./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/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_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/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_e88e2f9c-7765-488d-9608-98acf5efde0d/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 bf04605b927a140287b1c754ad26365df4778b673325ded7dfdba05deed83fbc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:04:32,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:04:32,879 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 19:04:32,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:04:32,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:04:32,909 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:04:32,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:04:32,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:04:32,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:04:32,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:04:32,912 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:04:32,913 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:04:32,913 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:04:32,914 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:04:32,914 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:04:32,915 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:04:32,915 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:04:32,916 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:04:32,916 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:04:32,917 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:04:32,917 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:04:32,922 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:04:32,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:04:32,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:04:32,923 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:04:32,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:04:32,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:04:32,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:04:32,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:04:32,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:04:32,926 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:04:32,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:04:32,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:04:32,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:04:32,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:04:32,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:04:32,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:04:32,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:04:32,928 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:04:32,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:04:32,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:04:32,929 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:04:32,929 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:04:32,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:04:32,929 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_e88e2f9c-7765-488d-9608-98acf5efde0d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf04605b927a140287b1c754ad26365df4778b673325ded7dfdba05deed83fbc [2023-12-02 19:04:33,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:04:33,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:04:33,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:04:33,185 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:04:33,185 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:04:33,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2023-12-02 19:04:35,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:04:36,470 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:04:36,470 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2023-12-02 19:04:36,517 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/data/46513e21b/aa54e91260664384aebbddc58cc44825/FLAGa693181f0 [2023-12-02 19:04:36,531 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/data/46513e21b/aa54e91260664384aebbddc58cc44825 [2023-12-02 19:04:36,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:04:36,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:04:36,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:04:36,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:04:36,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:04:36,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:04:36" (1/1) ... [2023-12-02 19:04:36,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c69818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:36, skipping insertion in model container [2023-12-02 19:04:36,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:04:36" (1/1) ... [2023-12-02 19:04:36,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:04:40,058 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422318,422331] [2023-12-02 19:04:40,063 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_e88e2f9c-7765-488d-9608-98acf5efde0d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422487,422500] [2023-12-02 19:04:40,063 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_e88e2f9c-7765-488d-9608-98acf5efde0d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422654,422667] [2023-12-02 19:04:40,064 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_e88e2f9c-7765-488d-9608-98acf5efde0d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422822,422835] [2023-12-02 19:04:40,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:04:40,133 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:04:40,240 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"); [5269] [2023-12-02 19:04:40,241 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)); [5276] [2023-12-02 19:04:40,242 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5283] [2023-12-02 19:04:40,244 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)); [5324-5325] [2023-12-02 19:04:40,244 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"); [5330-5332] [2023-12-02 19:04:40,249 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5493] [2023-12-02 19:04:40,249 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [5500] [2023-12-02 19:04:40,249 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inw %w1, %w0": "=a" (value): "Nd" (port)); [5508] [2023-12-02 19:04:40,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outl %0, %w1": : "a" (value), "Nd" (port)); [5515] [2023-12-02 19:04:40,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inl %w1, %0": "=a" (value): "Nd" (port)); [5523] [2023-12-02 19:04:40,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [5643-5644] [2023-12-02 19:04:40,259 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [5677-5678] [2023-12-02 19:04:40,261 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (103), "i" (12UL)); [5714-5715] [2023-12-02 19:04:40,262 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (115), "i" (12UL)); [5751-5752] [2023-12-02 19:04:40,270 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/netdevice.h"), "i" (502), "i" (12UL)); [6010-6011] [2023-12-02 19:04:40,271 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6017] [2023-12-02 19:04:40,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "m" (cpu_number)); [6292] [2023-12-02 19:04:40,277 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "m" (cpu_number)); [6295] [2023-12-02 19:04:40,277 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "m" (cpu_number)); [6298] [2023-12-02 19:04:40,277 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "m" (cpu_number)); [6301] [2023-12-02 19:04:40,278 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret_____0): "m" (cpu_number)); [6332] [2023-12-02 19:04:40,278 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret_____0): "m" (cpu_number)); [6335] [2023-12-02 19:04:40,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret_____0): "m" (cpu_number)); [6338] [2023-12-02 19:04:40,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret_____0): "m" (cpu_number)); [6341] [2023-12-02 19:04:40,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret_____1): "m" (cpu_number)); [6372] [2023-12-02 19:04:40,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret_____1): "m" (cpu_number)); [6375] [2023-12-02 19:04:40,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret_____1): "m" (cpu_number)); [6378] [2023-12-02 19:04:40,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret_____1): "m" (cpu_number)); [6381] [2023-12-02 19:04:40,281 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret_____2): "m" (cpu_number)); [6412] [2023-12-02 19:04:40,281 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret_____2): "m" (cpu_number)); [6415] [2023-12-02 19:04:40,281 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret_____2): "m" (cpu_number)); [6418] [2023-12-02 19:04:40,281 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret_____2): "m" (cpu_number)); [6421] [2023-12-02 19:04:40,309 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7189] [2023-12-02 19:04:40,327 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7703] [2023-12-02 19:04:40,328 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7726] [2023-12-02 19:04:40,329 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [7733] [2023-12-02 19:04:40,330 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7760] [2023-12-02 19:04:40,375 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8179] [2023-12-02 19:04:40,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9799] [2023-12-02 19:04:40,437 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [9864] [2023-12-02 19:04:40,438 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9874] [2023-12-02 19:04:40,438 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9886] [2023-12-02 19:04:40,440 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9908] [2023-12-02 19:04:40,448 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [10098] [2023-12-02 19:04:40,548 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_e88e2f9c-7765-488d-9608-98acf5efde0d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422318,422331] [2023-12-02 19:04:40,548 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_e88e2f9c-7765-488d-9608-98acf5efde0d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422487,422500] [2023-12-02 19:04:40,549 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_e88e2f9c-7765-488d-9608-98acf5efde0d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422654,422667] [2023-12-02 19:04:40,549 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_e88e2f9c-7765-488d-9608-98acf5efde0d/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i[422822,422835] [2023-12-02 19:04:40,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:04:40,822 WARN L675 CHandler]: The function __bad_size_call_parameter is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:04:40,822 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:04:40,830 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:04:40,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40 WrapperNode [2023-12-02 19:04:40,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:04:40,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:04:40,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:04:40,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:04:40,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40" (1/1) ... [2023-12-02 19:04:40,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40" (1/1) ... [2023-12-02 19:04:41,201 INFO L138 Inliner]: procedures = 559, calls = 2977, calls flagged for inlining = 295, calls inlined = 261, statements flattened = 8902 [2023-12-02 19:04:41,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:04:41,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:04:41,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:04:41,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:04:41,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40" (1/1) ... [2023-12-02 19:04:41,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40" (1/1) ... [2023-12-02 19:04:41,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40" (1/1) ... [2023-12-02 19:04:41,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40" (1/1) ... [2023-12-02 19:04:41,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40" (1/1) ... [2023-12-02 19:04:41,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40" (1/1) ... [2023-12-02 19:04:41,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40" (1/1) ... [2023-12-02 19:04:41,555 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40" (1/1) ... [2023-12-02 19:04:41,609 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:04:41,610 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:04:41,610 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:04:41,610 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:04:41,611 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40" (1/1) ... [2023-12-02 19:04:41,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:04:41,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:04:41,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:04:41,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:04:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2023-12-02 19:04:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2023-12-02 19:04:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 19:04:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 19:04:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-12-02 19:04:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-12-02 19:04:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-12-02 19:04:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-12-02 19:04:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 19:04:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 19:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-12-02 19:04:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-12-02 19:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 19:04:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-12-02 19:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-12-02 19:04:41,674 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-12-02 19:04:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 19:04:41,674 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 19:04:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_63 [2023-12-02 19:04:41,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_63 [2023-12-02 19:04:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_interrupt [2023-12-02 19:04:41,675 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_interrupt [2023-12-02 19:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-12-02 19:04:41,675 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-12-02 19:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-12-02 19:04:41,675 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-12-02 19:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2023-12-02 19:04:41,676 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2023-12-02 19:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 19:04:41,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 19:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-12-02 19:04:41,676 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-12-02 19:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-12-02 19:04:41,676 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-12-02 19:04:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 19:04:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 19:04:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-12-02 19:04:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-12-02 19:04:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:04:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_bcr [2023-12-02 19:04:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_bcr [2023-12-02 19:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-12-02 19:04:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-12-02 19:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-12-02 19:04:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-12-02 19:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-12-02 19:04:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-12-02 19:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 19:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pcnet32_cleanup_module_16_2 [2023-12-02 19:04:41,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pcnet32_cleanup_module_16_2 [2023-12-02 19:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-12-02 19:04:41,679 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-12-02 19:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2023-12-02 19:04:41,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2023-12-02 19:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 19:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 19:04:41,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 19:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_tx_ring [2023-12-02 19:04:41,680 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_tx_ring [2023-12-02 19:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-12-02 19:04:41,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-12-02 19:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-12-02 19:04:41,680 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-12-02 19:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_bcr [2023-12-02 19:04:41,681 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_bcr [2023-12-02 19:04:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-12-02 