./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire --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 a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:12:32,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:12:32,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:12:32,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:12:32,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:12:32,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:12:32,964 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:12:32,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:12:32,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:12:32,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:12:32,971 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:12:32,973 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:12:32,973 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:12:32,975 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:12:32,976 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:12:32,977 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:12:32,977 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:12:32,978 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:12:32,979 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:12:32,979 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:12:32,980 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:12:32,980 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:12:32,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:12:32,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:12:32,983 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:12:32,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:12:32,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:12:32,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:12:32,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:12:32,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:12:32,987 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:12:32,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:12:32,988 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:12:32,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:12:32,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:32,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:12:32,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:12:32,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:12:32,990 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:12:32,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:12:32,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:12:32,991 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:12:32,991 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:12:32,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:12:32,992 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_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 [2023-11-23 21:12:33,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:12:33,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:12:33,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:12:33,356 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:12:33,357 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:12:33,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2023-11-23 21:12:36,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:12:37,196 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:12:37,197 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2023-11-23 21:12:37,258 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/data/e73f59aef/55fb3b90cae1424a86a0d3ee35f3dabf/FLAGd1b9e6daa [2023-11-23 21:12:37,276 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/data/e73f59aef/55fb3b90cae1424a86a0d3ee35f3dabf [2023-11-23 21:12:37,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:12:37,283 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:12:37,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:37,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:12:37,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:12:37,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:37" (1/1) ... [2023-11-23 21:12:37,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c3812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:37, skipping insertion in model container [2023-11-23 21:12:37,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:37" (1/1) ... [2023-11-23 21:12:37,449 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:12:40,548 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_cf12dde8-9b63-465b-a241-d5c57abea814/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2023-11-23 21:12:40,553 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_cf12dde8-9b63-465b-a241-d5c57abea814/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2023-11-23 21:12:40,554 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_cf12dde8-9b63-465b-a241-d5c57abea814/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2023-11-23 21:12:40,555 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_cf12dde8-9b63-465b-a241-d5c57abea814/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2023-11-23 21:12:40,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:40,642 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:12:40,742 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"); [5259] [2023-11-23 21:12:40,744 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)); [5266] [2023-11-23 21:12:40,745 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5273] [2023-11-23 21:12:40,752 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)); [5316-5317] [2023-11-23 21:12:40,753 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"); [5322-5324] [2023-11-23 21:12:40,755 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [5344] [2023-11-23 21:12:40,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0": "+m" (v->counter)); [5351] [2023-11-23 21:12:40,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5513] [2023-11-23 21:12:40,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [5520] [2023-11-23 21:12:40,767 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)); [5614-5615] [2023-11-23 21:12:40,773 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)); [5648-5649] [2023-11-23 21:12:40,775 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (79), "i" (12UL)); [5690-5691] [2023-11-23 21:12:40,776 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (91), "i" (12UL)); [5719-5720] [2023-11-23 21:12:40,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6297] [2023-11-23 21:12:40,803 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/net/ethernet/natsemi/ns83820.c"), "i" (538), "i" (12UL)); [6331-6332] [2023-11-23 21:12:40,828 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6765] [2023-11-23 21:12:40,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6925] [2023-11-23 21:12:40,877 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)dev->rx_info.next_rx_desc) [7447] [2023-11-23 21:12:41,057 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_cf12dde8-9b63-465b-a241-d5c57abea814/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322443,322456] [2023-11-23 21:12:41,058 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_cf12dde8-9b63-465b-a241-d5c57abea814/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322612,322625] [2023-11-23 21:12:41,059 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322779,322792] [2023-11-23 21:12:41,060 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_cf12dde8-9b63-465b-a241-d5c57abea814/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i[322947,322960] [2023-11-23 21:12:41,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:41,272 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:12:41,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41 WrapperNode [2023-11-23 21:12:41,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:41,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:41,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:12:41,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:12:41,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,653 INFO L138 Inliner]: procedures = 459, calls = 1838, calls flagged for inlining = 218, calls inlined = 200, statements flattened = 5022 [2023-11-23 21:12:41,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:41,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:12:41,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:12:41,656 