./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.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_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/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_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/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_cf17fddf-945b-4ddd-a378-e889cf562cfb/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 97cecdf2f398250e9c44f19d8d35ed7fcac528daa12758af85552fae0658b596 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:09:16,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:09:16,152 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 14:09:16,158 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:09:16,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:09:16,188 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:09:16,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:09:16,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:09:16,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:09:16,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:09:16,192 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:09:16,192 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:09:16,193 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:09:16,193 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:09:16,194 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:09:16,194 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:09:16,195 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:09:16,195 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:09:16,196 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:09:16,197 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:09:16,197 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:09:16,198 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:09:16,199 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:09:16,199 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:09:16,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:09:16,200 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:09:16,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:09:16,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:09:16,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:09:16,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:09:16,203 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:09:16,203 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:09:16,204 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:09:16,204 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:09:16,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:09:16,205 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:09:16,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:09:16,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:09:16,206 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:09:16,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:09:16,207 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:09:16,208 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:09:16,208 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:09:16,208 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:09:16,208 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_cf17fddf-945b-4ddd-a378-e889cf562cfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97cecdf2f398250e9c44f19d8d35ed7fcac528daa12758af85552fae0658b596 [2023-12-02 14:09:16,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:09:16,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:09:16,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:09:16,527 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:09:16,528 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:09:16,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i [2023-12-02 14:09:19,939 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:09:20,528 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:09:20,529 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i [2023-12-02 14:09:20,578 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/data/3c1d58e9e/33e54e4e4d5b4f1d931c9194a475911d/FLAG2d9e8ddd9 [2023-12-02 14:09:20,595 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/data/3c1d58e9e/33e54e4e4d5b4f1d931c9194a475911d [2023-12-02 14:09:20,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:09:20,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:09:20,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:09:20,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:09:20,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:09:20,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:09:20" (1/1) ... [2023-12-02 14:09:20,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19eaa339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:20, skipping insertion in model container [2023-12-02 14:09:20,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:09:20" (1/1) ... [2023-12-02 14:09:20,760 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:09:25,404 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_cf17fddf-945b-4ddd-a378-e889cf562cfb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[428896,428909] [2023-12-02 14:09:25,410 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_cf17fddf-945b-4ddd-a378-e889cf562cfb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[429065,429078] [2023-12-02 14:09:25,411 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_cf17fddf-945b-4ddd-a378-e889cf562cfb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[429232,429245] [2023-12-02 14:09:25,412 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_cf17fddf-945b-4ddd-a378-e889cf562cfb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[429400,429413] [2023-12-02 14:09:25,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:09:25,510 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:09:25,687 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"); [5779] [2023-12-02 14:09:25,689 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5786] [2023-12-02 14:09:25,690 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)); [5793] [2023-12-02 14:09:25,690 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5800] [2023-12-02 14:09:25,691 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [5815-5816] [2023-12-02 14:09:25,694 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [5857] [2023-12-02 14:09:25,695 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [5860] [2023-12-02 14:09:25,695 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [5863] [2023-12-02 14:09:25,695 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [5866] [2023-12-02 14:09:25,696 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)); [5895] [2023-12-02 14:09:25,697 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5902] [2023-12-02 14:09:25,699 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (__preempt_count)); [5961] [2023-12-02 14:09:25,700 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (__preempt_count)); [5964] [2023-12-02 14:09:25,700 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%P0": "+m" (__preempt_count): "qi" (val)); [5966] [2023-12-02 14:09:25,701 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (__preempt_count)); [5971] [2023-12-02 14:09:25,701 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (__preempt_count)); [5974] [2023-12-02 14:09:25,701 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%P0": "+m" (__preempt_count): "ri" (val)); [5976] [2023-12-02 14:09:25,702 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (__preempt_count)); [5981] [2023-12-02 14:09:25,702 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (__preempt_count)); [5984] [2023-12-02 14:09:25,703 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%P0": "+m" (__preempt_count): "ri" (val)); [5986] [2023-12-02 14:09:25,703 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (__preempt_count)); [5991] [2023-12-02 14:09:25,704 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (__preempt_count)); [5994] [2023-12-02 14:09:25,704 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%P0": "+m" (__preempt_count): "re" (val)); [5996] [2023-12-02 14:09:25,705 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (__preempt_count)); [6034] [2023-12-02 14:09:25,706 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (__preempt_count)); [6037] [2023-12-02 14:09:25,706 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addb %1, %%gs:%P0": "+m" (__preempt_count): "qi" (- val)); [6039] [2023-12-02 14:09:25,706 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (__preempt_count)); [6044] [2023-12-02 14:09:25,707 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (__preempt_count)); [6047] [2023-12-02 14:09:25,707 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addw %1, %%gs:%P0": "+m" (__preempt_count): "ri" (- val)); [6049] [2023-12-02 14:09:25,708 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (__preempt_count)); [6054] [2023-12-02 14:09:25,708 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (__preempt_count)); [6057] [2023-12-02 14:09:25,708 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addl %1, %%gs:%P0": "+m" (__preempt_count): "ri" (- val)); [6059] [2023-12-02 14:09:25,709 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (__preempt_count)); [6064] [2023-12-02 14:09:25,709 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (__preempt_count)); [6067] [2023-12-02 14:09:25,710 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("addq %1, %%gs:%P0": "+m" (__preempt_count): "re" (- val)); [6069] [2023-12-02 14:09:25,712 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6138] [2023-12-02 14:09:25,713 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6147] [2023-12-02 14:09:25,722 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6407] [2023-12-02 14:09:25,749 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/skbuff.h"), "i" (1891), "i" (12UL)); [6717-6718] [2023-12-02 14:09:25,760 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "m" (cpu_number)); [6973] [2023-12-02 14:09:25,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "m" (cpu_number)); [6976] [2023-12-02 14:09:25,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "m" (cpu_number)); [6979] [2023-12-02 14:09:25,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "m" (cpu_number)); [6982] [2023-12-02 14:09:25,762 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret_____0): "m" (cpu_number)); [7013] [2023-12-02 14:09:25,763 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret_____0): "m" (cpu_number)); [7016] [2023-12-02 14:09:25,763 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret_____0): "m" (cpu_number)); [7019] [2023-12-02 14:09:25,763 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret_____0): "m" (cpu_number)); [7022] [2023-12-02 14:09:25,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret_____1): "m" (cpu_number)); [7053] [2023-12-02 14:09:25,766 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret_____1): "m" (cpu_number)); [7056] [2023-12-02 14:09:25,766 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret_____1): "m" (cpu_number)); [7059] [2023-12-02 14:09:25,766 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret_____1): "m" (cpu_number)); [7062] [2023-12-02 14:09:25,767 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret_____2): "m" (cpu_number)); [7093] [2023-12-02 14:09:25,768 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret_____2): "m" (cpu_number)); [7096] [2023-12-02 14:09:25,768 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret_____2): "m" (cpu_number)); [7099] [2023-12-02 14:09:25,768 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret_____2): "m" (cpu_number)); [7102] [2023-12-02 14:09:25,777 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7394] [2023-12-02 14:09:25,778 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7397] [2023-12-02 14:09:25,778 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7400] [2023-12-02 14:09:25,778 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7403] [2023-12-02 14:09:25,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7434] [2023-12-02 14:09:25,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7437] [2023-12-02 14:09:25,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7440] [2023-12-02 14:09:25,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7443] [2023-12-02 14:09:25,781 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7474] [2023-12-02 14:09:25,781 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7477] [2023-12-02 14:09:25,781 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7480] [2023-12-02 14:09:25,782 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7483] [2023-12-02 14:09:25,782 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7514] [2023-12-02 14:09:25,783 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7517] [2023-12-02 14:09:25,783 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7520] [2023-12-02 14:09:25,783 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7523] [2023-12-02 14:09:25,785 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7592] [2023-12-02 14:09:25,785 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7595] [2023-12-02 14:09:25,785 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7598] [2023-12-02 14:09:25,786 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7601] [2023-12-02 14:09:25,786 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7632] [2023-12-02 14:09:25,787 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7635] [2023-12-02 14:09:25,787 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7638] [2023-12-02 14:09:25,787 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7641] [2023-12-02 14:09:25,788 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7672] [2023-12-02 14:09:25,788 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7675] [2023-12-02 14:09:25,789 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7678] [2023-12-02 14:09:25,789 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7681] [2023-12-02 14:09:25,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7712] [2023-12-02 14:09:25,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7715] [2023-12-02 14:09:25,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7718] [2023-12-02 14:09:25,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("incq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [7721] [2023-12-02 14:09:25,852 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/tun.c"), "i" (446), "i" (12UL)); [8628-8629] [2023-12-02 14:09:25,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [8635] [2023-12-02 14:09:25,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [8657] [2023-12-02 14:09:25,868 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/tun.c"), "i" (480), "i" (12UL)); [8699-8700] [2023-12-02 14:09:25,870 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/tun.c"), "i" (500), "i" (12UL)); [8778-8779] [2023-12-02 14:09:25,871 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [8786] [2023-12-02 14:09:25,916 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [8802] [2023-12-02 14:09:25,928 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/tun.c"), "i" (509), "i" (12UL)); [8817-8818] [2023-12-02 14:09:25,931 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/tun.c"), "i" (523), "i" (12UL)); [8880-8881] [2023-12-02 14:09:25,945 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [8954] [2023-12-02 14:09:25,956 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [8956] [2023-12-02 14:09:25,972 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9106] [2023-12-02 14:09:25,974 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9154] [2023-12-02 14:09:25,979 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/tun.c"), "i" (770), "i" (12UL)); [9320-9321] [2023-12-02 14:09:26,046 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/tun.c"), "i" (1408), "i" (12UL)); [10377-10378] [2023-12-02 14:09:26,135 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" ((unsigned int *)argp): "ebx"); [11274] [2023-12-02 14:09:26,135 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" ((unsigned int *)argp): "ebx"); [11277] [2023-12-02 14:09:26,135 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" ((unsigned int *)argp): "ebx"); [11280] [2023-12-02 14:09:26,136 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" ((unsigned int *)argp): "ebx"); [11283] [2023-12-02 14:09:26,136 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" ((unsigned int *)argp): "ebx"); [11286] [2023-12-02 14:09:26,152 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [11769] [2023-12-02 14:09:26,164 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [11775] [2023-12-02 14:09:26,280 