop]: Abstraction has 46055 states and 65465 transitions. [2023-12-02 19:45:00,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-02 19:45:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 46055 states and 65465 transitions. [2023-12-02 19:45:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2023-12-02 19:45:00,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:00,695 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 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] [2023-12-02 19:45:00,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:45:00,695 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 19:45:00,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1855887393, now seen corresponding path program 1 times [2023-12-02 19:45:00,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:00,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204743476] [2023-12-02 19:45:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:00,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:45:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4705 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4705 trivial. 0 not checked. [2023-12-02 19:45:01,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:45:01,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204743476] [2023-12-02 19:45:01,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204743476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:45:01,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:45:01,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:45:01,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744374275] [2023-12-02 19:45:01,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:45:01,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:45:01,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:45:01,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:45:01,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:45:01,443 INFO L87 Difference]: Start difference. First operand 46055 states and 65465 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 19:45:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:45:04,103 INFO L93 Difference]: Finished difference Result 46061 states and 65470 transitions. [2023-12-02 19:45:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:45:04,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 392 [2023-12-02 19:45:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:45:04,292 INFO L225 Difference]: With dead ends: 46061 [2023-12-02 19:45:04,292 INFO L226 Difference]: Without dead ends: 46059 [2023-12-02 19:45:04,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:45:04,316 INFO L413 NwaCegarLoop]: 2442 mSDtfsCounter, 2667 mSDsluCounter, 4865 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 7307 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:45:04,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2683 Valid, 7307 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 19:45:04,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46059 states. [2023-12-02 19:45:06,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46059 to 46059. [2023-12-02 19:45:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46059 states, 27771 states have (on average 1.2971084944726514) internal successors, (36022), 29162 states have internal predecessors, (36022), 14725 states have call successors, (14725), 3560 states have call predecessors, (14725), 3559 states have return successors, (14721), 13867 states have call predecessors, (14721), 14721 states have call successors, (14721) [2023-12-02 19:45:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46059 states to 46059 states and 65468 transitions. [2023-12-02 19:45:07,041 INFO L78 Accepts]: Start accepts. Automaton has 46059 states and 65468 transitions. Word has length 392 [2023-12-02 19:45:07,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:45:07,042 INFO L495 AbstractCegarLoop]: Abstraction has 46059 states and 65468 transitions. [2023-12-02 19:45:07,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 19:45:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 46059 states and 65468 transitions. [2023-12-02 19:45:07,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-02 19:45:07,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:07,047 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 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] [2023-12-02 19:45:07,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 19:45:07,047 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 19:45:07,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:07,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1921688452, now seen corresponding path program 1 times [2023-12-02 19:45:07,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:07,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582320694] [2023-12-02 19:45:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:07,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:45:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4706 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2023-12-02 19:45:07,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:45:07,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582320694] [2023-12-02 19:45:07,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582320694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:45:07,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:45:07,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:45:07,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695629062] [2023-12-02 19:45:07,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:45:07,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:45:07,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:45:07,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:45:07,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:45:07,828 INFO L87 Difference]: Start difference. First operand 46059 states and 65468 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 19:45:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:45:10,854 INFO L93 Difference]: Finished difference Result 46065 states and 65473 transitions. [2023-12-02 19:45:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:45:10,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 396 [2023-12-02 19:45:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:45:10,958 INFO L225 Difference]: With dead ends: 46065 [2023-12-02 19:45:10,958 INFO L226 Difference]: Without dead ends: 46063 [2023-12-02 19:45:10,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:45:10,970 INFO L413 NwaCegarLoop]: 2445 mSDtfsCounter, 2662 mSDsluCounter, 4865 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2677 SdHoareTripleChecker+Valid, 7310 