./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.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_1ad8502a-4f09-46bc-8981-dcf1c855c51c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad8502a-4f09-46bc-8981-dcf1c855c51c/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_1ad8502a-4f09-46bc-8981-dcf1c855c51c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad8502a-4f09-46bc-8981-dcf1c855c51c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad8502a-4f09-46bc-8981-dcf1c855c51c/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_1ad8502a-4f09-46bc-8981-dcf1c855c51c/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 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:52:29,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:52:29,347 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad8502a-4f09-46bc-8981-dcf1c855c51c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 12:52:29,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:52:29,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:52:29,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:52:29,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:52:29,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:52:29,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:52:29,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:52:29,380 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:52:29,380 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:52:29,381 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:52:29,381 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:52:29,382 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:52:29,382 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:52:29,383 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:52:29,383 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:52:29,384 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:52:29,384 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:52:29,385 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:52:29,385 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:52:29,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:52:29,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:52:29,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:52:29,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:52:29,388 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:52:29,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:52:29,389 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:52:29,389 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:52:29,389 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:52:29,390 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:52:29,390 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:52:29,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:52:29,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:52:29,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:52:29,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:52:29,391 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:52:29,392 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:52:29,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:52:29,392 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:52:29,392 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:52:29,392 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:52:29,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:52:29,393 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_1ad8502a-4f09-46bc-8981-dcf1c855c51c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad8502a-4f09-46bc-8981-dcf1c855c51c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 [2023-12-02 12:52:29,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:52:29,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:52:29,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:52:29,633 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:52:29,634 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:52:29,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad8502a-4f09-46bc-8981-dcf1c855c51c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2023-12-02 12:52:32,438 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:52:32,949 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:52:32,949 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad8502a-4f09-46bc-8981-dcf1c855c51c/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2023-12-02 12:52:32,996 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad8502a-4f09-46bc-8981-dcf1c855c51c/bin/utaipan-verify-nQ1chXbOIh/data/6f97da334/c8c5d9e05ce740f387a3177872f01d1c/FLAG29c671bed [2023-12-02 12:52:33,008 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad8502a-4f09-46bc-8981-dcf1c855c51c/bin/utaipan-verify-nQ1chXbOIh/data/6f97da334/c8c5d9e05ce740f387a3177872f01d1c [2023-12-02 12:52:33,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:52:33,011 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:52:33,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:52:33,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:52:33,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:52:33,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:52:33" (1/1) ... [2023-12-02 12:52:33,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e42359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:33, skipping insertion in model container [2023-12-02 12:52:33,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:52:33" (1/1) ... [2023-12-02 12:52:33,220 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:52:37,697 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_1ad8502a-4f09-46bc-8981-dcf1c855c51c/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2023-12-02 12:52:37,701 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_1ad8502a-4f09-46bc-8981-dcf1c855c51c/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2023-12-02 12:52:37,702 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_1ad8502a-4f09-46bc-8981-dcf1c855c51c/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2023-12-02 12:52:37,703 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_1ad8502a-4f09-46bc-8981-dcf1c855c51c/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2023-12-02 12:52:37,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:52:37,788 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:52:37,885 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"); [5983] [2023-12-02 12:52:37,887 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)); [5990] [2023-12-02 12:52:37,887 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5997] [2023-12-02 12:52:37,890 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/7cdfae59d3ac602223400f61d8829e28/klever-core-work-dir/520b8de/linux-kernel-locking-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [6068-6069] [2023-12-02 12:52:37,890 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"); [6074-6076] [2023-12-02 12:52:37,891 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; subl %1,%0": "+m" (v->counter): "ir" (i)); [6103] [2023-12-02 12:52:37,891 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)); [6110] [2023-12-02 12:52:37,891 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0": "+m" (v->counter)); [6117] [2023-12-02 12:52:37,893 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (__preempt_count)); [6195] [2023-12-02 12:52:37,893 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (__preempt_count)); [6198] [2023-12-02 12:52:37,893 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%P0": "+m" (__preempt_count): "qi" (val)); [6200] [2023-12-02 12:52:37,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (__preempt_count)); [6205] [2023-12-02 12:52:37,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (__preempt_count)); [6208] [2023-12-02 12:52:37,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%P0": "+m" (__preempt_count): "ri" (val)); [6210] [2023-12-02 12:52:37,894 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (__preempt_count)); [6215] [2023-12-02 12:52:37,895 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (__preempt_count)); [6218] [2023-12-02 12:52:37,895 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%P0": "+m" (__preempt_count): "ri" (val)); [6220] [2023-12-02 12:52:37,895 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (__preempt_count)); [6225] [2023-12-02 12:52:37,895 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (__preempt_count)); [6228] [2023-12-02 12:52:37,896 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%P0": "+m" (__preempt_count): "re" (val)); [6230] [2023-12-02 12:52:37,896 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (__preempt_count)); [6268] [2023-12-02 12:52:37,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (__preempt_count)); [6271] [2023-12-02 12:52:37,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%P0": "+m" (__preempt_count): "qi" (- val)); [6273] [2023-12-02 12:52:37,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (__preempt_count)); [6278] [2023-12-02 12:52:37,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (__preempt_count)); [6281] [2023-12-02 12:52:37,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%P0": "+m" (__preempt_count): "ri" (- val)); [6283] [2023-12-02 12:52:37,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (__preempt_count)); [6288] [2023-12-02 12:52:37,899 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (__preempt_count)); [6291] [2023-12-02 12:52:37,899 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%P0": "+m" (__preempt_count): "ri" (- val)); [6293] [2023-12-02 12:52:37,899 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (__preempt_count)); [6298] [2023-12-02 12:52:37,900 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (__preempt_count)); [6301] [2023-12-02 12:52:37,900 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%P0": "+m" (__preempt_count): "re" (- val)); [6303] [2023-12-02 12:52:37,904 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %1,%0": "=q" (ret): "m" (*((unsigned char volatile *)addr)): "memory"); [6482] [2023-12-02 12:52:37,904 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [6490] [2023-12-02 12:52:37,905 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [6497] [2023-12-02 12:52:37,907 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6560] [2023-12-02 12:52:37,908 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 *)"include/linux/mm.h"), "i" (488), "i" (12UL)); [6617-6618] [2023-12-02 12:52:37,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ (" addl %1,%0\n adcl $0xffff,%0": "=r" (sum): "r" (sum << 16), "0" (sum & 4294901760U)); [6663] [2023-12-02 12:52:37,914 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (79), "i" (12UL)); [6733-6734] [2023-12-02 12:52:37,915 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (91), "i" (12UL)); [6762-6763] [2023-12-02 12:52:37,916 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (103), "i" (12UL)); [6799-6800] [2023-12-02 12:52:37,917 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 *)"include/asm-generic/dma-mapping-common.h"), "i" (115), "i" (12UL)); [6836-6837] [2023-12-02 12:52:37,953 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7662] [2023-12-02 12:52:37,954 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [7671] [2023-12-02 12:52:38,158 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 *)"drivers/net/ethernet/sun/cassini.c"), "i" (4758), "i" (12UL)); [13504-13505] [2023-12-02 12:52:38,241 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_1ad8502a-4f09-46bc-8981-dcf1c855c51c/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2023-12-02 12:52:38,241 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_1ad8502a-4f09-46bc-8981-dcf1c855c51c/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2023-12-02 12:52:38,242 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_1ad8502a-4f09-46bc-8981-dcf1c855c51c/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2023-12-02 12:52:38,242 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_1ad8502a-4f09-46bc-8981-dcf1c855c51c/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2023-12-02 12:52:38,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:52:38,627 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 12:52:38,635 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:52:38,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38 WrapperNode [2023-12-02 12:52:38,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:52:38,638 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:52:38,638 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:52:38,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:52:38,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38" (1/1) ... [2023-12-02 12:52:38,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38" (1/1) ... [2023-12-02 12:52:39,107 INFO L138 Inliner]: procedures = 676, calls = 4336, calls flagged for inlining = 327, calls inlined = 304, statements flattened = 12813 [2023-12-02 12:52:39,107 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:52:39,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:52:39,108 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:52:39,108 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:52:39,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38" (1/1) ... [2023-12-02 12:52:39,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38" (1/1) ... [2023-12-02 12:52:39,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38" (1/1) ... [2023-12-02 