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_cf17fddf-945b-4ddd-a378-e889cf562cfb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[428896,428909] [2023-12-02 14:09:26,280 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_cf17fddf-945b-4ddd-a378-e889cf562cfb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[429065,429078] [2023-12-02 14:09:26,281 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_cf17fddf-945b-4ddd-a378-e889cf562cfb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[429232,429245] [2023-12-02 14:09:26,281 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_cf17fddf-945b-4ddd-a378-e889cf562cfb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i[429400,429413] [2023-12-02 14:09:26,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:09:26,687 WARN L675 CHandler]: The function __bad_size_call_parameter is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:09:26,687 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:09:26,687 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:09:26,697 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:09:26,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26 WrapperNode [2023-12-02 14:09:26,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:09:26,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:09:26,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:09:26,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:09:26,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26" (1/1) ... [2023-12-02 14:09:26,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26" (1/1) ... [2023-12-02 14:09:27,086 INFO L138 Inliner]: procedures = 614, calls = 2637, calls flagged for inlining = 324, calls inlined = 257, statements flattened = 8056 [2023-12-02 14:09:27,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:09:27,088 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:09:27,088 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:09:27,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:09:27,100 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26" (1/1) ... [2023-12-02 14:09:27,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26" (1/1) ... [2023-12-02 14:09:27,140 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26" (1/1) ... [2023-12-02 14:09:27,140 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26" (1/1) ... [2023-12-02 14:09:27,352 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26" (1/1) ... [2023-12-02 14:09:27,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26" (1/1) ... [2023-12-02 14:09:27,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26" (1/1) ... [2023-12-02 14:09:27,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26" (1/1) ... [2023-12-02 14:09:27,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:09:27,528 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:09:27,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:09:27,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:09:27,529 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26" (1/1) ... [2023-12-02 14:09:27,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:09:27,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:09:27,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:09:27,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:09:27,609 INFO L130 BoogieDeclarations]: Found specification of procedure tun_get [2023-12-02 14:09:27,609 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_get [2023-12-02 14:09:27,609 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-12-02 14:09:27,609 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-12-02 14:09:27,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 14:09:27,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 14:09:27,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 14:09:27,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 14:09:27,610 INFO L130 BoogieDeclarations]: Found specification of procedure skb_get_hash [2023-12-02 14:09:27,610 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_get_hash [2023-12-02 14:09:27,610 INFO L130 BoogieDeclarations]: Found specification of procedure tun_attach [2023-12-02 14:09:27,610 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_attach [2023-12-02 14:09:27,610 INFO L130 BoogieDeclarations]: Found specification of procedure ns_capable [2023-12-02 14:09:27,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_capable [2023-12-02 14:09:27,610 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2023-12-02 14:09:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2023-12-02 14:09:27,611 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 14:09:27,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 14:09:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 14:09:27,611 INFO L130 BoogieDeclarations]: Found specification of procedure gid_valid [2023-12-02 14:09:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_valid [2023-12-02 14:09:27,611 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2023-12-02 14:09:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2023-12-02 14:09:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-12-02 14:09:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-12-02 14:09:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 14:09:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 14:09:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:09:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure sock_writeable [2023-12-02 14:09:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_writeable [2023-12-02 14:09:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-12-02 14:09:27,613 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-12-02 14:09:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2023-12-02 14:09:27,613 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2023-12-02 14:09:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 14:09:27,613 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 14:09:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure sock_put [2023-12-02 14:09:27,613 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_put [2023-12-02 14:09:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 14:09:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-12-02 14:09:27,614 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-12-02 14:09:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure tun_get_iff [2023-12-02 14:09:27,614 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_get_iff [2023-12-02 14:09:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 14:09:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_76 [2023-12-02 14:09:27,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_76 [2023-12-02 14:09:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 14:09:27,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 14:09:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure __tun_detach [2023-12-02 14:09:27,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __tun_detach [2023-12-02 14:09:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:09:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 14:09:27,615 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 14:09:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tun_cleanup_15_2 [2023-12-02 14:09:27,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tun_cleanup_15_2 [2023-12-02 14:09:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure tun_detach_all [2023-12-02 14:09:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_detach_all [2023-12-02 14:09:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2023-12-02 14:09:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2023-12-02 14:09:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2023-12-02 14:09:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2023-12-02 14:09:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-12-02 14:09:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-12-02 14:09:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2023-12-02 14:09:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2023-12-02 14:09:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 14:09:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 14:09:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:09:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-12-02 14:09:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-12-02 14:09:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-12-02 14:09:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-12-02 14:09:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2023-12-02 14:09:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2023-12-02 14:09:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:09:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 14:09:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 14:09:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:09:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 14:09:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure read_pnet [2023-12-02 14:09:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure read_pnet [2023-12-02 14:09:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-12-02 14:09:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-12-02 14:09:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-12-02 14:09:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-12-02 14:09:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure tun_setup [2023-12-02 14:09:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_setup [2023-12-02 14:09:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_transport_header [2023-12-02 14:09:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_transport_header [2023-12-02 14:09:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 14:09:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 14:09:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-12-02 14:09:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-12-02 14:09:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure tun_flow_find [2023-12-02 14:09:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_flow_find [2023-12-02 14:09:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure tun_flow_uninit [2023-12-02 14:09:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_flow_uninit [2023-12-02 14:09:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 14:09:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 14:09:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_net [2023-12-02 14:09:27,621 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_net [2023-12-02 14:09:27,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:09:27,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:09:27,621 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2023-12-02 14:09:27,621 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2023-12-02 14:09:27,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 14:09:27,621 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 14:09:27,621 INFO L130 BoogieDeclarations]: Found specification of procedure tun_flags [2023-12-02 14:09:27,621 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_flags [2023-12-02 14:09:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2023-12-02 14:09:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2023-12-02 14:09:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 14:09:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure uid_valid [2023-12-02 14:09:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_valid [2023-12-02 14:09:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 14:09:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 14:09:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 14:09:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 14:09:27,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 14:09:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-12-02 14:09:27,623 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-12-02 14:09:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2023-12-02 14:09:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2023-12-02 14:09:27,623 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2023-12-02 14:09:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rtnl_is_held [2023-12-02 14:09:27,623 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rtnl_is_held [2023-12-02 14:09:27,623 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-12-02 14:09:27,624 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-12-02 14:09:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2023-12-02 14:09:27,624 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2023-12-02 14:09:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 14:09:27,624 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 14:09:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure __tun_get [2023-12-02 14:09:27,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __tun_get [2023-12-02 14:09:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-12-02 14:09:27,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-12-02 14:09:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure sk_attach_filter [2023-12-02 14:09:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_attach_filter [2023-12-02 14:09:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:09:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-12-02 14:09:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-12-02 14:09:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-12-02 14:09:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-12-02 14:09:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure put_net [2023-12-02 14:09:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure put_net [2023-12-02 14:09:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:09:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_datagram_const_iovec [2023-12-02 14:09:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_datagram_const_iovec [2023-12-02 14:09:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 14:09:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-12-02 14:09:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-12-02 14:09:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 14:09:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 14:09:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure tun_get_user [2023-12-02 14:09:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_get_user [2023-12-02 14:09:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-12-02 14:09:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-12-02 14:09:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure __tun_chr_ioctl [2023-12-02 14:09:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __tun_chr_ioctl [2023-12-02 14:09:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 14:09:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 14:09:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure tun_flow_delete [2023-12-02 14:09:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_flow_delete [2023-12-02 14:09:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure sock_rps_reset_flow_hash [2023-12-02 14:09:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_rps_reset_flow_hash [2023-12-02 14:09:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 14:09:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 14:09:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure tun_queue_purge [2023-12-02 14:09:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_queue_purge [2023-12-02 14:09:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure tun_hashfn [2023-12-02 14:09:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_hashfn [2023-12-02 14:09:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-12-02 14:09:27,629 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-12-02 14:09:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 14:09:27,629 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 14:09:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 14:09:27,629 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 14:09:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2023-12-02 14:09:27,629 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2023-12-02 14:09:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_75 [2023-12-02 14:09:27,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_75 [2023-12-02 14:09:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 14:09:27,630 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 14:09:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure tun_enable_queue [2023-12-02 14:09:27,630 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_enable_queue [2023-12-02 