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:45:10,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2677 Valid, 7310 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 19:45:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46063 states. [2023-12-02 19:45:13,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46063 to 46063. [2023-12-02 19:45:13,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46063 states, 27774 states have (on average 1.297076402390725) internal successors, (36025), 29165 states have internal predecessors, (36025), 14725 states have call successors, (14725), 3561 states have call predecessors, (14725), 3560 states have return successors, (14721), 13867 states have call predecessors, (14721), 14721 states have call successors, (14721) [2023-12-02 19:45:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46063 states to 46063 states and 65471 transitions. [2023-12-02 19:45:14,016 INFO L78 Accepts]: Start accepts. Automaton has 46063 states and 65471 transitions. Word has length 396 [2023-12-02 19:45:14,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:45:14,017 INFO L495 AbstractCegarLoop]: Abstraction has 46063 states and 65471 transitions. [2023-12-02 19:45:14,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 19:45:14,017 INFO L276 IsEmpty]: Start isEmpty. Operand 46063 states and 65471 transitions. [2023-12-02 19:45:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-02 19:45:14,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:14,022 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 3, 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] [2023-12-02 19:45:14,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 19:45:14,022 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 19:45:14,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:14,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1339770145, now seen corresponding path program 1 times [2023-12-02 19:45:14,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:14,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303617356] [2023-12-02 19:45:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:14,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:45:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4713 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4709 trivial. 0 not checked. [2023-12-02 19:45:14,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:45:14,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303617356] [2023-12-02 19:45:14,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303617356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:45:14,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:45:14,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:45:14,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298322119] [2023-12-02 19:45:14,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:45:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:45:14,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:45:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:45:14,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:45:14,605 INFO L87 Difference]: Start difference. First operand 46063 states and 65471 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-02 19:45:17,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:45:17,689 INFO L93 Difference]: Finished difference Result 46069 states and 65476 transitions. [2023-12-02 19:45:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:45:17,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 402 [2023-12-02 19:45:17,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:45:17,801 INFO L225 Difference]: With dead ends: 46069 [2023-12-02 19:45:17,802 INFO L226 Difference]: Without dead ends: 46067 [2023-12-02 19:45:17,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:45:17,813 INFO L413 NwaCegarLoop]: 2445 mSDtfsCounter, 2662 mSDsluCounter, 4865 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 7310 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:45:17,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2676 Valid, 7310 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:45:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46067 states. [2023-12-02 19:45:20,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46067 to 46067. [2023-12-02 19:45:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46067 states, 27777 states have (on average 1.2970443172408828) internal successors, (36028), 29168 states have internal predecessors, (36028), 14725 states have call successors, (14725), 3562 states have call predecessors, (14725), 3561 states have return successors, (14721), 13867 states have call predecessors, (14721), 14721 states have call successors, (14721) [2023-12-02 19:45:20,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46067 states to 46067 states and 65474 transitions. [2023-12-02 19:45:20,433 INFO L78 Accepts]: Start accepts. Automaton has 46067 states and 65474 transitions. Word has length 402 [2023-12-02 19:45:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:45:20,434 INFO L495 AbstractCegarLoop]: Abstraction has 46067 states and 65474 transitions. [2023-12-02 19:45:20,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-02 19:45:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand 46067 states and 65474 transitions. [2023-12-02 19:45:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-12-02 19:45:20,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:20,437 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:45:20,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 19:45:20,438 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 19:45:20,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:20,438 INFO L85 PathProgramCache]: Analyzing trace with hash -702576444, now seen corresponding path program 1 times [2023-12-02 19:45:20,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:20,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173227031] [2023-12-02 19:45:20,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:20,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:45:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4722 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4716 trivial. 