./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-ethernet-smsc-smc91c92_cs.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_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/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_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/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-ethernet-smsc-smc91c92_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/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_9c2f0bfd-10c3-4a81-880b-6c537fefb992/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 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:39:48,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:39:48,806 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 19:39:48,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:39:48,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:39:48,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:39:48,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:39:48,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:39:48,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:39:48,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:39:48,838 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:39:48,839 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:39:48,839 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:39:48,840 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:39:48,840 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:39:48,841 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:39:48,841 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:39:48,842 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:39:48,842 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:39:48,843 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:39:48,844 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:39:48,844 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:39:48,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:39:48,846 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:39:48,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:39:48,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:39:48,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:39:48,847 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:39:48,848 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:39:48,848 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:39:48,848 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:39:48,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:39:48,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:39:48,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:39:48,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:39:48,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:39:48,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:39:48,850 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:39:48,850 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:39:48,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:39:48,851 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:39:48,851 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:39:48,851 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:39:48,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:39:48,852 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_9c2f0bfd-10c3-4a81-880b-6c537fefb992/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e82a719a5cd0ec3a30cd42dbacb612fd330a6d3aa584d331bc796b2ce8b6a55 [2023-12-02 19:39:49,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:39:49,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:39:49,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:39:49,077 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:39:49,077 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:39:49,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2023-12-02 19:39:51,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:39:52,348 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:39:52,349 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2023-12-02 19:39:52,390 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh/data/3d3a96579/053c9c100a5a4c34b31891cb0eef052a/FLAGf0aff8417 [2023-12-02 19:39:52,404 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh/data/3d3a96579/053c9c100a5a4c34b31891cb0eef052a [2023-12-02 19:39:52,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:39:52,408 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:39:52,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:39:52,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:39:52,416 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:39:52,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:39:52" (1/1) ... [2023-12-02 19:39:52,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35cb018d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:52, skipping insertion in model container [2023-12-02 19:39:52,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:39:52" (1/1) ... [2023-12-02 19:39:52,554 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:39:55,192 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_9c2f0bfd-10c3-4a81-880b-6c537fefb992/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2023-12-02 19:39:55,196 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_9c2f0bfd-10c3-4a81-880b-6c537fefb992/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2023-12-02 19:39:55,197 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_9c2f0bfd-10c3-4a81-880b-6c537fefb992/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2023-12-02 19:39:55,197 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_9c2f0bfd-10c3-4a81-880b-6c537fefb992/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2023-12-02 19:39:55,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:39:55,289 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:39:55,399 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"); [5767] [2023-12-02 19:39:55,400 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)); [5774] [2023-12-02 19:39:55,401 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5781] [2023-12-02 19:39:55,403 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/f860c18/linux-kernel-locking-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [5822-5823] [2023-12-02 19:39:55,403 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (44UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [5828-5830] [2023-12-02 19:39:55,404 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/f860c18/linux-kernel-locking-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (809), "i" (12UL)); [5855-5856] [2023-12-02 19:39:55,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (45UL), [paravirt_opptr] "i" (& pv_irq_ops.restore_fl.func), [paravirt_clobber] "i" (1), "D" (f): "memory", "cc"); [5861-5863] [2023-12-02 19:39:55,406 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/home/debian/klever-work/native-scheduler-work-dir/scheduler/jobs/dfbfd2da522a1f5f4786ee57b863db44/klever-core-work-dir/f860c18/linux-kernel-locking-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (814), "i" (12UL)); [5887-5888] [2023-12-02 19:39:55,406 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (46UL), [paravirt_opptr] "i" (& pv_irq_ops.irq_disable.func), [paravirt_clobber] "i" (1): "memory", "cc"); [5893-5895] [2023-12-02 19:39:55,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %1,%0": "=q" (ret): "m" (*((unsigned char volatile *)addr)): "memory"); [6005] [2023-12-02 19:39:55,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %0,%1": : "q" (val), "m" (*((unsigned char volatile *)addr)): "memory"); [6012] [2023-12-02 19:39:55,411 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [6031] [2023-12-02 19:39:55,411 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [6039] [2023-12-02 19:39:55,411 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [6046] [2023-12-02 19:39:55,412 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inw %w1, %w0": "=a" (value): "Nd" (port)); [6054] [2023-12-02 19:39:55,412 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; outsw": "+S" (addr), "+c" (count): "d" (port)); [6061] [2023-12-02 19:39:55,412 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; insw": "+D" (addr), "+c" (count): "d" (port)); [6068] [2023-12-02 19:39:55,623 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_9c2f0bfd-10c3-4a81-880b-6c537fefb992/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350019,350032] [2023-12-02 19:39:55,624 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_9c2f0bfd-10c3-4a81-880b-6c537fefb992/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350188,350201] [2023-12-02 19:39:55,624 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_9c2f0bfd-10c3-4a81-880b-6c537fefb992/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350355,350368] [2023-12-02 19:39:55,625 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_9c2f0bfd-10c3-4a81-880b-6c537fefb992/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i[350523,350536] [2023-12-02 19:39:55,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:39:55,833 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:39:55,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55 WrapperNode [2023-12-02 19:39:55,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:39:55,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:39:55,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:39:55,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:39:55,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55" (1/1) ... [2023-12-02 19:39:55,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55" (1/1) ... [2023-12-02 19:39:56,119 INFO L138 Inliner]: procedures = 407, calls = 2657, calls flagged for inlining = 199, calls inlined = 173, statements flattened = 5732 [2023-12-02 19:39:56,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:39:56,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:39:56,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:39:56,120 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:39:56,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55" (1/1) ... [2023-12-02 19:39:56,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55" (1/1) ... [2023-12-02 19:39:56,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55" (1/1) ... [2023-12-02 19:39:56,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55" (1/1) ... [2023-12-02 19:39:56,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55" (1/1) ... [2023-12-02 19:39:56,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55" (1/1) ... [2023-12-02 19:39:56,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55" (1/1) ... [2023-12-02 19:39:56,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55" (1/1) ... [2023-12-02 19:39:56,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:39:56,410 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:39:56,410 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:39:56,411 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:39:56,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55" (1/1) ... [2023-12-02 19:39:56,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:39:56,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:39:56,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:39:56,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:39:56,477 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2023-12-02 19:39:56,477 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2023-12-02 19:39:56,477 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_detach [2023-12-02 19:39:56,478 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_detach [2023-12-02 19:39:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2023-12-02 19:39:56,478 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2023-12-02 19:39:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-12-02 19:39:56,478 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-12-02 19:39:56,479 INFO L130 BoogieDeclarations]: Found specification of procedure mhz_3288_power [2023-12-02 19:39:56,479 INFO L138 BoogieDeclarations]: Found implementation of procedure mhz_3288_power [2023-12-02 19:39:56,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 19:39:56,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 19:39:56,479 