14:09:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:09:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure security_tun_dev_free_security [2023-12-02 14:09:27,630 INFO L138 BoogieDeclarations]: Found implementation of procedure security_tun_dev_free_security [2023-12-02 14:09:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure hold_net [2023-12-02 14:09:27,631 INFO L138 BoogieDeclarations]: Found implementation of procedure hold_net [2023-12-02 14:09:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure tun_set_real_num_queues [2023-12-02 14:09:27,631 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_set_real_num_queues [2023-12-02 14:09:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 14:09:27,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 14:09:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2023-12-02 14:09:27,631 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2023-12-02 14:09:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_link_unregister [2023-12-02 14:09:27,631 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_link_unregister [2023-12-02 14:09:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure tun_do_read [2023-12-02 14:09:27,632 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_do_read [2023-12-02 14:09:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-12-02 14:09:27,632 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-12-02 14:09:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2023-12-02 14:09:27,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2023-12-02 14:09:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-12-02 14:09:27,632 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-12-02 14:09:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure is_multicast_ether_addr [2023-12-02 14:09:27,633 INFO L138 BoogieDeclarations]: Found implementation of procedure is_multicast_ether_addr [2023-12-02 14:09:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-12-02 14:09:27,633 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-12-02 14:09:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2023-12-02 14:09:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2023-12-02 14:09:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2023-12-02 14:09:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2023-12-02 14:09:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-12-02 14:09:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-12-02 14:09:27,709 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-12-02 14:09:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-12-02 14:09:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure tun_detach_filter [2023-12-02 14:09:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_detach_filter [2023-12-02 14:09:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromiovecend [2023-12-02 14:09:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromiovecend [2023-12-02 14:09:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_up [2023-12-02 14:09:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_up [2023-12-02 14:09:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 14:09:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 14:09:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2023-12-02 14:09:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2023-12-02 14:09:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure tun_put [2023-12-02 14:09:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure tun_put [2023-12-02 14:09:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:09:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 14:09:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 14:09:28,896 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:09:28,901 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:09:29,468 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 14:09:35,016 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-12-02 14:09:35,119 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:09:38,428 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:09:38,429 INFO L309 CfgBuilder]: Removed 20 assume(true) statements. [2023-12-02 14:09:38,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:09:38 BoogieIcfgContainer [2023-12-02 14:09:38,432 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:09:38,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:09:38,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:09:38,439 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:09:38,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:09:20" (1/3) ... [2023-12-02 14:09:38,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a42df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:09:38, skipping insertion in model container [2023-12-02 14:09:38,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:26" (2/3) ... [2023-12-02 14:09:38,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a42df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:09:38, skipping insertion in model container [2023-12-02 14:09:38,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:09:38" (3/3) ... [2023-12-02 14:09:38,443 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-tun.cil.i [2023-12-02 14:09:38,469 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:09:38,470 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-02 14:09:38,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:09:38,585 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;@740399a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:09:38,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 14:09:38,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 1573 states, 975 states have (on average 1.3558974358974358) internal successors, (1322), 996 states have internal predecessors, (1322), 489 states have call successors, (489), 107 states have call predecessors, (489), 106 states have return successors, (482), 481 states have call predecessors, (482), 482 states have call successors, (482) [2023-12-02 14:09:38,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-02 14:09:38,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:09:38,642 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:38,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === 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 14:09:38,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:09:38,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1248216419, now seen corresponding path program 1 times [2023-12-02 14:09:38,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:09:38,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452744138] [2023-12-02 14:09:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:09:38,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:09:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:09:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2023-12-02 14:09:39,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:09:39,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452744138] [2023-12-02 14:09:39,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452744138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:09:39,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:09:39,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:09:39,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155094830] [2023-12-02 14:09:39,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:09:39,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:09:39,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:09:39,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:09:39,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:09:39,872 INFO L87 Difference]: Start difference. First operand has 1573 states, 975 states have (on average 1.3558974358974358) internal successors, (1322), 996 states have internal predecessors, (1322), 489 states have call successors, (489), 107 states have call predecessors, (489), 106 states have return successors, (482), 481 states have call predecessors, (482), 482 states have call successors, (482) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-02 14:09:43,226 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 14:09:47,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:49,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:09:49,911 INFO L93 Difference]: Finished difference Result 4559 states and 6732 transitions. [2023-12-02 14:09:49,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:09:49,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 291 [2023-12-02 14:09:49,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:09:49,964 INFO L225 Difference]: With dead ends: 4559 [2023-12-02 14:09:49,964 INFO L226 Difference]: Without dead ends: 3025 [2023-12-02 14:09:49,980 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 14:09:49,985 INFO L413 NwaCegarLoop]: 2040 mSDtfsCounter, 2161 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:09:49,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 3926 Invalid, 777 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 774 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2023-12-02 14:09:50,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2023-12-02 14:09:50,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 2995. [2023-12-02 14:09:50,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 1876 states have (on average 1.355543710021322) internal successors, (2543), 1921 states have internal predecessors, (2543), 909 states have call successors, (909), 209 states have call predecessors, (909), 207 states have return successors, (913), 897 states have call predecessors, (913), 905 states have call successors, (913) [2023-12-02 14:09:50,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 4365 transitions. [2023-12-02 14:09:50,273 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 4365 transitions. Word has length 291 [2023-12-02 14:09:50,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:09:50,276 INFO L495 AbstractCegarLoop]: Abstraction has 2995 states and 4365 transitions. [2023-12-02 14:09:50,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-02 14:09:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 4365 transitions. [2023-12-02 14:09:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-02 14:09:50,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:09:50,287 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:50,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:09:50,287 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 14:09:50,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:09:50,288 INFO L85 PathProgramCache]: Analyzing trace with hash 139435756, now seen corresponding path program 1 times [2023-12-02 14:09:50,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:09:50,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418955058] [2023-12-02 14:09:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:09:50,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:09:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:09:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2023-12-02 14:09:50,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:09:50,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418955058] [2023-12-02 14:09:50,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418955058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:09:50,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:09:50,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:09:50,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316446118] [2023-12-02 14:09:50,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:09:50,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:09:50,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:09:50,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:09:50,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:09:50,786 INFO L87 Difference]: Start difference. First operand 2995 states and 4365 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-12-02 14:09:55,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:58,055 WARN L539 Checker$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 14:10:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:10:00,001 INFO L93 Difference]: Finished difference Result 8747 states and 12736 transitions. [2023-12-02 14:10:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:10:00,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 293 [2023-12-02 14:10:00,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:10:00,049 INFO L225 Difference]: With dead ends: 8747 [2023-12-02 14:10:00,049 INFO L226 Difference]: Without dead ends: 5807 [2023-12-02 14:10:00,064 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 14:10:00,065 INFO L413 NwaCegarLoop]: 1891 mSDtfsCounter, 2090 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 3720 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:10:00,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 3720 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 781 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2023-12-02 14:10:00,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2023-12-02 14:10:00,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5803. [2023-12-02 14:10:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5803 states, 3666 states have (on average 1.357064920894708) internal successors, (4975), 3746 states have internal predecessors, (4975), 1723 states have call successors, (1723), 414 states have call predecessors, (1723), 411 states have return successors, (1735), 1706 states have call predecessors, (1735), 1719 states have call successors, (1735) [2023-12-02 14:10:00,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 8433 transitions. [2023-12-02 14:10:00,387 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 8433 transitions. Word has length 293 [2023-12-02 14:10:00,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:10:00,388 INFO L495 AbstractCegarLoop]: Abstraction has 5803 states and 8433 transitions. [2023-12-02 14:10:00,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-12-02 14:10:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 8433 transitions. [2023-12-02 14:10:00,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-12-02 14:10:00,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:10:00,397 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:10:00,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:10:00,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 14:10:00,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:10:00,398 INFO L85 PathProgramCache]: Analyzing trace with hash 951342661, now seen corresponding path program 1 times [2023-12-02 14:10:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:10:00,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940787205] [2023-12-02 14:10:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:10:00,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:10:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:10:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2864 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2864 trivial. 