19:04:41,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-12-02 19:04:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-12-02 19:04:41,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-12-02 19:04:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-12-02 19:04:41,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-12-02 19:04:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-12-02 19:04:41,681 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-12-02 19:04:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-12-02 19:04:41,682 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-12-02 19:04:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_start [2023-12-02 19:04:41,682 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_start [2023-12-02 19:04:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2023-12-02 19:04:41,682 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2023-12-02 19:04:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~~u16~0 [2023-12-02 19:04:41,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~~u16~0 [2023-12-02 19:04:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 19:04:41,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-12-02 19:04:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:04:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-12-02 19:04:41,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-12-02 19:04:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-12-02 19:04:41,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-12-02 19:04:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2023-12-02 19:04:41,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2023-12-02 19:04:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-12-02 19:04:41,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-12-02 19:04:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2023-12-02 19:04:41,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2023-12-02 19:04:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_open [2023-12-02 19:04:41,684 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_open [2023-12-02 19:04:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:04:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2023-12-02 19:04:41,684 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2023-12-02 19:04:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 19:04:41,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 19:04:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-12-02 19:04:41,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-12-02 19:04:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:04:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-12-02 19:04:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 19:04:41,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-12-02 19:04:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_reset [2023-12-02 19:04:41,685 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_reset [2023-12-02 19:04:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_printk [2023-12-02 19:04:41,685 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_printk [2023-12-02 19:04:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_pcnet32_private [2023-12-02 19:04:41,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_pcnet32_private [2023-12-02 19:04:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-12-02 19:04:41,686 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-12-02 19:04:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_restart [2023-12-02 19:04:41,686 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_restart [2023-12-02 19:04:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-12-02 19:04:41,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-12-02 19:04:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2023-12-02 19:04:41,686 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2023-12-02 19:04:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-12-02 19:04:41,687 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-12-02 19:04:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-12-02 19:04:41,687 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-12-02 19:04:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-12-02 19:04:41,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-12-02 19:04:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_csr [2023-12-02 19:04:41,687 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_csr [2023-12-02 19:04:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2023-12-02 19:04:41,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2023-12-02 19:04:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-12-02 19:04:41,688 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-12-02 19:04:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_reset [2023-12-02 19:04:41,688 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_reset [2023-12-02 19:04:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2023-12-02 19:04:41,688 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2023-12-02 19:04:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:04:41,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:04:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-12-02 19:04:41,688 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-12-02 19:04:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 19:04:41,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 19:04:41,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 19:04:41,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 19:04:41,689 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_pm_resume [2023-12-02 19:04:41,689 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_pm_resume [2023-12-02 19:04:41,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 19:04:41,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-12-02 19:04:41,689 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_check_media [2023-12-02 19:04:41,689 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_check_media [2023-12-02 19:04:41,689 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_get_regs_len [2023-12-02 19:04:41,689 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_get_regs_len [2023-12-02 19:04:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2023-12-02 19:04:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-12-02 19:04:41,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-12-02 19:04:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_poll_controller [2023-12-02 19:04:41,690 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_poll_controller [2023-12-02 19:04:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_free_ring [2023-12-02 19:04:41,690 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_free_ring [2023-12-02 19:04:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-12-02 19:04:41,690 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-12-02 19:04:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 19:04:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 19:04:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2023-12-02 19:04:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2023-12-02 19:04:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-12-02 19:04:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-12-02 19:04:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-12-02 19:04:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-12-02 19:04:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2023-12-02 19:04:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2023-12-02 19:04:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_purge_rx_ring [2023-12-02 19:04:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_purge_rx_ring [2023-12-02 19:04:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_write_csr [2023-12-02 19:04:41,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_write_csr [2023-12-02 19:04:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_tx_timeout [2023-12-02 19:04:41,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_tx_timeout [2023-12-02 19:04:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-12-02 19:04:41,692 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-12-02 19:04:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:04:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_netif_stop [2023-12-02 19:04:41,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_netif_stop [2023-12-02 19:04:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-12-02 19:04:41,692 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-12-02 19:04:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:04:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_pcnet32_private [2023-12-02 19:04:41,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_pcnet32_private [2023-12-02 19:04:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 19:04:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_csr [2023-12-02 19:04:41,693 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_csr [2023-12-02 19:04:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 19:04:41,693 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 19:04:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_set_multicast_list [2023-12-02 19:04:41,693 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_set_multicast_list [2023-12-02 19:04:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-12-02 19:04:41,694 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-12-02 19:04:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-12-02 19:04:41,694 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-12-02 19:04:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure mii_link_ok [2023-12-02 19:04:41,694 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_link_ok [2023-12-02 19:04:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 19:04:41,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 19:04:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_probe1 [2023-12-02 19:04:41,694 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_probe1 [2023-12-02 19:04:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2023-12-02 19:04:41,694 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2023-12-02 19:04:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-12-02 19:04:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-12-02 19:04:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_remove_one [2023-12-02 19:04:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_remove_one [2023-12-02 19:04:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_sset [2023-12-02 19:04:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_sset [2023-12-02 19:04:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~~u16~0~TO~VOID [2023-12-02 19:04:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~~u16~0~TO~VOID [2023-12-02 19:04:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_dwio_read_bcr [2023-12-02 19:04:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_dwio_read_bcr [2023-12-02 19:04:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-12-02 19:04:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-12-02 19:04:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-12-02 19:04:41,696 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-12-02 19:04:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-12-02 19:04:41,696 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-12-02 19:04:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_read_bcr [2023-12-02 19:04:41,696 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_read_bcr [2023-12-02 19:04:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-12-02 19:04:41,696 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-12-02 19:04:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_init_ring [2023-12-02 19:04:41,696 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_init_ring [2023-12-02 19:04:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_close [2023-12-02 19:04:41,697 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_close [2023-12-02 19:04:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-12-02 19:04:41,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-12-02 19:04:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 19:04:41,697 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 19:04:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:04:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_suspend [2023-12-02 19:04:41,697 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_suspend [2023-12-02 19:04:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 19:04:41,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 19:04:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-12-02 19:04:41,698 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-12-02 19:04:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2023-12-02 19:04:41,698 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2023-12-02 19:04:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_wio_write_csr [2023-12-02 19:04:41,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_wio_write_csr [2023-12-02 19:04:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_load_multicast [2023-12-02 19:04:41,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_load_multicast [2023-12-02 19:04:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2023-12-02 19:04:41,698 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2023-12-02 19:04:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure pcnet32_nway_reset [2023-12-02 19:04:41,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pcnet32_nway_reset [2023-12-02 19:04:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 19:04:41,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 19:04:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2023-12-02 19:04:41,699 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2023-12-02 19:04:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-12-02 19:04:41,699 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-12-02 19:04:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-12-02 19:04:41,699 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-12-02 19:04:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2023-12-02 19:04:41,699 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2023-12-02 19:04:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:04:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-12-02 19:04:41,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-12-02 19:04:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2023-12-02 19:04:41,700 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2023-12-02 19:04:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 19:04:41,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 19:04:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-12-02 19:04:41,700 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-12-02 19:04:42,717 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:04:42,722 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:04:42,921 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 19:04:51,726 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-12-02 19:04:51,895 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:04:54,706 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:04:54,706 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-02 19:04:54,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:04:54 BoogieIcfgContainer [2023-12-02 19:04:54,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:04:54,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:04:54,711 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:04:54,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:04:54,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:04:36" (1/3) ... [2023-12-02 19:04:54,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505c9bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:04:54, skipping insertion in model container [2023-12-02 19:04:54,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:04:40" (2/3) ... [2023-12-02 19:04:54,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505c9bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:04:54, skipping insertion in model container [2023-12-02 19:04:54,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:04:54" (3/3) ... [2023-12-02 19:04:54,717 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-amd-pcnet32.cil.i [2023-12-02 19:04:54,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:04:54,736 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-02 19:04:54,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:04:54,832 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;@3704d2d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:04:54,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 19:04:54,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 2246 states, 1354 states have (on average 1.3190546528803544) internal successors, (1786), 1393 states have internal predecessors, (1786), 765 states have call successors, (765), 127 states have call predecessors, (765), 126 states have return successors, (757), 745 states have call predecessors, (757), 757 states have call successors, (757) [2023-12-02 19:04:54,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-02 19:04:54,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:04:54,869 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:54,869 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 19:04:54,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:04:54,874 INFO L85 PathProgramCache]: Analyzing trace with hash 670687905, now seen corresponding path program 1 times [2023-12-02 