./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/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_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-25 00:08:45,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:08:45,716 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:08:45,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:08:45,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:08:45,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:08:45,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:08:45,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:08:45,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:08:45,771 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:08:45,771 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:08:45,772 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:08:45,773 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:08:45,774 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:08:45,775 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:08:45,775 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:08:45,776 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:08:45,776 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:08:45,776 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:08:45,777 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:08:45,777 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:08:45,778 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:08:45,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:08:45,779 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:08:45,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:08:45,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:08:45,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:08:45,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:08:45,781 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:08:45,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:08:45,783 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:08:45,784 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:08:45,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:08:45,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:08:45,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:08:45,785 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:08:45,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:08:45,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:08:45,785 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:08:45,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:08:45,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:08:45,786 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:08:45,786 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:08:45,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:08:45,787 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_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8ab8b9c7011aec39f84a1ecf826f202398208cb106ea4649e1adfd1ea4d4076 [2023-11-25 00:08:46,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:08:46,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:08:46,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:08:46,174 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:08:46,175 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:08:46,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2023-11-25 00:08:49,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:08:49,987 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:08:49,988 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2023-11-25 00:08:50,044 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/data/eaee619d6/abf84dc9a02544d182028eb1e56979e5/FLAGc05e5e7ef [2023-11-25 00:08:50,063 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/data/eaee619d6/abf84dc9a02544d182028eb1e56979e5 [2023-11-25 00:08:50,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:08:50,070 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:08:50,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:08:50,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:08:50,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:08:50,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:08:50" (1/1) ... [2023-11-25 00:08:50,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a716d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:50, skipping insertion in model container [2023-11-25 00:08:50,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:08:50" (1/1) ... [2023-11-25 00:08:50,321 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:08:53,791 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_77dc8084-11c4-498f-9182-c81d60c77a0e/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] [2023-11-25 00:08:53,797 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_77dc8084-11c4-498f-9182-c81d60c77a0e/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] [2023-11-25 00:08:53,798 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_77dc8084-11c4-498f-9182-c81d60c77a0e/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] [2023-11-25 00:08:53,798 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_77dc8084-11c4-498f-9182-c81d60c77a0e/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] [2023-11-25 00:08:53,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:08:53,905 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:08:54,040 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] [2023-11-25 00:08:54,042 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] [2023-11-25 00:08:54,043 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5273] [2023-11-25 00:08:54,045 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] [2023-11-25 00:08:54,045 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] [2023-11-25 00:08:54,046 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] [2023-11-25 00:08:54,047 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] [2023-11-25 00:08:54,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5513] [2023-11-25 00:08:54,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [5520] [2023-11-25 00:08:54,060 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] [2023-11-25 00:08:54,069 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] [2023-11-25 00:08:54,071 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] [2023-11-25 00:08:54,072 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] [2023-11-25 00:08:54,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6297] [2023-11-25 00:08:54,096 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] [2023-11-25 00:08:54,125 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6765] [2023-11-25 00:08:54,140 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("mfence": : : "memory"); [6925] [2023-11-25 00:08:54,169 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)dev->rx_info.next_rx_desc) [7447] [2023-11-25 00:08:54,326 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_77dc8084-11c4-498f-9182-c81d60c77a0e/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] [2023-11-25 00:08:54,327 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_77dc8084-11c4-498f-9182-c81d60c77a0e/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] [2023-11-25 00:08:54,328 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_77dc8084-11c4-498f-9182-c81d60c77a0e/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] [2023-11-25 00:08:54,328 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_77dc8084-11c4-498f-9182-c81d60c77a0e/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] [2023-11-25 00:08:54,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:08:54,573 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:08:54,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54 WrapperNode [2023-11-25 00:08:54,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:08:54,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:08:54,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:08:54,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:08:54,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54" (1/1) ... [2023-11-25 00:08:54,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54" (1/1) ... [2023-11-25 00:08:54,896 INFO L138 Inliner]: procedures = 459, calls = 1838, calls flagged for inlining = 218, calls inlined = 200, statements flattened = 5090 [2023-11-25 00:08:54,897 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:08:54,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:08:54,898 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:08:54,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:08:54,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54" (1/1) ... [2023-11-25 00:08:54,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54" (1/1) ... [2023-11-25 00:08:54,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54" (1/1) ... [2023-11-25 