0 not checked. [2023-12-02 14:10:00,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:10:00,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940787205] [2023-12-02 14:10:00,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940787205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:10:00,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:10:00,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:10:00,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760953925] [2023-12-02 14:10:00,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:10:00,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:10:00,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:10:00,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:10:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:10:00,853 INFO L87 Difference]: Start difference. First operand 5803 states and 8433 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-12-02 14:10:05,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:07,166 WARN L539 Checker$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 14:10:09,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:10:09,314 INFO L93 Difference]: Finished difference Result 11445 states and 16563 transitions. [2023-12-02 14:10:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:10:09,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 317 [2023-12-02 14:10:09,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:10:09,367 INFO L225 Difference]: With dead ends: 11445 [2023-12-02 14:10:09,367 INFO L226 Difference]: Without dead ends: 5697 [2023-12-02 14:10:09,400 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 14:10:09,401 INFO L413 NwaCegarLoop]: 1931 mSDtfsCounter, 1047 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 3765 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:10:09,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 3765 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 821 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2023-12-02 14:10:09,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5697 states. [2023-12-02 14:10:09,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5697 to 5667. [2023-12-02 14:10:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5667 states, 3606 states have (on average 1.3469217970049916) internal successors, (4857), 3681 states have internal predecessors, (4857), 1633 states have call successors, (1633), 429 states have call predecessors, (1633), 425 states have return successors, (1641), 1609 states have call predecessors, (1641), 1629 states have call successors, (1641) [2023-12-02 14:10:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5667 states to 5667 states and 8131 transitions. [2023-12-02 14:10:09,790 INFO L78 Accepts]: Start accepts. Automaton has 5667 states and 8131 transitions. Word has length 317 [2023-12-02 14:10:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:10:09,791 INFO L495 AbstractCegarLoop]: Abstraction has 5667 states and 8131 transitions. [2023-12-02 14:10:09,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2023-12-02 14:10:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5667 states and 8131 transitions. [2023-12-02 14:10:09,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-12-02 14:10:09,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:10:09,802 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:10:09,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:10:09,803 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 14:10:09,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:10:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash -925645055, now seen corresponding path program 1 times [2023-12-02 14:10:09,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:10:09,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764236498] [2023-12-02 14:10:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:10:09,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:10:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:10:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3002 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3002 trivial. 0 not checked. [2023-12-02 14:10:10,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:10:10,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764236498] [2023-12-02 14:10:10,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764236498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:10:10,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:10:10,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:10:10,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284562896] [2023-12-02 14:10:10,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:10:10,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:10:10,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:10:10,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:10:10,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:10:10,784 INFO L87 Difference]: Start difference. First operand 5667 states and 8131 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-12-02 14:10:15,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:17,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:18,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:10:18,675 INFO L93 Difference]: Finished difference Result 5673 states and 8136 transitions. [2023-12-02 14:10:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:10:18,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 341 [2023-12-02 14:10:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:10:18,717 INFO L225 Difference]: With dead ends: 5673 [2023-12-02 14:10:18,717 INFO L226 Difference]: Without dead ends: 5671 [2023-12-02 14:10:18,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:10:18,721 INFO L413 NwaCegarLoop]: 1881 mSDtfsCounter, 2173 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 5626 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:10:18,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2187 Valid, 5626 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1162 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2023-12-02 14:10:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5671 states. [2023-12-02 14:10:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5671 to 5671. [2023-12-02 14:10:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5671 states, 3609 states have (on average 1.346633416458853) internal successors, (4860), 3684 states have internal predecessors, (4860), 1633 states have call successors, (1633), 430 states have call predecessors, (1633), 426 states have return successors, (1641), 1609 states have call predecessors, (1641), 1629 states have call successors, (1641) [2023-12-02 14:10:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 8134 transitions. [2023-12-02 14:10:19,044 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 8134 transitions. Word has length 341 [2023-12-02 14:10:19,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:10:19,045 INFO L495 AbstractCegarLoop]: Abstraction has 5671 states and 8134 transitions. [2023-12-02 14:10:19,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-12-02 14:10:19,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 8134 transitions. [2023-12-02 14:10:19,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-02 14:10:19,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:10:19,056 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:10:19,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:10:19,057 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 14:10:19,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:10:19,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1519594014, now seen corresponding path program 1 times [2023-12-02 14:10:19,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:10:19,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156727674] [2023-12-02 14:10:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:10:19,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:10:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:10:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3006 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3004 trivial. 0 not checked. [2023-12-02 14:10:19,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:10:19,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156727674] [2023-12-02 14:10:19,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156727674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:10:19,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:10:19,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:10:19,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247502340] [2023-12-02 14:10:19,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:10:19,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:10:19,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:10:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:10:19,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:10:19,880 INFO L87 Difference]: Start difference. First operand 5671 states and 8134 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-02 14:10:24,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:26,620 WARN L539 Checker$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 14:10:28,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:10:28,399 INFO L93 Difference]: Finished difference Result 5677 states and 8139 transitions. [2023-12-02 14:10:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:10:28,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 351 [2023-12-02 14:10:28,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:10:28,428 INFO L225 Difference]: With dead ends: 5677 [2023-12-02 14:10:28,428 INFO L226 Difference]: Without dead ends: 5675 [2023-12-02 14:10:28,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:10:28,432 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 2167 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:10:28,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 5629 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1161 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2023-12-02 14:10:28,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2023-12-02 14:10:28,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 5675. [2023-12-02 14:10:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5675 states, 3612 states have (on average 1.3463455149501662) internal successors, (4863), 3687 states have internal predecessors, (4863), 1633 states have call successors, (1633), 431 states have call predecessors, (1633), 427 states have return successors, (1641), 1609 states have call predecessors, (1641), 1629 states have call successors, (1641) [2023-12-02 14:10:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5675 states to 5675 states and 8137 transitions. [2023-12-02 14:10:28,764 INFO L78 Accepts]: Start accepts. Automaton has 5675 states and 8137 transitions. Word has length 351 [2023-12-02 14:10:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:10:28,765 INFO L495 AbstractCegarLoop]: Abstraction has 5675 states and 8137 transitions. [2023-12-02 14:10:28,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-02 14:10:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand 5675 states and 8137 transitions. [2023-12-02 14:10:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-12-02 14:10:28,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:10:28,770 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:10:28,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:10:28,770 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 14:10:28,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:10:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1575336583, now seen corresponding path program 1 times [2023-12-02 14:10:28,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:10:28,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480949577] [2023-12-02 14:10:28,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:10:28,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:10:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:10:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3013 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3009 trivial. 0 not checked. [2023-12-02 14:10:29,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:10:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480949577] [2023-12-02 14:10:29,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480949577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:10:29,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:10:29,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:10:29,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601486492] [2023-12-02 14:10:29,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:10:29,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:10:29,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:10:29,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:10:29,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:10:29,330 INFO L87 Difference]: Start difference. First operand 5675 states and 8137 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 14:10:32,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:33,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:34,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:37,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:10:37,209 INFO L93 Difference]: Finished difference Result 5681 states and 8142 transitions. [2023-12-02 14:10:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:10:37,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 357 [2023-12-02 14:10:37,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:10:37,244 INFO L225 Difference]: With dead ends: 5681 [2023-12-02 14:10:37,244 INFO L226 Difference]: Without dead ends: 5679 [2023-12-02 14:10:37,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:10:37,249 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 2167 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:10:37,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2179 Valid, 5629 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-02 14:10:37,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2023-12-02 14:10:37,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 5679. [2023-12-02 14:10:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5679 states, 3615 states have (on average 1.3460580912863072) internal successors, (4866), 3690 states have internal predecessors, (4866), 1633 states have call successors, (1633), 432 states have call predecessors, (1633), 428 states have return successors, (1641), 1609 states have call predecessors, (1641), 1629 states have call successors, (1641) [2023-12-02 14:10:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5679 states to 5679 states and 8140 transitions. [2023-12-02 14:10:37,684 INFO L78 Accepts]: Start accepts. Automaton has 5679 states and 8140 transitions. Word has length 357 [2023-12-02 14:10:37,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:10:37,685 INFO L495 AbstractCegarLoop]: Abstraction has 5679 states and 8140 transitions. [2023-12-02 14:10:37,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 14:10:37,685 INFO L276 IsEmpty]: Start isEmpty. Operand 5679 states and 8140 transitions. [2023-12-02 14:10:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-02 14:10:37,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:10:37,693 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:10:37,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 14:10:37,693 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 14:10:37,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:10:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1535987490, now seen corresponding path program 1 times [2023-12-02 14:10:37,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:10:37,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481160879] [2023-12-02 14:10:37,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:10:37,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:10:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:10:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3022 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3016 trivial. 0 not checked. [2023-12-02 14:10:38,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:10:38,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481160879] [2023-12-02 14:10:38,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481160879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:10:38,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:10:38,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:10:38,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594369366] [2023-12-02 14:10:38,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:10:38,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:10:38,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:10:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:10:38,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:10:38,451 INFO L87 Difference]: Start difference. First operand 5679 states and 8140 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 14:10:41,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:43,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:44,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:10:46,644 INFO L93 Difference]: Finished difference Result 5685 states and 8145 transitions. [2023-12-02 14:10:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:10:46,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 361 [2023-12-02 14:10:46,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:10:46,669 INFO L225 Difference]: With dead ends: 5685 [2023-12-02 14:10:46,669 INFO L226 Difference]: Without dead ends: 5683 [2023-12-02 14:10:46,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:10:46,672 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 2167 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2178 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:10:46,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2178 Valid, 5629 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-02 14:10:46,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5683 states. [2023-12-02 14:10:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5683 to 5683. [2023-12-02 14:10:46,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5683 states, 3618 states have (on average 1.345771144278607) internal successors, (4869), 3693 states have internal predecessors, (4869), 1633 states have call successors, (1633), 433 states have call predecessors, (1633), 429 states have return successors, (1641), 1609 states have call predecessors, (1641), 1629 states have call successors, (1641) [2023-12-02 14:10:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5683 states to 5683 states and 8143 transitions. [2023-12-02 14:10:46,974 INFO L78 Accepts]: Start accepts. Automaton has 5683 states and 8143 transitions. Word has length 361 [2023-12-02 14:10:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:10:46,975 INFO L495 AbstractCegarLoop]: Abstraction has 5683 states and 8143 transitions. [2023-12-02 14:10:46,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 14:10:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5683 states and 8143 transitions. [2023-12-02 14:10:46,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-02 14:10:46,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:10:46,981 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:10:46,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 14:10:46,981 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 14:10:46,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:10:46,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1147442110, now seen corresponding path program 1 times [2023-12-02 14:10:46,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:10:46,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582812983] [2023-12-02 14:10:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:10:46,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:10:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:10:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3036 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3028 trivial. 