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:12:41,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,876 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,934 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:12:41,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:12:41,935 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:12:41,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:12:41,936 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:41,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:12:41,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:12:41,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf12dde8-9b63-465b-a241-d5c57abea814/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:12:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_set_multicast [2023-11-23 21:12:42,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_set_multicast [2023-11-23 21:12:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:12:42,019 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:12:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_rx_kick [2023-11-23 21:12:42,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_rx_kick [2023-11-23 21:12:42,020 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-23 21:12:42,020 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-23 21:12:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_do_reset [2023-11-23 21:12:42,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_do_reset [2023-11-23 21:12:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2023-11-23 21:12:42,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2023-11-23 21:12:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:12:42,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:12:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 21:12:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 21:12:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:12:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:12:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-23 21:12:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-23 21:12:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_62 [2023-11-23 21:12:42,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_62 [2023-11-23 21:12:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_73 [2023-11-23 21:12:42,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_73 [2023-11-23 21:12:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2023-11-23 21:12:42,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2023-11-23 21:12:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_remove_one [2023-11-23 21:12:42,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_remove_one [2023-11-23 21:12:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:12:42,024 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:12:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_update_stats [2023-11-23 21:12:42,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_update_stats [2023-11-23 21:12:42,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:12:42,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:12:42,025 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-23 21:12:42,025 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-23 21:12:42,025 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-23 21:12:42,026 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-23 21:12:42,026 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-23 21:12:42,027 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-23 21:12:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:12:42,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:12:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:12:42,028 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:12:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-23 21:12:42,028 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-23 21:12:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:12:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-23 21:12:42,029 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-23 21:12:42,029 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:12:42,029 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:12:42,029 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 21:12:42,030 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 21:12:42,030 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_tx_timeout [2023-11-23 21:12:42,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_tx_timeout [2023-11-23 21:12:42,031 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 21:12:42,031 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 21:12:42,031 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:12:42,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:12:42,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:12:42,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:12:42,032 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:12:42,033 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:12:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:12:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 21:12:42,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 21:12:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-23 21:12:42,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-23 21:12:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:12:42,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:12:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-23 21:12:42,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-23 21:12:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2023-11-23 21:12:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2023-11-23 21:12:42,035 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-23 21:12:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-23 21:12:42,035 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-23 21:12:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-23 21:12:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:12:42,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:12:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_run_bist [2023-11-23 21:12:42,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_run_bist [2023-11-23 21:12:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:12:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-23 21:12:42,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-23 21:12:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-23 21:12:42,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-23 21:12:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2023-11-23 21:12:42,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2023-11-23 21:12:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:12:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:12:42,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:12:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:12:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure clear_rx_desc [2023-11-23 21:12:42,040 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_rx_desc [2023-11-23 21:12:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure phy_intr [2023-11-23 21:12:42,040 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_intr [2023-11-23 21:12:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:12:42,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:12:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-23 21:12:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-23 21:12:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:12:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:12:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-23 21:12:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-23 21:12:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-23 21:12:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-23 21:12:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2023-11-23 21:12:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2023-11-23 21:12:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure do_tx_done [2023-11-23 21:12:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure do_tx_done [2023-11-23 21:12:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_misc_lock_of_ns83820 [2023-11-23 21:12:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_misc_lock_of_ns83820 [2023-11-23 21:12:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:12:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:12:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-23 