0 not checked. [2023-12-02 19:45:20,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:45:20,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173227031] [2023-12-02 19:45:20,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173227031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:45:20,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:45:20,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:45:20,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698879360] [2023-12-02 19:45:20,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:45:20,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:45:20,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:45:20,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:45:20,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:45:20,996 INFO L87 Difference]: Start difference. First operand 46067 states and 65474 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-02 19:45:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:45:23,963 INFO L93 Difference]: Finished difference Result 46073 states and 65479 transitions. [2023-12-02 19:45:23,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:45:23,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 406 [2023-12-02 19:45:23,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:45:24,117 INFO L225 Difference]: With dead ends: 46073 [2023-12-02 19:45:24,117 INFO L226 Difference]: Without dead ends: 46071 [2023-12-02 19:45:24,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:45:24,139 INFO L413 NwaCegarLoop]: 2445 mSDtfsCounter, 2662 mSDsluCounter, 4865 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2675 SdHoareTripleChecker+Valid, 7310 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:45:24,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2675 Valid, 7310 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 19:45:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46071 states. [2023-12-02 19:45:26,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46071 to 46071. [2023-12-02 19:45:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46071 states, 27780 states have (on average 1.2970122390208783) internal successors, (36031), 29171 states have internal predecessors, (36031), 14725 states have call successors, (14725), 3563 states have call predecessors, (14725), 3562 states have return successors, (14721), 13867 states have call predecessors, (14721), 14721 states have call successors, (14721) [2023-12-02 19:45:27,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46071 states to 46071 states and 65477 transitions. [2023-12-02 19:45:27,205 INFO L78 Accepts]: Start accepts. Automaton has 46071 states and 65477 transitions. Word has length 406 [2023-12-02 19:45:27,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:45:27,206 INFO L495 AbstractCegarLoop]: Abstraction has 46071 states and 65477 transitions. [2023-12-02 19:45:27,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-02 19:45:27,207 INFO L276 IsEmpty]: Start isEmpty. Operand 46071 states and 65477 transitions. [2023-12-02 19:45:27,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-12-02 19:45:27,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:27,214 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 5, 4, 4, 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] [2023-12-02 19:45:27,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 19:45:27,215 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 19:45:27,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:27,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2058001887, now seen corresponding path program 1 times [2023-12-02 19:45:27,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:27,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536101043] [2023-12-02 19:45:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:27,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:45:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4737 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4729 trivial. 0 not checked. [2023-12-02 19:45:27,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:45:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536101043] [2023-12-02 19:45:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536101043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:45:27,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:45:27,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:45:27,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463290486] [2023-12-02 19:45:27,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:45:27,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:45:27,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:45:27,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:45:27,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:45:27,708 INFO L87 Difference]: Start difference. First operand 46071 states and 65477 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-12-02 19:45:30,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:45:30,966 INFO L93 Difference]: Finished difference Result 46077 states and 65482 transitions. [2023-12-02 19:45:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:45:30,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 412 [2023-12-02 19:45:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:45:31,108 INFO L225 Difference]: With dead ends: 46077 [2023-12-02 19:45:31,109 INFO L226 Difference]: Without dead ends: 46075 [2023-12-02 19:45:31,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:45:31,129 INFO L413 NwaCegarLoop]: 2445 mSDtfsCounter, 2662 mSDsluCounter, 4865 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2674 SdHoareTripleChecker+Valid, 7310 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:45:31,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2674 Valid, 7310 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 19:45:31,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46075 states. [2023-12-02 19:45:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46075 to 46075. [2023-12-02 19:45:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46075 states, 27783 states have (on average 1.2969801677284671) internal successors, (36034), 29174 states have internal predecessors, (36034), 14725 states have call successors, (14725), 3564 states have call predecessors, (14725), 3563 states have return successors, (14721), 13867 states have call predecessors, (14721), 14721 states have call successors, (14721) [2023-12-02 19:45:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46075 states to 46075 states and 65480 transitions. [2023-12-02 19:45:34,595 INFO L78 Accepts]: Start accepts. Automaton has 46075 states and 65480 transitions. Word has length 412 [2023-12-02 19:45:34,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:45:34,595 INFO L495 AbstractCegarLoop]: Abstraction has 46075 states and 65480 transitions. [2023-12-02 19:45:34,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-12-02 19:45:34,596 INFO L276 IsEmpty]: Start isEmpty. Operand 46075 states and 65480 transitions. [2023-12-02 19:45:34,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-02 19:45:34,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:34,601 INFO L195 NwaCegarLoop]: trace histogram [38, 34, 34, 34, 34, 34, 34, 3, 3, 3, 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] [2023-12-02 19:45:34,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 19:45:34,601 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 19:45:34,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:34,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1273213575, now seen corresponding path program 1 times [2023-12-02 19:45:34,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:34,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049618166] [2023-12-02 19:45:34,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:34,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:45:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4790 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4783 trivial. 