0 not checked. [2023-12-02 14:10:47,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:10:47,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582812983] [2023-12-02 14:10:47,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582812983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:10:47,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:10:47,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:10:47,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411497313] [2023-12-02 14:10:47,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:10:47,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:10:47,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:10:47,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:10:47,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:10:47,459 INFO L87 Difference]: Start difference. First operand 5683 states and 8143 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-02 14:10:51,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:53,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:54,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:56,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:10:56,093 INFO L93 Difference]: Finished difference Result 5689 states and 8148 transitions. [2023-12-02 14:10:56,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:10:56,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 366 [2023-12-02 14:10:56,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:10:56,107 INFO L225 Difference]: With dead ends: 5689 [2023-12-02 14:10:56,107 INFO L226 Difference]: Without dead ends: 5687 [2023-12-02 14:10:56,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:10:56,108 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 2167 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:10:56,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2177 Valid, 5629 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1162 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2023-12-02 14:10:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2023-12-02 14:10:56,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 5687. [2023-12-02 14:10:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5687 states, 3621 states have (on average 1.3454846727423364) internal successors, (4872), 3696 states have internal predecessors, (4872), 1633 states have call successors, (1633), 434 states have call predecessors, (1633), 430 states have return successors, (1641), 1609 states have call predecessors, (1641), 1629 states have call successors, (1641) [2023-12-02 14:10:56,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5687 states to 5687 states and 8146 transitions. [2023-12-02 14:10:56,374 INFO L78 Accepts]: Start accepts. Automaton has 5687 states and 8146 transitions. Word has length 366 [2023-12-02 14:10:56,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:10:56,374 INFO L495 AbstractCegarLoop]: Abstraction has 5687 states and 8146 transitions. [2023-12-02 14:10:56,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-02 14:10:56,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5687 states and 8146 transitions. [2023-12-02 14:10:56,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-02 14:10:56,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:10:56,381 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:10:56,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 14:10:56,381 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 14:10:56,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:10:56,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1929354489, now seen corresponding path program 1 times [2023-12-02 14:10:56,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:10:56,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925432719] [2023-12-02 14:10:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:10:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:10:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:10:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3055 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2023-12-02 14:10:56,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:10:56,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925432719] [2023-12-02 14:10:56,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925432719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:10:56,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:10:56,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:10:56,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393879129] [2023-12-02 14:10:56,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:10:56,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:10:56,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:10:56,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:10:56,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:10:56,848 INFO L87 Difference]: Start difference. First operand 5687 states and 8146 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-02 14:11:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:11:02,234 INFO L93 Difference]: Finished difference Result 5693 states and 8151 transitions. [2023-12-02 14:11:02,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:11:02,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 372 [2023-12-02 14:11:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:11:02,254 INFO L225 Difference]: With dead ends: 5693 [2023-12-02 14:11:02,254 INFO L226 Difference]: Without dead ends: 5691 [2023-12-02 14:11:02,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:11:02,257 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 2167 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:11:02,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 5629 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-02 14:11:02,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5691 states. [2023-12-02 14:11:02,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5691 to 5691. [2023-12-02 14:11:02,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5691 states, 3624 states have (on average 1.3451986754966887) internal successors, (4875), 3699 states have internal predecessors, (4875), 1633 states have call successors, (1633), 435 states have call predecessors, (1633), 431 states have return successors, (1641), 1609 states have call predecessors, (1641), 1629 states have call successors, (1641) [2023-12-02 14:11:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5691 states to 5691 states and 8149 transitions. [2023-12-02 14:11:02,557 INFO L78 Accepts]: Start accepts. Automaton has 5691 states and 8149 transitions. Word has length 372 [2023-12-02 14:11:02,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:11:02,558 INFO L495 AbstractCegarLoop]: Abstraction has 5691 states and 8149 transitions. [2023-12-02 14:11:02,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-02 14:11:02,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5691 states and 8149 transitions. [2023-12-02 14:11:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-02 14:11:02,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:11:02,566 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:11:02,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 14:11:02,566 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 14:11:02,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:11:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash 783452801, now seen corresponding path program 1 times [2023-12-02 14:11:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:11:02,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727345377] [2023-12-02 14:11:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:02,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:11:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:11:03,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3074 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3062 trivial. 0 not checked. [2023-12-02 14:11:03,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:11:03,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727345377] [2023-12-02 14:11:03,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727345377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:11:03,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:11:03,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:11:03,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141439451] [2023-12-02 14:11:03,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:11:03,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:11:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:11:03,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:11:03,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:11:03,015 INFO L87 Difference]: Start difference. First operand 5691 states and 8149 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 14:11:06,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:08,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:10,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:12,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:12,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:11:12,934 INFO L93 Difference]: Finished difference Result 5697 states and 8154 transitions. [2023-12-02 14:11:12,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:11:12,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 371 [2023-12-02 14:11:12,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:11:12,957 INFO L225 Difference]: With dead ends: 5697 [2023-12-02 14:11:12,957 INFO L226 Difference]: Without dead ends: 5695 [2023-12-02 14:11:12,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:11:12,961 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 2168 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:11:12,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 5629 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-12-02 14:11:12,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5695 states. [2023-12-02 14:11:13,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5695 to 5695. [2023-12-02 14:11:13,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5695 states, 3627 states have (on average 1.3449131513647643) internal successors, (4878), 3702 states have internal predecessors, (4878), 1633 states have call successors, (1633), 436 states have call predecessors, (1633), 432 states have return successors, (1641), 1609 states have call predecessors, (1641), 1629 states have call successors, (1641) [2023-12-02 14:11:13,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5695 states to 5695 states and 8152 transitions. [2023-12-02 14:11:13,435 INFO L78 Accepts]: Start accepts. Automaton has 5695 states and 8152 transitions. Word has length 371 [2023-12-02 14:11:13,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:11:13,436 INFO L495 AbstractCegarLoop]: Abstraction has 5695 states and 8152 transitions. [2023-12-02 14:11:13,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 14:11:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5695 states and 8152 transitions. [2023-12-02 14:11:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-12-02 14:11:13,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:11:13,446 INFO L195 NwaCegarLoop]: trace histogram [31, 27, 27, 27, 27, 27, 27, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:11:13,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 14:11:13,446 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 14:11:13,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:11:13,447 INFO L85 PathProgramCache]: Analyzing trace with hash 552124873, now seen corresponding path program 1 times [2023-12-02 14:11:13,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:11:13,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167489877] [2023-12-02 14:11:13,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:13,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:11:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:11:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3073 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3070 trivial. 0 not checked. [2023-12-02 14:11:14,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:11:14,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167489877] [2023-12-02 14:11:14,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167489877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:11:14,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:11:14,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:11:14,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665524291] [2023-12-02 14:11:14,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:11:14,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:11:14,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:11:14,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:11:14,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:11:14,013 INFO L87 Difference]: Start difference. First operand 5695 states and 8152 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2023-12-02 14:11:17,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:20,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:21,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:11:21,068 INFO L93 Difference]: Finished difference Result 11523 states and 16490 transitions. [2023-12-02 14:11:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:11:21,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 377 [2023-12-02 14:11:21,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:11:21,093 INFO L225 Difference]: With dead ends: 11523 [2023-12-02 14:11:21,094 INFO L226 Difference]: Without dead ends: 7139 [2023-12-02 14:11:21,113 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 14:11:21,113 INFO L413 NwaCegarLoop]: 2724 mSDtfsCounter, 1045 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 4549 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:11:21,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 4549 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-02 14:11:21,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7139 states. [2023-12-02 14:11:21,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7139 to 7081. [2023-12-02 14:11:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7081 states, 4515 states have (on average 1.3444075304540422) internal successors, (6070), 4610 states have internal predecessors, (6070), 2019 states have call successors, (2019), 550 states have call predecessors, (2019), 544 states have return successors, (2029), 1984 states have call predecessors, (2029), 2015 states have call successors, (2029) [2023-12-02 14:11:21,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 10118 transitions. [2023-12-02 14:11:21,699 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 10118 transitions. Word has length 377 [2023-12-02 14:11:21,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:11:21,700 INFO L495 AbstractCegarLoop]: Abstraction has 7081 states and 10118 transitions. [2023-12-02 14:11:21,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2023-12-02 14:11:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 10118 transitions. [2023-12-02 14:11:21,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-02 14:11:21,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:11:21,708 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 8, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:11:21,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 14:11:21,709 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 14:11:21,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:11:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash -406466041, now seen corresponding path program 1 times [2023-12-02 14:11:21,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:11:21,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129695796] [2023-12-02 14:11:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:21,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:11:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:11:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3089 trivial. 