./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3bc6b3a88723e5b624538f8d0e562bbcbb838c2bd2dcd71ae870bf42dcd3068b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:05:02,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:05:02,548 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 21:05:02,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:05:02,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:05:02,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:05:02,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:05:02,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:05:02,586 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:05:02,588 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:05:02,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:05:02,589 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:05:02,590 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:05:02,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:05:02,595 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:05:02,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:05:02,597 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:05:02,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:05:02,597 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:05:02,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:05:02,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:05:02,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:05:02,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:05:02,600 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:05:02,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:05:02,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:05:02,601 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:05:02,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:05:02,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:05:02,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:05:02,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:05:02,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:05:02,605 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:05:02,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:05:02,605 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:05:02,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:05:02,606 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:05:02,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:05:02,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:05:02,606 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bc6b3a88723e5b624538f8d0e562bbcbb838c2bd2dcd71ae870bf42dcd3068b [2023-11-21 21:05:02,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:05:02,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:05:02,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:05:02,974 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:05:02,975 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:05:02,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2023-11-21 21:05:06,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:05:07,005 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:05:07,005 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2023-11-21 21:05:07,048 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/data/b6cddf336/5a79703d0e594211855449a18a8249c4/FLAG1994631bb [2023-11-21 21:05:07,062 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/data/b6cddf336/5a79703d0e594211855449a18a8249c4 [2023-11-21 21:05:07,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:05:07,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:05:07,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:05:07,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:05:07,076 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:05:07,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51656856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:07, skipping insertion in model container [2023-11-21 21:05:07,078 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:05:07" (1/1) ... [2023-11-21 21:05:07,264 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:05:10,248 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_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[339479,339492] [2023-11-21 21:05:10,253 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_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[339648,339661] [2023-11-21 21:05:10,254 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_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[339815,339828] [2023-11-21 21:05:10,255 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_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[339983,339996] [2023-11-21 21:05:10,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:05:10,341 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:05:10,562 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"); [5308] [2023-11-21 21:05:10,565 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)); [5315] [2023-11-21 21:05:10,566 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5322] [2023-11-21 21:05:10,570 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/7cdfae59d3ac602223400f61d8829e28/klever-core-work-dir/520b8de/linux-kernel-locking-spinlock/lkbce/arch/x86/include/asm/paravirt.h"), "i" (804), "i" (12UL)); [5377-5378] [2023-11-21 21:05:10,570 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"); [5383-5385] [2023-11-21 21:05:10,585 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %1,%0": "=q" (ret): "m" (*((unsigned char volatile *)addr)): "memory"); [5502] [2023-11-21 21:05:10,586 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5510] [2023-11-21 21:05:10,587 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [5517] [2023-11-21 21:05:10,599 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)); [5645-5646] [2023-11-21 21:05:10,602 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)); [5679-5680] [2023-11-21 21:05:10,604 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)); [5720-5721] [2023-11-21 21:05:10,609 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)); [5749-5750] [2023-11-21 21:05:10,612 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (103), "i" (12UL)); [5786-5787] [2023-11-21 21:05:10,624 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/asm-generic/dma-mapping-common.h"), "i" (115), "i" (12UL)); [5823-5824] [2023-11-21 21:05:10,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6769] [2023-11-21 21:05:10,719 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7540] [2023-11-21 21:05:10,720 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7550] [2023-11-21 21:05:10,721 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [7565] [2023-11-21 21:05:10,774 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8351] [2023-11-21 21:05:10,781 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8384] [2023-11-21 21:05:10,782 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8407] [2023-11-21 21:05:10,798 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8648] [2023-11-21 21:05:10,800 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8678] [2023-11-21 21:05:10,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8691] [2023-11-21 21:05:10,997 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_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[339479,339492] [2023-11-21 21:05:10,998 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_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[339648,339661] [2023-11-21 21:05:10,998 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_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[339815,339828] [2023-11-21 21:05:10,999 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_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[339983,339996] [2023-11-21 21:05:11,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:05:11,206 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:05:11,206 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:05:11,214 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:05:11,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11 WrapperNode [2023-11-21 21:05:11,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:05:11,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:05:11,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:05:11,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:05:11,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (1/1) ... [2023-11-21 21:05:11,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (1/1) ... [2023-11-21 21:05:11,582 INFO L138 Inliner]: procedures = 433, calls = 2151, calls flagged for inlining = 207, calls inlined = 190, statements flattened = 5938 [2023-11-21 21:05:11,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:05:11,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:05:11,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:05:11,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:05:11,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (1/1) ... [2023-11-21 21:05:11,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (1/1) ... [2023-11-21 21:05:11,633 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (1/1) ... [2023-11-21 21:05:13,177 WARN L106 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure #Ultimate.C_strcpy is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2023-11-21 21:05:13,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (1/1) ... [2023-11-21 21:05:13,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (1/1) ... [2023-11-21 21:05:13,329 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (1/1) ... [2023-11-21 21:05:13,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (1/1) ... [2023-11-21 21:05:13,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (1/1) ... [2023-11-21 21:05:13,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (1/1) ... [2023-11-21 21:05:13,495 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:05:13,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:05:13,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:05:13,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:05:13,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (1/1) ... [2023-11-21 21:05:13,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:05:13,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:05:13,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:05:13,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4a0401-9d37-4344-b9d8-238b6fc0f97e/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:05:13,592 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-21 21:05:13,593 INFO L130 BoogieDeclarations]: Found specification of procedure BB_GET_BIT2 [2023-11-21 21:05:13,593 INFO L138 BoogieDeclarations]: Found implementation of procedure BB_GET_BIT2 [2023-11-21 21:05:13,593 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2023-11-21 21:05:13,593 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2023-11-21 21:05:13,593 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-21 21:05:13,594 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-21 21:05:13,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-21 21:05:13,594 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-21 21:05:13,594 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_open [2023-11-21 21:05:13,594 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_open [2023-11-21 21:05:13,594 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_poll_stop [2023-11-21 21:05:13,595 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_poll_stop [2023-11-21 21:05:13,595 INFO L130 BoogieDeclarations]: Found specification of procedure is_quattro_p [2023-11-21 21:05:13,595 INFO L138 BoogieDeclarations]: Found implementation of procedure is_quattro_p [2023-11-21 21:05:13,595 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-21 21:05:13,595 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-21 21:05:13,595 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_close [2023-11-21 21:05:13,596 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_close [2023-11-21 21:05:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 21:05:13,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 21:05:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-21 21:05:13,596 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-21 21:05:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-21 21:05:13,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-21 21:05:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_set_multicast [2023-11-21 21:05:13,597 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_set_multicast [2023-11-21 21:05:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-21 21:05:13,597 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-21 21:05:13,598 INFO L130 BoogieDeclarations]: Found specification of procedure BB_PUT_BIT [2023-11-21 21:05:13,598 INFO L138 BoogieDeclarations]: Found implementation of procedure BB_PUT_BIT [2023-11-21 21:05:13,598 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2023-11-21 21:05:13,599 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2023-11-21 21:05:13,599 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_begin_auto_negotiation [2023-11-21 21:05:13,600 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_begin_auto_negotiation [2023-11-21 21:05:13,600 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_get_counters [2023-11-21 21:05:13,600 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_get_counters [2023-11-21 21:05:13,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_happy_lock_of_happy_meal [2023-11-21 21:05:13,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_happy_lock_of_happy_meal [2023-11-21 21:05:13,601 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-21 21:05:13,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-21 21:05:13,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-21 21:05:13,601 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-21 21:05:13,602 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-21 21:05:13,603 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-21 21:05:13,603 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-21 21:05:13,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2023-11-21 21:05:13,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2023-11-21 21:05:13,603 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-21 21:05:13,603 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-21 21:05:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-21 21:05:13,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-21 21:05:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:05:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-21 21:05:13,604 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-21 21:05:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_happy_lock_of_happy_meal [2023-11-21 21:05:13,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_happy_lock_of_happy_meal [2023-11-21 21:05:13,605 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-21 21:05:13,606 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-21 21:05:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 21:05:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-21 21:05:13,606 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-21 21:05:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 21:05:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-21 21:05:13,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-21 21:05:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 21:05:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-21 21:05:13,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-21 21:05:13,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-21 21:05:13,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-21 21:05:13,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-21 21:05:13,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-21 21:05:13,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-21 21:05:13,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-21 21:05:13,609 INFO L130 BoogieDeclarations]: Found specification of procedure set_happy_link_modes [2023-11-21 21:05:13,609 INFO L138 BoogieDeclarations]: Found implementation of procedure set_happy_link_modes [2023-11-21 21:05:13,609 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tcvr_reset [2023-11-21 21:05:13,609 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tcvr_reset [2023-11-21 21:05:13,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-21 21:05:13,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-21 21:05:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 21:05:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tx_timeout [2023-11-21 21:05:13,610 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tx_timeout [2023-11-21 21:05:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2023-11-21 21:05:13,611 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2023-11-21 21:05:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:05:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tcvr_read [2023-11-21 21:05:13,612 