00:08:54,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54" (1/1) ... [2023-11-25 00:08:55,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54" (1/1) ... [2023-11-25 00:08:55,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54" (1/1) ... [2023-11-25 00:08:55,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54" (1/1) ... [2023-11-25 00:08:55,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54" (1/1) ... [2023-11-25 00:08:55,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:08:55,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:08:55,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:08:55,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:08:55,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54" (1/1) ... [2023-11-25 00:08:55,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:08:55,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:08:55,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:08:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_set_multicast [2023-11-25 00:08:55,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_set_multicast [2023-11-25 00:08:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-25 00:08:55,409 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-25 00:08:55,409 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_rx_kick [2023-11-25 00:08:55,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_rx_kick [2023-11-25 00:08:55,410 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-25 00:08:55,410 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-25 00:08:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_do_reset [2023-11-25 00:08:55,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_do_reset [2023-11-25 00:08:55,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2023-11-25 00:08:55,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2023-11-25 00:08:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-25 00:08:55,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-25 00:08:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-25 00:08:55,414 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-25 00:08:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-25 00:08:55,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-25 00:08:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-25 00:08:55,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77dc8084-11c4-498f-9182-c81d60c77a0e/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:08:55,415 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-25 00:08:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_62 [2023-11-25 00:08:55,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_62 [2023-11-25 00:08:55,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_73 [2023-11-25 00:08:55,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_73 [2023-11-25 00:08:55,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2023-11-25 00:08:55,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2023-11-25 00:08:55,417 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_remove_one [2023-11-25 00:08:55,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_remove_one [2023-11-25 00:08:55,417 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-25 00:08:55,417 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-25 00:08:55,417 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_update_stats [2023-11-25 00:08:55,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_update_stats [2023-11-25 00:08:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-25 00:08:55,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-25 00:08:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-25 00:08:55,418 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-25 00:08:55,419 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-25 00:08:55,419 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-25 00:08:55,420 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-25 00:08:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-25 00:08:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-25 00:08:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-25 00:08:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-25 00:08:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-25 00:08:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-25 00:08:55,422 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-25 00:08:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:08:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-25 00:08:55,422 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-25 00:08:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-25 00:08:55,423 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-25 00:08:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-25 00:08:55,423 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-25 00:08:55,424 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_tx_timeout [2023-11-25 00:08:55,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_tx_timeout [2023-11-25 00:08:55,424 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-25 00:08:55,424 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-25 00:08:55,424 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-25 00:08:55,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-25 00:08:55,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-25 00:08:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-25 00:08:55,426 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-25 00:08:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-25 00:08:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:08:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-25 00:08:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-25 00:08:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-25 00:08:55,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-25 00:08:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-25 00:08:55,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-25 00:08:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-25 00:08:55,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-25 00:08:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2023-11-25 00:08:55,429 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2023-11-25 00:08:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-25 00:08:55,429 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-25 00:08:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-25 00:08:55,429 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-25 00:08:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-25 00:08:55,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-25 00:08:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_run_bist [2023-11-25 00:08:55,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_run_bist [2023-11-25 00:08:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:08:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-25 00:08:55,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-25 00:08:55,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-25 00:08:55,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-25 00:08:55,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2023-11-25 00:08:55,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2023-11-25 00:08:55,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:08:55,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-25 00:08:55,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-25 00:08:55,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:08:55,434 INFO L130 BoogieDeclarations]: Found specification of procedure clear_rx_desc [2023-11-25 00:08:55,434 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_rx_desc [2023-11-25 00:08:55,434 INFO L130 BoogieDeclarations]: Found specification of procedure phy_intr [2023-11-25 00:08:55,435 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_intr [2023-11-25 00:08:55,435 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-25 00:08:55,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-25 00:08:55,435 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-25 00:08:55,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-25 00:08:55,435 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-25 00:08:55,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-25 00:08:55,436 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-25 00:08:55,436 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-25 00:08:55,436 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-25 00:08:55,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-25 00:08:55,437 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2023-11-25 00:08:55,437 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2023-11-25 00:08:55,437 INFO L130 BoogieDeclarations]: Found specification of procedure do_tx_done [2023-11-25 00:08:55,437 INFO L138 BoogieDeclarations]: Found implementation of procedure do_tx_done [2023-11-25 