21:12:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-23 21:12:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2023-11-23 21:12:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2023-11-23 21:12:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-23 21:12:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-23 21:12:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:12:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:12:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_stop [2023-11-23 21:12:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_stop [2023-11-23 21:12:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure kick_tx [2023-11-23 21:12:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_tx [2023-11-23 21:12:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rx_info [2023-11-23 21:12:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rx_info [2023-11-23 21:12:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:12:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:12:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-23 21:12:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-23 21:12:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:12:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:12:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2023-11-23 21:12:42,059 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2023-11-23 21:12:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2023-11-23 21:12:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2023-11-23 21:12:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-23 21:12:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-23 21:12:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-23 21:12:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-23 21:12:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2023-11-23 21:12:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2023-11-23 21:12:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2023-11-23 21:12:42,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2023-11-23 21:12:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:12:42,061 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:12:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:12:42,061 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:12:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-23 21:12:42,062 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-23 21:12:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2023-11-23 21:12:42,062 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2023-11-23 21:12:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2023-11-23 21:12:42,062 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2023-11-23 21:12:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-11-23 21:12:42,063 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-11-23 21:12:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:12:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_72 [2023-11-23 21:12:42,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_72 [2023-11-23 21:12:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:12:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:12:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:12:42,064 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:12:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-23 21:12:42,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-23 21:12:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-23 21:12:42,064 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-23 21:12:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-23 21:12:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-23 21:12:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:12:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:12:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-23 21:12:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-23 21:12:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-23 21:12:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-23 21:12:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-23 21:12:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-23 21:12:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:12:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:12:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_ns83820 [2023-11-23 21:12:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_ns83820 [2023-11-23 21:12:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2023-11-23 21:12:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2023-11-23 21:12:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure build_rx_desc [2023-11-23 21:12:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure build_rx_desc [2023-11-23 21:12:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:12:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-23 21:12:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-23 21:12:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:12:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:12:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-23 21:12:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-23 21:12:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_misc_lock_of_ns83820 [2023-11-23 21:12:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_misc_lock_of_ns83820 [2023-11-23 21:12:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-11-23 21:12:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-11-23 21:12:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_open [2023-11-23 21:12:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_open [2023-11-23 21:12:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:12:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:12:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-23 21:12:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-23 21:12:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure rx_irq [2023-11-23 21:12:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_irq [2023-11-23 21:12:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_disable_interrupts [2023-11-23 21:12:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_disable_interrupts [2023-11-23 21:12:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure kick_rx [2023-11-23 21:12:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_rx [2023-11-23 21:12:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 21:12:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 21:12:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-23 21:12:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-23 21:12:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:12:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure rx_refill [2023-11-23 21:12:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_refill [2023-11-23 21:12:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:12:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:12:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rx_info [2023-11-23 21:12:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rx_info [2023-11-23 21:12:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_ns83820 [2023-11-23 21:12:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_ns83820 [2023-11-23 21:12:43,023 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:12:43,032 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:12:43,284 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:12:46,601 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 21:12:46,794 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:12:50,133 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:12:50,133 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:12:50,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:50 BoogieIcfgContainer [2023-11-23 21:12:50,137 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:12:50,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:12:50,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:12:50,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:12:50,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:12:37" (1/3) ... [2023-11-23 21:12:50,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cef87f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:50, skipping insertion in model container [2023-11-23 21:12:50,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41" (2/3) ... [2023-11-23 