0 not checked. [2023-12-02 19:45:34,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:45:34,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049618166] [2023-12-02 19:45:34,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049618166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:45:34,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:45:34,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:45:34,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882093118] [2023-12-02 19:45:34,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:45:34,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:45:34,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:45:34,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:45:34,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:45:34,991 INFO L87 Difference]: Start difference. First operand 46075 states and 65480 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 19:45:40,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:45:40,646 INFO L93 Difference]: Finished difference Result 114129 states and 162228 transitions. [2023-12-02 19:45:40,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:45:40,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 413 [2023-12-02 19:45:40,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:45:40,956 INFO L225 Difference]: With dead ends: 114129 [2023-12-02 19:45:40,956 INFO L226 Difference]: Without dead ends: 68170 [2023-12-02 19:45:41,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:45:41,099 INFO L413 NwaCegarLoop]: 4071 mSDtfsCounter, 2592 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2592 SdHoareTripleChecker+Valid, 6491 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:45:41,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2592 Valid, 6491 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 19:45:41,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68170 states. [2023-12-02 19:45:46,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68170 to 68102. [2023-12-02 19:45:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68102 states, 41096 states have (on average 1.2970605411718903) internal successors, (53304), 43141 states have internal predecessors, (53304), 21732 states have call successors, (21732), 5271 states have call predecessors, (21732), 5270 states have return successors, (21728), 20479 states have call predecessors, (21728), 21728 states have call successors, (21728) [2023-12-02 19:45:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68102 states to 68102 states and 96764 transitions. [2023-12-02 19:45:46,460 INFO L78 Accepts]: Start accepts. Automaton has 68102 states and 96764 transitions. Word has length 413 [2023-12-02 19:45:46,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:45:46,461 INFO L495 AbstractCegarLoop]: Abstraction has 68102 states and 96764 transitions. [2023-12-02 19:45:46,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 19:45:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 68102 states and 96764 transitions. [2023-12-02 19:45:46,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-02 19:45:46,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:46,466 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:45:46,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 19:45:46,466 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 19:45:46,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:46,467 INFO L85 PathProgramCache]: Analyzing trace with hash 558977475, now seen corresponding path program 1 times [2023-12-02 19:45:46,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:46,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288791660] [2023-12-02 19:45:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:46,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:45:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4755 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4745 trivial. 0 not checked. [2023-12-02 19:45:46,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:45:46,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288791660] [2023-12-02 19:45:46,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288791660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:45:46,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:45:46,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:45:46,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923962684] [2023-12-02 19:45:46,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:45:46,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:45:46,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:45:46,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:45:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:45:46,930 INFO L87 Difference]: Start difference. First operand 68102 states and 96764 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-02 19:45:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:45:51,712 INFO L93 Difference]: Finished difference Result 68108 states and 96769 transitions. [2023-12-02 19:45:51,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:45:51,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 417 [2023-12-02 19:45:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:45:51,924 INFO L225 Difference]: With dead ends: 68108 [2023-12-02 19:45:51,924 INFO L226 Difference]: Without dead ends: 68106 [2023-12-02 19:45:51,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:45:51,947 INFO L413 NwaCegarLoop]: 2445 mSDtfsCounter, 2662 mSDsluCounter, 4865 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2673 SdHoareTripleChecker+Valid, 7310 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:45:51,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2673 Valid, 7310 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 19:45:52,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68106 states. [2023-12-02 19:45:56,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68106 to 68106. [2023-12-02 19:45:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68106 