12:52:39,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38" (1/1) ... [2023-12-02 12:52:39,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38" (1/1) ... [2023-12-02 12:52:39,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38" (1/1) ... [2023-12-02 12:52:39,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38" (1/1) ... [2023-12-02 12:52:39,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38" (1/1) ... [2023-12-02 12:52:39,637 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:52:39,638 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:52:39,638 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:52:39,638 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:52:39,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38" (1/1) ... [2023-12-02 12:52:39,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:52:39,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad8502a-4f09-46bc-8981-dcf1c855c51c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:52:39,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad8502a-4f09-46bc-8981-dcf1c855c51c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:52:39,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad8502a-4f09-46bc-8981-dcf1c855c51c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:52:39,701 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-12-02 12:52:39,701 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-12-02 12:52:39,701 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_read [2023-12-02 12:52:39,701 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_read [2023-12-02 12:52:39,701 INFO L130 BoogieDeclarations]: Found specification of procedure cas_pcs_link_check [2023-12-02 12:52:39,701 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_pcs_link_check [2023-12-02 12:52:39,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_121 [2023-12-02 12:52:39,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_121 [2023-12-02 12:52:39,702 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-12-02 12:52:39,702 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-12-02 12:52:39,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 12:52:39,702 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 12:52:39,703 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-12-02 12:52:39,703 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-12-02 12:52:39,703 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2023-12-02 12:52:39,703 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2023-12-02 12:52:39,703 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 12:52:39,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 12:52:39,704 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mii_link_check [2023-12-02 12:52:39,704 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mii_link_check [2023-12-02 12:52:39,704 INFO L130 BoogieDeclarations]: Found specification of procedure cas_calc_tabort [2023-12-02 12:52:39,704 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_calc_tabort [2023-12-02 12:52:39,704 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2023-12-02 12:52:39,704 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2023-12-02 12:52:39,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2023-12-02 12:52:39,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2023-12-02 12:52:39,704 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2023-12-02 12:52:39,704 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2023-12-02 12:52:39,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 12:52:39,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 12:52:39,705 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_147 [2023-12-02 12:52:39,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_147 [2023-12-02 12:52:39,705 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2023-12-02 12:52:39,705 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2023-12-02 12:52:39,705 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-12-02 12:52:39,705 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-12-02 12:52:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2023-12-02 12:52:39,706 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2023-12-02 12:52:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure cas_lock_tx [2023-12-02 12:52:39,706 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_lock_tx [2023-12-02 12:52:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-12-02 12:52:39,706 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-12-02 12:52:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-12-02 12:52:39,706 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-12-02 12:52:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 12:52:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 12:52:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure cas_disable_irq [2023-12-02 12:52:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_disable_irq [2023-12-02 12:52:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure cas_free_rxds [2023-12-02 12:52:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_free_rxds [2023-12-02 12:52:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_page [2023-12-02 12:52:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_page [2023-12-02 12:52:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure cas_open [2023-12-02 12:52:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_open [2023-12-02 12:52:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure cas_interrupt [2023-12-02 12:52:39,708 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_interrupt [2023-12-02 12:52:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure cas_tx_tiny_free [2023-12-02 12:52:39,708 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_tx_tiny_free [2023-12-02 12:52:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2023-12-02 12:52:39,708 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2023-12-02 12:52:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure tx_tiny_map [2023-12-02 12:52:39,708 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_tiny_map [2023-12-02 12:52:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_init [2023-12-02 12:52:39,709 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_init [2023-12-02 12:52:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2023-12-02 12:52:39,709 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2023-12-02 12:52:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size_set [2023-12-02 12:52:39,709 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size_set [2023-12-02 12:52:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2023-12-02 12:52:39,709 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2023-12-02 12:52:39,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 12:52:39,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 12:52:39,710 INFO L130 BoogieDeclarations]: Found specification of procedure cas_enable_irq [2023-12-02 12:52:39,710 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_enable_irq [2023-12-02 12:52:39,710 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-12-02 12:52:39,710 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-12-02 12:52:39,710 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-12-02 12:52:39,710 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-12-02 12:52:39,710 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_dequeue [2023-12-02 12:52:39,711 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_dequeue [2023-12-02 12:52:39,711 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-12-02 12:52:39,711 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-12-02 12:52:39,711 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-12-02 12:52:39,711 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-12-02 12:52:39,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 12:52:39,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 12:52:39,711 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 12:52:39,711 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 12:52:39,711 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2023-12-02 12:52:39,712 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2023-12-02 12:52:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 12:52:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_108 [2023-12-02 12:52:39,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_108 [2023-12-02 12:52:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2023-12-02 12:52:39,712 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2023-12-02 12:52:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure cas_set_multicast [2023-12-02 12:52:39,712 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_set_multicast [2023-12-02 12:52:39,712 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 12:52:39,713 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 12:52:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-12-02 12:52:39,713 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-12-02 12:52:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure cas_spare_free [2023-12-02 12:52:39,713 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_spare_free [2023-12-02 12:52:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure cas_tx_timeout [2023-12-02 12:52:39,713 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_tx_timeout [2023-12-02 12:52:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 12:52:39,713 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 12:52:39,713 INFO L130 BoogieDeclarations]: Found specification of procedure cas_read_pcs_link_mode [2023-12-02 12:52:39,714 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_read_pcs_link_mode [2023-12-02 12:52:39,714 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-12-02 12:52:39,714 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-12-02 12:52:39,714 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 12:52:39,714 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 12:52:39,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 12:52:39,714 INFO L130 BoogieDeclarations]: Found specification of procedure cas_close [2023-12-02 12:52:39,714 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_close [2023-12-02 12:52:39,714 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_swap [2023-12-02 12:52:39,714 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_swap [2023-12-02 12:52:39,714 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-12-02 12:52:39,715 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-12-02 12:52:39,715 INFO L130 BoogieDeclarations]: Found specification of procedure cas_netpoll [2023-12-02 12:52:39,715 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_netpoll [2023-12-02 12:52:39,715 INFO L130 BoogieDeclarations]: Found specification of procedure cas_hard_reset [2023-12-02 12:52:39,715 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_hard_reset [2023-12-02 12:52:39,715 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-12-02 12:52:39,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-12-02 12:52:39,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 12:52:39,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 12:52:39,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 12:52:39,715 INFO L130 BoogieDeclarations]: Found specification of procedure cas_rxc_init [2023-12-02 12:52:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_rxc_init [2023-12-02 12:52:39,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 12:52:39,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 12:52:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 12:52:39,716 INFO L130 BoogieDeclarations]: Found specification of procedure cas_clear_mac_err [2023-12-02 12:52:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_clear_mac_err [2023-12-02 12:52:39,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-12-02 12:52:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-12-02 12:52:39,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-12-02 12:52:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-12-02 12:52:39,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-12-02 12:52:39,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-12-02 12:52:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2023-12-02 12:52:39,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2023-12-02 12:52:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2023-12-02 12:52:39,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2023-12-02 12:52:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure cas_remove_one [2023-12-02 12:52:39,717 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_remove_one [2023-12-02 12:52:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_NOT_ARG_SIGN [2023-12-02 12:52:39,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_NOT_ARG_SIGN [2023-12-02 12:52:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-12-02 12:52:39,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-12-02 12:52:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-12-02 12:52:39,718 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-12-02 12:52:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 12:52:39,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 12:52:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2023-12-02 12:52:39,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2023-12-02 12:52:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 