21:12:50,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cef87f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:50, skipping insertion in model container [2023-11-23 21:12:50,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:50" (3/3) ... [2023-11-23 21:12:50,149 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2023-11-23 21:12:50,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:12:50,173 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-23 21:12:50,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:12:50,292 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;@7e359927, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:12:50,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 21:12:50,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 1440 states, 798 states have (on average 1.2305764411027569) internal successors, (982), 830 states have internal predecessors, (982), 534 states have call successors, (534), 106 states have call predecessors, (534), 105 states have return successors, (529), 525 states have call predecessors, (529), 529 states have call successors, (529) [2023-11-23 21:12:50,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-23 21:12:50,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:50,322 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:50,323 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)] === [2023-11-23 21:12:50,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:50,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1446781301, now seen corresponding path program 1 times [2023-11-23 21:12:50,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:50,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054944264] [2023-11-23 21:12:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:50,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-23 21:12:51,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:51,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054944264] [2023-11-23 21:12:51,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054944264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:51,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:51,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:51,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281082864] [2023-11-23 21:12:51,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:51,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:51,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:51,294 INFO L87 Difference]: Start difference. First operand has 1440 states, 798 states have (on average 1.2305764411027569) internal successors, (982), 830 states have internal predecessors, (982), 534 states have call successors, (534), 106 states have call predecessors, (534), 105 states have return successors, (529), 525 states have call predecessors, (529), 529 states have call successors, (529) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 21:12:53,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:53,926 INFO L93 Difference]: Finished difference Result 4227 states and 6160 transitions. [2023-11-23 21:12:53,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:53,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2023-11-23 21:12:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:53,976 INFO L225 Difference]: With dead ends: 4227 [2023-11-23 21:12:53,985 INFO L226 Difference]: Without dead ends: 2792 [2023-11-23 21:12:54,004 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 [2023-11-23 21:12:54,008 INFO L413 NwaCegarLoop]: 1768 mSDtfsCounter, 1957 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 3493 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:54,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 3493 Invalid, 579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-23 21:12:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2023-11-23 21:12:54,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2788. [2023-11-23 21:12:54,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 1555 states have (on average 1.2244372990353698) internal successors, (1904), 1617 states have internal predecessors, (1904), 1023 states have call successors, (1023), 208 states have call predecessors, (1023), 207 states have return successors, (1020), 1012 states have call predecessors, (1020), 1020 states have call successors, (1020) [2023-11-23 21:12:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3947 transitions. [2023-11-23 21:12:54,301 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3947 transitions. Word has length 87 [2023-11-23 21:12:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:54,308 INFO L495 AbstractCegarLoop]: Abstraction has 2788 states and 3947 transitions. [2023-11-23 21:12:54,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 21:12:54,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3947 transitions. [2023-11-23 21:12:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 21:12:54,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:54,325 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:54,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:12:54,326 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)] === [2023-11-23 21:12:54,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash -113015976, now seen corresponding path program 1 times [2023-11-23 21:12:54,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:54,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715882692] [2023-11-23 21:12:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:54,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-23 21:12:54,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:54,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715882692] [2023-11-23 21:12:54,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715882692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:54,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:54,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:54,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048927807] [2023-11-23 21:12:54,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:54,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:54,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:54,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:54,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:54,657 INFO L87 Difference]: Start difference. First operand 2788 states and 3947 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 21:12:57,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:57,027 INFO L93 Difference]: Finished difference Result 6219 states and 8798 transitions. [2023-11-23 21:12:57,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:57,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2023-11-23 21:12:57,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:57,061 INFO L225 Difference]: With dead ends: 6219 [2023-11-23 21:12:57,061 INFO L226 Difference]: Without dead ends: 3446 [2023-11-23 21:12:57,076 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 [2023-11-23 21:12:57,077 INFO L413 NwaCegarLoop]: 1753 mSDtfsCounter, 1437 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:57,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 3453 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 21:12:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2023-11-23 21:12:57,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 3419. [2023-11-23 21:12:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 1910 states have (on average 1.2183246073298428) internal successors, (2327), 1990 states have internal predecessors, (2327), 1241 states have call successors, (1241), 266 states have call predecessors, (1241), 265 states have return successors, (1238), 1227 states have call predecessors, (1238), 1238 states have call successors, (1238) [2023-11-23 21:12:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 4806 transitions. [2023-11-23 21:12:57,440 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 4806 transitions. Word has length 99 [2023-11-23 21:12:57,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:57,448 INFO L495 AbstractCegarLoop]: Abstraction has 3419 states and 4806 transitions. [2023-11-23 21:12:57,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 21:12:57,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 4806 transitions. [2023-11-23 21:12:57,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 21:12:57,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:57,453 