0 not checked. [2023-12-02 14:11:22,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:11:22,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129695796] [2023-12-02 14:11:22,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129695796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:11:22,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:11:22,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:11:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857551392] [2023-12-02 14:11:22,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:11:22,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:11:22,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:11:22,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:11:22,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:11:22,427 INFO L87 Difference]: Start difference. First operand 7081 states and 10118 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-02 14:11:28,782 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 14:11:30,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:11:30,705 INFO L93 Difference]: Finished difference Result 7622 states and 10761 transitions. [2023-12-02 14:11:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:11:30,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 382 [2023-12-02 14:11:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:11:30,724 INFO L225 Difference]: With dead ends: 7622 [2023-12-02 14:11:30,724 INFO L226 Difference]: Without dead ends: 7620 [2023-12-02 14:11:30,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:11:30,728 INFO L413 NwaCegarLoop]: 1900 mSDtfsCounter, 2063 mSDsluCounter, 3947 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 5847 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:11:30,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2070 Valid, 5847 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1221 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2023-12-02 14:11:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7620 states. [2023-12-02 14:11:31,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7620 to 7620. [2023-12-02 14:11:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7620 states, 4846 states have (on average 1.3353281056541477) internal successors, (6471), 4942 states have internal predecessors, (6471), 2139 states have call successors, (2139), 638 states have call predecessors, (2139), 632 states have return successors, (2149), 2103 states have call predecessors, (2149), 2135 states have call successors, (2149) [2023-12-02 14:11:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7620 states to 7620 states and 10759 transitions. [2023-12-02 14:11:31,247 INFO L78 Accepts]: Start accepts. Automaton has 7620 states and 10759 transitions. Word has length 382 [2023-12-02 14:11:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:11:31,248 INFO L495 AbstractCegarLoop]: Abstraction has 7620 states and 10759 transitions. [2023-12-02 14:11:31,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-02 14:11:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 7620 states and 10759 transitions. [2023-12-02 14:11:31,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-02 14:11:31,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:11:31,257 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:11:31,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 14:11:31,257 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 14:11:31,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:11:31,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1885946113, now seen corresponding path program 1 times [2023-12-02 14:11:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:11:31,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289150952] [2023-12-02 14:11:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:31,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:11:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:11:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3130 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3114 trivial. 0 not checked. [2023-12-02 14:11:31,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:11:31,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289150952] [2023-12-02 14:11:31,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289150952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:11:31,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:11:31,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:11:31,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241012438] [2023-12-02 14:11:31,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:11:31,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:11:31,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:11:31,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:11:31,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:11:31,955 INFO L87 Difference]: Start difference. First operand 7620 states and 10759 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-02 14:11:37,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:39,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:41,118 WARN L539 Checker$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 14:11:41,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:11:41,495 INFO L93 Difference]: Finished difference Result 7626 states and 10764 transitions. [2023-12-02 14:11:41,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:11:41,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 381 [2023-12-02 14:11:41,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:11:41,518 INFO L225 Difference]: With dead ends: 7626 [2023-12-02 14:11:41,518 INFO L226 Difference]: Without dead ends: 7624 [2023-12-02 14:11:41,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:11:41,522 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 2168 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:11:41,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 5629 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1161 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2023-12-02 14:11:41,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7624 states. [2023-12-02 14:11:42,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7624 to 7624. [2023-12-02 14:11:42,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7624 states, 4849 states have (on average 1.3351206434316354) internal successors, (6474), 4945 states have internal predecessors, (6474), 2139 states have call successors, (2139), 639 states have call predecessors, (2139), 633 states have return successors, (2149), 2103 states have call predecessors, (2149), 2135 states have call successors, (2149) [2023-12-02 14:11:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7624 states to 7624 states and 10762 transitions. [2023-12-02 14:11:42,208 INFO L78 Accepts]: Start accepts. Automaton has 7624 states and 10762 transitions. Word has length 381 [2023-12-02 14:11:42,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:11:42,209 INFO L495 AbstractCegarLoop]: Abstraction has 7624 states and 10762 transitions. [2023-12-02 14:11:42,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-02 14:11:42,209 INFO L276 IsEmpty]: Start isEmpty. Operand 7624 states and 10762 transitions. [2023-12-02 14:11:42,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2023-12-02 14:11:42,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:11:42,218 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 10, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:11:42,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 14:11:42,218 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 14:11:42,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:11:42,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1673645817, now seen corresponding path program 1 times [2023-12-02 14:11:42,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:11:42,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811164433] [2023-12-02 14:11:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:42,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:11:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:11:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3167 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3149 trivial. 0 not checked. [2023-12-02 14:11:42,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:11:42,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811164433] [2023-12-02 14:11:42,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811164433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:11:42,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:11:42,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:11:42,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577836196] [2023-12-02 14:11:42,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:11:42,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:11:42,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:11:42,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:11:42,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:11:42,950 INFO L87 Difference]: Start difference. First operand 7624 states and 10762 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2023-12-02 14:11:49,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:50,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:50,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:11:50,836 INFO L93 Difference]: Finished difference Result 7630 states and 10767 transitions. [2023-12-02 14:11:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:11:50,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 392 [2023-12-02 14:11:50,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:11:50,865 INFO L225 Difference]: With dead ends: 7630 [2023-12-02 14:11:50,865 INFO L226 Difference]: Without dead ends: 7628 [2023-12-02 14:11:50,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:11:50,871 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 2167 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:11:50,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 5629 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1162 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2023-12-02 14:11:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7628 states. [2023-12-02 14:11:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7628 to 7628. [2023-12-02 14:11:51,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7628 states, 4852 states have (on average 1.3349134377576257) internal successors, (6477), 4948 states have internal predecessors, (6477), 2139 states have call successors, (2139), 640 states have call predecessors, (2139), 634 states have return successors, (2149), 2103 states have call predecessors, (2149), 2135 states have call successors, (2149) [2023-12-02 14:11:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7628 states to 7628 states and 10765 transitions. [2023-12-02 14:11:51,548 INFO L78 Accepts]: Start accepts. Automaton has 7628 states and 10765 transitions. Word has length 392 [2023-12-02 14:11:51,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:11:51,548 INFO L495 AbstractCegarLoop]: Abstraction has 7628 states and 10765 transitions. [2023-12-02 14:11:51,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2023-12-02 14:11:51,549 INFO L276 IsEmpty]: Start isEmpty. Operand 7628 states and 10765 transitions. [2023-12-02 14:11:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-12-02 14:11:51,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:11:51,558 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:11:51,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 14:11:51,558 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 14:11:51,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:11:51,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1300265087, now seen corresponding path program 1 times [2023-12-02 14:11:51,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:11:51,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266761766] [2023-12-02 14:11:51,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:51,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:11:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:11:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3182 trivial. 0 not checked. [2023-12-02 14:11:52,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:11:52,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266761766] [2023-12-02 14:11:52,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266761766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:11:52,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:11:52,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:11:52,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677673680] [2023-12-02 14:11:52,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:11:52,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:11:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:11:52,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:11:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:11:52,094 INFO L87 Difference]: Start difference. First operand 7628 states and 10765 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-02 14:11:57,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:58,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:59,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:11:59,245 INFO L93 Difference]: Finished difference Result 7634 states and 10770 transitions. [2023-12-02 14:11:59,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:11:59,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 391 [2023-12-02 14:11:59,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:11:59,264 INFO L225 Difference]: With dead ends: 7634 [2023-12-02 14:11:59,264 INFO L226 Difference]: Without dead ends: 7632 [2023-12-02 14:11:59,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:11:59,268 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 2168 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:11:59,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 5629 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-02 14:11:59,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7632 states. [2023-12-02 14:11:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7632 to 7632. [2023-12-02 14:11:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7632 states, 4855 states have (on average 1.3347064881565396) internal successors, (6480), 4951 states have internal predecessors, (6480), 2139 states have call successors, (2139), 641 states have call predecessors, (2139), 635 states have return successors, (2149), 2103 states have call predecessors, (2149), 2135 states have call successors, (2149) [2023-12-02 14:11:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 10768 transitions. [2023-12-02 14:11:59,796 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 10768 transitions. Word has length 391 [2023-12-02 14:11:59,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:11:59,797 INFO L495 AbstractCegarLoop]: Abstraction has 7632 states and 10768 transitions. [2023-12-02 14:11:59,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2023-12-02 14:11:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 10768 transitions. [2023-12-02 14:11:59,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-12-02 14:11:59,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:11:59,807 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:11:59,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 14:11:59,808 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 14:11:59,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:11:59,808 INFO L85 PathProgramCache]: Analyzing trace with hash 295213953, now seen corresponding path program 1 times [2023-12-02 14:11:59,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:11:59,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847803375] [2023-12-02 14:11:59,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:59,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:11:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:12:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3106 trivial. 