19:04:54,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:04:54,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074656318] [2023-12-02 19:04:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:04:54,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:04:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:04:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-12-02 19:04:55,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:04:55,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074656318] [2023-12-02 19:04:55,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074656318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:04:55,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:04:55,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:04:55,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784990394] [2023-12-02 19:04:55,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:04:55,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:04:55,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:04:55,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:04:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:04:55,635 INFO L87 Difference]: Start difference. First operand has 2246 states, 1354 states have (on average 1.3190546528803544) internal successors, (1786), 1393 states have internal predecessors, (1786), 765 states have call successors, (765), 127 states have call predecessors, (765), 126 states have return successors, (757), 745 states have call predecessors, (757), 757 states have call successors, (757) 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-02 19:04:58,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:02,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:04,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:06,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:07,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:05:07,069 INFO L93 Difference]: Finished difference Result 6550 states and 9820 transitions. [2023-12-02 19:05:07,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:05:07,071 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 152 [2023-12-02 19:05:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:05:07,118 INFO L225 Difference]: With dead ends: 6550 [2023-12-02 19:05:07,119 INFO L226 Difference]: Without dead ends: 4319 [2023-12-02 19:05:07,139 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 19:05:07,142 INFO L413 NwaCegarLoop]: 2823 mSDtfsCounter, 3141 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3141 SdHoareTripleChecker+Valid, 5568 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:05:07,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3141 Valid, 5568 Invalid, 971 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 960 Invalid, 4 Unknown, 0 Unchecked, 11.0s Time] [2023-12-02 19:05:07,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2023-12-02 19:05:07,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 4315. [2023-12-02 19:05:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4315 states, 2616 states have (on average 1.3153669724770642) internal successors, (3441), 2687 states have internal predecessors, (3441), 1448 states have call successors, (1448), 249 states have call predecessors, (1448), 248 states have return successors, (1444), 1421 states have call predecessors, (1444), 1444 states have call successors, (1444) [2023-12-02 19:05:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 6333 transitions. [2023-12-02 19:05:07,450 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 6333 transitions. Word has length 152 [2023-12-02 19:05:07,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:05:07,451 INFO L495 AbstractCegarLoop]: Abstraction has 4315 states and 6333 transitions. [2023-12-02 19:05:07,452 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-02 19:05:07,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 6333 transitions. [2023-12-02 19:05:07,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-02 19:05:07,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:05:07,458 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:07,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:05:07,458 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 19:05:07,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:05:07,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2104226527, now seen corresponding path program 1 times [2023-12-02 19:05:07,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:05:07,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538077241] [2023-12-02 19:05:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:07,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:05:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:05:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-12-02 19:05:07,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:05:07,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538077241] [2023-12-02 19:05:07,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538077241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:05:07,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:05:07,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:05:07,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278381310] [2023-12-02 19:05:07,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:05:07,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:05:07,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:05:07,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:05:07,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:05:07,857 INFO L87 Difference]: Start difference. First operand 4315 states and 6333 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-02 19:05:12,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:15,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:17,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:17,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:05:17,693 INFO L93 Difference]: Finished difference Result 12803 states and 18830 transitions. [2023-12-02 19:05:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:05:17,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 155 [2023-12-02 19:05:17,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:05:17,752 INFO L225 Difference]: With dead ends: 12803 [2023-12-02 19:05:17,753 INFO L226 Difference]: Without dead ends: 8515 [2023-12-02 19:05:17,770 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 19:05:17,771 INFO L413 NwaCegarLoop]: 3000 mSDtfsCounter, 3213 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3213 SdHoareTripleChecker+Valid, 5727 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:05:17,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3213 Valid, 5727 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 995 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2023-12-02 19:05:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8515 states. [2023-12-02 19:05:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8515 to 8485. [2023-12-02 19:05:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8485 states, 5167 states have (on average 1.3179794851945035) internal successors, (6810), 5316 states have internal predecessors, (6810), 2826 states have call successors, (2826), 496 states have call predecessors, (2826), 489 states have return successors, (2856), 2756 states have call predecessors, (2856), 2822 states have call successors, (2856) [2023-12-02 19:05:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8485 states to 8485 states and 12492 transitions. [2023-12-02 19:05:18,294 INFO L78 Accepts]: Start accepts. Automaton has 8485 states and 12492 transitions. Word has length 155 [2023-12-02 19:05:18,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:05:18,295 INFO L495 AbstractCegarLoop]: Abstraction has 8485 states and 12492 transitions. [2023-12-02 19:05:18,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-02 19:05:18,295 INFO L276 IsEmpty]: Start isEmpty. Operand 8485 states and 12492 transitions. [2023-12-02 19:05:18,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-02 19:05:18,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:05:18,299 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:18,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:05:18,299 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 19:05:18,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:05:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash 179686503, now seen corresponding path program 1 times [2023-12-02 19:05:18,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:05:18,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732862614] [2023-12-02 19:05:18,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:18,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:05:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:05:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-12-02 19:05:18,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:05:18,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732862614] [2023-12-02 19:05:18,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732862614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:05:18,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:05:18,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:05:18,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720596234] [2023-12-02 19:05:18,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:05:18,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:05:18,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:05:18,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:05:18,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:05:18,557 INFO L87 Difference]: Start difference. First operand 8485 states and 12492 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 19:05:21,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:25,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:27,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:05:28,201 INFO L93 Difference]: Finished difference Result 23279 states and 34055 transitions. [2023-12-02 19:05:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:05:28,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 153 [2023-12-02 19:05:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:05:28,327 INFO L225 Difference]: With dead ends: 23279 [2023-12-02 19:05:28,327 INFO L226 Difference]: Without dead ends: 14821 [2023-12-02 19:05:28,371 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 19:05:28,372 INFO L413 NwaCegarLoop]: 2795 mSDtfsCounter, 2388 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 5504 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:05:28,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2388 Valid, 5504 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1006 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2023-12-02 19:05:28,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14821 states. [2023-12-02 19:05:29,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14821 to 14789. [2023-12-02 19:05:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14789 states, 8981 states have (on average 1.3083175592918384) internal successors, (11750), 9230 states have internal predecessors, (11750), 4854 states have call successors, (4854), 966 states have call predecessors, (4854), 951 states have return successors, (4938), 4710 states have call predecessors, (4938), 4850 states have call successors, (4938) [2023-12-02 19:05:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14789 states to 14789 states and 21542 transitions. [2023-12-02 19:05:29,384 INFO L78 Accepts]: Start accepts. Automaton has 14789 states and 21542 transitions. Word has length 153 [2023-12-02 19:05:29,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:05:29,385 INFO L495 AbstractCegarLoop]: Abstraction has 14789 states and 21542 transitions. [2023-12-02 19:05:29,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 19:05:29,386 INFO L276 IsEmpty]: Start isEmpty. Operand 14789 states and 21542 transitions. [2023-12-02 19:05:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-02 19:05:29,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:05:29,389 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:29,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:05:29,389 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 19:05:29,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:05:29,390 INFO L85 PathProgramCache]: Analyzing trace with hash -45512461, now seen corresponding path program 1 times [2023-12-02 19:05:29,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:05:29,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648043621] [2023-12-02 19:05:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:29,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:05:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:05:29,792 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-12-02 19:05:29,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:05:29,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648043621] [2023-12-02 19:05:29,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648043621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:05:29,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:05:29,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:05:29,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525508200] [2023-12-02 19:05:29,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:05:29,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:05:29,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:05:29,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:05:29,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:05:29,795 INFO L87 Difference]: Start difference. First operand 14789 states and 21542 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-02 19:05:32,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:34,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:36,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:40,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:05:40,016 INFO L93 Difference]: Finished difference Result 33491 states and 48244 transitions. [2023-12-02 19:05:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:05:40,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 156 [2023-12-02 19:05:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:05:40,093 INFO L225 Difference]: With dead ends: 33491 [2023-12-02 19:05:40,093 INFO L226 Difference]: Without dead ends: 18729 [2023-12-02 19:05:40,134 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 19:05:40,135 INFO L413 NwaCegarLoop]: 4776 mSDtfsCounter, 2941 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 17 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2941 SdHoareTripleChecker+Valid, 7528 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:05:40,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2941 Valid, 7528 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1344 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2023-12-02 19:05:40,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18729 states. [2023-12-02 19:05:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18729 to 18695. [2023-12-02 19:05:40,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18695 states, 11274 states have (on average 1.2935071846726982) internal successors, (14583), 11566 states have internal predecessors, (14583), 5979 states have call successors, (5979), 1458 states have call predecessors, (5979), 1439 states have return successors, (6062), 5783 states have call predecessors, (6062), 5975 states have call successors, (6062) [2023-12-02 19:05:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18695 states to 18695 states and 26624 transitions. [2023-12-02 19:05:41,035 INFO L78 Accepts]: Start accepts. Automaton has 18695 states and 26624 transitions. Word has length 156 [2023-12-02 19:05:41,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:05:41,036 INFO L495 AbstractCegarLoop]: Abstraction has 18695 states and 26624 transitions. [2023-12-02 19:05:41,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-02 19:05:41,037 INFO L276 IsEmpty]: Start isEmpty. Operand 18695 states and 26624 transitions. [2023-12-02 19:05:41,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-02 19:05:41,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:05:41,043 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1] [2023-12-02 19:05:41,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:05:41,044 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 19:05:41,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:05:41,045 INFO L85 PathProgramCache]: Analyzing trace with hash -108467066, now seen corresponding path program 1 times [2023-12-02 19:05:41,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:05:41,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956192303] [2023-12-02 19:05:41,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:41,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:05:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:05:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2023-12-02 19:05:41,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:05:41,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956192303] [2023-12-02 19:05:41,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956192303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:05:41,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:05:41,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:05:41,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320036456] [2023-12-02 