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_request_io [2023-12-02 19:39:56,480 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_request_io [2023-12-02 19:39:56,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2023-12-02 19:39:56,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2023-12-02 19:39:56,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 19:39:56,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 19:39:56,480 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-12-02 19:39:56,480 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-12-02 19:39:56,481 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-12-02 19:39:56,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-12-02 19:39:56,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 19:39:56,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 19:39:56,481 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-12-02 19:39:56,481 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-12-02 19:39:56,481 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_resume [2023-12-02 19:39:56,481 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_resume [2023-12-02 19:39:56,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 19:39:56,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 19:39:56,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:39:56,482 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_suspend [2023-12-02 19:39:56,482 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_suspend [2023-12-02 19:39:56,482 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 19:39:56,482 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 19:39:56,482 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-12-02 19:39:56,482 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-12-02 19:39:56,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-12-02 19:39:56,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-12-02 19:39:56,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 19:39:56,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 19:39:56,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:39:56,483 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2023-12-02 19:39:56,483 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2023-12-02 19:39:56,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-12-02 19:39:56,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-12-02 19:39:56,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-12-02 19:39:56,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-12-02 19:39:56,484 INFO L130 BoogieDeclarations]: Found specification of procedure cvt_ascii_address [2023-12-02 19:39:56,484 INFO L138 BoogieDeclarations]: Found implementation of procedure cvt_ascii_address [2023-12-02 19:39:56,484 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-12-02 19:39:56,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-12-02 19:39:56,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 19:39:56,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 19:39:56,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:39:56,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-12-02 19:39:56,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-12-02 19:39:56,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-12-02 19:39:56,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-12-02 19:39:56,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smc91c92_cs_driver_exit_13_2 [2023-12-02 19:39:56,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smc91c92_cs_driver_exit_13_2 [2023-12-02 19:39:56,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:39:56,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 19:39:56,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 19:39:56,486 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 19:39:56,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 19:39:56,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:39:56,486 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-12-02 19:39:56,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-12-02 19:39:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure smc_tx_timeout [2023-12-02 19:39:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_tx_timeout [2023-12-02 19:39:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-12-02 19:39:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-12-02 19:39:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure smc_reset [2023-12-02 19:39:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_reset [2023-12-02 19:39:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2023-12-02 19:39:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2023-12-02 19:39:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2023-12-02 19:39:56,488 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2023-12-02 19:39:56,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:39:56,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:39:56,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 19:39:56,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 19:39:56,488 INFO L130 BoogieDeclarations]: Found specification of procedure smc_hardware_send_packet [2023-12-02 19:39:56,488 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_hardware_send_packet [2023-12-02 19:39:56,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 19:39:56,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 19:39:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-12-02 19:39:56,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-12-02 19:39:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_smc_private [2023-12-02 19:39:56,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_smc_private [2023-12-02 19:39:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure osi_load_firmware [2023-12-02 19:39:56,489 INFO L138 BoogieDeclarations]: Found implementation of procedure osi_load_firmware [2023-12-02 19:39:56,489 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_notice [2023-12-02 19:39:56,490 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_notice [2023-12-02 19:39:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 19:39:56,490 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 19:39:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure smc_set_xcvr [2023-12-02 19:39:56,490 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_set_xcvr [2023-12-02 19:39:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-12-02 19:39:56,490 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-12-02 19:39:56,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:39:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-12-02 19:39:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-12-02 19:39:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:39:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-12-02 19:39:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-12-02 19:39:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure mot_config [2023-12-02 19:39:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mot_config [2023-12-02 19:39:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure dev_notice [2023-12-02 19:39:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_notice [2023-12-02 19:39:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 19:39:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 19:39:56,492 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 19:39:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2023-12-02 19:39:56,492 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2023-12-02 19:39:56,492 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-12-02 19:39:56,492 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-12-02 19:39:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 19:39:56,493 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 19:39:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-12-02 19:39:56,493 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-12-02 19:39:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 19:39:56,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 19:39:56,493 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-12-02 19:39:56,494 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-12-02 19:39:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2023-12-02 19:39:56,494 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2023-12-02 19:39:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-12-02 19:39:56,494 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-12-02 19:39:56,494 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 19:39:56,495 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 19:39:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 19:39:56,495 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 19:39:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:39:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_tuple [2023-12-02 19:39:56,495 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_tuple [2023-12-02 19:39:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_release [2023-12-02 19:39:56,496 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_release [2023-12-02 19:39:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 19:39:56,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 19:39:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_smc_private [2023-12-02 19:39:56,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_smc_private [2023-12-02 19:39:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_config [2023-12-02 19:39:56,497 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_config [2023-12-02 19:39:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 19:39:56,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 19:39:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure smc_interrupt [2023-12-02 19:39:56,497 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_interrupt [2023-12-02 19:39:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-12-02 19:39:56,497 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-12-02 19:39:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:39:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2023-12-02 19:39:56,498 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2023-12-02 19:39:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 19:39:56,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 19:39:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-12-02 19:39:56,498 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-12-02 19:39:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2023-12-02 19:39:56,498 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2023-12-02 19:39:57,118 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:39:57,122 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:39:57,477 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 19:40:01,775 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-12-02 19:40:01,932 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:40:03,571 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:40:03,571 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 19:40:03,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:40:03 BoogieIcfgContainer [2023-12-02 19:40:03,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:40:03,577 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:40:03,577 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:40:03,580 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:40:03,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:39:52" (1/3) ... [2023-12-02 19:40:03,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d966071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:40:03, skipping insertion in model container [2023-12-02 19:40:03,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:55" (2/3) ... [2023-12-02 19:40:03,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d966071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:40:03, skipping insertion in model container [2023-12-02 19:40:03,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:40:03" (3/3) ... [2023-12-02 19:40:03,583 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smc91c92_cs.cil.i [2023-12-02 19:40:03,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:40:03,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-02 