00:08:55,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_misc_lock_of_ns83820 [2023-11-25 00:08:55,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_misc_lock_of_ns83820 [2023-11-25 00:08:55,438 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-25 00:08:55,440 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-25 00:08:55,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-25 00:08:55,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-25 00:08:55,440 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2023-11-25 00:08:55,440 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2023-11-25 00:08:55,441 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-25 00:08:55,441 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-25 00:08:55,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:08:55,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:08:55,443 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_stop [2023-11-25 00:08:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_stop [2023-11-25 00:08:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure kick_tx [2023-11-25 00:08:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_tx [2023-11-25 00:08:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rx_info [2023-11-25 00:08:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rx_info [2023-11-25 00:08:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-25 00:08:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-25 00:08:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-25 00:08:55,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-25 00:08:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-25 00:08:55,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-25 00:08:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2023-11-25 00:08:55,457 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2023-11-25 00:08:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2023-11-25 00:08:55,457 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2023-11-25 00:08:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-25 00:08:55,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-25 00:08:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-25 00:08:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-25 00:08:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2023-11-25 00:08:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2023-11-25 00:08:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2023-11-25 00:08:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2023-11-25 00:08:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:08:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:08:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-25 00:08:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-25 00:08:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-25 00:08:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-25 00:08:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2023-11-25 00:08:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2023-11-25 00:08:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2023-11-25 00:08:55,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2023-11-25 00:08:55,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-11-25 00:08:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-11-25 00:08:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:08:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_72 [2023-11-25 00:08:55,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_72 [2023-11-25 00:08:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:08:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:08:55,462 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-25 00:08:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-25 00:08:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-25 00:08:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-25 00:08:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-25 00:08:55,463 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-25 00:08:55,463 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-25 00:08:55,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-25 00:08:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-25 00:08:55,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-25 00:08:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-25 00:08:55,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-25 00:08:55,464 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2023-11-25 00:08:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2023-11-25 00:08:55,465 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-25 00:08:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-25 00:08:55,465 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-25 00:08:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-25 00:08:55,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_ns83820 [2023-11-25 00:08:55,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_ns83820 [2023-11-25 00:08:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2023-11-25 00:08:55,466 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2023-11-25 00:08:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure build_rx_desc [2023-11-25 00:08:55,466 INFO L138 BoogieDeclarations]: Found implementation of procedure build_rx_desc [2023-11-25 00:08:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:08:55,466 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-25 00:08:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-25 00:08:55,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-25 00:08:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-25 00:08:55,467 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-25 00:08:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-25 00:08:55,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_misc_lock_of_ns83820 [2023-11-25 00:08:55,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_misc_lock_of_ns83820 [2023-11-25 00:08:55,468 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-11-25 00:08:55,468 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-11-25 00:08:55,468 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_open [2023-11-25 00:08:55,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_open [2023-11-25 00:08:55,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-25 00:08:55,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-25 00:08:55,468 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-25 00:08:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-25 00:08:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure rx_irq [2023-11-25 00:08:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_irq [2023-11-25 00:08:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure ns83820_disable_interrupts [2023-11-25 00:08:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ns83820_disable_interrupts [2023-11-25 00:08:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure kick_rx [2023-11-25 00:08:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure kick_rx [2023-11-25 00:08:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-25 00:08:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-25 00:08:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-25 00:08:55,470 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-25 00:08:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:08:55,470 INFO L130 BoogieDeclarations]: Found specification of procedure rx_refill [2023-11-25 00:08:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_refill [2023-11-25 00:08:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-25 00:08:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-25 00:08:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rx_info [2023-11-25 00:08:55,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rx_info [2023-11-25 00:08:55,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_ns83820 [2023-11-25 00:08:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_ns83820 [2023-11-25 00:08:56,343 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:08:56,349 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:08:56,698 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-25 00:09:00,607 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-25 00:09:00,819 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:09:04,337 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:09:04,338 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-25 00:09:04,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:09:04 BoogieIcfgContainer [2023-11-25 00:09:04,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:09:04,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:09:04,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:09:04,351 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:09:04,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:08:50" (1/3) ... [2023-11-25 