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tcvr_read [2023-11-21 21:05:13,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-21 21:05:13,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-21 21:05:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-21 21:05:13,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-21 21:05:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 21:05:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 21:05:13,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 21:05:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-21 21:05:13,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-21 21:05:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-21 21:05:13,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-21 21:05:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2023-11-21 21:05:13,614 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2023-11-21 21:05:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-21 21:05:13,615 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-21 21:05:13,615 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-21 21:05:13,615 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-21 21:05:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-21 21:05:13,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-21 21:05:13,617 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-21 21:05:13,617 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-21 21:05:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure is_lucent_phy [2023-11-21 21:05:13,618 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lucent_phy [2023-11-21 21:05:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:05:13,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:05:13,618 INFO L130 BoogieDeclarations]: Found specification of procedure hme_read_desc32 [2023-11-21 21:05:13,618 INFO L138 BoogieDeclarations]: Found implementation of procedure hme_read_desc32 [2023-11-21 21:05:13,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-21 21:05:13,619 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-21 21:05:13,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 21:05:13,621 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_clean_rings [2023-11-21 21:05:13,624 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_clean_rings [2023-11-21 21:05:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 21:05:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-21 21:05:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-21 21:05:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-21 21:05:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-21 21:05:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-21 21:05:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-21 21:05:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2023-11-21 21:05:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2023-11-21 21:05:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-21 21:05:13,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-21 21:05:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 21:05:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 21:05:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-21 21:05:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-21 21:05:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-21 21:05:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-21 21:05:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2023-11-21 21:05:13,635 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2023-11-21 21:05:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2023-11-21 21:05:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2023-11-21 21:05:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:05:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 21:05:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-21 21:05:13,636 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-21 21:05:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 21:05:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-21 21:05:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-21 21:05:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-21 21:05:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-21 21:05:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_stop [2023-11-21 21:05:13,637 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_stop [2023-11-21 21:05:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-21 21:05:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-21 21:05:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-21 21:05:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-21 21:05:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-21 21:05:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-21 21:05:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_pci_remove [2023-11-21 21:05:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_pci_remove [2023-11-21 21:05:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_63 [2023-11-21 21:05:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_63 [2023-11-21 21:05:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_init [2023-11-21 21:05:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_init [2023-11-21 21:05:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-11-21 21:05:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-11-21 21:05:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-21 21:05:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-21 21:05:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_tcvr_write [2023-11-21 21:05:13,640 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_tcvr_write [2023-11-21 21:05:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 21:05:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-21 21:05:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-21 21:05:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2023-11-21 21:05:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2023-11-21 21:05:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_64 [2023-11-21 21:05:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_64 [2023-11-21 21:05:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-21 21:05:13,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-21 21:05:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-21 21:05:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-21 21:05:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2023-11-21 21:05:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2023-11-21 21:05:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-21 21:05:13,642 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-21 21:05:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 21:05:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2023-11-21 21:05:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2023-11-21 21:05:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-21 21:05:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-21 21:05:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2023-11-21 21:05:13,643 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2023-11-21 21:05:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure happy_meal_transceiver_check [2023-11-21 21:05:13,645 INFO L138 BoogieDeclarations]: Found implementation of procedure happy_meal_transceiver_check [2023-11-21 21:05:14,503 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:05:14,513 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:05:15,284 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-21 21:05:21,830 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:05:27,483 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:05:27,484 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 21:05:27,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:27 BoogieIcfgContainer [2023-11-21 21:05:27,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:05:27,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:05:27,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:05:27,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:05:27,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:05:07" (1/3) ... [2023-11-21 21:05:27,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2ebef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:05:27, skipping insertion in model container [2023-11-21 21:05:27,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:05:11" (2/3) ... [2023-11-21 21:05:27,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2ebef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:05:27, skipping insertion in