19:05:41,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:05:41,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:05:41,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:05:41,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:05:41,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:05:41,557 INFO L87 Difference]: Start difference. First operand 18695 states and 26624 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 19:05:44,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:46,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:48,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:50,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:52,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:05:52,842 INFO L93 Difference]: Finished difference Result 18827 states and 26754 transitions. [2023-12-02 19:05:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:05:52,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 202 [2023-12-02 19:05:52,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:05:52,914 INFO L225 Difference]: With dead ends: 18827 [2023-12-02 19:05:52,914 INFO L226 Difference]: Without dead ends: 18825 [2023-12-02 19:05:52,921 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 19:05:52,922 INFO L413 NwaCegarLoop]: 2786 mSDtfsCounter, 3190 mSDsluCounter, 5586 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3202 SdHoareTripleChecker+Valid, 8372 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:05:52,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3202 Valid, 8372 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1460 Invalid, 3 Unknown, 0 Unchecked, 10.7s Time] [2023-12-02 19:05:52,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18825 states. [2023-12-02 19:05:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18825 to 18823. [2023-12-02 19:05:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18823 states, 11349 states have (on average 1.2926249008723236) internal successors, (14670), 11645 states have internal predecessors, (14670), 5999 states have call successors, (5999), 1491 states have call predecessors, (5999), 1472 states have return successors, (6082), 5803 states have call predecessors, (6082), 5995 states have call successors, (6082) [2023-12-02 19:05:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18823 states to 18823 states and 26751 transitions. [2023-12-02 19:05:53,855 INFO L78 Accepts]: Start accepts. Automaton has 18823 states and 26751 transitions. Word has length 202 [2023-12-02 19:05:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:05:53,855 INFO L495 AbstractCegarLoop]: Abstraction has 18823 states and 26751 transitions. [2023-12-02 19:05:53,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 19:05:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 18823 states and 26751 transitions. [2023-12-02 19:05:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-02 19:05:53,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:05:53,860 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:05:53,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:05:53,861 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 19:05:53,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:05:53,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1814755394, now seen corresponding path program 1 times [2023-12-02 19:05:53,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:05:53,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817605198] [2023-12-02 19:05:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:53,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:05:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:05:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2023-12-02 19:05:54,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:05:54,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817605198] [2023-12-02 19:05:54,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817605198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:05:54,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:05:54,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:05:54,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389853235] [2023-12-02 19:05:54,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:05:54,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:05:54,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:05:54,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:05:54,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:05:54,327 INFO L87 Difference]: Start difference. First operand 18823 states and 26751 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 19:05:57,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:05:59,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:01,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:04,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:06:04,287 INFO L93 Difference]: Finished difference Result 18829 states and 26756 transitions. [2023-12-02 19:06:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:06:04,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 206 [2023-12-02 19:06:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:06:04,347 INFO L225 Difference]: With dead ends: 18829 [2023-12-02 19:06:04,347 INFO L226 Difference]: Without dead ends: 18827 [2023-12-02 19:06:04,378 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 19:06:04,378 INFO L413 NwaCegarLoop]: 2791 mSDtfsCounter, 3198 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3209 SdHoareTripleChecker+Valid, 8352 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:06:04,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3209 Valid, 8352 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1440 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2023-12-02 19:06:04,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18827 states. [2023-12-02 19:06:05,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18827 to 18827. [2023-12-02 19:06:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18827 states, 11352 states have (on average 1.2925475687103594) internal successors, (14673), 11648 states have internal predecessors, (14673), 5999 states have call successors, (5999), 1492 states have call predecessors, (5999), 1473 states have return successors, (6082), 5803 states have call predecessors, (6082), 5995 states have call successors, (6082) [2023-12-02 19:06:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18827 states to 18827 states and 26754 transitions. [2023-12-02 19:06:05,384 INFO L78 Accepts]: Start accepts. Automaton has 18827 states and 26754 transitions. Word has length 206 [2023-12-02 19:06:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:06:05,385 INFO L495 AbstractCegarLoop]: Abstraction has 18827 states and 26754 transitions. [2023-12-02 19:06:05,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 19:06:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 18827 states and 26754 transitions. [2023-12-02 19:06:05,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-02 19:06:05,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:06:05,394 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 3, 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] [2023-12-02 19:06:05,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:06:05,394 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 19:06:05,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:06:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1807855994, now seen corresponding path program 1 times [2023-12-02 19:06:05,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:06:05,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505785003] [2023-12-02 19:06:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:06:05,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:06:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:06:06,045 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2023-12-02 19:06:06,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:06:06,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505785003] [2023-12-02 19:06:06,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505785003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:06:06,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:06:06,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:06:06,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544871011] [2023-12-02 19:06:06,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:06:06,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:06:06,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:06:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:06:06,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:06:06,047 INFO L87 Difference]: Start difference. First operand 18827 states and 26754 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 19:06:09,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:11,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:13,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:15,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:06:15,728 INFO L93 Difference]: Finished difference Result 18833 states and 26759 transitions. [2023-12-02 19:06:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:06:15,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 212 [2023-12-02 19:06:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:06:15,782 INFO L225 Difference]: With dead ends: 18833 [2023-12-02 19:06:15,782 INFO L226 Difference]: Without dead ends: 18831 [2023-12-02 19:06:15,793 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 19:06:15,794 INFO L413 NwaCegarLoop]: 2791 mSDtfsCounter, 3197 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3207 SdHoareTripleChecker+Valid, 8352 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:06:15,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3207 Valid, 8352 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1440 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2023-12-02 19:06:15,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18831 states. [2023-12-02 19:06:16,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18831 to 18831. [2023-12-02 19:06:16,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18831 states, 11355 states have (on average 1.2924702774108323) internal successors, (14676), 11651 states have internal predecessors, (14676), 5999 states have call successors, (5999), 1493 states have call predecessors, (5999), 1474 states have return successors, (6082), 5803 states have call predecessors, (6082), 5995 states have call successors, (6082) [2023-12-02 19:06:16,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18831 states to 18831 states and 26757 transitions. [2023-12-02 19:06:16,718 INFO L78 Accepts]: Start accepts. Automaton has 18831 states and 26757 transitions. Word has length 212 [2023-12-02 19:06:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:06:16,718 INFO L495 AbstractCegarLoop]: Abstraction has 18831 states and 26757 transitions. [2023-12-02 19:06:16,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 19:06:16,718 INFO L276 IsEmpty]: Start isEmpty. Operand 18831 states and 26757 transitions. [2023-12-02 19:06:16,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-02 19:06:16,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:06:16,722 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:06:16,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 19:06:16,722 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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 19:06:16,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:06:16,723 INFO L85 PathProgramCache]: Analyzing trace with hash -757950766, now seen corresponding path program 1 times [2023-12-02 19:06:16,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:06:16,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280621459] [2023-12-02 19:06:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:06:16,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:06:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:06:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2023-12-02 19:06:17,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:06:17,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280621459] [2023-12-02 19:06:17,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280621459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:06:17,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:06:17,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:06:17,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255119023] [2023-12-02 19:06:17,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:06:17,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:06:17,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:06:17,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:06:17,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:06:17,062 INFO L87 Difference]: Start difference. First operand 18831 states and 26757 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 19:06:19,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:22,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:24,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:26,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:28,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:06:28,936 INFO L93 Difference]: Finished difference Result 44966 states and 63785 transitions. [2023-12-02 19:06:28,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:06:28,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 211 [2023-12-02 19:06:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:06:29,002 INFO L225 Difference]: With dead ends: 44966 [2023-12-02 19:06:29,002 INFO L226 Difference]: Without dead ends: 26359 [2023-12-02 19:06:29,048 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 19:06:29,049 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 2936 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2936 SdHoareTripleChecker+Valid, 6836 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:06:29,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2936 Valid, 6836 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1233 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2023-12-02 19:06:29,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26359 states. [2023-12-02 19:06:30,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26359 to 26313. [2023-12-02 19:06:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26313 states, 15839 states have (on average 1.290990592840457) internal successors, (20448), 16260 states have internal predecessors, (20448), 8346 states have call successors, (8346), 2153 states have call predecessors, (8346), 2125 states have return successors, (8461), 8064 states have call predecessors, (8461), 8342 states have call successors, (8461) [2023-12-02 19:06:30,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26313 states to 26313 states and 37255 transitions. [2023-12-02 19:06:30,350 INFO L78 Accepts]: Start accepts. Automaton has 26313 states and 37255 transitions. Word has length 211 [2023-12-02 19:06:30,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:06:30,350 INFO L495 AbstractCegarLoop]: Abstraction has 26313 states and 37255 transitions. [2023-12-02 19:06:30,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-02 19:06:30,350 INFO L276 IsEmpty]: Start isEmpty. Operand 26313 states and 37255 transitions. [2023-12-02 19:06:30,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-02 19:06:30,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:06:30,355 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:06:30,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 19:06:30,356 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 19:06:30,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:06:30,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2063271501, now seen corresponding path program 1 times [2023-12-02 19:06:30,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:06:30,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185818156] [2023-12-02 19:06:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:06:30,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:06:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:06:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-12-02 19:06:30,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:06:30,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185818156] [2023-12-02 19:06:30,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185818156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:06:30,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:06:30,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:06:30,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726579321] [2023-12-02 19:06:30,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:06:30,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:06:30,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:06:30,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:06:30,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:06:30,883 INFO L87 Difference]: Start difference. First operand 26313 states and 37255 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 19:06:33,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:35,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:37,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:06:41,647 INFO L93 Difference]: Finished difference Result 26319 states and 37260 transitions. [2023-12-02 19:06:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:06:41,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 218 [2023-12-02 19:06:41,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:06:41,792 INFO L225 Difference]: With dead ends: 26319 [2023-12-02 19:06:41,792 INFO L226 Difference]: Without dead ends: 26317 [2023-12-02 19:06:41,798 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 19:06:41,798 INFO L413 NwaCegarLoop]: 2791 mSDtfsCounter, 3197 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3206 SdHoareTripleChecker+Valid, 8352 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:06:41,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3206 Valid, 8352 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1440 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2023-12-02 19:06:41,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26317 states. [2023-12-02 19:06:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26317 to 26317. [2023-12-02 19:06:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26317 states, 15842 states have (on average 1.2909354879434416) internal successors, (20451), 16263 states have internal predecessors, (20451), 8346 states have call successors, (8346), 2154 states have call predecessors, (8346), 2126 states have return successors, (8461), 8064 states have call predecessors, (8461), 8342 states have call successors, (8461) [2023-12-02 19:06:43,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26317 states to 26317 states and 37258 transitions. [2023-12-02 19:06:43,072 INFO L78 Accepts]: Start accepts. Automaton has 26317 states and 37258 transitions. Word has length 218 [2023-12-02 19:06:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:06:43,073 INFO L495 AbstractCegarLoop]: Abstraction has 26317 states and 37258 transitions. [2023-12-02 19:06:43,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 19:06:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 26317 states and 37258 transitions. [2023-12-02 19:06:43,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-02 19:06:43,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:06:43,077 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:06:43,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 19:06:43,077 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 19:06:43,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:06:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1080893306, now seen corresponding path program 1 times [2023-12-02 19:06:43,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:06:43,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980244946] [2023-12-02 19:06:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:06:43,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:06:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:06:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2023-12-02 19:06:43,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:06:43,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980244946] [2023-12-02 19:06:43,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980244946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:06:43,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:06:43,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:06:43,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346622394] [2023-12-02 19:06:43,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:06:43,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:06:43,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:06:43,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:06:43,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:06:43,438 INFO L87 Difference]: Start difference. First operand 26317 states and 37258 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 19:06:46,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:48,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:50,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:06:54,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:06:54,705 INFO L93 Difference]: Finished difference Result 26323 states and 37263 transitions. [2023-12-02 19:06:54,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:06:54,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 222 [2023-12-02 19:06:54,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:06:54,779 INFO L225 Difference]: With dead ends: 26323 [2023-12-02 19:06:54,779 INFO L226 Difference]: Without dead ends: 26321 [2023-12-02 19:06:54,789 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 19:06:54,790 INFO L413 NwaCegarLoop]: 2791 mSDtfsCounter, 3197 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 8352 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:06:54,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3205 Valid, 8352 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1440 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2023-12-02 19:06:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26321 states. [2023-12-02 19:06:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26321 to 26321. [2023-12-02 19:06:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26321 states, 15845 states have (on average 1.2908804039129063) internal successors, (20454), 16266 states have internal predecessors, (20454), 8346 states have call successors, (8346), 2155 states have call predecessors, (8346), 2127 states have return successors, (8461), 8064 states have call predecessors, (8461), 8342 states have call successors, (8461) [2023-12-02 19:06:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26321 states to 26321 states and 37261 transitions. [2023-12-02 19:06:56,289 INFO L78 Accepts]: Start accepts. Automaton has 26321 states and 37261 transitions. Word has length 222 [2023-12-02 19:06:56,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:06:56,290 INFO L495 AbstractCegarLoop]: Abstraction has 26321 states and 37261 transitions. [2023-12-02 19:06:56,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 19:06:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 26321 states and 37261 transitions. [2023-12-02 19:06:56,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-02 19:06:56,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:06:56,296 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:06:56,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 19:06:56,296 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 19:06:56,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:06:56,297 INFO L85 PathProgramCache]: Analyzing trace with hash -164887120, now seen corresponding path program 1 times [2023-12-02 19:06:56,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:06:56,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044996306] [2023-12-02 19:06:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:06:56,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:06:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:06:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2023-12-02 19:06:56,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:06:56,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044996306] [2023-12-02 19:06:56,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044996306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:06:56,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:06:56,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:06:56,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662708905] [2023-12-02 19:06:56,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:06:56,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:06:56,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:06:56,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:06:56,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:06:56,805 INFO L87 Difference]: Start difference. First operand 26321 states and 37261 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 19:06:59,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:01,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:03,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:07:07,718 INFO L93 Difference]: Finished difference Result 26327 states and 37266 transitions. [2023-12-02 19:07:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:07:07,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 227 [2023-12-02 19:07:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:07:07,788 INFO L225 Difference]: With dead ends: 26327 [2023-12-02 19:07:07,788 INFO L226 Difference]: Without dead ends: 26325 [2023-12-02 19:07:07,799 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 19:07:07,800 INFO L413 NwaCegarLoop]: 2791 mSDtfsCounter, 3197 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3204 SdHoareTripleChecker+Valid, 8352 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:07:07,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3204 Valid, 8352 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1440 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2023-12-02 19:07:07,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26325 states. [2023-12-02 19:07:09,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26325 to 26325. [2023-12-02 19:07:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26325 states, 15848 states have (on average 1.2908253407370016) internal successors, (20457), 16269 states have internal predecessors, (20457), 8346 states have call successors, (8346), 2156 states have call predecessors, (8346), 2128 states have return successors, (8461), 8064 states have call predecessors, (8461), 8342 states have call successors, (8461) [2023-12-02 19:07:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26325 states to 26325 states and 37264 transitions. [2023-12-02 19:07:09,336 INFO L78 Accepts]: Start accepts. Automaton has 26325 states and 37264 transitions. Word has length 227 [2023-12-02 19:07:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:07:09,337 INFO L495 AbstractCegarLoop]: Abstraction has 26325 states and 37264 transitions. [2023-12-02 19:07:09,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 19:07:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 26325 states and 37264 transitions. [2023-12-02 19:07:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-02 19:07:09,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:07:09,341 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:07:09,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 19:07:09,341 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 19:07:09,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:07:09,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1649058438, now seen corresponding path program 1 times [2023-12-02 19:07:09,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:07:09,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172297773] [2023-12-02 19:07:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:07:09,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:07:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:07:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2023-12-02 19:07:09,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:07:09,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172297773] [2023-12-02 19:07:09,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172297773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:07:09,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:07:09,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:07:09,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761051541] [2023-12-02 19:07:09,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:07:09,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:07:09,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:07:09,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:07:09,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:07:09,816 INFO L87 Difference]: Start difference. First operand 26325 states and 37264 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 19:07:12,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:14,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:16,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:07:20,721 INFO L93 Difference]: Finished difference Result 26331 states and 37269 transitions. [2023-12-02 19:07:20,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:07:20,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 232 [2023-12-02 19:07:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:07:20,790 INFO L225 Difference]: With dead ends: 26331 [2023-12-02 19:07:20,790 INFO L226 Difference]: Without dead ends: 26329 [2023-12-02 19:07:20,799 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 19:07:20,800 INFO L413 NwaCegarLoop]: 2791 mSDtfsCounter, 3197 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3203 SdHoareTripleChecker+Valid, 8352 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:07:20,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3203 Valid, 8352 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1440 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2023-12-02 19:07:20,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26329 states. [2023-12-02 19:07:22,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26329 to 26329. [2023-12-02 19:07:22,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26329 states, 15851 states have (on average 1.2907702984038862) internal successors, (20460), 16272 states have internal predecessors, (20460), 8346 states have call successors, (8346), 2157 states have call predecessors, (8346), 2129 states have return successors, (8461), 8064 states have call predecessors, (8461), 8342 states have call successors, (8461) [2023-12-02 19:07:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26329 states to 26329 states and 37267 transitions. [2023-12-02 19:07:22,397 INFO L78 Accepts]: Start accepts. Automaton has 26329 states and 37267 transitions. Word has length 232 [2023-12-02 19:07:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:07:22,398 INFO L495 AbstractCegarLoop]: Abstraction has 26329 states and 37267 transitions. [2023-12-02 19:07:22,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 19:07:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 26329 states and 37267 transitions. [2023-12-02 19:07:22,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-02 19:07:22,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:07:22,402 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:07:22,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 19:07:22,402 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 19:07:22,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:07:22,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1463931838, now seen corresponding path program 1 times [2023-12-02 19:07:22,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:07:22,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719176668] [2023-12-02 19:07:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:07:22,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:07:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:07:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2023-12-02 19:07:22,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:07:22,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719176668] [2023-12-02 19:07:22,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719176668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:07:22,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:07:22,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:07:22,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089909174] [2023-12-02 19:07:22,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:07:22,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:07:22,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:07:22,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:07:22,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:07:22,829 INFO L87 Difference]: Start difference. First operand 26329 states and 37267 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 19:07:25,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:27,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:29,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:34,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:07:34,001 INFO L93 Difference]: Finished difference Result 29187 states and 40399 transitions. [2023-12-02 19:07:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:07:34,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 236 [2023-12-02 19:07:34,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:07:34,074 INFO L225 Difference]: With dead ends: 29187 [2023-12-02 19:07:34,075 INFO L226 Difference]: Without dead ends: 29185 [2023-12-02 19:07:34,086 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 19:07:34,086 INFO L413 NwaCegarLoop]: 2822 mSDtfsCounter, 1966 mSDsluCounter, 6896 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 9718 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:07:34,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 9718 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1659 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2023-12-02 19:07:34,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29185 states. [2023-12-02 19:07:35,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29185 to 29183. [2023-12-02 19:07:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29183 states, 17265 states have (on average 1.2761656530553143) internal successors, (22033), 17749 states have internal predecessors, (22033), 9124 states have call successors, (9124), 2819 states have call predecessors, (9124), 2791 states have return successors, (9239), 8785 states have call predecessors, (9239), 9120 states have call successors, (9239) [2023-12-02 19:07:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29183 states to 29183 states and 40396 transitions. [2023-12-02 19:07:35,935 INFO L78 Accepts]: Start accepts. Automaton has 29183 states and 40396 transitions. Word