00:09:04,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b410d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:09:04, skipping insertion in model container [2023-11-25 00:09:04,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:08:54" (2/3) ... [2023-11-25 00:09:04,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b410d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:09:04, skipping insertion in model container [2023-11-25 00:09:04,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:09:04" (3/3) ... [2023-11-25 00:09:04,357 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-ns83820.cil.i [2023-11-25 00:09:04,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:09:04,385 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-25 00:09:04,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:09:04,521 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;@5a2c2d0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:09:04,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-25 00:09:04,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 1448 states, 806 states have (on average 1.228287841191067) internal successors, (990), 836 states have internal predecessors, (990), 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) [2023-11-25 00:09:04,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-25 00:09:04,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:04,571 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] [2023-11-25 00:09:04,576 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)] === [2023-11-25 00:09:04,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:04,586 INFO L85 PathProgramCache]: Analyzing trace with hash 376917035, now seen corresponding path program 1 times [2023-11-25 00:09:04,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:09:04,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401744701] [2023-11-25 00:09:04,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:04,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:09:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-25 00:09:05,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:09:05,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401744701] [2023-11-25 00:09:05,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401744701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:05,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:05,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:09:05,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273908367] [2023-11-25 00:09:05,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:05,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:09:05,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:09:05,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:09:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:09:05,679 INFO L87 Difference]: Start difference. First operand has 1448 states, 806 states have (on average 1.228287841191067) internal successors, (990), 836 states have internal predecessors, (990), 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) [2023-11-25 00:09:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:10,332 INFO L93 Difference]: Finished difference Result 4251 states and 6184 transitions. [2023-11-25 00:09:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:09:10,335 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 [2023-11-25 00:09:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:10,378 INFO L225 Difference]: With dead ends: 4251 [2023-11-25 00:09:10,378 INFO L226 Difference]: Without dead ends: 2808 [2023-11-25 00:09:10,396 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 [2023-11-25 00:09:10,400 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 1965 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1965 SdHoareTripleChecker+Valid, 3509 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:10,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1965 Valid, 3509 Invalid, 579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-25 00:09:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2023-11-25 00:09:10,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2804. [2023-11-25 00:09:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 1571 states have (on average 1.222151495862508) internal successors, (1920), 1629 states have internal predecessors, (1920), 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) [2023-11-25 00:09:10,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 3963 transitions. [2023-11-25 00:09:10,788 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 3963 transitions. Word has length 87 [2023-11-25 00:09:10,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:10,790 INFO L495 AbstractCegarLoop]: Abstraction has 2804 states and 3963 transitions. [2023-11-25 00:09:10,791 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) [2023-11-25 00:09:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 3963 transitions. [2023-11-25 00:09:10,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-25 00:09:10,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:10,805 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] [2023-11-25 00:09:10,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:09:10,806 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)] === [2023-11-25 00:09:10,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:10,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1061055699, now seen corresponding path program 1 times [2023-11-25 00:09:10,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:09:10,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117629948] [2023-11-25 00:09:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:10,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:09:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-25 00:09:11,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:09:11,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117629948] [2023-11-25 00:09:11,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117629948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:11,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:11,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:09:11,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735504806] [2023-11-25 00:09:11,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:11,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:09:11,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:09:11,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:09:11,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:09:11,182 INFO L87 Difference]: Start difference. First operand 2804 states and 3963 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) [2023-11-25 00:09:15,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:15,165 INFO L93 Difference]: Finished difference Result 7952 states and 11189 transitions. [2023-11-25 00:09:15,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:09:15,166 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 [2023-11-25 00:09:15,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:15,221 INFO L225 Difference]: With dead ends: 7952 [2023-11-25 00:09:15,221 INFO L226 Difference]: Without dead ends: 5163 [2023-11-25 00:09:15,240 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 [2023-11-25 00:09:15,242 INFO L413 NwaCegarLoop]: 1754 mSDtfsCounter, 1687 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 3449 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:15,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 3449 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-25 00:09:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2023-11-25 00:09:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 5132. [2023-11-25 00:09:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5132 states, 2871 states have (on average 1.2121212121212122) internal successors, (3480), 2979 states have internal predecessors, (3480), 1857 states have call successors, (1857), 402 states have call predecessors, (1857), 401 states have return successors, (1860), 1836 states have call predecessors, (1860), 1854 states have call successors, (1860) [2023-11-25 00:09:15,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 7197 transitions. [2023-11-25 00:09:15,767 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 7197 transitions. Word has length 98 [2023-11-25 00:09:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:15,770 INFO L495 AbstractCegarLoop]: Abstraction has 5132 states and 7197 transitions. [2023-11-25 00:09:15,770 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) [2023-11-25 00:09:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 7197 transitions. [2023-11-25 00:09:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-25 00:09:15,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:15,775 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] [2023-11-25 