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:57,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:12:57,453 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)] === [2023-11-23 21:12:57,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2101042787, now seen corresponding path program 1 times [2023-11-23 21:12:57,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:57,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219295975] [2023-11-23 21:12:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:57,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-23 21:12:57,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:57,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219295975] [2023-11-23 21:12:57,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219295975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:57,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828060090] [2023-11-23 21:12:57,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:57,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:57,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:57,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:57,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:57,706 INFO L87 Difference]: Start difference. First operand 3419 states and 4806 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 21:13:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:00,324 INFO L93 Difference]: Finished difference Result 8347 states and 11649 transitions. [2023-11-23 21:13:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:00,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2023-11-23 21:13:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:00,372 INFO L225 Difference]: With dead ends: 8347 [2023-11-23 21:13:00,372 INFO L226 Difference]: Without dead ends: 4943 [2023-11-23 21:13:00,391 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 [2023-11-23 21:13:00,392 INFO L413 NwaCegarLoop]: 1746 mSDtfsCounter, 1680 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 3433 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:00,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1680 Valid, 3433 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 21:13:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4943 states. [2023-11-23 21:13:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4943 to 4914. [2023-11-23 21:13:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4914 states, 2744 states have (on average 1.2059037900874636) internal successors, (3309), 2865 states have internal predecessors, (3309), 1751 states have call successors, (1751), 417 states have call predecessors, (1751), 416 states have return successors, (1751), 1730 states have call predecessors, (1751), 1748 states have call successors, (1751) [2023-11-23 21:13:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 6811 transitions. [2023-11-23 21:13:00,734 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 6811 transitions. Word has length 98 [2023-11-23 21:13:00,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:00,735 INFO L495 AbstractCegarLoop]: Abstraction has 4914 states and 6811 transitions. [2023-11-23 21:13:00,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 21:13:00,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 6811 transitions. [2023-11-23 21:13:00,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 21:13:00,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:00,738 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:00,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:13:00,738 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)] === [2023-11-23 21:13:00,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:00,739 INFO L85 PathProgramCache]: Analyzing trace with hash -127215660, now seen corresponding path program 1 times [2023-11-23 21:13:00,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:00,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456132833] [2023-11-23 21:13:00,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:00,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-23 21:13:01,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:01,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456132833] [2023-11-23 21:13:01,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456132833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:01,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:01,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:01,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638223359] [2023-11-23 21:13:01,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:01,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:01,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:01,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:01,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:01,091 INFO L87 Difference]: Start difference. First operand 4914 states and 6811 transitions. 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 21:13:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:03,722 INFO L93 Difference]: Finished difference Result 13491 states and 18706 transitions. [2023-11-23 21:13:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:03,723 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2023-11-23 21:13:03,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:03,799 INFO L225 Difference]: With dead ends: 13491 [2023-11-23 21:13:03,800 INFO L226 Difference]: Without dead ends: 8592 [2023-11-23 21:13:03,830 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 [2023-11-23 21:13:03,833 INFO L413 NwaCegarLoop]: 1756 mSDtfsCounter, 1900 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:03,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1900 Valid, 3402 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-23 21:13:03,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2023-11-23 21:13:04,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 8559. [2023-11-23 21:13:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8559 states, 4785 states have (on average 1.2083594566353186) internal successors, (5782), 5005 states have internal predecessors, (5782), 3031 states have call successors, (3031), 744 states have call predecessors, (3031), 740 states have return successors, (3056), 2978 states have call predecessors, (3056), 3028 states have call successors, (3056) [2023-11-23 21:13:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8559 states to 8559 states and 11869 transitions. [2023-11-23 21:13:04,646 INFO L78 Accepts]: Start accepts. Automaton has 8559 states and 11869 transitions. Word has length 102 [2023-11-23 21:13:04,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:04,647 INFO L495 AbstractCegarLoop]: Abstraction has 8559 states and 11869 transitions. [2023-11-23 21:13:04,647 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 21:13:04,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8559 states and 11869 transitions. [2023-11-23 21:13:04,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 21:13:04,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:04,650 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2023-11-23 21:13:04,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:13:04,651 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:13:04,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:04,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1737098174, now seen corresponding path program 1 times [2023-11-23 21:13:04,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:04,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642869798] [2023-11-23 21:13:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:04,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-23 21:13:04,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:04,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642869798] [2023-11-23 21:13:04,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642869798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:04,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:04,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:13:04,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514089682] [2023-11-23 21:13:04,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:04,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:13:04,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:13:04,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:04,967 INFO L87 Difference]: Start difference. First operand 8559 states and 11869 transitions. 