19:40:03,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:40:03,692 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;@76e2f6f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:40:03,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 19:40:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 1370 states, 791 states have (on average 1.2882427307206068) internal successors, (1019), 809 states have internal predecessors, (1019), 503 states have call successors, (503), 74 states have call predecessors, (503), 73 states have return successors, (497), 495 states have call predecessors, (497), 497 states have call successors, (497) [2023-12-02 19:40:03,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 19:40:03,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:03,727 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:03,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:40:03,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:03,732 INFO L85 PathProgramCache]: Analyzing trace with hash 573982481, now seen corresponding path program 1 times [2023-12-02 19:40:03,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:03,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777634333] [2023-12-02 19:40:03,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:03,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-02 19:40:04,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:04,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777634333] [2023-12-02 19:40:04,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777634333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:04,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:04,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:04,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466204497] [2023-12-02 19:40:04,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:04,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:40:04,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:04,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:40:04,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:04,779 INFO L87 Difference]: Start difference. First operand has 1370 states, 791 states have (on average 1.2882427307206068) internal successors, (1019), 809 states have internal predecessors, (1019), 503 states have call successors, (503), 74 states have call predecessors, (503), 73 states have return successors, (497), 495 states have call predecessors, (497), 497 states have call successors, (497) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-02 19:40:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:06,432 INFO L93 Difference]: Finished difference Result 3986 states and 5961 transitions. [2023-12-02 19:40:06,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:40:06,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2023-12-02 19:40:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:06,473 INFO L225 Difference]: With dead ends: 3986 [2023-12-02 19:40:06,473 INFO L226 Difference]: Without dead ends: 2631 [2023-12-02 19:40:06,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:06,494 INFO L413 NwaCegarLoop]: 1761 mSDtfsCounter, 1893 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:06,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1893 Valid, 3478 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 19:40:06,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2023-12-02 19:40:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2627. [2023-12-02 19:40:06,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 1532 states have (on average 1.2826370757180157) internal successors, (1965), 1567 states have internal predecessors, (1965), 950 states have call successors, (950), 143 states have call predecessors, (950), 142 states have return successors, (946), 942 states have call predecessors, (946), 946 states have call successors, (946) [2023-12-02 19:40:06,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3861 transitions. [2023-12-02 19:40:06,859 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3861 transitions. Word has length 141 [2023-12-02 19:40:06,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:06,860 INFO L495 AbstractCegarLoop]: Abstraction has 2627 states and 3861 transitions. [2023-12-02 19:40:06,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-02 19:40:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3861 transitions. [2023-12-02 19:40:06,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-02 19:40:06,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:06,867 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:06,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:40:06,867 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:40:06,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:06,868 INFO L85 PathProgramCache]: Analyzing trace with hash -86956093, now seen corresponding path program 1 times [2023-12-02 19:40:06,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:06,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476603638] [2023-12-02 19:40:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:06,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-02 19:40:07,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:07,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476603638] [2023-12-02 19:40:07,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476603638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:07,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:07,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:07,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581826013] [2023-12-02 19:40:07,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:07,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:40:07,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:07,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:40:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:07,297 INFO L87 Difference]: Start difference. First operand 2627 states and 3861 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-02 19:40:09,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:09,846 INFO L93 Difference]: Finished difference Result 7371 states and 10791 transitions. [2023-12-02 19:40:09,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:40:09,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2023-12-02 19:40:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:09,878 INFO L225 Difference]: With dead ends: 7371 [2023-12-02 19:40:09,878 INFO L226 Difference]: Without dead ends: 4769 [2023-12-02 19:40:09,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:09,891 INFO L413 NwaCegarLoop]: 1740 mSDtfsCounter, 1595 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:09,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 3430 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 19:40:09,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4769 states. [2023-12-02 19:40:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4769 to 4740. [2023-12-02 19:40:10,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 2767 states have (on average 1.2743043006866643) internal successors, (3526), 2835 states have internal predecessors, (3526), 1699 states have call successors, (1699), 276 states have call predecessors, (1699), 271 states have return successors, (1695), 1676 states have call predecessors, (1695), 1695 states have call successors, (1695) [2023-12-02 19:40:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 6920 transitions. [2023-12-02 19:40:10,191 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 6920 transitions. Word has length 149 [2023-12-02 19:40:10,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:10,192 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 6920 transitions. [2023-12-02 19:40:10,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-02 19:40:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 6920 transitions. [2023-12-02 19:40:10,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-02 19:40:10,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:10,196 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:10,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:40:10,197 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 19:40:10,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:10,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2019366942, now seen corresponding path program 1 times [2023-12-02 19:40:10,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:10,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929511630] [2023-12-02 19:40:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:10,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-02 19:40:10,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:10,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929511630] [2023-12-02 19:40:10,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929511630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:10,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:10,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:10,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144368039] [2023-12-02 19:40:10,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:10,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:40:10,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:10,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:40:10,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:10,557 INFO L87 Difference]: Start difference. First operand 4740 states and 6920 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-02 19:40:12,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:12,065 INFO L93 Difference]: Finished difference Result 9421 states and 13742 transitions. [2023-12-02 19:40:12,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:40:12,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 160 [2023-12-02 19:40:12,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:12,104 INFO L225 Difference]: With dead ends: 9421 [2023-12-02 19:40:12,104 INFO L226 Difference]: Without dead ends: 4706 [2023-12-02 19:40:12,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:12,127 INFO L413 NwaCegarLoop]: 1727 mSDtfsCounter, 1928 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:12,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 1778 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 19:40:12,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2023-12-02 19:40:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4706. [2023-12-02 19:40:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4706 states, 2753 states have (on average 1.271703596077007) internal successors, (3501), 2821 states have internal predecessors, (3501), 1675 states have call successors, (1675), 280 states have call predecessors, (1675), 275 states have return successors, (1671), 1652 states have call predecessors, (1671), 1671 states have call successors, (1671) [2023-12-02 19:40:12,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4706 states to 4706 states and 6847 transitions. [2023-12-02 19:40:12,505 INFO L78 Accepts]: Start accepts. Automaton has 4706 states and 6847 transitions. Word has length 160 [2023-12-02 19:40:12,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:12,506 INFO L495 AbstractCegarLoop]: Abstraction has 4706 states and 6847 transitions. [2023-12-02 19:40:12,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-02 19:40:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4706 states and 6847 transitions. [2023-12-02 19:40:12,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-02 19:40:12,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:12,510 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:12,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:40:12,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:40:12,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:12,511 INFO L85 PathProgramCache]: Analyzing trace with hash -258664396, now seen corresponding path program 1 times [2023-12-02 19:40:12,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:12,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328785885] [2023-12-02 19:40:12,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:12,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-12-02 