00:09:15,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:09:15,776 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)] === [2023-11-25 00:09:15,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:15,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1715919, now seen corresponding path program 1 times [2023-11-25 00:09:15,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:09:15,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230786520] [2023-11-25 00:09:15,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:15,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:09:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-25 00:09:16,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:09:16,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230786520] [2023-11-25 00:09:16,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230786520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:16,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:16,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:09:16,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020113321] [2023-11-25 00:09:16,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:16,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:09:16,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:09:16,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:09:16,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:09:16,323 INFO L87 Difference]: Start difference. First operand 5132 states and 7197 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) [2023-11-25 00:09:19,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:19,832 INFO L93 Difference]: Finished difference Result 10081 states and 14091 transitions. [2023-11-25 00:09:19,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:09:19,833 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 [2023-11-25 00:09:19,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:19,890 INFO L225 Difference]: With dead ends: 10081 [2023-11-25 00:09:19,891 INFO L226 Difference]: Without dead ends: 4964 [2023-11-25 00:09:19,923 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 [2023-11-25 00:09:19,929 INFO L413 NwaCegarLoop]: 2219 mSDtfsCounter, 1440 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 3927 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:19,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 3927 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-25 00:09:19,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4964 states. [2023-11-25 00:09:20,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4964 to 4936. [2023-11-25 00:09:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4936 states, 2766 states have (on average 1.2042660882140275) internal successors, (3331), 2880 states have internal predecessors, (3331), 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) [2023-11-25 00:09:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4936 states to 4936 states and 6833 transitions. [2023-11-25 00:09:20,351 INFO L78 Accepts]: Start accepts. Automaton has 4936 states and 6833 transitions. Word has length 99 [2023-11-25 00:09:20,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:20,352 INFO L495 AbstractCegarLoop]: Abstraction has 4936 states and 6833 transitions. [2023-11-25 00:09:20,352 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) [2023-11-25 00:09:20,352 INFO L276 IsEmpty]: Start isEmpty. Operand 4936 states and 6833 transitions. [2023-11-25 00:09:20,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-25 00:09:20,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:20,355 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] [2023-11-25 00:09:20,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:09:20,356 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)] === [2023-11-25 00:09:20,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash 298648178, now seen corresponding path program 1 times [2023-11-25 00:09:20,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:09:20,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379304796] [2023-11-25 00:09:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:20,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:09:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:20,822 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-25 00:09:20,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:09:20,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379304796] [2023-11-25 00:09:20,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379304796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:20,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:09:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984311892] [2023-11-25 00:09:20,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:20,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:09:20,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:09:20,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:09:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:09:20,827 INFO L87 Difference]: Start difference. First operand 4936 states and 6833 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) [2023-11-25 00:09:25,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:09:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:26,748 INFO L93 Difference]: Finished difference Result 13555 states and 18770 transitions. [2023-11-25 00:09:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:09:26,749 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 [2023-11-25 00:09:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:26,830 INFO L225 Difference]: With dead ends: 13555 [2023-11-25 00:09:26,830 INFO L226 Difference]: Without dead ends: 8634 [2023-11-25 00:09:26,861 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 [2023-11-25 00:09:26,862 INFO L413 NwaCegarLoop]: 1764 mSDtfsCounter, 1908 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:26,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1908 Valid, 3418 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 573 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-11-25 00:09:26,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8634 states. [2023-11-25 00:09:27,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8634 to 8601. [2023-11-25 00:09:27,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8601 states, 4827 states have (on average 1.2065465092189767) internal successors, (5824), 5034 states have internal predecessors, (5824), 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) [2023-11-25 00:09:27,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8601 states to 8601 states and 11911 transitions. [2023-11-25 00:09:27,643 INFO L78 Accepts]: Start accepts. Automaton has 8601 states and 11911 transitions. Word has length 102 [2023-11-25 00:09:27,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:27,644 INFO L495 AbstractCegarLoop]: Abstraction has 8601 states and 11911 transitions. [2023-11-25 00:09:27,645 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) [2023-11-25 00:09:27,645 INFO L276 IsEmpty]: Start isEmpty. Operand 8601 states and 11911 transitions. [2023-11-25 00:09:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-25 00:09:27,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:27,648 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] [2023-11-25 00:09:27,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:09:27,649 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)] === [2023-11-25 00:09:27,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:27,649 INFO L85 PathProgramCache]: Analyzing trace with hash -638044399, now seen corresponding path program 1 times [2023-11-25 00:09:27,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:09:27,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213150897] [2023-11-25 00:09:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:27,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:09:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-25 00:09:28,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:09:28,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213150897] [2023-11-25 00:09:28,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213150897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:28,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:28,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:09:28,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858396476] [2023-11-25 00:09:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:28,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:09:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:09:28,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:09:28,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:09:28,042 INFO L87 Difference]: Start difference. First operand 8601 states and 11911 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)