0 not checked. [2023-12-02 14:12:00,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:12:00,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847803375] [2023-12-02 14:12:00,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847803375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:12:00,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:12:00,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:12:00,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041438513] [2023-12-02 14:12:00,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:12:00,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:12:00,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:12:00,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:12:00,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:12:00,315 INFO L87 Difference]: Start difference. First operand 7632 states and 10768 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-12-02 14:12:05,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:06,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:12:06,495 INFO L93 Difference]: Finished difference Result 18342 states and 25908 transitions. [2023-12-02 14:12:06,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:12:06,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 405 [2023-12-02 14:12:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:12:06,527 INFO L225 Difference]: With dead ends: 18342 [2023-12-02 14:12:06,527 INFO L226 Difference]: Without dead ends: 10765 [2023-12-02 14:12:06,557 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 14:12:06,558 INFO L413 NwaCegarLoop]: 2319 mSDtfsCounter, 2073 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 4178 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:12:06,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2073 Valid, 4178 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-02 14:12:06,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10765 states. [2023-12-02 14:12:07,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10765 to 10681. [2023-12-02 14:12:07,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10681 states, 6805 states have (on average 1.3376928728875828) internal successors, (9103), 6969 states have internal predecessors, (9103), 2975 states have call successors, (2975), 909 states have call predecessors, (2975), 898 states have return successors, (2990), 2896 states have call predecessors, (2990), 2971 states have call successors, (2990) [2023-12-02 14:12:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10681 states to 10681 states and 15068 transitions. [2023-12-02 14:12:07,385 INFO L78 Accepts]: Start accepts. Automaton has 10681 states and 15068 transitions. Word has length 405 [2023-12-02 14:12:07,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:12:07,386 INFO L495 AbstractCegarLoop]: Abstraction has 10681 states and 15068 transitions. [2023-12-02 14:12:07,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-12-02 14:12:07,386 INFO L276 IsEmpty]: Start isEmpty. Operand 10681 states and 15068 transitions. [2023-12-02 14:12:07,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-12-02 14:12:07,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:12:07,392 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 12, 11, 11, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:12:07,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 14:12:07,392 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 14:12:07,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:12:07,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1123126238, now seen corresponding path program 1 times [2023-12-02 14:12:07,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:12:07,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281468908] [2023-12-02 14:12:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:12:07,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:12:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:12:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3246 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3224 trivial. 0 not checked. [2023-12-02 14:12:07,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:12:07,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281468908] [2023-12-02 14:12:07,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281468908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:12:07,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:12:07,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:12:07,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128724379] [2023-12-02 14:12:07,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:12:07,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:12:07,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:12:07,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:12:07,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:12:07,955 INFO L87 Difference]: Start difference. First operand 10681 states and 15068 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-02 14:12:14,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:16,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:16,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:12:16,707 INFO L93 Difference]: Finished difference Result 10687 states and 15073 transitions. [2023-12-02 14:12:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:12:16,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 401 [2023-12-02 14:12:16,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:12:16,731 INFO L225 Difference]: With dead ends: 10687 [2023-12-02 14:12:16,731 INFO L226 Difference]: Without dead ends: 10685 [2023-12-02 14:12:16,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:12:16,735 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 2167 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:12:16,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2170 Valid, 5629 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1162 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2023-12-02 14:12:16,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10685 states. [2023-12-02 14:12:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10685 to 10685. [2023-12-02 14:12:17,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10685 states, 6808 states have (on average 1.3375440658049353) internal successors, (9106), 6972 states have internal predecessors, (9106), 2975 states have call successors, (2975), 910 states have call predecessors, (2975), 899 states have return successors, (2990), 2896 states have call predecessors, (2990), 2971 states have call successors, (2990) [2023-12-02 14:12:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10685 states to 10685 states and 15071 transitions. [2023-12-02 14:12:17,538 INFO L78 Accepts]: Start accepts. Automaton has 10685 states and 15071 transitions. Word has length 401 [2023-12-02 14:12:17,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:12:17,538 INFO L495 AbstractCegarLoop]: Abstraction has 10685 states and 15071 transitions. [2023-12-02 14:12:17,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2023-12-02 14:12:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 10685 states and 15071 transitions. [2023-12-02 14:12:17,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-02 14:12:17,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:12:17,547 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 13, 12, 12, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:12:17,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 14:12:17,547 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 14:12:17,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:12:17,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1791027193, now seen corresponding path program 1 times [2023-12-02 14:12:17,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:12:17,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497440109] [2023-12-02 14:12:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:12:17,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:12:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:12:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3293 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3269 trivial. 0 not checked. [2023-12-02 14:12:18,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:12:18,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497440109] [2023-12-02 14:12:18,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497440109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:12:18,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:12:18,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:12:18,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156263368] [2023-12-02 14:12:18,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:12:18,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:12:18,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:12:18,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:12:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:12:18,074 INFO L87 Difference]: Start difference. First operand 10685 states and 15071 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-02 14:12:24,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:25,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:26,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:12:26,068 INFO L93 Difference]: Finished difference Result 10691 states and 15076 transitions. [2023-12-02 14:12:26,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:12:26,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 407 [2023-12-02 14:12:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:12:26,093 INFO L225 Difference]: With dead ends: 10691 [2023-12-02 14:12:26,093 INFO L226 Difference]: Without dead ends: 10689 [2023-12-02 14:12:26,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:12:26,098 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 2167 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2169 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:12:26,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2169 Valid, 5629 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1162 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2023-12-02 14:12:26,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10689 states. [2023-12-02 14:12:26,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10689 to 10689. [2023-12-02 14:12:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10689 states, 6811 states have (on average 1.3373953898106006) internal successors, (9109), 6975 states have internal predecessors, (9109), 2975 states have call successors, (2975), 911 states have call predecessors, (2975), 900 states have return successors, (2990), 2896 states have call predecessors, (2990), 2971 states have call successors, (2990) [2023-12-02 14:12:26,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10689 states to 10689 states and 15074 transitions. [2023-12-02 14:12:26,920 INFO L78 Accepts]: Start accepts. Automaton has 10689 states and 15074 transitions. Word has length 407 [2023-12-02 14:12:26,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:12:26,920 INFO L495 AbstractCegarLoop]: Abstraction has 10689 states and 15074 transitions. [2023-12-02 14:12:26,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2023-12-02 14:12:26,921 INFO L276 IsEmpty]: Start isEmpty. Operand 10689 states and 15074 transitions. [2023-12-02 14:12:26,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-12-02 14:12:26,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:12:26,927 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 14, 13, 13, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:12:26,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 14:12:26,927 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 14:12:26,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:12:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1919435001, now seen corresponding path program 1 times [2023-12-02 14:12:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:12:26,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580091071] [2023-12-02 14:12:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:12:26,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:12:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:12:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3343 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3317 trivial. 0 not checked. [2023-12-02 14:12:27,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:12:27,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580091071] [2023-12-02 14:12:27,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580091071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:12:27,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:12:27,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:12:27,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092347643] [2023-12-02 14:12:27,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:12:27,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:12:27,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:12:27,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:12:27,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:12:27,381 INFO L87 Difference]: Start difference. First operand 10689 states and 15074 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-02 14:12:33,765 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 14:12:34,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:12:35,296 INFO L93 Difference]: Finished difference Result 10695 states and 15079 transitions. [2023-12-02 14:12:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:12:35,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 412 [2023-12-02 14:12:35,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:12:35,322 INFO L225 Difference]: With dead ends: 10695 [2023-12-02 14:12:35,322 INFO L226 Difference]: Without dead ends: 10691 [2023-12-02 14:12:35,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:12:35,326 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 2167 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:12:35,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2168 Valid, 5629 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1162 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2023-12-02 14:12:35,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10691 states. [2023-12-02 14:12:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10691 to 10691. [2023-12-02 14:12:36,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10691 states, 6813 states have (on average 1.3371495670042566) internal successors, (9110), 6976 states have internal predecessors, (9110), 2975 states have call successors, (2975), 912 states have call predecessors, (2975), 900 states have return successors, (2990), 2896 states have call predecessors, (2990), 2971 states have call successors, (2990) [2023-12-02 14:12:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10691 states to 10691 states and 15075 transitions. [2023-12-02 14:12:36,172 INFO L78 Accepts]: Start accepts. Automaton has 10691 states and 15075 transitions. Word has length 412 [2023-12-02 14:12:36,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:12:36,172 INFO L495 AbstractCegarLoop]: Abstraction has 10691 states and 15075 transitions. [2023-12-02 14:12:36,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-02 14:12:36,172 INFO L276 IsEmpty]: Start isEmpty. Operand 10691 states and 15075 transitions. [2023-12-02 14:12:36,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-02 14:12:36,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:12:36,178 INFO L195 NwaCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 15, 14, 14, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:12:36,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 14:12:36,179 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 14:12:36,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:12:36,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1167050631, now seen corresponding path program 1 times [2023-12-02 14:12:36,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:12:36,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597884484] [2023-12-02 14:12:36,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:12:36,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:12:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:12:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3397 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 3369 trivial. 