has length 236 [2023-12-02 19:07:35,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:07:35,935 INFO L495 AbstractCegarLoop]: Abstraction has 29183 states and 40396 transitions. [2023-12-02 19:07:35,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-02 19:07:35,935 INFO L276 IsEmpty]: Start isEmpty. Operand 29183 states and 40396 transitions. [2023-12-02 19:07:35,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-02 19:07:35,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:07:35,939 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:07:35,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 19:07:35,939 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 19:07:35,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:07:35,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1104571258, now seen corresponding path program 1 times [2023-12-02 19:07:35,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:07:35,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855390638] [2023-12-02 19:07:35,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:07:35,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:07:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:07:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2023-12-02 19:07:36,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:07:36,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855390638] [2023-12-02 19:07:36,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855390638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:07:36,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:07:36,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:07:36,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566781914] [2023-12-02 19:07:36,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:07:36,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:07:36,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:07:36,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:07:36,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:07:36,331 INFO L87 Difference]: Start difference. First operand 29183 states and 40396 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 19:07:39,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:41,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:43,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:46,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:07:46,937 INFO L93 Difference]: Finished difference Result 29189 states and 40401 transitions. [2023-12-02 19:07:46,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:07:46,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 242 [2023-12-02 19:07:46,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:07:47,011 INFO L225 Difference]: With dead ends: 29189 [2023-12-02 19:07:47,012 INFO L226 Difference]: Without dead ends: 29187 [2023-12-02 19:07:47,022 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 19:07:47,022 INFO L413 NwaCegarLoop]: 2791 mSDtfsCounter, 3197 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3201 SdHoareTripleChecker+Valid, 8352 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:07:47,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3201 Valid, 8352 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1440 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2023-12-02 19:07:47,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29187 states. [2023-12-02 19:07:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29187 to 29187. [2023-12-02 19:07:48,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29187 states, 17268 states have (on average 1.276117674310864) internal successors, (22036), 17752 states have internal predecessors, (22036), 9124 states have call successors, (9124), 2820 states have call predecessors, (9124), 2792 states have return successors, (9239), 8785 states have call predecessors, (9239), 9120 states have call successors, (9239) [2023-12-02 19:07:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29187 states to 29187 states and 40399 transitions. [2023-12-02 19:07:48,993 INFO L78 Accepts]: Start accepts. Automaton has 29187 states and 40399 transitions. Word has length 242 [2023-12-02 19:07:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:07:48,994 INFO L495 AbstractCegarLoop]: Abstraction has 29187 states and 40399 transitions. [2023-12-02 19:07:48,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 19:07:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 29187 states and 40399 transitions. [2023-12-02 19:07:48,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-02 19:07:48,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:07:48,998 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 4, 4, 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] [2023-12-02 19:07:48,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 19:07:48,998 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 19:07:48,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:07:48,999 INFO L85 PathProgramCache]: Analyzing trace with hash 597704205, now seen corresponding path program 1 times [2023-12-02 19:07:48,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:07:48,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322443693] [2023-12-02 19:07:48,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:07:48,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:07:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:07:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 907 trivial. 0 not checked. [2023-12-02 19:07:49,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:07:49,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322443693] [2023-12-02 19:07:49,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322443693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:07:49,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:07:49,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:07:49,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680825558] [2023-12-02 19:07:49,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:07:49,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:07:49,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:07:49,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:07:49,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:07:49,307 INFO L87 Difference]: Start difference. First operand 29187 states and 40399 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 19:07:52,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:54,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:07:56,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:00,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:08:00,364 INFO L93 Difference]: Finished difference Result 29193 states and 40404 transitions. [2023-12-02 19:08:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:08:00,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 248 [2023-12-02 19:08:00,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:08:00,431 INFO L225 Difference]: With dead ends: 29193 [2023-12-02 19:08:00,431 INFO L226 Difference]: Without dead ends: 29191 [2023-12-02 19:08:00,439 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 19:08:00,439 INFO L413 NwaCegarLoop]: 2791 mSDtfsCounter, 3197 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3200 SdHoareTripleChecker+Valid, 8352 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:08:00,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3200 Valid, 8352 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1440 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2023-12-02 19:08:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29191 states. [2023-12-02 19:08:02,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29191 to 29191. [2023-12-02 19:08:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29191 states, 17271 states have (on average 1.2760697122343814) internal successors, (22039), 17755 states have internal predecessors, (22039), 9124 states have call successors, (9124), 2821 states have call predecessors, (9124), 2793 states have return successors, (9239), 8785 states have call predecessors, (9239), 9120 states have call successors, (9239) [2023-12-02 19:08:02,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29191 states to 29191 states and 40402 transitions. [2023-12-02 19:08:02,484 INFO L78 Accepts]: Start accepts. Automaton has 29191 states and 40402 transitions. Word has length 248 [2023-12-02 19:08:02,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:08:02,485 INFO L495 AbstractCegarLoop]: Abstraction has 29191 states and 40402 transitions. [2023-12-02 19:08:02,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 19:08:02,485 INFO L276 IsEmpty]: Start isEmpty. Operand 29191 states and 40402 transitions. [2023-12-02 19:08:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-02 19:08:02,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:08:02,489 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 11, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:08:02,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 19:08:02,489 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 19:08:02,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:08:02,490 INFO L85 PathProgramCache]: Analyzing trace with hash 944678968, now seen corresponding path program 1 times [2023-12-02 19:08:02,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:08:02,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331737301] [2023-12-02 19:08:02,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:08:02,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:08:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:08:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2023-12-02 19:08:02,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:08:02,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331737301] [2023-12-02 19:08:02,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331737301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:08:02,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:08:02,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:08:02,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978606784] [2023-12-02 19:08:02,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:08:02,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:08:02,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:08:02,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:08:02,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:08:02,798 INFO L87 Difference]: Start difference. First operand 29191 states and 40402 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 19:08:05,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:07,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:09,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:14,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:08:14,037 INFO L93 Difference]: Finished difference Result 29197 states and 40407 transitions. [2023-12-02 19:08:14,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:08:14,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 251 [2023-12-02 19:08:14,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:08:14,106 INFO L225 Difference]: With dead ends: 29197 [2023-12-02 19:08:14,107 INFO L226 Difference]: Without dead ends: 29195 [2023-12-02 19:08:14,116 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 19:08:14,116 INFO L413 NwaCegarLoop]: 2791 mSDtfsCounter, 3198 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3200 SdHoareTripleChecker+Valid, 8352 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:08:14,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3200 Valid, 8352 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1440 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2023-12-02 19:08:14,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29195 states. [2023-12-02 19:08:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29195 to 29195. [2023-12-02 19:08:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29195 states, 17274 states have (on average 1.2760217668171818) internal successors, (22042), 17758 states have internal predecessors, (22042), 9124 states have call successors, (9124), 2822 states have call predecessors, (9124), 2794 states have return successors, (9239), 8785 states have call predecessors, (9239), 9120 states have call successors, (9239) [2023-12-02 19:08:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29195 states to 29195 states and 40405 transitions. [2023-12-02 19:08:16,316 INFO L78 Accepts]: Start accepts. Automaton has 29195 states and 40405 transitions. Word has length 251 [2023-12-02 19:08:16,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:08:16,316 INFO L495 AbstractCegarLoop]: Abstraction has 29195 states and 40405 transitions. [2023-12-02 19:08:16,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 19:08:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 29195 states and 40405 transitions. [2023-12-02 19:08:16,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-02 19:08:16,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:08:16,321 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:08:16,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 19:08:16,321 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:08:16,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:08:16,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2132921278, now seen corresponding path program 1 times [2023-12-02 19:08:16,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:08:16,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501126046] [2023-12-02 19:08:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:08:16,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:08:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:08:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2023-12-02 19:08:16,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:08:16,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501126046] [2023-12-02 19:08:16,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501126046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:08:16,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:08:16,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:08:16,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086385176] [2023-12-02 19:08:16,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:08:16,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:08:16,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:08:16,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:08:16,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:08:16,736 INFO L87 Difference]: Start difference. First operand 29195 states and 40405 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 19:08:19,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:21,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:23,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:28,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:08:28,649 INFO L93 Difference]: Finished difference Result 29201 states and 40410 transitions. [2023-12-02 19:08:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:08:28,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 256 [2023-12-02 19:08:28,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:08:28,717 INFO L225 Difference]: With dead ends: 29201 [2023-12-02 19:08:28,717 INFO L226 Difference]: Without dead ends: 29197 [2023-12-02 19:08:28,726 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 19:08:28,726 INFO L413 NwaCegarLoop]: 2791 mSDtfsCounter, 3198 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3199 SdHoareTripleChecker+Valid, 8352 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:08:28,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3199 Valid, 8352 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1440 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2023-12-02 19:08:28,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29197 states. [2023-12-02 19:08:31,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29197 to 29197. [2023-12-02 19:08:31,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29197 states, 17276 states have (on average 1.2759319286871962) internal successors, (22043), 17759 states have internal predecessors, (22043), 9124 states have call successors, (9124), 2823 states have call predecessors, (9124), 2794 states have return successors, (9239), 8785 states have call predecessors, (9239), 9120 states have call successors, (9239) [2023-12-02 19:08:31,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29197 states to 29197 states and 40406 transitions. [2023-12-02 19:08:31,108 INFO L78 Accepts]: Start accepts. Automaton has 29197 states and 40406 transitions. Word has length 256 [2023-12-02 19:08:31,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:08:31,109 INFO L495 AbstractCegarLoop]: Abstraction has 29197 states and 40406 transitions. [2023-12-02 19:08:31,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 19:08:31,109 INFO L276 IsEmpty]: Start isEmpty. Operand 29197 states and 40406 transitions. [2023-12-02 19:08:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-02 19:08:31,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:08:31,113 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 6, 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] [2023-12-02 19:08:31,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 19:08:31,114 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 19:08:31,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:08:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 255278806, now seen corresponding path program 1 times [2023-12-02 