19:40:13,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:13,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328785885] [2023-12-02 19:40:13,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328785885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:13,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:13,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:13,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799541079] [2023-12-02 19:40:13,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:13,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:40:13,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:13,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:40:13,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:13,084 INFO L87 Difference]: Start difference. First operand 4706 states and 6847 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-02 19:40:14,423 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 19:40:14,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:14,985 INFO L93 Difference]: Finished difference Result 8443 states and 12226 transitions. [2023-12-02 19:40:14,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:40:14,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 161 [2023-12-02 19:40:14,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:15,010 INFO L225 Difference]: With dead ends: 8443 [2023-12-02 19:40:15,010 INFO L226 Difference]: Without dead ends: 3780 [2023-12-02 19:40:15,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:15,027 INFO L413 NwaCegarLoop]: 1437 mSDtfsCounter, 1605 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:15,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 1488 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 19:40:15,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2023-12-02 19:40:15,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 3780. [2023-12-02 19:40:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 2233 states have (on average 1.2794446932377967) internal successors, (2857), 2283 states have internal predecessors, (2857), 1285 states have call successors, (1285), 264 states have call predecessors, (1285), 259 states have return successors, (1281), 1262 states have call predecessors, (1281), 1281 states have call successors, (1281) [2023-12-02 19:40:15,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 5423 transitions. [2023-12-02 19:40:15,277 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 5423 transitions. Word has length 161 [2023-12-02 19:40:15,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:15,277 INFO L495 AbstractCegarLoop]: Abstraction has 3780 states and 5423 transitions. [2023-12-02 19:40:15,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-02 19:40:15,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 5423 transitions. [2023-12-02 19:40:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-02 19:40:15,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:15,281 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 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] [2023-12-02 19:40:15,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:40:15,282 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 19:40:15,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:15,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1547703338, now seen corresponding path program 1 times [2023-12-02 19:40:15,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:15,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549895587] [2023-12-02 19:40:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:15,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-12-02 19:40:15,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:15,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549895587] [2023-12-02 19:40:15,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549895587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:15,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:15,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:15,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411546599] [2023-12-02 19:40:15,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:15,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:15,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:15,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:15,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:15,900 INFO L87 Difference]: Start difference. First operand 3780 states and 5423 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 19:40:18,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:18,389 INFO L93 Difference]: Finished difference Result 3786 states and 5428 transitions. [2023-12-02 19:40:18,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:18,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 183 [2023-12-02 19:40:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:18,414 INFO L225 Difference]: With dead ends: 3786 [2023-12-02 19:40:18,414 INFO L226 Difference]: Without dead ends: 3784 [2023-12-02 19:40:18,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:18,417 INFO L413 NwaCegarLoop]: 1420 mSDtfsCounter, 1596 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 4246 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:18,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 4246 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 19:40:18,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2023-12-02 19:40:18,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 3784. [2023-12-02 19:40:18,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 2236 states have (on average 1.2790697674418605) internal successors, (2860), 2286 states have internal predecessors, (2860), 1285 states have call successors, (1285), 265 states have call predecessors, (1285), 260 states have return successors, (1281), 1262 states have call predecessors, (1281), 1281 states have call successors, (1281) [2023-12-02 19:40:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5426 transitions. [2023-12-02 19:40:18,627 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5426 transitions. Word has length 183 [2023-12-02 19:40:18,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:18,628 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 5426 transitions. [2023-12-02 19:40:18,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-02 19:40:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5426 transitions. [2023-12-02 19:40:18,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-02 19:40:18,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:18,633 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:18,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:40:18,633 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 19:40:18,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:18,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1555491226, now seen corresponding path program 1 times [2023-12-02 19:40:18,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:18,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601283081] [2023-12-02 19:40:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:18,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2023-12-02 19:40:19,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:19,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601283081] [2023-12-02 19:40:19,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601283081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:19,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:19,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484404646] [2023-12-02 19:40:19,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:19,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:19,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:19,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:19,178 INFO L87 Difference]: Start difference. First operand 3784 states and 5426 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 19:40:21,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:21,163 INFO L93 Difference]: Finished difference Result 3790 states and 5431 transitions. [2023-12-02 19:40:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:21,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 192 [2023-12-02 19:40:21,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:21,185 INFO L225 Difference]: With dead ends: 3790 [2023-12-02 19:40:21,185 INFO L226 Difference]: Without dead ends: 3788 [2023-12-02 19:40:21,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:21,188 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1590 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:21,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 4249 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 19:40:21,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2023-12-02 19:40:21,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 3788. [2023-12-02 19:40:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 2239 states have (on average 1.2786958463599822) internal successors, (2863), 2289 states have internal predecessors, (2863), 1285 states have call successors, (1285), 266 states have call predecessors, (1285), 261 states have return successors, (1281), 1262 states have call predecessors, (1281), 1281 states have call successors, (1281) [2023-12-02 19:40:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 5429 transitions. [2023-12-02 19:40:21,417 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 5429 transitions. Word has length 192 [2023-12-02 19:40:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:21,418 INFO L495 AbstractCegarLoop]: Abstraction has 3788 states and 5429 transitions. [2023-12-02 19:40:21,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-02 19:40:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 5429 transitions. [2023-12-02 19:40:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-02 19:40:21,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:21,422 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 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] [2023-12-02 19:40:21,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:40:21,422 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 19:40:21,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:21,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1577028281, now seen corresponding path program 1 times [2023-12-02 19:40:21,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:21,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155778008] [2023-12-02 19:40:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:21,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2023-12-02 19:40:21,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:21,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155778008] [2023-12-02 19:40:21,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155778008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:21,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:21,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:21,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255271584] [2023-12-02 19:40:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:21,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:21,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:21,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:21,908 INFO L87 Difference]: Start difference. First operand 3788 states and 5429 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 19:40:24,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:24,070 INFO L93 Difference]: Finished difference Result 3794 states and 5434 transitions. [2023-12-02 19:40:24,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:24,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 197 [2023-12-02 19:40:24,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:24,097 INFO L225 Difference]: With dead ends: 3794 [2023-12-02 19:40:24,097 INFO L226 Difference]: Without dead ends: 3792 [2023-12-02 19:40:24,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:24,100 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1590 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:24,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1599 Valid, 4249 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 