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:13:07,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:07,872 INFO L93 Difference]: Finished difference Result 23315 states and 32276 transitions. [2023-11-23 21:13:07,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:07,873 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2023-11-23 21:13:07,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:07,988 INFO L225 Difference]: With dead ends: 23315 [2023-11-23 21:13:07,989 INFO L226 Difference]: Without dead ends: 14771 [2023-11-23 21:13:08,031 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 [2023-11-23 21:13:08,032 INFO L413 NwaCegarLoop]: 2188 mSDtfsCounter, 1856 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:08,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 3895 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-23 21:13:08,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14771 states. [2023-11-23 21:13:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14771 to 14736. [2023-11-23 21:13:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14736 states, 8276 states have (on average 1.207709038182697) internal successors, (9995), 8632 states have internal predecessors, (9995), 5153 states have call successors, (5153), 1315 states have call predecessors, (5153), 1304 states have return successors, (5209), 5035 states have call predecessors, (5209), 5150 states have call successors, (5209) [2023-11-23 21:13:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14736 states to 14736 states and 20357 transitions. [2023-11-23 21:13:09,151 INFO L78 Accepts]: Start accepts. Automaton has 14736 states and 20357 transitions. Word has length 103 [2023-11-23 21:13:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:09,152 INFO L495 AbstractCegarLoop]: Abstraction has 14736 states and 20357 transitions. [2023-11-23 21:13:09,153 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:13:09,153 INFO L276 IsEmpty]: Start isEmpty. Operand 14736 states and 20357 transitions. [2023-11-23 21:13:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-23 21:13:09,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:09,156 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 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] [2023-11-23 21:13:09,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:13:09,156 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)] === [2023-11-23 21:13:09,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:09,157 INFO L85 PathProgramCache]: Analyzing trace with hash 679897062, now seen corresponding path program 1 times [2023-11-23 21:13:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:09,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889979324] [2023-11-23 21:13:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:09,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-11-23 21:13:09,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:09,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889979324] [2023-11-23 21:13:09,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889979324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:09,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:09,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:13:09,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979426827] [2023-11-23 21:13:09,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:09,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:13:09,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:09,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:13:09,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:13:09,619 INFO L87 Difference]: Start difference. First operand 14736 states and 20357 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 21:13:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:12,879 INFO L93 Difference]: Finished difference Result 14742 states and 20362 transitions. [2023-11-23 21:13:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:13:12,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 129 [2023-11-23 21:13:12,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:12,966 INFO L225 Difference]: With dead ends: 14742 [2023-11-23 21:13:12,967 INFO L226 Difference]: Without dead ends: 14740 [2023-11-23 21:13:12,976 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 [2023-11-23 21:13:12,977 INFO L413 NwaCegarLoop]: 1735 mSDtfsCounter, 1980 mSDsluCounter, 3454 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 5189 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:12,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 5189 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 21:13:13,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14740 states. [2023-11-23 21:13:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14740 to 14740. [2023-11-23 21:13:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14740 states, 8279 states have (on average 1.2076337721947095) internal successors, (9998), 8635 states have internal predecessors, (9998), 5153 states have call successors, (5153), 1316 states have call predecessors, (5153), 1305 states have return successors, (5209), 5035 states have call predecessors, (5209), 5150 states have call successors, (5209) [2023-11-23 21:13:14,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14740 states to 14740 states and 20360 transitions. [2023-11-23 21:13:14,274 INFO L78 Accepts]: Start accepts. Automaton has 14740 states and 20360 transitions. Word has length 129 [2023-11-23 21:13:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:14,276 INFO L495 AbstractCegarLoop]: Abstraction has 14740 states and 20360 transitions. [2023-11-23 21:13:14,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 21:13:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand 14740 states and 20360 transitions. [2023-11-23 21:13:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 21:13:14,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:14,280 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:14,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:13:14,281 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)] === [2023-11-23 21:13:14,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2146846948, now seen corresponding path program 1 times [2023-11-23 21:13:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:14,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214779419] [2023-11-23 21:13:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:14,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-11-23 21:13:14,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:14,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214779419] [2023-11-23 21:13:14,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214779419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:14,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:14,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:13:14,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163366869] [2023-11-23 21:13:14,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:14,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:13:14,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:14,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:13:14,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:13:14,759 INFO L87 Difference]: Start difference. First operand 14740 states and 20360 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 21:13:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:17,906 INFO L93 Difference]: Finished difference Result 14746 states and 20365 transitions. [2023-11-23 21:13:17,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:13:17,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 134 [2023-11-23 21:13:17,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:17,993 INFO L225 Difference]: With dead ends: 14746 [2023-11-23 21:13:17,993 INFO L226 Difference]: Without dead ends: 14744 [2023-11-23 21:13:18,004 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 [2023-11-23 21:13:18,005 INFO L413 NwaCegarLoop]: 1738 mSDtfsCounter, 1975 mSDsluCounter, 3454 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 5192 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:18,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 5192 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-23 21:13:18,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14744 states.