12:52:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2023-12-02 12:52:39,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2023-12-02 12:52:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:52:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_init [2023-12-02 12:52:39,718 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_init [2023-12-02 12:52:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 12:52:39,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 12:52:39,719 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 12:52:39,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 12:52:39,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 12:52:39,719 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 12:52:39,719 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 12:52:39,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 12:52:39,719 INFO L130 BoogieDeclarations]: Found specification of procedure cas_set_link_modes [2023-12-02 12:52:39,719 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_set_link_modes [2023-12-02 12:52:39,719 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_printk [2023-12-02 12:52:39,719 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_printk [2023-12-02 12:52:39,719 INFO L130 BoogieDeclarations]: Found specification of procedure cas_link_timer [2023-12-02 12:52:39,719 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_link_timer [2023-12-02 12:52:39,720 INFO L130 BoogieDeclarations]: Found specification of procedure cas_read_mii_link_mode [2023-12-02 12:52:39,720 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_read_mii_link_mode [2023-12-02 12:52:39,720 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2023-12-02 12:52:39,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2023-12-02 12:52:39,720 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-12-02 12:52:39,720 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-12-02 12:52:39,720 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-12-02 12:52:39,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-12-02 12:52:39,720 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-12-02 12:52:39,720 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-12-02 12:52:39,720 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2023-12-02 12:52:39,720 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2023-12-02 12:52:39,721 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-12-02 12:52:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-12-02 12:52:39,721 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 12:52:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 12:52:39,721 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-12-02 12:52:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-12-02 12:52:39,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-12-02 12:52:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-12-02 12:52:39,721 INFO L130 BoogieDeclarations]: Found specification of procedure csum_unfold [2023-12-02 12:52:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_unfold [2023-12-02 12:52:39,721 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2023-12-02 12:52:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2023-12-02 12:52:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-12-02 12:52:39,722 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-12-02 12:52:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure cas_entropy_gather [2023-12-02 12:52:39,722 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_entropy_gather [2023-12-02 12:52:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure cas_resume [2023-12-02 12:52:39,722 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_resume [2023-12-02 12:52:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:52:39,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:52:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_alloc [2023-12-02 12:52:39,722 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_alloc [2023-12-02 12:52:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 12:52:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 12:52:39,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 12:52:39,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 12:52:39,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 12:52:39,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 12:52:39,723 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-12-02 12:52:39,723 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-12-02 12:52:39,723 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mif_poll [2023-12-02 12:52:39,723 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mif_poll [2023-12-02 12:52:39,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-12-02 12:52:39,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-12-02 12:52:39,723 INFO L130 BoogieDeclarations]: Found specification of procedure cas_unlock_tx [2023-12-02 12:52:39,723 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_unlock_tx [2023-12-02 12:52:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 12:52:39,724 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 12:52:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_133 [2023-12-02 12:52:39,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_133 [2023-12-02 12:52:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice [2023-12-02 12:52:39,724 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice [2023-12-02 12:52:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_135 [2023-12-02 12:52:39,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_135 [2023-12-02 12:52:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2023-12-02 12:52:39,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2023-12-02 12:52:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2023-12-02 12:52:39,725 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2023-12-02 12:52:39,725 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-12-02 12:52:39,725 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-12-02 12:52:39,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 12:52:39,725 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 12:52:39,725 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 12:52:39,725 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 12:52:39,725 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-12-02 12:52:39,725 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-12-02 12:52:39,725 INFO L130 BoogieDeclarations]: Found specification of procedure tx_tiny_buf [2023-12-02 12:52:39,725 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_tiny_buf [2023-12-02 12:52:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mac_reset [2023-12-02 12:52:39,726 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mac_reset [2023-12-02 12:52:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_cas [2023-12-02 12:52:39,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_cas [2023-12-02 12:52:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 12:52:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 12:52:39,726 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 12:52:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_frag_set_page [2023-12-02 12:52:39,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_frag_set_page [2023-12-02 12:52:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 12:52:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure cas_get_regs_len [2023-12-02 12:52:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_get_regs_len [2023-12-02 12:52:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure cas_reset [2023-12-02 12:52:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_reset [2023-12-02 12:52:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2023-12-02 12:52:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2023-12-02 12:52:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_NOT_ARG_SIGN [2023-12-02 12:52:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_NOT_ARG_SIGN [2023-12-02 12:52:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2023-12-02 12:52:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2023-12-02 12:52:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_page [2023-12-02 12:52:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_page [2023-12-02 12:52:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 12:52:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 12:52:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 12:52:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2023-12-02 12:52:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2023-12-02 12:52:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-12-02 12:52:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-12-02 12:52:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure cas_nway_reset [2023-12-02 12:52:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_nway_reset [2023-12-02 12:52:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-12-02 12:52:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-12-02 12:52:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 12:52:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 12:52:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 12:52:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 12:52:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure cas_setup_multicast [2023-12-02 12:52:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_setup_multicast [2023-12-02 12:52:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_powerdown [2023-12-02 12:52:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_powerdown [2023-12-02 12:52:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_rxds_ringN [2023-12-02 12:52:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_rxds_ringN [2023-12-02 12:52:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-12-02 12:52:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-12-02 12:52:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure cas_vpd_match [2023-12-02 12:52:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_vpd_match [2023-12-02 12:52:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_83 [2023-12-02 12:52:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_83 [2023-12-02 12:52:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_81 [2023-12-02 12:52:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_81 [2023-12-02 12:52:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 12:52:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 12:52:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2023-12-02 12:52:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2023-12-02 12:52:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-12-02 12:52:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-12-02 12:52:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure page_count [2023-12-02 12:52:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure page_count [2023-12-02 12:52:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 12:52:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 12:52:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2023-12-02 12:52:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2023-12-02 12:52:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure cas_shutdown [2023-12-02 12:52:39,732 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_shutdown [2023-12-02 12:52:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure cas_begin_auto_negotiation [2023-12-02 12:52:39,732 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_begin_auto_negotiation [2023-12-02 12:52:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2023-12-02 12:52:39,732 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2023-12-02 12:52:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 12:52:39,732 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 12:52:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure cas_write_txd [2023-12-02 12:52:39,732 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_write_txd [2023-12-02 12:52:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 12:52:39,732 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 12:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_frag_ref [2023-12-02 12:52:39,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_frag_ref [2023-12-02 12:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 12:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 12:52:39,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 12:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_82 [2023-12-02 12:52:39,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_82 [2023-12-02 12:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_84 [2023-12-02 12:52:39,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_84 [2023-12-02 12:52:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_79 [2023-12-02 12:52:39,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_79 [2023-12-02 12:52:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-12-02 12:52:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-12-02 12:52:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure cas_init_hw [2023-12-02 12:52:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_init_hw [2023-12-02 12:52:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure cas_clean_rings [2023-12-02 12:52:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_clean_rings [2023-12-02 