19:08:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:08:31,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651983193] [2023-12-02 19:08:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:08:31,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:08:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:08:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2023-12-02 19:08:31,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:08:31,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651983193] [2023-12-02 19:08:31,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651983193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:08:31,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:08:31,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:08:31,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725529213] [2023-12-02 19:08:31,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:08:31,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:08:31,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:08:31,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:08:31,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:08:31,839 INFO L87 Difference]: Start difference. First operand 29197 states and 40406 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-02 19:08:34,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:36,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:38,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:44,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:08:44,282 INFO L93 Difference]: Finished difference Result 29225 states and 40432 transitions. [2023-12-02 19:08:44,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:08:44,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 266 [2023-12-02 19:08:44,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:08:44,359 INFO L225 Difference]: With dead ends: 29225 [2023-12-02 19:08:44,359 INFO L226 Difference]: Without dead ends: 29223 [2023-12-02 19:08:44,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 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 19:08:44,368 INFO L413 NwaCegarLoop]: 2819 mSDtfsCounter, 1962 mSDsluCounter, 6907 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 9726 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:08:44,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1964 Valid, 9726 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1648 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2023-12-02 19:08:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29223 states. [2023-12-02 19:08:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29223 to 29221. [2023-12-02 19:08:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29221 states, 17294 states have (on average 1.2746039088701284) internal successors, (22043), 17777 states have internal predecessors, (22043), 9124 states have call successors, (9124), 2829 states have call predecessors, (9124), 2800 states have return successors, (9239), 8785 states have call predecessors, (9239), 9120 states have call successors, (9239) [2023-12-02 19:08:46,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29221 states to 29221 states and 40406 transitions. [2023-12-02 19:08:46,711 INFO L78 Accepts]: Start accepts. Automaton has 29221 states and 40406 transitions. Word has length 266 [2023-12-02 19:08:46,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:08:46,712 INFO L495 AbstractCegarLoop]: Abstraction has 29221 states and 40406 transitions. [2023-12-02 19:08:46,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-02 19:08:46,712 INFO L276 IsEmpty]: Start isEmpty. Operand 29221 states and 40406 transitions. [2023-12-02 19:08:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-02 19:08:46,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:08:46,717 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 13, 12, 12, 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, 1, 1, 1, 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 19:08:46,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 19:08:46,717 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:08:46,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:08:46,717 INFO L85 PathProgramCache]: Analyzing trace with hash -278067066, now seen corresponding path program 1 times [2023-12-02 19:08:46,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:08:46,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114365992] [2023-12-02 19:08:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:08:46,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:08:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:08:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1026 trivial. 0 not checked. [2023-12-02 19:08:47,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:08:47,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114365992] [2023-12-02 19:08:47,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114365992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:08:47,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:08:47,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:08:47,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053336299] [2023-12-02 19:08:47,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:08:47,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:08:47,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:08:47,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:08:47,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:08:47,044 INFO L87 Difference]: Start difference. First operand 29221 states and 40406 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-02 19:08:49,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:51,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:53,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:58,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:08:58,752 INFO L93 Difference]: Finished difference Result 29221 states and 40406 transitions. [2023-12-02 19:08:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:08:58,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 262 [2023-12-02 19:08:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:08:58,863 INFO L225 Difference]: With dead ends: 29221 [2023-12-02 19:08:58,864 INFO L226 Difference]: Without dead ends: 29089 [2023-12-02 19:08:58,879 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 19:08:58,879 INFO L413 NwaCegarLoop]: 2789 mSDtfsCounter, 3193 mSDsluCounter, 5560 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3193 SdHoareTripleChecker+Valid, 8349 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:08:58,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3193 Valid, 8349 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1435 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2023-12-02 19:08:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29089 states. [2023-12-02 19:09:01,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29089 to 29089. [2023-12-02 19:09:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29089 states, 17227 states have (on average 1.2735821675277181) internal successors, (21940), 17678 states have internal predecessors, (21940), 9084 states have call successors, (9084), 2815 states have call predecessors, (9084), 2776 states have return successors, (9133), 8766 states have call predecessors, (9133), 9060 states have call successors, (9133) [2023-12-02 19:09:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29089 states to 29089 states and 40157 transitions. [2023-12-02 19:09:01,408 INFO L78 Accepts]: Start accepts. Automaton has 29089 states and 40157 transitions. Word has length 262 [2023-12-02 19:09:01,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:01,409 INFO L495 AbstractCegarLoop]: Abstraction has 29089 states and 40157 transitions. [2023-12-02 19:09:01,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-02 19:09:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 29089 states and 40157 transitions. [2023-12-02 19:09:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-02 19:09:01,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:01,416 INFO L195 NwaCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:01,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 19:09:01,416 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:09:01,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash 563900257, now seen corresponding path program 1 times [2023-12-02 19:09:01,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:01,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73088371] [2023-12-02 19:09:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:01,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2023-12-02 19:09:02,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:02,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73088371] [2023-12-02 19:09:02,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73088371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:02,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:02,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:09:02,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348603193] [2023-12-02 19:09:02,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:02,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:09:02,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:09:02,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:09:02,285 INFO L87 Difference]: Start difference. First operand 29089 states and 40157 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 19:09:05,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:07,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:09,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:11,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:16,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:16,283 INFO L93 Difference]: Finished difference Result 29091 states and 40158 transitions. [2023-12-02 19:09:16,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:09:16,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 298 [2023-12-02 19:09:16,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:16,374 INFO L225 Difference]: With dead ends: 29091 [2023-12-02 19:09:16,374 INFO L226 Difference]: Without dead ends: 27903 [2023-12-02 19:09:16,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:09:16,390 INFO L413 NwaCegarLoop]: 2911 mSDtfsCounter, 1467 mSDsluCounter, 7483 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 10394 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:16,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 10394 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1854 Invalid, 4 Unknown, 0 Unchecked, 11.4s Time] [2023-12-02 19:09:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27903 states. [2023-12-02 19:09:18,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27903 to 27903. [2023-12-02 19:09:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27903 states, 16652 states have (on average 1.276903675234206) internal successors, (21263), 17064 states have internal predecessors, (21263), 8645 states have call successors, (8645), 2617 states have call predecessors, (8645), 2604 states have return successors, (8718), 8384 states have call predecessors, (8718), 8645 states have call successors, (8718) [2023-12-02 19:09:18,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27903 states to 27903 states and 38626 transitions. [2023-12-02 19:09:18,810 INFO L78 Accepts]: Start accepts. Automaton has 27903 states and 38626 transitions. Word has length 298 [2023-12-02 19:09:18,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:18,810 INFO L495 AbstractCegarLoop]: Abstraction has 27903 states and 38626 transitions. [2023-12-02 19:09:18,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-02 19:09:18,810 INFO L276 IsEmpty]: Start isEmpty. Operand 27903 states and 38626 transitions. [2023-12-02 19:09:18,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-02 19:09:18,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:18,861 INFO L195 NwaCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 11, 8, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:18,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 19:09:18,862 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-02 19:09:18,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:18,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1853362284, now seen corresponding path program 1 times [2023-12-02 19:09:18,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:18,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997899957] [2023-12-02 19:09:18,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:18,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1473 trivial. 0 not checked. [2023-12-02 19:09:19,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:19,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997899957] [2023-12-02 19:09:19,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997899957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:19,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:19,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:09:19,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12966548] [2023-12-02 19:09:19,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:19,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:09:19,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:19,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:09:19,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:09:19,522 INFO L87 Difference]: Start difference. First operand 27903 states and 38626 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-02 19:09:22,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:25,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:25,333 INFO L93 Difference]: Finished difference Result 43518 states and 60513 transitions. [2023-12-02 19:09:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:09:25,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) Word has length 583 [2023-12-02 19:09:25,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:25,379 INFO L225 Difference]: With dead ends: 43518 [2023-12-02 19:09:25,379 INFO L226 Difference]: Without dead ends: 15845 [2023-12-02 19:09:25,427 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 19:09:25,428 INFO L413 NwaCegarLoop]: 2691 mSDtfsCounter, 3114 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:25,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3114 Valid, 2691 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-02 19:09:25,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15845 states. [2023-12-02 19:09:26,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15845 to 15845. [2023-12-02 19:09:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15845 states, 9572 states have (on average 1.294922691182616) internal successors, (12395), 9828 states have internal predecessors, (12395), 4895 states have call successors, (4895), 1383 states have call predecessors, (4895), 1376 states have return successors, (4932), 4766 states have call predecessors, (4932), 4895 states have call successors, (4932) [2023-12-02 19:09:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15845 states to 15845 states and 22222 transitions. [2023-12-02 19:09:26,812 INFO L78 Accepts]: Start accepts. Automaton has 15845 states and 22222 transitions. Word has length 583 [2023-12-02 19:09:26,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:26,812 INFO L495 AbstractCegarLoop]: Abstraction has 15845 states and 22222 transitions. [2023-12-02 19:09:26,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-02 19:09:26,812 INFO L276 IsEmpty]: Start isEmpty. Operand 15845 states and 22222 transitions. [2023-12-02 19:09:26,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2023-12-02 19:09:26,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:26,837 INFO L195 NwaCegarLoop]: trace histogram [27, 15, 15, 15, 15, 15, 15, 15, 15, 11, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:26,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 19:09:26,838 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 19:09:26,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:26,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1823052317, now seen corresponding path program 1 times [2023-12-02 19:09:26,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:26,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338282899] [2023-12-02 19:09:26,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:26,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:29,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 1927 trivial. 0 not checked. [2023-12-02 19:09:29,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:29,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338282899] [2023-12-02 19:09:29,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338282899] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:09:29,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359039850] [2023-12-02 19:09:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:29,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:29,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:29,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:29,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:09:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:31,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 5772 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:09:31,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 1487 trivial. 