model container [2023-11-21 21:05:27,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:05:27" (3/3) ... [2023-11-21 21:05:27,503 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2023-11-21 21:05:27,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:05:27,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-21 21:05:27,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:05:27,656 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=PETRI_NET, 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;@50b6e25f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:05:27,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-21 21:05:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 1651 states, 956 states have (on average 1.288702928870293) internal successors, (1232), 1001 states have internal predecessors, (1232), 604 states have call successors, (604), 88 states have call predecessors, (604), 87 states have return successors, (600), 589 states have call predecessors, (600), 600 states have call successors, (600) [2023-11-21 21:05:27,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-21 21:05:27,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:05:27,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:05:27,692 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)] === [2023-11-21 21:05:27,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:27,707 INFO L85 PathProgramCache]: Analyzing trace with hash 409067382, now seen corresponding path program 1 times [2023-11-21 21:05:27,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:05:27,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83067468] [2023-11-21 21:05:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:27,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:05:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 21:05:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:28,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:05:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:28,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-21 21:05:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:28,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 21:05:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-21 21:05:28,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:05:28,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83067468] [2023-11-21 21:05:28,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83067468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:05:28,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:05:28,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:05:28,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910861585] [2023-11-21 21:05:28,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:05:28,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:05:28,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:05:28,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:05:28,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:05:28,572 INFO L87 Difference]: Start difference. First operand has 1651 states, 956 states have (on average 1.288702928870293) internal successors, (1232), 1001 states have internal predecessors, (1232), 604 states have call successors, (604), 88 states have call predecessors, (604), 87 states have return successors, (600), 589 states have call predecessors, (600), 600 states have call successors, (600) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 21:05:30,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:05:32,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:05:32,250 INFO L93 Difference]: Finished difference Result 3279 states and 4900 transitions. [2023-11-21 21:05:32,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:05:32,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2023-11-21 21:05:32,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:05:32,292 INFO L225 Difference]: With dead ends: 3279 [2023-11-21 21:05:32,292 INFO L226 Difference]: Without dead ends: 1640 [2023-11-21 21:05:32,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:05:32,315 INFO L413 NwaCegarLoop]: 2135 mSDtfsCounter, 313 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:05:32,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 3899 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-21 21:05:32,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2023-11-21 21:05:32,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2023-11-21 21:05:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 951 states have (on average 1.2818086225026288) internal successors, (1219), 995 states have internal predecessors, (1219), 600 states have call successors, (600), 87 states have call predecessors, (600), 86 states have return successors, (597), 586 states have call predecessors, (597), 597 states have call successors, (597) [2023-11-21 21:05:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2416 transitions. [2023-11-21 21:05:32,532 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2416 transitions. Word has length 26 [2023-11-21 21:05:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:05:32,532 INFO L495 AbstractCegarLoop]: Abstraction has 1640 states and 2416 transitions. [2023-11-21 21:05:32,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 21:05:32,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2416 transitions. [2023-11-21 21:05:32,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 21:05:32,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:05:32,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-21 21:05:32,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:05:32,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-21 21:05:32,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:32,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2055947756, now seen corresponding path program 1 times [2023-11-21 21:05:32,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:05:32,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677282626] [2023-11-21 21:05:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:32,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:05:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:33,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:05:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:33,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 21:05:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:33,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:05:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:33,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:05:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:33,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 21:05:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:33,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-21 21:05:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 21:05:33,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:05:33,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677282626] [2023-11-21 21:05:33,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677282626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:05:33,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:05:33,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:05:33,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145000220] [2023-11-21 21:05:33,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:05:33,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:05:33,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:05:33,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:05:33,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:05:33,279 INFO L87 Difference]: Start difference. First operand 1640 states and 2416 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 21:05:36,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:05:38,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:05:40,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:05:40,710 INFO L93 Difference]: Finished difference Result 1646 states and 2421 transitions. [2023-11-21 21:05:40,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:05:40,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2023-11-21 21:05:40,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:05:40,729 INFO L225 Difference]: With dead ends: 1646 [2023-11-21 21:05:40,729 INFO L226 Difference]: Without dead ends: 1644 [2023-11-21 21:05:40,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:05:40,733 INFO L413 NwaCegarLoop]: 2119 mSDtfsCounter, 2397 mSDsluCounter, 4223 