12:52:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_free [2023-12-02 12:52:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_free [2023-12-02 12:52:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-12-02 12:52:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-12-02 12:52:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_write [2023-12-02 12:52:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_write [2023-12-02 12:52:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 12:52:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 12:52:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2023-12-02 12:52:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2023-12-02 12:52:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2023-12-02 12:52:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2023-12-02 12:52:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure cas_spare_recover [2023-12-02 12:52:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_spare_recover [2023-12-02 12:52:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2023-12-02 12:52:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2023-12-02 12:52:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 12:52:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 12:52:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure cas_get_stats [2023-12-02 12:52:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_get_stats [2023-12-02 12:52:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-12-02 12:52:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-12-02 12:52:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2023-12-02 12:52:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2023-12-02 12:52:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:52:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 12:52:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 12:52:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2023-12-02 12:52:39,737 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2023-12-02 12:52:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2023-12-02 12:52:39,737 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2023-12-02 12:52:39,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_107 [2023-12-02 12:52:39,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_107 [2023-12-02 12:52:40,930 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:52:40,936 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:52:41,278 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 12:52:57,346 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:53:03,941 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:53:03,941 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-02 12:53:03,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:53:03 BoogieIcfgContainer [2023-12-02 12:53:03,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:53:03,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:53:03,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:53:03,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:53:03,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:52:33" (1/3) ... [2023-12-02 12:53:03,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfc04af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:53:03, skipping insertion in model container [2023-12-02 12:53:03,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:52:38" (2/3) ... [2023-12-02 12:53:03,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfc04af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:53:03, skipping insertion in model container [2023-12-02 12:53:03,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:53:03" (3/3) ... [2023-12-02 12:53:03,952 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2023-12-02 12:53:03,968 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:53:03,968 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-02 12:53:04,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:53:04,133 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;@b35c987, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:53:04,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 12:53:04,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 3081 states, 1759 states have (on average 1.2620807276861854) internal successors, (2220), 1838 states have internal predecessors, (2220), 1142 states have call successors, (1142), 178 states have call predecessors, (1142), 177 states have return successors, (1138), 1125 states have call predecessors, (1138), 1138 states have call successors, (1138) [2023-12-02 12:53:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 12:53:04,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:53:04,159 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-02 12:53:04,160 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 12:53:04,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:53:04,165 INFO L85 PathProgramCache]: Analyzing trace with hash 965121950, now seen corresponding path program 1 times [2023-12-02 12:53:04,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:53:04,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616768292] [2023-12-02 12:53:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:53:04,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:53:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:53:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 12:53:35,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:53:35,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616768292] [2023-12-02 12:53:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616768292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:53:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:53:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:53:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058224038] [2023-12-02 12:53:35,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:53:35,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:53:35,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:53:35,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:53:35,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:53:35,965 INFO L87 Difference]: Start difference. First operand has 3081 states, 1759 states have (on average 1.2620807276861854) internal successors, (2220), 1838 states have internal predecessors, (2220), 1142 states have call successors, (1142), 178 states have call predecessors, (1142), 177 states have return successors, (1138), 1125 states have call predecessors, (1138), 1138 states have call successors, (1138) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 12:53:38,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:53:40,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:53:42,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:53:52,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:53:59,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:53:59,780 INFO L93 Difference]: Finished difference Result 8714 states and 13186 transitions. [2023-12-02 12:53:59,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 12:53:59,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2023-12-02 12:53:59,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:53:59,842 INFO L225 Difference]: With dead ends: 8714 [2023-12-02 12:53:59,843 INFO L226 Difference]: Without dead ends: 5636 [2023-12-02 12:53:59,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:53:59,877 INFO L413 NwaCegarLoop]: 4079 mSDtfsCounter, 4306 mSDsluCounter, 11579 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 15658 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:53:59,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4325 Valid, 15658 Invalid, 2171 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2164 Invalid, 4 Unknown, 0 Unchecked, 23.1s Time] [2023-12-02 12:53:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5636 states. [2023-12-02 12:54:00,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5636 to 5628. [2023-12-02 12:54:00,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5628 states, 3208 states have (on average 1.2587281795511223) internal successors, (4038), 3359 states have internal predecessors, (4038), 2080 states have call successors, (2080), 346 states have call predecessors, (2080), 337 states have return successors, (2158), 2026 states have call predecessors, (2158), 2074 states have call successors, (2158) [2023-12-02 12:54:00,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 8276 transitions. [2023-12-02 12:54:00,319 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 8276 transitions. Word has length 35 [2023-12-02 12:54:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:54:00,320 INFO L495 AbstractCegarLoop]: Abstraction has 5628 states and 8276 transitions. [2023-12-02 12:54:00,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 12:54:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 8276 transitions. [2023-12-02 12:54:00,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 12:54:00,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:54:00,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-02 12:54:00,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:54:00,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 12:54:00,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:54:00,325 INFO L85 PathProgramCache]: Analyzing trace with hash 688519531, now seen corresponding path program 1 times [2023-12-02 12:54:00,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:54:00,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98001323] [2023-12-02 12:54:00,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:54:00,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:54:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:54:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 12:54:29,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:54:29,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98001323] [2023-12-02 12:54:29,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98001323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:54:29,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:54:29,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:54:29,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645693749] [2023-12-02 12:54:29,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:54:29,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:54:29,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:54:29,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:54:29,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:54:29,915 INFO L87 Difference]: Start difference. First operand 5628 states and 8276 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 12:54:32,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:54:34,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:54:36,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:54:48,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:54:48,903 INFO L93 Difference]: Finished difference Result 5638 states and 8285 transitions. [2023-12-02 12:54:48,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:54:48,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2023-12-02 12:54:48,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:54:48,945 INFO L225 Difference]: With dead ends: 5638 [2023-12-02 12:54:48,945 INFO L226 Difference]: Without dead ends: 5636 [2023-12-02 12:54:48,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:54:48,950 INFO L413 NwaCegarLoop]: 3946 mSDtfsCounter, 4448 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4465 SdHoareTripleChecker+Valid, 11811 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:54:48,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4465 Valid, 11811 Invalid, 1618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1614 Invalid, 3 Unknown, 0 Unchecked, 18.5s Time] [2023-12-02 12:54:48,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5636 states. [2023-12-02 12:54:49,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5636 to 5636. [2023-12-02 12:54:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 3214 states have (on average 1.2582451773490977) internal successors, (4044), 3365 states have internal predecessors, (4044), 2080 states have call successors, (2080), 348 states have call predecessors, (2080), 339 states have return successors, (2158), 2026 states have call predecessors, (2158), 2074 states have call successors, (2158) [2023-12-02 12:54:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 8282 transitions. [2023-12-02 12:54:49,301 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 8282 transitions. Word has length 40 [2023-12-02 12:54:49,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:54:49,302 INFO L495 AbstractCegarLoop]: Abstraction has 5636 states and 8282 transitions. [2023-12-02 12:54:49,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 12:54:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 8282 transitions. [2023-12-02 12:54:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 12:54:49,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:54:49,305 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-02 12:54:49,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:54:49,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 12:54:49,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:54:49,307 INFO L85 PathProgramCache]: Analyzing trace with hash -212130096, now seen corresponding path program 1 times [2023-12-02 