0 not checked. [2023-12-02 14:12:36,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:12:36,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597884484] [2023-12-02 14:12:36,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597884484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:12:36,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:12:36,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:12:36,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353217533] [2023-12-02 14:12:36,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:12:36,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:12:36,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:12:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:12:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:12:36,736 INFO L87 Difference]: Start difference. First operand 10691 states and 15075 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-02 14:12:41,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:43,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:44,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:12:44,115 INFO L93 Difference]: Finished difference Result 10691 states and 15075 transitions. [2023-12-02 14:12:44,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:12:44,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 417 [2023-12-02 14:12:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:12:44,137 INFO L225 Difference]: With dead ends: 10691 [2023-12-02 14:12:44,137 INFO L226 Difference]: Without dead ends: 10505 [2023-12-02 14:12:44,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:12:44,142 INFO L413 NwaCegarLoop]: 1882 mSDtfsCounter, 2163 mSDsluCounter, 3744 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 5626 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:12:44,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2163 Valid, 5626 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-02 14:12:44,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10505 states. [2023-12-02 14:12:44,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10505 to 10505. [2023-12-02 14:12:45,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10505 states, 6744 states have (on average 1.3352609727164888) internal successors, (9005), 6871 states have internal predecessors, (9005), 2881 states have call successors, (2881), 880 states have call predecessors, (2881), 878 states have return successors, (2900), 2847 states have call predecessors, (2900), 2881 states have call successors, (2900) [2023-12-02 14:12:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10505 states to 10505 states and 14786 transitions. [2023-12-02 14:12:45,032 INFO L78 Accepts]: Start accepts. Automaton has 10505 states and 14786 transitions. Word has length 417 [2023-12-02 14:12:45,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:12:45,032 INFO L495 AbstractCegarLoop]: Abstraction has 10505 states and 14786 transitions. [2023-12-02 14:12:45,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2023-12-02 14:12:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 10505 states and 14786 transitions. [2023-12-02 14:12:45,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-02 14:12:45,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:12:45,041 INFO L195 NwaCegarLoop]: trace histogram [34, 27, 27, 27, 27, 27, 27, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:12:45,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 14:12:45,041 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 14:12:45,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:12:45,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1674261550, now seen corresponding path program 1 times [2023-12-02 14:12:45,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:12:45,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432242853] [2023-12-02 14:12:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:12:45,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:12:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:12:45,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3532 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2023-12-02 14:12:45,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:12:45,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432242853] [2023-12-02 14:12:45,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432242853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:12:45,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:12:45,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:12:45,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179097688] [2023-12-02 14:12:45,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:12:45,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:12:45,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:12:45,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:12:45,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:12:45,948 INFO L87 Difference]: Start difference. First operand 10505 states and 14786 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-02 14:12:53,309 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 14:12:55,317 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 14:12:55,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:12:55,817 INFO L93 Difference]: Finished difference Result 10505 states and 14786 transitions. [2023-12-02 14:12:55,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:12:55,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 469 [2023-12-02 14:12:55,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:12:55,838 INFO L225 Difference]: With dead ends: 10505 [2023-12-02 14:12:55,838 INFO L226 Difference]: Without dead ends: 10503 [2023-12-02 14:12:55,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:12:55,841 INFO L413 NwaCegarLoop]: 1842 mSDtfsCounter, 1970 mSDsluCounter, 3852 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 5694 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:12:55,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 5694 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1189 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2023-12-02 14:12:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10503 states. [2023-12-02 14:12:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10503 to 10503. [2023-12-02 14:12:56,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10503 states, 6743 states have (on average 1.3338276731425183) internal successors, (8994), 6869 states have internal predecessors, (8994), 2881 states have call successors, (2881), 880 states have call predecessors, (2881), 878 states have return successors, (2900), 2847 states have call predecessors, (2900), 2881 states have call successors, (2900) [2023-12-02 14:12:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10503 states to 10503 states and 14775 transitions. [2023-12-02 14:12:56,670 INFO L78 Accepts]: Start accepts. Automaton has 10503 states and 14775 transitions. Word has length 469 [2023-12-02 14:12:56,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:12:56,670 INFO L495 AbstractCegarLoop]: Abstraction has 10503 states and 14775 transitions. [2023-12-02 14:12:56,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-02 14:12:56,671 INFO L276 IsEmpty]: Start isEmpty. Operand 10503 states and 14775 transitions. [2023-12-02 14:12:56,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2023-12-02 14:12:56,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:12:56,681 INFO L195 NwaCegarLoop]: trace histogram [34, 27, 27, 27, 27, 27, 27, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:12:56,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 14:12:56,681 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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 14:12:56,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:12:56,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1074184466, now seen corresponding path program 1 times [2023-12-02 14:12:56,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:12:56,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086263174] [2023-12-02 14:12:56,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:12:56,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:12:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:12:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3571 trivial. 0 not checked. [2023-12-02 14:12:56,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:12:56,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086263174] [2023-12-02 14:12:56,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086263174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:12:56,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:12:56,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:12:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380954468] [2023-12-02 14:12:56,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:12:56,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:12:56,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:12:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:12:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:12:56,975 INFO L87 Difference]: Start difference. First operand 10503 states and 14775 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-02 14:13:01,754 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 14:13:02,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:03,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:13:03,456 INFO L93 Difference]: Finished difference Result 20783 states and 29263 transitions. [2023-12-02 14:13:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:13:03,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 484 [2023-12-02 14:13:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:13:03,487 INFO L225 Difference]: With dead ends: 20783 [2023-12-02 14:13:03,488 INFO L226 Difference]: Without dead ends: 10523 [2023-12-02 14:13:03,509 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 14:13:03,510 INFO L413 NwaCegarLoop]: 1827 mSDtfsCounter, 5 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:13:03,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3650 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 758 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2023-12-02 14:13:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10523 states. [2023-12-02 14:13:04,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10523 to 10507. [2023-12-02 14:13:04,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10507 states, 6747 states have (on average 1.3336297613754262) internal successors, (8998), 6873 states have internal predecessors, (8998), 2881 states have call successors, (2881), 880 states have call predecessors, (2881), 878 states have return successors, (2900), 2847 states have call predecessors, (2900), 2881 states have call successors, (2900) [2023-12-02 14:13:04,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10507 states to 10507 states and 14779 transitions. [2023-12-02 14:13:04,360 INFO L78 Accepts]: Start accepts. Automaton has 10507 states and 14779 transitions. Word has length 484 [2023-12-02 14:13:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:13:04,361 INFO L495 AbstractCegarLoop]: Abstraction has 10507 states and 14779 transitions. [2023-12-02 14:13:04,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-12-02 14:13:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 10507 states and 14779 transitions. [2023-12-02 14:13:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-02 14:13:04,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:13:04,376 INFO L195 NwaCegarLoop]: trace histogram [34, 27, 27, 27, 27, 27, 27, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:13:04,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-02 14:13:04,376 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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 14:13:04,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:13:04,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1097672618, now seen corresponding path program 1 times [2023-12-02 14:13:04,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:13:04,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502881542] [2023-12-02 14:13:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:13:04,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:13:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:13:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3571 trivial. 0 not checked. [2023-12-02 14:13:04,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:13:04,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502881542] [2023-12-02 14:13:04,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502881542] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:13:04,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433318849] [2023-12-02 14:13:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:13:04,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:13:04,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:13:04,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:13:04,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf17fddf-945b-4ddd-a378-e889cf562cfb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:13:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:13:05,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 4272 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:13:05,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:13:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3571 trivial. 0 not checked. [2023-12-02 14:13:06,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:13:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3571 trivial. 0 not checked. [2023-12-02 14:13:06,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433318849] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:13:06,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1472109352] [2023-12-02 14:13:06,313 INFO L159 IcfgInterpreter]: Started Sifa with 185 locations of interest [2023-12-02 14:13:06,313 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:13:06,317 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:13:06,322 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:13:06,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:14:41,161 WARN L293 SmtUtils]: Spent 6.71s on a formula simplification that was a NOOP. DAG size: 3053 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 14:14:47,771 WARN L293 SmtUtils]: Spent 6.58s on a formula simplification that was a NOOP. DAG size: 3053 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 14:14:57,293 WARN L293 SmtUtils]: Spent 9.43s on a formula simplification. DAG size of input: 3054 DAG size of output: 3054 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 14:15:03,863 WARN L293 SmtUtils]: Spent 6.56s on a formula simplification that was a NOOP. DAG size: 3053 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 14:15:10,506 WARN L293 SmtUtils]: Spent 6.61s on a formula simplification that was a NOOP. DAG size: 3053 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 14:15:20,029 WARN L293 SmtUtils]: Spent 9.47s on a formula simplification. DAG size of input: 3054 DAG size of output: 3054 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 14:19:27,340 WARN L293 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 3054 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 14:19:33,747 WARN L293 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 3053 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 14:19:43,251 WARN L293 SmtUtils]: Spent 9.38s on a formula simplification. DAG size of input: 3054 DAG size of output: 3054 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 14:19:48,887 WARN L293 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 3054 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 14:19:55,498 WARN L293 SmtUtils]: Spent 6.59s on a formula simplification that was a NOOP. DAG size: 3053 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 14:20:04,987 WARN L293 SmtUtils]: Spent 9.43s on a formula simplification. DAG size of input: 3054 DAG size of output: 3054 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)