19:40:24,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2023-12-02 19:40:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 3792. [2023-12-02 19:40:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 2242 states have (on average 1.2783229259589652) internal successors, (2866), 2292 states have internal predecessors, (2866), 1285 states have call successors, (1285), 267 states have call predecessors, (1285), 262 states have return successors, (1281), 1262 states have call predecessors, (1281), 1281 states have call successors, (1281) [2023-12-02 19:40:24,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 5432 transitions. [2023-12-02 19:40:24,388 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 5432 transitions. Word has length 197 [2023-12-02 19:40:24,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:24,389 INFO L495 AbstractCegarLoop]: Abstraction has 3792 states and 5432 transitions. [2023-12-02 19:40:24,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-02 19:40:24,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 5432 transitions. [2023-12-02 19:40:24,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-02 19:40:24,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:24,394 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 4, 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] [2023-12-02 19:40:24,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 19:40:24,394 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 19:40:24,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash -517028973, now seen corresponding path program 1 times [2023-12-02 19:40:24,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:24,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155499531] [2023-12-02 19:40:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:24,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2023-12-02 19:40:24,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:24,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155499531] [2023-12-02 19:40:24,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155499531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:24,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:24,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508420416] [2023-12-02 19:40:24,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:24,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:24,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:24,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:24,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:24,939 INFO L87 Difference]: Start difference. First operand 3792 states and 5432 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-02 19:40:27,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:27,333 INFO L93 Difference]: Finished difference Result 3798 states and 5437 transitions. [2023-12-02 19:40:27,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:27,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 201 [2023-12-02 19:40:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:27,346 INFO L225 Difference]: With dead ends: 3798 [2023-12-02 19:40:27,347 INFO L226 Difference]: Without dead ends: 3796 [2023-12-02 19:40:27,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:27,349 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1590 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:27,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 4249 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 19:40:27,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2023-12-02 19:40:27,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3796. [2023-12-02 19:40:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3796 states, 2245 states have (on average 1.2779510022271714) internal successors, (2869), 2295 states have internal predecessors, (2869), 1285 states have call successors, (1285), 268 states have call predecessors, (1285), 263 states have return successors, (1281), 1262 states have call predecessors, (1281), 1281 states have call successors, (1281) [2023-12-02 19:40:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 5435 transitions. [2023-12-02 19:40:27,753 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 5435 transitions. Word has length 201 [2023-12-02 19:40:27,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:27,754 INFO L495 AbstractCegarLoop]: Abstraction has 3796 states and 5435 transitions. [2023-12-02 19:40:27,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-02 19:40:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 5435 transitions. [2023-12-02 19:40:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-02 19:40:27,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:27,760 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 5, 5, 4, 4, 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] [2023-12-02 19:40:27,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 19:40:27,760 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 19:40:27,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:27,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1151934062, now seen corresponding path program 1 times [2023-12-02 19:40:27,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:27,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137240074] [2023-12-02 19:40:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:27,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2023-12-02 19:40:28,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:28,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137240074] [2023-12-02 19:40:28,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137240074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:28,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:28,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:28,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180695731] [2023-12-02 19:40:28,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:28,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:28,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:28,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:28,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:28,405 INFO L87 Difference]: Start difference. First operand 3796 states and 5435 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-02 19:40:29,806 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 19:40:30,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:30,824 INFO L93 Difference]: Finished difference Result 3802 states and 5440 transitions. [2023-12-02 19:40:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:30,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 206 [2023-12-02 19:40:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:30,835 INFO L225 Difference]: With dead ends: 3802 [2023-12-02 19:40:30,836 INFO L226 Difference]: Without dead ends: 3800 [2023-12-02 19:40:30,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:30,837 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1590 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:30,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 4249 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 19:40:30,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2023-12-02 19:40:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3800. [2023-12-02 19:40:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 2248 states have (on average 1.2775800711743772) internal successors, (2872), 2298 states have internal predecessors, (2872), 1285 states have call successors, (1285), 269 states have call predecessors, (1285), 264 states have return successors, (1281), 1262 states have call predecessors, (1281), 1281 states have call successors, (1281) [2023-12-02 19:40:31,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 5438 transitions. [2023-12-02 19:40:31,235 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 5438 transitions. Word has length 206 [2023-12-02 19:40:31,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:31,235 INFO L495 AbstractCegarLoop]: Abstraction has 3800 states and 5438 transitions. [2023-12-02 19:40:31,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-02 19:40:31,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 5438 transitions. [2023-12-02 19:40:31,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-02 19:40:31,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:31,242 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 6, 5, 5, 4, 4, 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] [2023-12-02 19:40:31,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 19:40:31,242 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 19:40:31,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1727859767, now seen corresponding path program 1 times [2023-12-02 19:40:31,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:31,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67672228] [2023-12-02 19:40:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:31,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-02 19:40:31,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:31,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67672228] [2023-12-02 19:40:31,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67672228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:31,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:31,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:31,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652866411] [2023-12-02 19:40:31,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:31,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:31,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:31,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:31,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:31,840 INFO L87 Difference]: Start difference. First operand 3800 states and 5438 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-02 19:40:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:34,016 INFO L93 Difference]: Finished difference Result 3806 states and 5443 transitions. [2023-12-02 19:40:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:34,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 208 [2023-12-02 19:40:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:34,026 INFO L225 Difference]: With dead ends: 3806 [2023-12-02 19:40:34,027 INFO L226 Difference]: Without dead ends: 3804 [2023-12-02 19:40:34,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:34,028 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1591 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:34,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 4249 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 19:40:34,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3804 states. [2023-12-02 19:40:34,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3804 to 3804. [2023-12-02 19:40:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3804 states, 2251 states have (on average 1.2772101288316304) internal successors, (2875), 2301 states have internal predecessors, (2875), 1285 states have call successors, (1285), 270 states have call predecessors, (1285), 265 states have return successors, (1281), 1262 states have call predecessors, (1281), 1281 states have call successors, (1281) [2023-12-02 19:40:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 5441 transitions. [2023-12-02 19:40:34,391 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 5441 transitions. Word has length 208 [2023-12-02 19:40:34,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:34,391 INFO L495 AbstractCegarLoop]: Abstraction has 3804 states and 5441 transitions. [2023-12-02 19:40:34,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-02 19:40:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 5441 transitions. [2023-12-02 19:40:34,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-02 19:40:34,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:34,399 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 7, 6, 6, 4, 4, 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] [2023-12-02 19:40:34,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 19:40:34,399 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:40:34,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:34,399 INFO L85 