12:54:49,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:54:49,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119025904] [2023-12-02 12:54:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:54:49,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:55:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:55:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 12:55:21,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:55:21,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119025904] [2023-12-02 12:55:21,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119025904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:55:21,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:55:21,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:55:21,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969533812] [2023-12-02 12:55:21,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:55:21,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:55:21,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:55:21,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:55:21,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:55:21,524 INFO L87 Difference]: Start difference. First operand 5636 states and 8282 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 12:55:23,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:55:25,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:55:28,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:55:39,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:55:39,737 INFO L93 Difference]: Finished difference Result 5646 states and 8291 transitions. [2023-12-02 12:55:39,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:55:39,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2023-12-02 12:55:39,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:55:39,777 INFO L225 Difference]: With dead ends: 5646 [2023-12-02 12:55:39,777 INFO L226 Difference]: Without dead ends: 5644 [2023-12-02 12:55:39,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:55:39,782 INFO L413 NwaCegarLoop]: 3946 mSDtfsCounter, 4447 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4463 SdHoareTripleChecker+Valid, 11811 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:55:39,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4463 Valid, 11811 Invalid, 1618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1614 Invalid, 3 Unknown, 0 Unchecked, 17.7s Time] [2023-12-02 12:55:39,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2023-12-02 12:55:40,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5644. [2023-12-02 12:55:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5644 states, 3220 states have (on average 1.2577639751552796) internal successors, (4050), 3371 states have internal predecessors, (4050), 2080 states have call successors, (2080), 350 states have call predecessors, (2080), 341 states have return successors, (2158), 2026 states have call predecessors, (2158), 2074 states have call successors, (2158) [2023-12-02 12:55:40,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5644 states to 5644 states and 8288 transitions. [2023-12-02 12:55:40,299 INFO L78 Accepts]: Start accepts. Automaton has 5644 states and 8288 transitions. Word has length 46 [2023-12-02 12:55:40,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:55:40,300 INFO L495 AbstractCegarLoop]: Abstraction has 5644 states and 8288 transitions. [2023-12-02 12:55:40,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 12:55:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5644 states and 8288 transitions. [2023-12-02 12:55:40,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 12:55:40,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:55:40,303 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2023-12-02 12:55:40,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 12:55:40,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 12:55:40,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:55:40,304 INFO L85 PathProgramCache]: Analyzing trace with hash -213654261, now seen corresponding path program 1 times [2023-12-02 12:55:40,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:55:40,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224047065] [2023-12-02 12:55:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:55:40,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:56:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:56:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 12:56:12,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:56:12,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224047065] [2023-12-02 12:56:12,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224047065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:56:12,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:56:12,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:56:12,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45300268] [2023-12-02 12:56:12,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:56:12,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:56:12,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:56:12,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:56:12,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:56:12,469 INFO L87 Difference]: Start difference. First operand 5644 states and 8288 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 12:56:14,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:56:16,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:56:19,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:56:30,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:56:30,000 INFO L93 Difference]: Finished difference Result 5654 states and 8297 transitions. [2023-12-02 12:56:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:56:30,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2023-12-02 12:56:30,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:56:30,033 INFO L225 Difference]: With dead ends: 5654 [2023-12-02 12:56:30,033 INFO L226 Difference]: Without dead ends: 5652 [2023-12-02 12:56:30,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:56:30,037 INFO L413 NwaCegarLoop]: 3946 mSDtfsCounter, 4448 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4463 SdHoareTripleChecker+Valid, 11811 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:56:30,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4463 Valid, 11811 Invalid, 1618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1614 Invalid, 3 Unknown, 0 Unchecked, 17.0s Time] [2023-12-02 12:56:30,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2023-12-02 12:56:30,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 5652. [2023-12-02 12:56:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 3226 states have (on average 1.2572845629262244) internal successors, (4056), 3377 states have internal predecessors, (4056), 2080 states have call successors, (2080), 352 states have call predecessors, (2080), 343 states have return successors, (2158), 2026 states have call predecessors, (2158), 2074 states have call successors, (2158) [2023-12-02 12:56:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 8294 transitions. [2023-12-02 12:56:30,367 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 8294 transitions. Word has length 50 [2023-12-02 12:56:30,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:56:30,367 INFO L495 AbstractCegarLoop]: Abstraction has 5652 states and 8294 transitions. [2023-12-02 12:56:30,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 12:56:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 8294 transitions. [2023-12-02 12:56:30,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 12:56:30,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:56:30,369 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2023-12-02 12:56:30,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 12:56:30,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 12:56:30,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:56:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash -818663376, now seen corresponding path program 1 times [2023-12-02 12:56:30,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:56:30,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171747982] [2023-12-02 12:56:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:56:30,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:57:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:57:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-02 12:57:02,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:57:02,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171747982] [2023-12-02 12:57:02,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171747982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:57:02,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:57:02,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:57:02,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118981507] [2023-12-02 12:57:02,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:57:02,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:57:02,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:57:02,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:57:02,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:57:02,308 INFO L87 Difference]: Start difference. First operand 5652 states and 8294 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 12:57:04,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:57:06,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:57:08,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:57:19,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:57:19,806 INFO L93 Difference]: Finished difference Result 5662 states and 8303 transitions. [2023-12-02 12:57:19,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:57:19,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 56 [2023-12-02 12:57:19,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:57:19,852 INFO L225 Difference]: With dead ends: 5662 [2023-12-02 12:57:19,852 INFO L226 Difference]: Without dead ends: 5660 [2023-12-02 12:57:19,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:57:19,858 INFO L413 NwaCegarLoop]: 3946 mSDtfsCounter, 4447 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 11811 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:57:19,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4461 Valid, 11811 Invalid, 1618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1614 Invalid, 3 Unknown, 0 Unchecked, 17.0s Time] [2023-12-02 12:57:19,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5660 states. [2023-12-02 12:57:20,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5660 to 5660. [2023-12-02 12:57:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5660 states, 3232 states have (on average 1.2568069306930694) internal successors, (4062), 3383 states have internal predecessors, (4062), 2080 states have call successors, (2080), 354 states have call predecessors, (2080), 345 states have return successors, (2158), 2026 states have call predecessors, (2158), 2074 states have call successors, (2158) [2023-12-02 12:57:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5660 states to 5660 states and 8300 transitions. [2023-12-02 12:57:20,347 INFO L78 Accepts]: Start accepts. Automaton has 5660 states and 8300 transitions. Word has length 56 [2023-12-02 12:57:20,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:57:20,348 INFO L495 AbstractCegarLoop]: Abstraction has 5660 states and 8300 transitions. [2023-12-02 12:57:20,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 12:57:20,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5660 states and 8300 transitions. [2023-12-02 12:57:20,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 12:57:20,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:57:20,351 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 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] [2023-12-02 12:57:20,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 12:57:20,351 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 12:57:20,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:57:20,352 INFO L85 PathProgramCache]: Analyzing trace with hash 733313195, now seen corresponding path program 1 times [2023-12-02 12:57:20,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:57:20,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069684579] [2023-12-02 12:57:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:57:20,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:57:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:57:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-02 12:57:52,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:57:52,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069684579] [2023-12-02 12:57:52,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069684579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:57:52,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:57:52,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:57:52,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74373783] [2023-12-02 12:57:52,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:57:52,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:57:52,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:57:52,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:57:52,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:57:52,198 INFO L87 Difference]: Start difference. First operand 