states, 41099 states have (on average 1.297038857393124) internal successors, (53307), 43144 states have internal predecessors, (53307), 21732 states have call successors, (21732), 5272 states have call predecessors, (21732), 5271 states have return successors, (21728), 20479 states have call predecessors, (21728), 21728 states have call successors, (21728) [2023-12-02 19:45:56,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68106 states to 68106 states and 96767 transitions. [2023-12-02 19:45:56,794 INFO L78 Accepts]: Start accepts. Automaton has 68106 states and 96767 transitions. Word has length 417 [2023-12-02 19:45:56,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:45:56,795 INFO L495 AbstractCegarLoop]: Abstraction has 68106 states and 96767 transitions. [2023-12-02 19:45:56,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-02 19:45:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand 68106 states and 96767 transitions. [2023-12-02 19:45:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-02 19:45:56,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:56,802 INFO L195 NwaCegarLoop]: trace histogram [38, 34, 34, 34, 34, 34, 34, 3, 3, 3, 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] [2023-12-02 19:45:56,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 19:45:56,803 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 19:45:56,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:56,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1189759910, now seen corresponding path program 1 times [2023-12-02 19:45:56,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:56,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449695794] [2023-12-02 19:45:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:56,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:45:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4790 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4783 trivial. 0 not checked. [2023-12-02 19:45:57,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:45:57,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449695794] [2023-12-02 19:45:57,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449695794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:45:57,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:45:57,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:45:57,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802903115] [2023-12-02 19:45:57,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:45:57,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:45:57,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:45:57,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:45:57,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:45:57,109 INFO L87 Difference]: Start difference. First operand 68106 states and 96767 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2023-12-02 19:46:05,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:46:05,276 INFO L93 Difference]: Finished difference Result 168450 states and 239400 transitions. [2023-12-02 19:46:05,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:46:05,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 417 [2023-12-02 19:46:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:46:05,721 INFO L225 Difference]: With dead ends: 168450 [2023-12-02 19:46:05,721 INFO L226 Difference]: Without dead ends: 100460 [2023-12-02 19:46:06,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:46:06,063 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 2593 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 6606 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:46:06,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2593 Valid, 6606 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 19:46:06,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100460 states. [2023-12-02 19:46:13,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100460 to 100380. [2023-12-02 19:46:13,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100380 states, 60635 states have (on average 1.2970891399356808) internal successors, (78649), 63618 states have internal predecessors, (78649), 31980 states have call successors, (31980), 7762 states have call predecessors, (31980), 7761 states have return successors, (31976), 30171 states have call predecessors, (31976), 31976 states have call successors, (31976) [2023-12-02 19:46:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100380 states to 100380 states and 142605 transitions. [2023-12-02 19:46:13,831 INFO L78 Accepts]: Start accepts. Automaton has 100380 states and 142605 transitions. Word has length 417 [2023-12-02 19:46:13,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:46:13,831 INFO L495 AbstractCegarLoop]: Abstraction has 100380 states and 142605 transitions. [2023-12-02 19:46:13,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2023-12-02 19:46:13,831 INFO L276 IsEmpty]: Start isEmpty. Operand 100380 states and 142605 transitions. [2023-12-02 19:46:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-02 19:46:13,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:46:13,836 INFO L195 NwaCegarLoop]: trace histogram [38, 34, 34, 34, 34, 34, 34, 3, 3, 3, 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] [2023-12-02 19:46:13,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 19:46:13,837 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 19:46:13,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:46:13,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1036805210, now seen corresponding path program 1 times [2023-12-02 19:46:13,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:46:13,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432840315] [2023-12-02 19:46:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:46:13,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:46:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:46:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4791 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4784 trivial. 