PathProgramCache]: Analyzing trace with hash 614255562, now seen corresponding path program 1 times [2023-12-02 19:40:34,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:34,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677276882] [2023-12-02 19:40:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:34,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2023-12-02 19:40:34,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677276882] [2023-12-02 19:40:34,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677276882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:34,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:34,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:34,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128195050] [2023-12-02 19:40:34,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:34,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:34,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:34,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:34,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:34,849 INFO L87 Difference]: Start difference. First operand 3804 states and 5441 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-02 19:40:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:36,306 INFO L93 Difference]: Finished difference Result 3930 states and 5566 transitions. [2023-12-02 19:40:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:36,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 213 [2023-12-02 19:40:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:36,319 INFO L225 Difference]: With dead ends: 3930 [2023-12-02 19:40:36,319 INFO L226 Difference]: Without dead ends: 3928 [2023-12-02 19:40:36,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:36,321 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1367 mSDsluCounter, 3060 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 4481 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:36,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 4481 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 19:40:36,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2023-12-02 19:40:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3928. [2023-12-02 19:40:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 2320 states have (on average 1.271551724137931) internal successors, (2950), 2370 states have internal predecessors, (2950), 1309 states have call successors, (1309), 301 states have call predecessors, (1309), 296 states have return successors, (1305), 1286 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-12-02 19:40:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 5564 transitions. [2023-12-02 19:40:36,669 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 5564 transitions. Word has length 213 [2023-12-02 19:40:36,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:36,669 INFO L495 AbstractCegarLoop]: Abstraction has 3928 states and 5564 transitions. [2023-12-02 19:40:36,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-02 19:40:36,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 5564 transitions. [2023-12-02 19:40:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-02 19:40:36,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:36,676 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 8, 7, 7, 4, 4, 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] [2023-12-02 19:40:36,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 19:40:36,676 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 19:40:36,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:36,677 INFO L85 PathProgramCache]: Analyzing trace with hash -84809769, now seen corresponding path program 1 times [2023-12-02 19:40:36,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:36,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877380835] [2023-12-02 19:40:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:36,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2023-12-02 19:40:37,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:37,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877380835] [2023-12-02 19:40:37,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877380835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:37,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:37,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:37,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141887297] [2023-12-02 19:40:37,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:37,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:37,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:37,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:37,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:37,144 INFO L87 Difference]: Start difference. First operand 3928 states and 5564 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:40:39,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:39,609 INFO L93 Difference]: Finished difference Result 3934 states and 5569 transitions. [2023-12-02 19:40:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:39,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 218 [2023-12-02 19:40:39,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:39,623 INFO L225 Difference]: With dead ends: 3934 [2023-12-02 19:40:39,624 INFO L226 Difference]: Without dead ends: 3932 [2023-12-02 19:40:39,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:39,626 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1591 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:39,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 4249 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 19:40:39,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2023-12-02 19:40:39,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3932. [2023-12-02 19:40:39,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3932 states, 2323 states have (on average 1.271201033146793) internal successors, (2953), 2373 states have internal predecessors, (2953), 1309 states have call successors, (1309), 302 states have call predecessors, (1309), 297 states have return successors, (1305), 1286 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-12-02 19:40:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 5567 transitions. [2023-12-02 19:40:39,921 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 5567 transitions. Word has length 218 [2023-12-02 19:40:39,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:39,922 INFO L495 AbstractCegarLoop]: Abstraction has 3932 states and 5567 transitions. [2023-12-02 19:40:39,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-02 19:40:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 5567 transitions. [2023-12-02 19:40:39,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-02 19:40:39,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:39,925 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 9, 8, 8, 4, 4, 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] [2023-12-02 19:40:39,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 19:40:39,926 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 19:40:39,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:39,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1346739286, now seen corresponding path program 1 times [2023-12-02 19:40:39,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:39,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376812902] [2023-12-02 19:40:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:39,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-12-02 19:40:40,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:40,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376812902] [2023-12-02 19:40:40,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376812902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:40,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:40,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:40,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983213185] [2023-12-02 19:40:40,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:40,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:40,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:40,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:40,443 INFO L87 Difference]: Start difference. First operand 3932 states and 5567 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (31), 3 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 19:40:42,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:42,501 INFO L93 Difference]: Finished difference Result 3938 states and 5572 transitions. [2023-12-02 19:40:42,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:42,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (31), 3 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 223 [2023-12-02 19:40:42,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:42,511 INFO L225 Difference]: With dead ends: 3938 [2023-12-02 19:40:42,511 INFO L226 Difference]: Without dead ends: 3936 [2023-12-02 19:40:42,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:42,514 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1591 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:42,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 4249 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 19:40:42,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2023-12-02 19:40:42,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3936. [2023-12-02 19:40:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3936 states, 2326 states have (on average 1.2708512467755804) internal successors, (2956), 2376 states have internal predecessors, (2956), 1309 states have call successors, (1309), 303 states have call predecessors, (1309), 298 states have return successors, (1305), 1286 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-12-02 19:40:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3936 states to 3936 states and 5570 transitions. [2023-12-02 19:40:42,868 INFO L78 Accepts]: Start accepts. Automaton has 3936 states and 5570 transitions. Word has length 223 [2023-12-02 19:40:42,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:42,869 INFO L495 AbstractCegarLoop]: Abstraction has 3936 states and 5570 transitions. [2023-12-02 19:40:42,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (31), 3 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 19:40:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3936 states and 5570 transitions. [2023-12-02 19:40:42,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-02 19:40:42,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:42,874 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 10, 9, 9, 5, 5, 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] [2023-12-02 19:40:42,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 19:40:42,874 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 19:40:42,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1615525235, now seen corresponding path program 1 times [2023-12-02 19:40:42,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:42,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760473683] [2023-12-02 19:40:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:42,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 814 trivial. 