0 not checked. [2023-12-02 19:09:31,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:09:31,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359039850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:31,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:09:31,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-02 19:09:31,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697634847] [2023-12-02 19:09:31,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:31,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:09:31,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:31,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:09:31,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:09:31,821 INFO L87 Difference]: Start difference. First operand 15845 states and 22222 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-02 19:09:34,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:36,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:39,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:39,949 INFO L93 Difference]: Finished difference Result 31480 states and 44177 transitions. [2023-12-02 19:09:39,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:09:39,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 682 [2023-12-02 19:09:39,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:39,992 INFO L225 Difference]: With dead ends: 31480 [2023-12-02 19:09:39,992 INFO L226 Difference]: Without dead ends: 15921 [2023-12-02 19:09:40,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:09:40,022 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 14 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5361 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:40,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5361 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 955 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2023-12-02 19:09:40,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15921 states. [2023-12-02 19:09:41,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15921 to 15861. [2023-12-02 19:09:41,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15861 states, 9588 states have (on average 1.294430538172716) internal successors, (12411), 9844 states have internal predecessors, (12411), 4895 states have call successors, (4895), 1383 states have call predecessors, (4895), 1376 states have return successors, (4932), 4766 states have call predecessors, (4932), 4895 states have call successors, (4932) [2023-12-02 19:09:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15861 states to 15861 states and 22238 transitions. [2023-12-02 19:09:41,347 INFO L78 Accepts]: Start accepts. Automaton has 15861 states and 22238 transitions. Word has length 682 [2023-12-02 19:09:41,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:41,348 INFO L495 AbstractCegarLoop]: Abstraction has 15861 states and 22238 transitions. [2023-12-02 19:09:41,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-12-02 19:09:41,348 INFO L276 IsEmpty]: Start isEmpty. Operand 15861 states and 22238 transitions. [2023-12-02 19:09:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-12-02 19:09:41,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:41,374 INFO L195 NwaCegarLoop]: trace histogram [27, 17, 17, 15, 15, 15, 15, 15, 15, 12, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:41,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:09:41,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:41,575 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 19:09:41,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:41,575 INFO L85 PathProgramCache]: Analyzing trace with hash 753416894, now seen corresponding path program 1 times [2023-12-02 19:09:41,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:41,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223623668] [2023-12-02 19:09:41,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:41,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2134 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 2108 trivial. 0 not checked. [2023-12-02 19:09:43,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:09:43,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223623668] [2023-12-02 19:09:43,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223623668] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:09:43,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823782383] [2023-12-02 19:09:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:43,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:43,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:43,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:43,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:09:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:45,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 6047 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:09:45,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2134 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2023-12-02 19:09:45,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:09:45,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823782383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:45,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:09:45,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-02 19:09:45,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567613460] [2023-12-02 19:09:45,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:45,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:09:45,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:09:45,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:09:45,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:09:45,469 INFO L87 Difference]: Start difference. First operand 15861 states and 22238 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 3 states have call successors, (102), 3 states have call predecessors, (102), 3 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-12-02 19:09:48,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:50,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:56,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:56,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:56,417 INFO L93 Difference]: Finished difference Result 36633 states and 51391 transitions. [2023-12-02 19:09:56,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:09:56,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 3 states have call successors, (102), 3 states have call predecessors, (102), 3 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) Word has length 724 [2023-12-02 19:09:56,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:56,474 INFO L225 Difference]: With dead ends: 36633 [2023-12-02 19:09:56,474 INFO L226 Difference]: Without dead ends: 21058 [2023-12-02 19:09:56,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:09:56,506 INFO L413 NwaCegarLoop]: 4574 mSDtfsCounter, 2321 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 52 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 7134 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:56,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2321 Valid, 7134 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1292 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2023-12-02 19:09:56,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21058 states. [2023-12-02 19:09:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21058 to 21055. [2023-12-02 19:09:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21055 states, 12786 states have (on average 1.2907867980603784) internal successors, (16504), 13108 states have internal predecessors, (16504), 6425 states have call successors, (6425), 1853 states have call predecessors, (6425), 1842 states have return successors, (6484), 6242 states have call predecessors, (6484), 6425 states have call successors, (6484) [2023-12-02 19:09:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21055 states to 21055 states and 29413 transitions. [2023-12-02 19:09:58,291 INFO L78 Accepts]: Start accepts. Automaton has 21055 states and 29413 transitions. Word has length 724 [2023-12-02 19:09:58,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:58,292 INFO L495 AbstractCegarLoop]: Abstraction has 21055 states and 29413 transitions. [2023-12-02 19:09:58,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 3 states have call successors, (102), 3 states have call predecessors, (102), 3 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-12-02 19:09:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 21055 states and 29413 transitions. [2023-12-02 19:09:58,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2023-12-02 19:09:58,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:58,328 INFO L195 NwaCegarLoop]: trace histogram [29, 15, 15, 15, 15, 15, 15, 15, 15, 12, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:58,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:09:58,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 19:09:58,529 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 19:09:58,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1653464044, now seen corresponding path program 1 times [2023-12-02 19:09:58,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:09:58,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569253127] [2023-12-02 19:09:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:58,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:09:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:10:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2143 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 2104 trivial. 0 not checked. [2023-12-02 19:10:00,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:10:00,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569253127] [2023-12-02 19:10:00,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569253127] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:10:00,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163927019] [2023-12-02 19:10:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:10:00,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:10:00,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:10:00,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:10:00,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:10:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:10:02,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 5964 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:10:02,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:10:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2143 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2023-12-02 19:10:02,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:10:02,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163927019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:10:02,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:10:02,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-02 19:10:02,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390993581] [2023-12-02 19:10:02,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:10:02,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:10:02,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:10:02,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:10:02,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:10:02,512 INFO L87 Difference]: Start difference. First operand 21055 states and 29413 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 3 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (98), 3 states have call predecessors, (98), 3 states have call successors, (98) [2023-12-02 19:10:05,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:10:10,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:10:12,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:10:13,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:10:13,294 INFO L93 Difference]: Finished difference Result 48575 states and 67609 transitions. [2023-12-02 19:10:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:10:13,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 3 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (98), 3 states have call predecessors, (98), 3 states have call successors, (98) Word has length 726 [2023-12-02 19:10:13,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:10:13,376 INFO L225 Difference]: With dead ends: 48575 [2023-12-02 19:10:13,377 INFO L226 Difference]: Without dead ends: 27806 [2023-12-02 19:10:13,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:10:13,423 INFO L413 NwaCegarLoop]: 2673 mSDtfsCounter, 2988 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 27 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2988 SdHoareTripleChecker+Valid, 4684 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:10:13,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2988 Valid, 4684 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 925 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2023-12-02 19:10:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27806 states. [2023-12-02 19:10:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27806 to 27803. [2023-12-02 19:10:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27803 states, 16910 states have (on average 1.2886457717327024) internal successors, (21791), 17326 states have internal predecessors, (21791), 8355 states have call successors, (8355), 2551 states have call predecessors, (8355), 2536 states have return successors, (8436), 8100 states have call predecessors, (8436), 8355 states have call successors, (8436) [2023-12-02 19:10:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27803 states to 27803 states and 38582 transitions. [2023-12-02 19:10:15,964 INFO L78 Accepts]: Start accepts. Automaton has 27803 states and 38582 transitions. Word has length 726 [2023-12-02 19:10:15,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:10:15,965 INFO L495 AbstractCegarLoop]: Abstraction has 27803 states and 38582 transitions. [2023-12-02 19:10:15,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 3 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (98), 3 states have call predecessors, (98), 3 states have call successors, (98) [2023-12-02 19:10:15,966 INFO L276 IsEmpty]: Start isEmpty. Operand 27803 states and 38582 transitions. [2023-12-02 19:10:16,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-12-02 19:10:16,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:10:16,009 INFO L195 NwaCegarLoop]: trace histogram [29, 15, 15, 15, 15, 15, 15, 15, 15, 12, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:16,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:10:16,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 19:10:16,210 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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 19:10:16,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:10:16,211 INFO L85 PathProgramCache]: Analyzing trace with hash -702908480, now seen corresponding path program 1 times [2023-12-02 19:10:16,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:10:16,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632537725] [2023-12-02 19:10:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:10:16,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:10:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:10:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 2106 trivial. 0 not checked. [2023-12-02 19:10:18,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:10:18,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632537725] [2023-12-02 19:10:18,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632537725] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:10:18,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730939621] [2023-12-02 19:10:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:10:18,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:10:18,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:10:18,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:10:18,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e88e2f9c-7765-488d-9608-98acf5efde0d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:10:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:10:20,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 5966 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:10:20,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:10:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 594 proven. 1 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2023-12-02 19:10:20,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:10:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 2117 trivial. 0 not checked. [2023-12-02 19:10:20,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730939621] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:10:20,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [525895463] [2023-12-02 19:10:20,896 INFO L159 IcfgInterpreter]: Started Sifa with 376 locations of interest [2023-12-02 19:10:20,896 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:10:20,901 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:10:20,907 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:10:20,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:12:51,055 WARN L293 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 3063 DAG size of output: 3063 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:13:06,692 WARN L293 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 3063 DAG size of output: 3063 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:16:37,155 WARN L293 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 3063 DAG size of output: 3063 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2023-12-02 19:16:52,958 WARN L293 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 3063 DAG size of output: 3063 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)