0 not checked. [2023-12-02 19:46:14,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:46:14,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432840315] [2023-12-02 19:46:14,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432840315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:46:14,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:46:14,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:46:14,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708568324] [2023-12-02 19:46:14,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:46:14,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:46:14,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:46:14,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:46:14,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:46:14,040 INFO L87 Difference]: Start difference. First operand 100380 states and 142605 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 19:46:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:46:25,044 INFO L93 Difference]: Finished difference Result 240712 states and 341410 transitions. [2023-12-02 19:46:25,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:46:25,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 415 [2023-12-02 19:46:25,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:46:25,757 INFO L225 Difference]: With dead ends: 240712 [2023-12-02 19:46:25,757 INFO L226 Difference]: Without dead ends: 140448 [2023-12-02 19:46:25,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:46:25,988 INFO L413 NwaCegarLoop]: 3235 mSDtfsCounter, 2552 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2552 SdHoareTripleChecker+Valid, 5640 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:46:25,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2552 Valid, 5640 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 19:46:26,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140448 states. [2023-12-02 19:46:36,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140448 to 140324. [2023-12-02 19:46:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140324 states, 84577 states have (on average 1.2944772219397709) internal successors, (109483), 88890 states have internal predecessors, (109483), 44602 states have call successors, (44602), 11142 states have call predecessors, (44602), 11141 states have return successors, (44598), 41899 states have call predecessors, (44598), 44598 states have call successors, (44598) [2023-12-02 19:46:37,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140324 states to 140324 states and 198683 transitions. [2023-12-02 19:46:37,388 INFO L78 Accepts]: Start accepts. Automaton has 140324 states and 198683 transitions. Word has length 415 [2023-12-02 19:46:37,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:46:37,389 INFO L495 AbstractCegarLoop]: Abstraction has 140324 states and 198683 transitions. [2023-12-02 19:46:37,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 19:46:37,389 INFO L276 IsEmpty]: Start isEmpty. Operand 140324 states and 198683 transitions. [2023-12-02 19:46:37,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-12-02 19:46:37,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:46:37,395 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 7, 6, 6, 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] [2023-12-02 19:46:37,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 19:46:37,395 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 19:46:37,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:46:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash 539636608, now seen corresponding path program 1 times [2023-12-02 19:46:37,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:46:37,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334801580] [2023-12-02 19:46:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:46:37,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:46:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:46:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4776 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4764 trivial. 0 not checked. [2023-12-02 19:46:38,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:46:38,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334801580] [2023-12-02 19:46:38,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334801580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:46:38,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:46:38,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:46:38,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145040777] [2023-12-02 19:46:38,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:46:38,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:46:38,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:46:38,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:46:38,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:46:38,260 INFO L87 Difference]: Start difference. First operand 140324 states and 198683 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-02 19:46:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:46:48,426 INFO L93 Difference]: Finished difference Result 140330 states and 198688 transitions. [2023-12-02 19:46:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:46:48,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 421 [2023-12-02 19:46:48,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:46:49,160 INFO L225 Difference]: With dead ends: 140330 [2023-12-02 19:46:49,161 INFO L226 Difference]: Without dead ends: 140328 [2023-12-02 19:46:49,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:46:49,214 INFO L413 NwaCegarLoop]: 2445 mSDtfsCounter, 2662 mSDsluCounter, 4865 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 7310 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:46:49,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2672 Valid, 7310 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 19:46:49,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140328 states. [2023-12-02 19:47:00,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140328 to 140328. [2023-12-02 19:47:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140328 states, 84580 states have (on average 1.294466777015843) internal successors, (109486), 88893 states have internal predecessors, (109486), 44602 states have call successors, (44602), 11143 states have call predecessors, (44602), 11142 states have return successors, (44598), 41899 states have call predecessors, (44598), 44598 states have call successors, (44598) [2023-12-02 19:47:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140328 states to 140328 states and 198686 transitions. [2023-12-02 19:47:01,184 INFO L78 Accepts]: Start accepts. Automaton has 140328 states and 198686 transitions. Word has length 421 [2023-12-02 19:47:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:47:01,184 INFO L495 AbstractCegarLoop]: Abstraction has 140328 states and 198686 transitions. [2023-12-02 19:47:01,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-02 19:47:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 140328 states and 198686 transitions. [2023-12-02 19:47:01,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-02 19:47:01,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:47:01,191 INFO L195 NwaCegarLoop]: trace histogram [38, 34, 34, 34, 34, 34, 34, 3, 3, 3, 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] [2023-12-02 19:47:01,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 19:47:01,192 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 19:47:01,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:47:01,193 INFO L85 PathProgramCache]: Analyzing trace with hash -516216298, now seen corresponding path program 1 times [2023-12-02 19:47:01,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:47:01,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066094971] [2023-12-02 19:47:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:47:01,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:47:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:47:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4791 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4784 trivial. 