5660 states and 8300 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 12:57:54,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:57:56,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:57:58,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:58:10,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:58:10,899 INFO L93 Difference]: Finished difference Result 5670 states and 8309 transitions. [2023-12-02 12:58:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:58:10,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2023-12-02 12:58:10,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:58:10,926 INFO L225 Difference]: With dead ends: 5670 [2023-12-02 12:58:10,926 INFO L226 Difference]: Without dead ends: 5668 [2023-12-02 12:58:10,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:58:10,931 INFO L413 NwaCegarLoop]: 3946 mSDtfsCounter, 4448 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 11811 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:58:10,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4461 Valid, 11811 Invalid, 1618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1614 Invalid, 3 Unknown, 0 Unchecked, 18.1s Time] [2023-12-02 12:58:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5668 states. [2023-12-02 12:58:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5668 to 5668. [2023-12-02 12:58:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 3238 states have (on average 1.25633106856084) internal successors, (4068), 3389 states have internal predecessors, (4068), 2080 states have call successors, (2080), 356 states have call predecessors, (2080), 347 states have return successors, (2158), 2026 states have call predecessors, (2158), 2074 states have call successors, (2158) [2023-12-02 12:58:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 8306 transitions. [2023-12-02 12:58:11,327 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 8306 transitions. Word has length 60 [2023-12-02 12:58:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:58:11,328 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 8306 transitions. [2023-12-02 12:58:11,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 12:58:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 8306 transitions. [2023-12-02 12:58:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 12:58:11,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:58:11,330 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 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] [2023-12-02 12:58:11,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 12:58:11,330 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 12:58:11,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:58:11,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1824534334, now seen corresponding path program 1 times [2023-12-02 12:58:11,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:58:11,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911139034] [2023-12-02 12:58:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:58:11,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:58:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:58:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 12:58:41,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:58:41,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911139034] [2023-12-02 12:58:41,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911139034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:58:41,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:58:41,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:58:41,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093705406] [2023-12-02 12:58:41,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:58:41,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:58:41,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:58:41,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:58:41,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:58:41,668 INFO L87 Difference]: Start difference. First operand 5668 states and 8306 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 12:58:43,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:58:46,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:58:48,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:59:00,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:00,014 INFO L93 Difference]: Finished difference Result 5678 states and 8315 transitions. [2023-12-02 12:59:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:59:00,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 65 [2023-12-02 12:59:00,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:00,034 INFO L225 Difference]: With dead ends: 5678 [2023-12-02 12:59:00,034 INFO L226 Difference]: Without dead ends: 5676 [2023-12-02 12:59:00,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:59:00,037 INFO L413 NwaCegarLoop]: 3946 mSDtfsCounter, 4448 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4460 SdHoareTripleChecker+Valid, 11811 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:00,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4460 Valid, 11811 Invalid, 1618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1614 Invalid, 3 Unknown, 0 Unchecked, 17.7s Time] [2023-12-02 12:59:00,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2023-12-02 12:59:00,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5676. [2023-12-02 12:59:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 3244 states have (on average 1.2558569667077681) internal successors, (4074), 3395 states have internal predecessors, (4074), 2080 states have call successors, (2080), 358 states have call predecessors, (2080), 349 states have return successors, (2158), 2026 states have call predecessors, (2158), 2074 states have call successors, (2158) [2023-12-02 12:59:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 8312 transitions. [2023-12-02 12:59:00,439 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 8312 transitions. Word has length 65 [2023-12-02 12:59:00,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:00,440 INFO L495 AbstractCegarLoop]: Abstraction has 5676 states and 8312 transitions. [2023-12-02 12:59:00,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 12:59:00,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 8312 transitions. [2023-12-02 12:59:00,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 12:59:00,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:00,442 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 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] [2023-12-02 12:59:00,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 12:59:00,442 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 12:59:00,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:00,443 INFO L85 PathProgramCache]: Analyzing trace with hash -823348149, now seen corresponding path program 1 times [2023-12-02 12:59:00,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:59:00,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568507388] [2023-12-02 12:59:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:00,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:59:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:59:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-02 12:59:33,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:59:33,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568507388] [2023-12-02 12:59:33,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568507388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:59:33,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:59:33,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:59:33,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598831791] [2023-12-02 12:59:33,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:59:33,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:59:33,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:59:33,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:59:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:59:33,174 INFO L87 Difference]: Start difference. First operand 5676 states and 8312 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 12:59:35,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:59:37,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:59:39,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 12:59:58,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:59:58,462 INFO L93 Difference]: Finished difference Result 7981 states and 11562 transitions. [2023-12-02 12:59:58,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:59:58,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2023-12-02 12:59:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:59:58,496 INFO L225 Difference]: With dead ends: 7981 [2023-12-02 12:59:58,496 INFO L226 Difference]: Without dead ends: 7979 [2023-12-02 12:59:58,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:59:58,502 INFO L413 NwaCegarLoop]: 5273 mSDtfsCounter, 3251 mSDsluCounter, 12992 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3262 SdHoareTripleChecker+Valid, 18265 SdHoareTripleChecker+Invalid, 2451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:59:58,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3262 Valid, 18265 Invalid, 2451 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2446 Invalid, 3 Unknown, 0 Unchecked, 24.4s Time] [2023-12-02 12:59:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7979 states. [2023-12-02 12:59:59,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7979 to 7971. [2023-12-02 12:59:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7971 states, 4557 states have (on average 1.248409041035769) internal successors, (5689), 4745 states have internal predecessors, (5689), 2861 states have call successors, (2861), 567 states have call predecessors, (2861), 550 states have return successors, (3003), 2793 states have call predecessors, (3003), 2855 states have call successors, (3003) [2023-12-02 12:59:59,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7971 states to 7971 states and 11553 transitions. [2023-12-02 12:59:59,113 INFO L78 Accepts]: Start accepts. Automaton has 7971 states and 11553 transitions. Word has length 70 [2023-12-02 12:59:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:59:59,114 INFO L495 AbstractCegarLoop]: Abstraction has 7971 states and 11553 transitions. [2023-12-02 12:59:59,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 12:59:59,114 INFO L276 IsEmpty]: Start isEmpty. Operand 7971 states and 11553 transitions. [2023-12-02 12:59:59,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 12:59:59,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:59:59,116 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 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] [2023-12-02 12:59:59,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 12:59:59,116 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 12:59:59,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:59:59,117 INFO L85 PathProgramCache]: Analyzing trace with hash -399987984, now seen corresponding path program 1 times [2023-12-02 12:59:59,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:59:59,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254457076] [2023-12-02 12:59:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:59:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-02 13:00:32,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:32,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254457076] [2023-12-02 13:00:32,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254457076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:32,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:32,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:00:32,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407665359] [2023-12-02 13:00:32,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:32,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:00:32,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:32,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:00:32,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:00:32,024 INFO L87 Difference]: Start difference. First operand 7971 states and 11553 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 13:00:34,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:00:36,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:00:38,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:00:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:50,148 INFO L93 Difference]: Finished difference Result 7981 states and 11562 transitions. [2023-12-02 13:00:50,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:00:50,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2023-12-02 13:00:50,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:50,169 INFO L225 Difference]: With dead ends: 7981 [2023-12-02 13:00:50,169 INFO L226 Difference]: Without dead ends: 7979 [2023-12-02 13:00:50,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:00:50,172 INFO L413 NwaCegarLoop]: 3946 mSDtfsCounter, 4447 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 11811 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:50,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4457 Valid, 11811 Invalid, 1618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1614 Invalid, 3 Unknown, 0 Unchecked, 17.3s Time] [2023-12-02 13:00:50,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7979 