0 not checked. [2023-12-02 19:40:43,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:43,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760473683] [2023-12-02 19:40:43,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760473683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:43,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:43,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:43,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680782691] [2023-12-02 19:40:43,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:43,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:43,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:43,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:43,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:43,266 INFO L87 Difference]: Start difference. First operand 3936 states and 5570 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 19:40:45,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:45,216 INFO L93 Difference]: Finished difference Result 3942 states and 5575 transitions. [2023-12-02 19:40:45,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:45,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 231 [2023-12-02 19:40:45,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:45,228 INFO L225 Difference]: With dead ends: 3942 [2023-12-02 19:40:45,228 INFO L226 Difference]: Without dead ends: 3940 [2023-12-02 19:40:45,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:45,230 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1590 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:45,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 4249 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 19:40:45,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2023-12-02 19:40:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3940. [2023-12-02 19:40:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3940 states, 2329 states have (on average 1.2705023615285531) internal successors, (2959), 2379 states have internal predecessors, (2959), 1309 states have call successors, (1309), 304 states have call predecessors, (1309), 299 states have return successors, (1305), 1286 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-12-02 19:40:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3940 states to 3940 states and 5573 transitions. [2023-12-02 19:40:45,687 INFO L78 Accepts]: Start accepts. Automaton has 3940 states and 5573 transitions. Word has length 231 [2023-12-02 19:40:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:45,688 INFO L495 AbstractCegarLoop]: Abstraction has 3940 states and 5573 transitions. [2023-12-02 19:40:45,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 19:40:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3940 states and 5573 transitions. [2023-12-02 19:40:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-02 19:40:45,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:45,692 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 11, 10, 10, 5, 5, 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] [2023-12-02 19:40:45,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 19:40:45,692 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 19:40:45,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:45,692 INFO L85 PathProgramCache]: Analyzing trace with hash -210786546, now seen corresponding path program 1 times [2023-12-02 19:40:45,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:45,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995074485] [2023-12-02 19:40:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:45,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2023-12-02 19:40:46,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:46,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995074485] [2023-12-02 19:40:46,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995074485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:46,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:46,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:46,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363239321] [2023-12-02 19:40:46,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:46,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:46,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:46,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:46,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:46,087 INFO L87 Difference]: Start difference. First operand 3940 states and 5573 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-02 19:40:48,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:48,200 INFO L93 Difference]: Finished difference Result 3946 states and 5578 transitions. [2023-12-02 19:40:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:48,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 236 [2023-12-02 19:40:48,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:48,209 INFO L225 Difference]: With dead ends: 3946 [2023-12-02 19:40:48,209 INFO L226 Difference]: Without dead ends: 3942 [2023-12-02 19:40:48,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:48,211 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1590 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:48,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 4249 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 19:40:48,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3942 states. [2023-12-02 19:40:48,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3942 to 3942. [2023-12-02 19:40:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 2331 states have (on average 1.2698412698412698) internal successors, (2960), 2380 states have internal predecessors, (2960), 1309 states have call successors, (1309), 305 states have call predecessors, (1309), 299 states have return successors, (1305), 1286 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-12-02 19:40:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5574 transitions. [2023-12-02 19:40:48,540 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5574 transitions. Word has length 236 [2023-12-02 19:40:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:48,540 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 5574 transitions. [2023-12-02 19:40:48,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-02 19:40:48,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5574 transitions. [2023-12-02 19:40:48,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-02 19:40:48,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:48,546 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 12, 11, 11, 4, 4, 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] [2023-12-02 19:40:48,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 19:40:48,546 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:40:48,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1236494569, now seen corresponding path program 1 times [2023-12-02 19:40:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:48,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483948005] [2023-12-02 19:40:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:48,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 883 trivial. 0 not checked. [2023-12-02 19:40:48,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:48,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483948005] [2023-12-02 19:40:48,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483948005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:48,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:48,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:40:48,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696097553] [2023-12-02 19:40:48,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:48,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:40:48,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:48,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:40:48,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:40:48,934 INFO L87 Difference]: Start difference. First operand 3942 states and 5574 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 19:40:50,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:50,447 INFO L93 Difference]: Finished difference Result 3942 states and 5574 transitions. [2023-12-02 19:40:50,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:40:50,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 238 [2023-12-02 19:40:50,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:50,455 INFO L225 Difference]: With dead ends: 3942 [2023-12-02 19:40:50,455 INFO L226 Difference]: Without dead ends: 3861 [2023-12-02 19:40:50,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:40:50,457 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1587 mSDsluCounter, 2825 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 4246 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:50,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 4246 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 19:40:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2023-12-02 19:40:50,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3861. [2023-12-02 19:40:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3861 states, 2291 states have (on average 1.2719336534264514) internal successors, (2914), 2334 states have internal predecessors, (2914), 1282 states have call successors, (1282), 290 states have call predecessors, (1282), 286 states have return successors, (1282), 1266 states have call predecessors, (1282), 1282 states have call successors, (1282) [2023-12-02 19:40:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3861 states to 3861 states and 5478 transitions. [2023-12-02 19:40:50,797 INFO L78 Accepts]: Start accepts. Automaton has 3861 states and 5478 transitions. Word has length 238 [2023-12-02 19:40:50,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:50,797 INFO L495 AbstractCegarLoop]: Abstraction has 3861 states and 5478 transitions. [2023-12-02 19:40:50,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-12-02 19:40:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3861 states and 5478 transitions. [2023-12-02 19:40:50,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-02 19:40:50,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:50,802 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 12, 12, 12, 12, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:50,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 19:40:50,802 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:40:50,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:50,803 INFO L85 PathProgramCache]: Analyzing trace with hash -566594042, now seen corresponding path program 1 times [2023-12-02 19:40:50,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:50,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936671899] [2023-12-02 19:40:50,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:50,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2023-12-02 19:40:51,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936671899] [2023-12-02 19:40:51,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936671899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:51,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:51,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:51,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456333244] [2023-12-02 19:40:51,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:51,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:40:51,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:51,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:40:51,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:51,223 INFO L87 Difference]: Start difference. First operand 3861 states and 5478 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-02 19:40:52,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:52,882 INFO L93 Difference]: Finished difference Result 6573 states and 9308 transitions. [2023-12-02 19:40:52,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:40:52,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 248 [2023-12-02 19:40:52,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:52,889 INFO L225 Difference]: With dead ends: 6573 [2023-12-02 19:40:52,889 INFO L226 Difference]: Without dead ends: 2755 [2023-12-02 19:40:52,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:52,901 INFO L413 NwaCegarLoop]: 1762 mSDtfsCounter, 771 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:52,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 3108 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 19:40:52,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2023-12-02 19:40:53,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2749. [2023-12-02 19:40:53,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1660 states have (on average 1.260843373493976) internal successors, (2093), 1687 states have internal predecessors, (2093), 875 states have call successors, (875), 214 states have call predecessors, (875), 212 states have return successors, (875), 864 states have call predecessors, (875), 875 states have call successors, (875) [2023-12-02 19:40:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3843 transitions. [2023-12-02 19:40:53,153 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3843 transitions. Word has length 248 [2023-12-02 19:40:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:53,153 INFO L495 AbstractCegarLoop]: Abstraction has 2749 states and 3843 transitions. [2023-12-02 19:40:53,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-02 19:40:53,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3843 transitions. [2023-12-02 19:40:53,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-02 19:40:53,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:53,157 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 12, 12, 12, 12, 12, 12, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:53,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 19:40:53,157 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:40:53,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:53,158 INFO L85 PathProgramCache]: Analyzing trace with hash 315132113, now seen corresponding path program 1 times [2023-12-02 19:40:53,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:53,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047968645] [2023-12-02 19:40:53,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:53,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2023-12-02 19:40:53,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:53,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047968645] [2023-12-02 19:40:53,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047968645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:53,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:53,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:53,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9984220] [2023-12-02 19:40:53,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:53,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:40:53,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:53,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:40:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:53,479 INFO L87 Difference]: Start difference. First operand 2749 states and 3843 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2023-12-02 19:40:55,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:55,397 INFO L93 Difference]: Finished difference Result 6112 states and 8559 transitions. [2023-12-02 19:40:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:40:55,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 295 [2023-12-02 19:40:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:55,404 INFO L225 Difference]: With dead ends: 6112 [2023-12-02 19:40:55,404 INFO L226 Difference]: Without dead ends: 3465 [2023-12-02 19:40:55,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:55,411 INFO L413 NwaCegarLoop]: 1998 mSDtfsCounter, 779 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:55,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 3339 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 19:40:55,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2023-12-02 19:40:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3459. [2023-12-02 19:40:55,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 2092 states have (on average 1.2581261950286806) internal successors, (2632), 2124 states have internal predecessors, (2632), 1090 states have call successors, (1090), 277 states have call predecessors, (1090), 275 states have return successors, (1090), 1076 states have call predecessors, (1090), 1090 states have call successors, (1090) [2023-12-02 19:40:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4812 transitions. [2023-12-02 19:40:55,716 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4812 transitions. Word has length 295 [2023-12-02 19:40:55,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:55,717 INFO L495 AbstractCegarLoop]: Abstraction has 3459 states and 4812 transitions. [2023-12-02 19:40:55,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2023-12-02 19:40:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4812 transitions. [2023-12-02 19:40:55,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-02 19:40:55,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:55,722 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 12, 12, 12, 12, 12, 12, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:55,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 19:40:55,723 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 19:40:55,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:55,723 INFO L85 PathProgramCache]: Analyzing trace with hash -523980298, now seen corresponding path program 1 times [2023-12-02 19:40:55,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:55,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224654079] [2023-12-02 19:40:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:55,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2023-12-02 19:40:56,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:56,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224654079] [2023-12-02 19:40:56,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224654079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:40:56,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:40:56,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:40:56,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947089262] [2023-12-02 19:40:56,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:40:56,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:40:56,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:40:56,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:40:56,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:56,219 INFO L87 Difference]: Start difference. First operand 3459 states and 4812 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2023-12-02 19:40:57,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:40:57,566 INFO L93 Difference]: Finished difference Result 6828 states and 9541 transitions. [2023-12-02 19:40:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:40:57,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 339 [2023-12-02 19:40:57,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:40:57,576 INFO L225 Difference]: With dead ends: 6828 [2023-12-02 19:40:57,576 INFO L226 Difference]: Without dead ends: 3471 [2023-12-02 19:40:57,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:40:57,585 INFO L413 NwaCegarLoop]: 1376 mSDtfsCounter, 1 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:40:57,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2749 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 19:40:57,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3471 states. [2023-12-02 19:40:57,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3471 to 3463. [2023-12-02 19:40:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 2096 states have (on average 1.2576335877862594) internal successors, (2636), 2128 states have internal predecessors, (2636), 1090 states have call successors, (1090), 277 states have call predecessors, (1090), 275 states have return successors, (1090), 1076 states have call predecessors, (1090), 1090 states have call successors, (1090) [2023-12-02 19:40:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 4816 transitions. [2023-12-02 19:40:57,900 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 4816 transitions. Word has length 339 [2023-12-02 19:40:57,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:40:57,901 INFO L495 AbstractCegarLoop]: Abstraction has 3463 states and 4816 transitions. [2023-12-02 19:40:57,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2023-12-02 19:40:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 4816 transitions. [2023-12-02 19:40:57,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-12-02 19:40:57,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:40:57,906 INFO L195 NwaCegarLoop]: trace histogram [18, 15, 12, 12, 12, 12, 12, 12, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:40:57,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 19:40:57,907 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 19:40:57,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:40:57,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1487420190, now seen corresponding path program 1 times [2023-12-02 19:40:57,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:40:57,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250272228] [2023-12-02 19:40:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:57,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:40:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:58,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2023-12-02 19:40:58,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:40:58,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250272228] [2023-12-02 19:40:58,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250272228] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:40:58,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591696768] [2023-12-02 19:40:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:40:58,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:40:58,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:40:58,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:40:58,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c2f0bfd-10c3-4a81-880b-6c537fefb992/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:40:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:40:59,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 4544 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:40:59,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:40:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 106 proven. 1 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2023-12-02 19:40:59,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:40:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2023-12-02 19:40:59,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591696768] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:40:59,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [99323775] [2023-12-02 19:40:59,790 INFO L159 IcfgInterpreter]: Started Sifa with 177 locations of interest [2023-12-02 19:40:59,790 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:40:59,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:40:59,799 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:40:59,800 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:43:50,848 WARN L293 SmtUtils]: Spent 10.24s on a formula simplification that was a NOOP. DAG size: 4736 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:44:01,170 WARN L293 SmtUtils]: Spent 10.29s on a formula simplification that was a NOOP. DAG size: 4736 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:44:16,343 WARN L293 SmtUtils]: Spent 15.12s on a formula simplification. DAG size of input: 4737 DAG size of output: 4737 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:44:26,997 WARN L293 SmtUtils]: Spent 10.64s on a formula simplification that was a NOOP. DAG size: 4736 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:44:37,506 WARN L293 SmtUtils]: Spent 10.48s on a formula simplification that was a NOOP. DAG size: 4736 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:44:52,661 WARN L293 SmtUtils]: Spent 15.13s on a formula simplification. DAG size of input: 4737 DAG size of output: 4737 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:51:59,306 WARN L293 SmtUtils]: Spent 9.83s on a formula simplification that was a NOOP. DAG size: 4737 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:52:09,947 WARN L293 SmtUtils]: Spent 10.61s on a formula simplification that was a NOOP. DAG size: 4736 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:52:26,136 WARN L293 SmtUtils]: Spent 16.10s on a formula simplification. DAG size of input: 4737 DAG size of output: 4737 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:52:36,760 WARN L293 SmtUtils]: Spent 10.61s on a formula simplification that was a NOOP. DAG size: 4737 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:52:47,023 WARN L293 SmtUtils]: Spent 10.23s on a formula simplification that was a NOOP. DAG size: 4736 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:53:02,208 WARN L293 SmtUtils]: Spent 15.15s on a formula simplification. DAG size of input: 4737 DAG size of output: 4737 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)