0 not checked. [2023-12-02 19:47:01,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:47:01,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066094971] [2023-12-02 19:47:01,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066094971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:47:01,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:47:01,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:47:01,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835400593] [2023-12-02 19:47:01,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:47:01,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:47:01,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:47:01,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:47:01,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:47:01,488 INFO L87 Difference]: Start difference. First operand 140328 states and 198686 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 19:47:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:47:16,983 INFO L93 Difference]: Finished difference Result 330950 states and 467412 transitions. [2023-12-02 19:47:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:47:16,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 416 [2023-12-02 19:47:16,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:47:17,946 INFO L225 Difference]: With dead ends: 330950 [2023-12-02 19:47:17,946 INFO L226 Difference]: Without dead ends: 190738 [2023-12-02 19:47:18,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:47:18,286 INFO L413 NwaCegarLoop]: 3415 mSDtfsCounter, 2551 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2551 SdHoareTripleChecker+Valid, 5820 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:47:18,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2551 Valid, 5820 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 19:47:18,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190738 states. [2023-12-02 19:47:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190738 to 190578. [2023-12-02 19:47:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190578 states, 114492 states have (on average 1.290788876078678) internal successors, (147785), 120633 states have internal predecessors, (147785), 60356 states have call successors, (60356), 15727 states have call predecessors, (60356), 15726 states have return successors, (60352), 56331 states have call predecessors, (60352), 60352 states have call successors, (60352) [2023-12-02 19:47:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190578 states to 190578 states and 268493 transitions. [2023-12-02 19:47:34,024 INFO L78 Accepts]: Start accepts. Automaton has 190578 states and 268493 transitions. Word has length 416 [2023-12-02 19:47:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:47:34,025 INFO L495 AbstractCegarLoop]: Abstraction has 190578 states and 268493 transitions. [2023-12-02 19:47:34,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 19:47:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 190578 states and 268493 transitions. [2023-12-02 19:47:34,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-12-02 19:47:34,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:47:34,031 INFO L195 NwaCegarLoop]: trace histogram [38, 34, 34, 34, 34, 34, 34, 3, 3, 3, 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] [2023-12-02 19:47:34,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 19:47:34,032 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 19:47:34,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:47:34,032 INFO L85 PathProgramCache]: Analyzing trace with hash 824404094, now seen corresponding path program 1 times [2023-12-02 19:47:34,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:47:34,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577739470] [2023-12-02 19:47:34,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:47:34,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:47:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:47:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4790 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4783 trivial. 0 not checked. [2023-12-02 19:47:34,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:47:34,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577739470] [2023-12-02 19:47:34,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577739470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:47:34,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:47:34,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:47:34,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364905526] [2023-12-02 19:47:34,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:47:34,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:47:34,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:47:34,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:47:34,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:47:34,679 INFO L87 Difference]: Start difference. First operand 190578 states and 268493 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-12-02 19:47:55,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:47:55,908 INFO L93 Difference]: Finished difference Result 467969 states and 659664 transitions. [2023-12-02 19:47:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:47:55,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 422 [2023-12-02 19:47:55,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:47:57,148 INFO L225 Difference]: With dead ends: 467969 [2023-12-02 19:47:57,149 INFO L226 Difference]: Without dead ends: 277507 [2023-12-02 19:47:57,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:47:57,628 INFO L413 NwaCegarLoop]: 4055 mSDtfsCounter, 2594 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2594 SdHoareTripleChecker+Valid, 6475 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:47:57,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2594 Valid, 6475 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 19:47:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277507 states.