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:05:40,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2409 Valid, 6342 Invalid, 904 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 902 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2023-11-21 21:05:40,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2023-11-21 21:05:41,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1644. [2023-11-21 21:05:41,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 954 states have (on average 1.280922431865828) internal successors, (1222), 998 states have internal predecessors, (1222), 600 states have call successors, (600), 88 states have call predecessors, (600), 87 states have return successors, (597), 586 states have call predecessors, (597), 597 states have call successors, (597) [2023-11-21 21:05:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2419 transitions. [2023-11-21 21:05:41,046 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2419 transitions. Word has length 37 [2023-11-21 21:05:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:05:41,048 INFO L495 AbstractCegarLoop]: Abstraction has 1644 states and 2419 transitions. [2023-11-21 21:05:41,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 21:05:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2419 transitions. [2023-11-21 21:05:41,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-21 21:05:41,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:05:41,053 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-21 21:05:41,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:05:41,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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)] === [2023-11-21 21:05:41,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:41,055 INFO L85 PathProgramCache]: Analyzing trace with hash -24978152, now seen corresponding path program 1 times [2023-11-21 21:05:41,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:05:41,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764397086] [2023-11-21 21:05:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:41,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:05:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:05:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:41,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 21:05:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:41,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:05:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:41,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:05:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:41,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 21:05:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:41,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-21 21:05:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:41,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 21:05:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 21:05:41,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:05:41,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764397086] [2023-11-21 21:05:41,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764397086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:05:41,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:05:41,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:05:41,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861899405] [2023-11-21 21:05:41,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:05:41,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:05:41,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:05:41,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:05:41,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:05:41,691 INFO L87 Difference]: Start difference. First operand 1644 states and 2419 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 21:05:44,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:05:46,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:05:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:05:48,426 INFO L93 Difference]: Finished difference Result 1650 states and 2424 transitions. [2023-11-21 21:05:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:05:48,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-11-21 21:05:48,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:05:48,444 INFO L225 Difference]: With dead ends: 1650 [2023-11-21 21:05:48,444 INFO L226 Difference]: Without dead ends: 1648 [2023-11-21 21:05:48,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:05:48,447 INFO L413 NwaCegarLoop]: 2122 mSDtfsCounter, 2392 mSDsluCounter, 4223 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 6345 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-21 21:05:48,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2403 Valid, 6345 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 902 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2023-11-21 21:05:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2023-11-21 21:05:48,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2023-11-21 21:05:48,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 957 states have (on average 1.2800417972831766) internal successors, (1225), 1001 states have internal predecessors, (1225), 600 states have call successors, (600), 89 states have call predecessors, (600), 88 states have return successors, (597), 586 states have call predecessors, (597), 597 states have call successors, (597) [2023-11-21 21:05:48,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2422 transitions. [2023-11-21 21:05:48,592 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2422 transitions. Word has length 42 [2023-11-21 21:05:48,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:05:48,593 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2422 transitions. [2023-11-21 21:05:48,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 21:05:48,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2422 transitions. [2023-11-21 21:05:48,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-21 21:05:48,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:05:48,596 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-21 21:05:48,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:05:48,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-21 21:05:48,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:48,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2010893569, now seen corresponding path program 1 times [2023-11-21 21:05:48,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:05:48,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36130213] [2023-11-21 21:05:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:48,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:05:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:49,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:05:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:49,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 21:05:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:49,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:05:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:49,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:05:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 21:05:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:49,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-21 21:05:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 21:05:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:49,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 21:05:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 21:05:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-21 21:05:49,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:05:49,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36130213] [2023-11-21 21:05:49,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36130213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:05:49,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:05:49,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:05:49,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256869396] [2023-11-21 21:05:49,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:05:49,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:05:49,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:05:49,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:05:49,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:05:49,298 INFO L87 Difference]: Start difference. First operand 1648 states and 2422 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9)