states. [2023-12-02 13:00:50,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7979 to 7979. [2023-12-02 13:00:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7979 states, 4563 states have (on average 1.2480824019285557) internal successors, (5695), 4751 states have internal predecessors, (5695), 2861 states have call successors, (2861), 569 states have call predecessors, (2861), 552 states have return successors, (3003), 2793 states have call predecessors, (3003), 2855 states have call successors, (3003) [2023-12-02 13:00:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7979 states to 7979 states and 11559 transitions. [2023-12-02 13:00:50,714 INFO L78 Accepts]: Start accepts. Automaton has 7979 states and 11559 transitions. Word has length 76 [2023-12-02 13:00:50,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:50,715 INFO L495 AbstractCegarLoop]: Abstraction has 7979 states and 11559 transitions. [2023-12-02 13:00:50,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 13:00:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 7979 states and 11559 transitions. [2023-12-02 13:00:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 13:00:50,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:50,716 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 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] [2023-12-02 13:00:50,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 13:00:50,717 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 13:00:50,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:50,717 INFO L85 PathProgramCache]: Analyzing trace with hash -550933, now seen corresponding path program 1 times [2023-12-02 13:00:50,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:50,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315398383] [2023-12-02 13:00:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:50,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-12-02 13:01:22,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:22,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315398383] [2023-12-02 13:01:22,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315398383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:22,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:22,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:01:22,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377897058] [2023-12-02 13:01:22,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:22,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:01:22,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:22,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:01:22,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:01:22,041 INFO L87 Difference]: Start difference. First operand 7979 states and 11559 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 13:01:24,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:26,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:28,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:01:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:40,939 INFO L93 Difference]: Finished difference Result 7989 states and 11568 transitions. [2023-12-02 13:01:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:01:40,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2023-12-02 13:01:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:40,970 INFO L225 Difference]: With dead ends: 7989 [2023-12-02 13:01:40,970 INFO L226 Difference]: Without dead ends: 7987 [2023-12-02 13:01:40,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:01:40,975 INFO L413 NwaCegarLoop]: 3946 mSDtfsCounter, 4448 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 11811 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:40,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4457 Valid, 11811 Invalid, 1618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1614 Invalid, 3 Unknown, 0 Unchecked, 18.0s Time] [2023-12-02 13:01:40,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7987 states. [2023-12-02 13:01:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7987 to 7987. [2023-12-02 13:01:41,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7987 states, 4569 states have (on average 1.2477566207047495) internal successors, (5701), 4757 states have internal predecessors, (5701), 2861 states have call successors, (2861), 571 states have call predecessors, (2861), 554 states have return successors, (3003), 2793 states have call predecessors, (3003), 2855 states have call successors, (3003) [2023-12-02 13:01:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7987 states to 7987 states and 11565 transitions. [2023-12-02 13:01:41,627 INFO L78 Accepts]: Start accepts. Automaton has 7987 states and 11565 transitions. Word has length 80 [2023-12-02 13:01:41,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:41,628 INFO L495 AbstractCegarLoop]: Abstraction has 7987 states and 11565 transitions. [2023-12-02 13:01:41,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 13:01:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 7987 states and 11565 transitions. [2023-12-02 13:01:41,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 13:01:41,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:41,629 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 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] [2023-12-02 13:01:41,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 13:01:41,629 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 13:01:41,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:41,630 INFO L85 PathProgramCache]: Analyzing trace with hash -673702832, now seen corresponding path program 1 times [2023-12-02 13:01:41,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:41,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652624429] [2023-12-02 13:01:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:41,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-12-02 13:02:12,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:02:12,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652624429] [2023-12-02 13:02:12,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652624429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:02:12,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:02:12,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:02:12,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638383685] [2023-12-02 13:02:12,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:02:12,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:02:12,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:12,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:02:12,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:02:12,622 INFO L87 Difference]: Start difference. First operand 7987 states and 11565 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 13:02:14,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:16,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:19,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:31,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:31,079 INFO L93 Difference]: Finished difference Result 7997 states and 11574 transitions. [2023-12-02 13:02:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:02:31,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 86 [2023-12-02 13:02:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:31,103 INFO L225 Difference]: With dead ends: 7997 [2023-12-02 13:02:31,103 INFO L226 Difference]: Without dead ends: 7995 [2023-12-02 13:02:31,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:02:31,108 INFO L413 NwaCegarLoop]: 3946 mSDtfsCounter, 4447 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4455 SdHoareTripleChecker+Valid, 11811 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:31,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4455 Valid, 11811 Invalid, 1618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1614 Invalid, 3 Unknown, 0 Unchecked, 17.6s Time] [2023-12-02 13:02:31,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7995 states. [2023-12-02 13:02:31,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7995 to 7995. [2023-12-02 13:02:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7995 states, 4575 states have (on average 1.247431693989071) internal successors, (5707), 4763 states have internal predecessors, (5707), 2861 states have call successors, (2861), 573 states have call predecessors, (2861), 556 states have return successors, (3003), 2793 states have call predecessors, (3003), 2855 states have call successors, (3003) [2023-12-02 13:02:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7995 states to 7995 states and 11571 transitions. [2023-12-02 13:02:31,850 INFO L78 Accepts]: Start accepts. Automaton has 7995 states and 11571 transitions. Word has length 86 [2023-12-02 13:02:31,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:31,851 INFO L495 AbstractCegarLoop]: Abstraction has 7995 states and 11571 transitions. [2023-12-02 13:02:31,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 13:02:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand 7995 states and 11571 transitions. [2023-12-02 13:02:31,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-02 13:02:31,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:31,853 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 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] [2023-12-02 13:02:31,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 13:02:31,853 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 13:02:31,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:31,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1173127545, now seen corresponding path program 1 times [2023-12-02 13:02:31,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:31,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621127177] [2023-12-02 13:02:31,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:31,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:03:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:03:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-02 13:03:03,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:03:03,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621127177] [2023-12-02 13:03:03,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621127177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:03:03,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:03:03,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:03:03,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877046269] [2023-12-02 13:03:03,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:03:03,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:03:03,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:03:03,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:03:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:03:03,226 INFO L87 Difference]: Start difference. First operand 7995 states and 11571 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 13:03:05,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:07,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:09,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:21,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:03:21,559 INFO L93 Difference]: Finished difference Result 8005 states and 11580 transitions. [2023-12-02 13:03:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:03:21,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 91 [2023-12-02 13:03:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:03:21,582 INFO L225 Difference]: With dead ends: 8005 [2023-12-02 13:03:21,582 INFO L226 Difference]: Without dead ends: 8003 [2023-12-02 13:03:21,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:03:21,587 INFO L413 NwaCegarLoop]: 3946 mSDtfsCounter, 4447 mSDsluCounter, 7865 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4454 SdHoareTripleChecker+Valid, 11811 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:03:21,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4454 Valid, 11811 Invalid, 1618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1614 Invalid, 3 Unknown, 0 Unchecked, 17.4s Time] [2023-12-02 13:03:21,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8003 states. [2023-12-02 13:03:22,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8003 to 8003. [2023-12-02 13:03:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8003 states, 4581 states have (on average 1.247107618423925) internal successors, (5713), 4769 states have internal predecessors, (5713), 2861 states have call successors, (2861), 575 states have call predecessors, (2861), 558 states have return successors, (3003), 2793 states have call predecessors, (3003), 2855 states have call successors, (3003) [2023-12-02 13:03:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8003 states to 8003 states and 11577 transitions. [2023-12-02 13:03:22,273 INFO L78 Accepts]: Start accepts. Automaton has 8003 states and 11577 transitions. Word has length 91 [2023-12-02 13:03:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:03:22,273 INFO L495 AbstractCegarLoop]: Abstraction has 8003 states and 11577 transitions. [2023-12-02 13:03:22,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 13:03:22,273 INFO L276 IsEmpty]: Start isEmpty. Operand 8003 states and 11577 transitions. [2023-12-02 13:03:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 13:03:22,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:03:22,275 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 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] [2023-12-02 13:03:22,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 13:03:22,276 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 13:03:22,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:03:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash 60284638, now seen corresponding path program 1 times [2023-12-02 13:03:22,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:03:22,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800731811] [2023-12-02 13:03:22,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:22,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:03:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:03:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-02 13:03:53,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:03:53,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800731811] [2023-12-02 13:03:53,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800731811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:03:53,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:03:53,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:03:53,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380743246] [2023-12-02 13:03:53,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:03:53,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:03:53,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:03:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:03:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:03:53,315 INFO L87 Difference]: Start difference. First operand 8003 states and 11577 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 13:03:55,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:57,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:59,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:11,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:11,132 INFO L93 Difference]: Finished difference Result 8133 states and 11695 transitions. [2023-12-02 13:04:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:04:11,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2023-12-02 13:04:11,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:11,155 INFO L225 Difference]: With dead ends: 8133 [2023-12-02 13:04:11,155 INFO L226 Difference]: Without dead ends: 8131 [2023-12-02 13:04:11,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:04:11,159 INFO L413 NwaCegarLoop]: 3966 mSDtfsCounter, 4412 mSDsluCounter, 7961 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 11927 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:11,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4418 Valid, 11927 Invalid, 1641 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1636 Invalid, 3 Unknown, 0 Unchecked, 16.9s Time] [2023-12-02 13:04:11,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8131 states. [2023-12-02 13:04:11,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8131 to 8129. [2023-12-02 13:04:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8129 states, 4657 states have (on average 1.2452222460811682) internal successors, (5799), 4847 states have internal predecessors, (5799), 2875 states have call successors, (2875), 611 states have call predecessors, (2875), 594 states have return successors, (3017), 2807 states have call predecessors, (3017), 2869 states have call successors, (3017) [2023-12-02 13:04:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 11691 transitions. [2023-12-02 13:04:11,845 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 11691 transitions. Word has length 95 [2023-12-02 13:04:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:11,845 INFO L495 AbstractCegarLoop]: Abstraction has 8129 states and 11691 transitions. [2023-12-02 13:04:11,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 13:04:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 11691 transitions. [2023-12-02 13:04:11,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-02 13:04:11,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:11,847 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 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] [2023-12-02 13:04:11,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 13:04:11,847 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 13:04:11,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:11,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1740613845, now seen corresponding path program 1 times [2023-12-02 13:04:11,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:11,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635508838] [2023-12-02 13:04:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:11,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2023-12-02 13:04:42,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:04:42,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635508838] [2023-12-02 13:04:42,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635508838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:04:42,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:04:42,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:04:42,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601292470] [2023-12-02 13:04:42,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:04:42,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:04:42,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:04:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:04:42,087 INFO L87 Difference]: Start difference. First operand 8129 states and 11691 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 13:04:44,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:46,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:04:48,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:01,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:01,743 INFO L93 Difference]: Finished difference Result 8213 states and 11747 transitions. [2023-12-02 13:05:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:05:01,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 100 [2023-12-02 13:05:01,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:01,766 INFO L225 Difference]: With dead ends: 8213 [2023-12-02 13:05:01,766 INFO L226 Difference]: Without dead ends: 8211 [2023-12-02 13:05:01,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:05:01,771 INFO L413 NwaCegarLoop]: 3944 mSDtfsCounter, 4388 mSDsluCounter, 7940 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4393 SdHoareTripleChecker+Valid, 11884 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:01,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4393 Valid, 11884 Invalid, 1650 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1645 Invalid, 3 Unknown, 0 Unchecked, 18.6s Time] [2023-12-02 13:05:01,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8211 states. [2023-12-02 13:05:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8211 to 8209. [2023-12-02 13:05:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8209 states, 4705 states have (on average 1.2435706695005313) internal successors, (5851), 4895 states have internal predecessors, (5851), 2875 states have call successors, (2875), 643 states have call predecessors, (2875), 626 states have return successors, (3017), 2807 states have call predecessors, (3017), 2869 states have call successors, (3017) [2023-12-02 13:05:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8209 states to 8209 states and 11743 transitions. [2023-12-02 13:05:02,523 INFO L78 Accepts]: Start accepts. Automaton has 8209 states and 11743 transitions. Word has length 100 [2023-12-02 13:05:02,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:02,524 INFO L495 AbstractCegarLoop]: Abstraction has 8209 states and 11743 transitions. [2023-12-02 13:05:02,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-02 13:05:02,524 INFO L276 IsEmpty]: Start isEmpty. Operand 8209 states and 11743 transitions. [2023-12-02 13:05:02,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-02 13:05:02,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:02,527 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:05:02,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 13:05:02,528 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 13:05:02,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1096882909, now seen corresponding path program 1 times [2023-12-02 13:05:02,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:02,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618115930] [2023-12-02 13:05:02,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:02,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-02 13:05:32,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618115930] [2023-12-02 13:05:32,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618115930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:32,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:32,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:05:32,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137520007] [2023-12-02 13:05:32,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:32,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:05:32,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:32,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:05:32,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:05:32,883 INFO L87 Difference]: Start difference. First operand 8209 states and 11743 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 13:05:35,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:37,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:46,372 INFO L93 Difference]: Finished difference Result 16402 states and 23461 transitions. [2023-12-02 13:05:46,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:05:46,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 120 [2023-12-02 13:05:46,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:46,407 INFO L225 Difference]: With dead ends: 16402 [2023-12-02 13:05:46,407 INFO L226 Difference]: Without dead ends: 8209 [2023-12-02 13:05:46,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:05:46,462 INFO L413 NwaCegarLoop]: 3944 mSDtfsCounter, 454 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 7323 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:46,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 7323 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 940 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2023-12-02 13:05:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8209 states. [2023-12-02 13:05:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8209 to 8209. [2023-12-02 13:05:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8209 states, 4705 states have (on average 1.2431455897980872) internal successors, (5849), 4895 states have internal predecessors, (5849), 2875 states have call successors, (2875), 643 states have call predecessors, (2875), 626 states have return successors, (3017), 2807 states have call predecessors, (3017), 2869 states have call successors, (3017) [2023-12-02 13:05:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8209 states to 8209 states and 11741 transitions. [2023-12-02 13:05:47,372 INFO L78 Accepts]: Start accepts. Automaton has 8209 states and 11741 transitions. Word has length 120 [2023-12-02 13:05:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:47,372 INFO L495 AbstractCegarLoop]: Abstraction has 8209 states and 11741 transitions. [2023-12-02 13:05:47,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 13:05:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 8209 states and 11741 transitions. [2023-12-02 13:05:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-02 13:05:47,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:47,375 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 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] [2023-12-02 13:05:47,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 13:05:47,376 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 13:05:47,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1974245616, now seen corresponding path program 1 times [2023-12-02 13:05:47,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:47,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577162810] [2023-12-02 13:05:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:47,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:06:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-12-02 13:06:20,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:06:20,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577162810] [2023-12-02 13:06:20,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577162810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:06:20,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:06:20,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:06:20,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564912986] [2023-12-02 13:06:20,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:06:20,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:06:20,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:06:20,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:06:20,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:06:20,947 INFO L87 Difference]: Start difference. First operand 8209 states and 11741 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-02 13:06:23,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:06:25,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []