./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:18:44,638 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:18:44,719 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:18:44,733 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:18:44,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:18:44,767 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:18:44,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:18:44,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:18:44,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:18:44,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:18:44,774 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:18:44,774 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:18:44,775 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:18:44,776 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:18:44,777 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:18:44,777 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:18:44,778 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:18:44,778 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:18:44,778 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:18:44,779 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:18:44,779 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:18:44,781 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:18:44,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:18:44,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:18:44,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:18:44,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:18:44,784 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:18:44,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:18:44,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:18:44,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:18:44,787 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:18:44,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:18:44,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:18:44,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:18:44,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:44,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:18:44,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:18:44,789 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:18:44,789 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:18:44,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:18:44,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:18:44,790 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:18:44,790 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:18:44,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:18:44,791 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_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08a377ea5583d5b51d35b7880dbbb43c3783bcaabfa79c83938a2c0ac78e3f7a [2023-11-23 21:18:45,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:18:45,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:18:45,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:18:45,104 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:18:45,104 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:18:45,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2023-11-23 21:18:48,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:48,942 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:48,943 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2023-11-23 21:18:49,004 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/data/3fe564693/204a7361207e44209a709b3bd30668d5/FLAGc925a3305 [2023-11-23 21:18:49,027 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/data/3fe564693/204a7361207e44209a709b3bd30668d5 [2023-11-23 21:18:49,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:49,034 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:49,039 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:49,039 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:49,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:49,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:49" (1/1) ... [2023-11-23 21:18:49,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176fcf27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:49, skipping insertion in model container [2023-11-23 21:18:49,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:49" (1/1) ... [2023-11-23 21:18:49,291 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:52,536 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_68694930-8b1f-4f85-8003-d401482c66f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2023-11-23 21:18:52,541 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_68694930-8b1f-4f85-8003-d401482c66f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2023-11-23 21:18:52,542 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_68694930-8b1f-4f85-8003-d401482c66f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2023-11-23 21:18:52,543 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_68694930-8b1f-4f85-8003-d401482c66f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2023-11-23 21:18:52,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:52,688 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:18:52,827 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"); [5247] [2023-11-23 21:18:52,829 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)); [5254] [2023-11-23 21:18:52,830 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5261] [2023-11-23 21:18:52,832 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)); [5305-5306] [2023-11-23 21:18:52,832 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"); [5311-5313] [2023-11-23 21:18:52,842 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)); [5517-5518] [2023-11-23 21:18:52,844 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)); [5551-5552] [2023-11-23 21:18:52,846 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)); [5588-5589] [2023-11-23 21:18:52,847 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)); [5625-5626] [2023-11-23 21:18:52,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/netdevice.h"), "i" (502), "i" (12UL)); [5890-5891] [2023-11-23 21:18:52,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [5897] [2023-11-23 21:18:52,896 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6716] [2023-11-23 21:18:52,900 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6768] [2023-11-23 21:18:53,132 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_68694930-8b1f-4f85-8003-d401482c66f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[331922,331935] [2023-11-23 21:18:53,133 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_68694930-8b1f-4f85-8003-d401482c66f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332091,332104] [2023-11-23 21:18:53,133 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_68694930-8b1f-4f85-8003-d401482c66f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332258,332271] [2023-11-23 21:18:53,134 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_68694930-8b1f-4f85-8003-d401482c66f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i[332426,332439] [2023-11-23 21:18:53,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:53,401 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:53,409 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:18:53,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53 WrapperNode [2023-11-23 21:18:53,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:53,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:53,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:18:53,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:18:53,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53" (1/1) ... [2023-11-23 21:18:53,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53" (1/1) ... [2023-11-23 21:18:53,820 INFO L138 Inliner]: procedures = 451, calls = 2224, calls flagged for inlining = 222, calls inlined = 196, statements flattened = 5139 [2023-11-23 21:18:53,821 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:53,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:18:53,822 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:18:53,822 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:18:53,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53" (1/1) ... [2023-11-23 21:18:53,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53" (1/1) ... [2023-11-23 21:18:53,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53" (1/1) ... [2023-11-23 21:18:53,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53" (1/1) ... [2023-11-23 21:18:54,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53" (1/1) ... [2023-11-23 21:18:54,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53" (1/1) ... [2023-11-23 21:18:54,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53" (1/1) ... [2023-11-23 21:18:54,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53" (1/1) ... [2023-11-23 21:18:54,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:18:54,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:18:54,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:18:54,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:18:54,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53" (1/1) ... [2023-11-23 21:18:54,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:54,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:54,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:18:54,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68694930-8b1f-4f85-8003-d401482c66f2/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:18:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2023-11-23 21:18:54,193 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2023-11-23 21:18:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-23 21:18:54,194 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-23 21:18:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:18:54,194 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:18:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_begin [2023-11-23 21:18:54,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_begin [2023-11-23 21:18:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-11-23 21:18:54,195 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-11-23 21:18:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-23 21:18:54,195 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-23 21:18:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:18:54,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:18:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:18:54,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:18:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-23 21:18:54,196 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-23 21:18:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-23 21:18:54,196 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-23 21:18:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2023-11-23 21:18:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2023-11-23 21:18:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_73 [2023-11-23 21:18:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_73 [2023-11-23 21:18:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-11-23 21:18:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-11-23 21:18:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-23 21:18:54,198 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-23 21:18:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:18:54,198 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:18:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-11-23 21:18:54,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-11-23 21:18:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:18:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2023-11-23 21:18:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2023-11-23 21:18:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:18:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:18:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-23 21:18:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-23 21:18:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2023-11-23 21:18:54,200 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2023-11-23 21:18:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-23 21:18:54,200 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-23 21:18:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:18:54,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:18:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:18:54,200 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:18:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-23 21:18:54,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-23 21:18:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:18:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:18:54,201 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:18:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-23 21:18:54,201 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-23 21:18:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:18:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 21:18:54,202 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 21:18:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:18:54,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:18:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:18:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:18:54,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:18:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:18:54,203 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:18:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure epic_open [2023-11-23 21:18:54,203 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_open [2023-11-23 21:18:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:18:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2023-11-23 21:18:54,204 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2023-11-23 21:18:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-23 21:18:54,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-23 21:18:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:18:54,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:18:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-23 21:18:54,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-23 21:18:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:18:54,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:18:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-23 21:18:54,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-23 21:18:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-23 21:18:54,205 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-23 21:18:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-23 21:18:54,205 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-23 21:18:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure epic_restart [2023-11-23 21:18:54,206 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_restart [2023-11-23 21:18:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_epic_cleanup_14_2 [2023-11-23 21:18:54,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_epic_cleanup_14_2 [2023-11-23 21:18:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:18:54,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:18:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:18:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-23 21:18:54,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-23 21:18:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-23 21:18:54,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-23 21:18:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:18:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2023-11-23 21:18:54,207 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2023-11-23 21:18:54,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:18:54,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:18:54,209 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:18:54,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:18:54,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:18:54,209 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2023-11-23 21:18:54,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2023-11-23 21:18:54,210 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:18:54,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:18:54,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_epic_private [2023-11-23 21:18:54,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_epic_private [2023-11-23 21:18:54,210 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2023-11-23 21:18:54,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2023-11-23 21:18:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-23 21:18:54,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2023-11-23 21:18:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-23 21:18:54,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-23 21:18:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2023-11-23 21:18:54,212 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2023-11-23 21:18:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:18:54,212 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:18:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure epic_remove_one [2023-11-23 21:18:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_remove_one [2023-11-23 21:18:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-23 21:18:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-23 21:18:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-23 21:18:54,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-23 21:18:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_napi_lock_of_epic_private [2023-11-23 21:18:54,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_napi_lock_of_epic_private [2023-11-23 21:18:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 21:18:54,217 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 21:18:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2023-11-23 21:18:54,220 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2023-11-23 21:18:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:18:54,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:18:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:18:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:18:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:18:54,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:18:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:18:54,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:18:54,227 INFO L130 BoogieDeclarations]: Found specification of procedure epic_rx [2023-11-23 21:18:54,228 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_rx [2023-11-23 21:18:54,228 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_complete [2023-11-23 21:18:54,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_complete [2023-11-23 21:18:54,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-23 21:18:54,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-23 21:18:54,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_napi_lock_of_epic_private [2023-11-23 21:18:54,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_napi_lock_of_epic_private [2023-11-23 21:18:54,229 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-23 21:18:54,230 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-23 21:18:54,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:18:54,230 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:18:54,230 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:18:54,231 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:18:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-23 21:18:54,231 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-23 21:18:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-23 21:18:54,231 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-23 21:18:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:18:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_72 [2023-11-23 21:18:54,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_72 [2023-11-23 21:18:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure epic_resume [2023-11-23 21:18:54,232 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_resume [2023-11-23 21:18:54,233 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-23 21:18:54,233 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-23 21:18:54,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:18:54,233 INFO L130 BoogieDeclarations]: Found specification of procedure epic_tx_timeout [2023-11-23 21:18:54,233 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_tx_timeout [2023-11-23 21:18:54,233 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-23 21:18:54,234 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-23 21:18:54,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:18:54,234 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:18:54,234 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:18:54,234 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:18:54,234 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:18:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-23 21:18:54,235 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-23 21:18:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:18:54,235 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:18:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:18:54,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:18:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-11-23 21:18:54,236 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-11-23 21:18:54,236 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-23 21:18:54,236 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-23 21:18:54,236 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:18:54,236 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:18:54,236 INFO L130 BoogieDeclarations]: Found specification of procedure epic_close [2023-11-23 21:18:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_close [2023-11-23 21:18:54,237 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 21:18:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 21:18:54,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:18:54,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:18:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:18:54,238 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-23 21:18:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-23 21:18:54,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_epic_private [2023-11-23 21:18:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_epic_private [2023-11-23 21:18:54,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:18:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:18:54,239 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2023-11-23 21:18:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2023-11-23 21:18:54,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:18:54,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:18:54,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:18:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure epic_pause [2023-11-23 21:18:54,241 INFO L138 BoogieDeclarations]: Found implementation of procedure epic_pause [2023-11-23 21:18:55,121 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:18:55,126 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:18:55,722 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:18:59,326 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 21:18:59,500 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:19:01,816 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:19:01,817 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:19:01,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:19:01 BoogieIcfgContainer [2023-11-23 21:19:01,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:19:01,823 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:19:01,823 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:19:01,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:19:01,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:18:49" (1/3) ... [2023-11-23 21:19:01,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3655cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:19:01, skipping insertion in model container [2023-11-23 21:19:01,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:53" (2/3) ... [2023-11-23 21:19:01,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3655cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:19:01, skipping insertion in model container [2023-11-23 21:19:01,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:19:01" (3/3) ... [2023-11-23 21:19:01,833 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-epic100.cil.i [2023-11-23 21:19:01,860 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:19:01,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-23 21:19:01,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:19:02,006 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;@2ff67cbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:19:02,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 21:19:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 1339 states, 773 states have (on average 1.2897800776196637) internal successors, (997), 798 states have internal predecessors, (997), 470 states have call successors, (470), 94 states have call predecessors, (470), 93 states have return successors, (464), 459 states have call predecessors, (464), 464 states have call successors, (464) [2023-11-23 21:19:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 21:19:02,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:02,055 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:02,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:19:02,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:02,063 INFO L85 PathProgramCache]: Analyzing trace with hash 571876621, now seen corresponding path program 1 times [2023-11-23 21:19:02,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:02,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984994279] [2023-11-23 21:19:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:02,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-11-23 21:19:03,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:03,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984994279] [2023-11-23 21:19:03,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984994279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:03,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:03,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:19:03,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187317994] [2023-11-23 21:19:03,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:03,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:19:03,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:03,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:19:03,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:03,225 INFO L87 Difference]: Start difference. First operand has 1339 states, 773 states have (on average 1.2897800776196637) internal successors, (997), 798 states have internal predecessors, (997), 470 states have call successors, (470), 94 states have call predecessors, (470), 93 states have return successors, (464), 459 states have call predecessors, (464), 464 states have call successors, (464) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 21:19:05,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:05,146 INFO L93 Difference]: Finished difference Result 3902 states and 5675 transitions. [2023-11-23 21:19:05,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:19:05,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2023-11-23 21:19:05,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:05,188 INFO L225 Difference]: With dead ends: 3902 [2023-11-23 21:19:05,189 INFO L226 Difference]: Without dead ends: 2572 [2023-11-23 21:19:05,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:05,204 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 1812 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 3273 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:05,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 3273 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 21:19:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2023-11-23 21:19:05,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2568. [2023-11-23 21:19:05,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2568 states, 1498 states have (on average 1.2837116154873165) internal successors, (1923), 1547 states have internal predecessors, (1923), 885 states have call successors, (885), 183 states have call predecessors, (885), 182 states have return successors, (881), 871 states have call predecessors, (881), 881 states have call successors, (881) [2023-11-23 21:19:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3689 transitions. [2023-11-23 21:19:05,539 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3689 transitions. Word has length 111 [2023-11-23 21:19:05,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:05,541 INFO L495 AbstractCegarLoop]: Abstraction has 2568 states and 3689 transitions. [2023-11-23 21:19:05,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 21:19:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3689 transitions. [2023-11-23 21:19:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 21:19:05,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:05,548 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:05,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:19:05,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:19:05,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1559251992, now seen corresponding path program 1 times [2023-11-23 21:19:05,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:05,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833408423] [2023-11-23 21:19:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:05,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-11-23 21:19:05,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:05,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833408423] [2023-11-23 21:19:05,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833408423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:05,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:05,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:19:05,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037478838] [2023-11-23 21:19:05,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:05,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:19:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:05,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:19:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:05,938 INFO L87 Difference]: Start difference. First operand 2568 states and 3689 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 21:19:08,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:08,014 INFO L93 Difference]: Finished difference Result 7324 states and 10491 transitions. [2023-11-23 21:19:08,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:19:08,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 119 [2023-11-23 21:19:08,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:08,070 INFO L225 Difference]: With dead ends: 7324 [2023-11-23 21:19:08,070 INFO L226 Difference]: Without dead ends: 4775 [2023-11-23 21:19:08,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:08,089 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 1619 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:08,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 3220 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 21:19:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2023-11-23 21:19:08,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4745. [2023-11-23 21:19:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4745 states, 2770 states have (on average 1.2740072202166064) internal successors, (3529), 2866 states have internal predecessors, (3529), 1627 states have call successors, (1627), 348 states have call predecessors, (1627), 345 states have return successors, (1625), 1594 states have call predecessors, (1625), 1623 states have call successors, (1625) [2023-11-23 21:19:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 6781 transitions. [2023-11-23 21:19:08,538 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 6781 transitions. Word has length 119 [2023-11-23 21:19:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:08,539 INFO L495 AbstractCegarLoop]: Abstraction has 4745 states and 6781 transitions. [2023-11-23 21:19:08,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 21:19:08,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 6781 transitions. [2023-11-23 21:19:08,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-23 21:19:08,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:08,545 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:08,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:19:08,546 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:19:08,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:08,546 INFO L85 PathProgramCache]: Analyzing trace with hash 129280, now seen corresponding path program 1 times [2023-11-23 21:19:08,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:08,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088335504] [2023-11-23 21:19:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:08,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-11-23 21:19:09,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:09,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088335504] [2023-11-23 21:19:09,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088335504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:09,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:09,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:19:09,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094462920] [2023-11-23 21:19:09,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:09,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:19:09,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:09,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:19:09,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:09,142 INFO L87 Difference]: Start difference. First operand 4745 states and 6781 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 21:19:11,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:11,565 INFO L93 Difference]: Finished difference Result 13765 states and 19657 transitions. [2023-11-23 21:19:11,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:19:11,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2023-11-23 21:19:11,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:11,657 INFO L225 Difference]: With dead ends: 13765 [2023-11-23 21:19:11,658 INFO L226 Difference]: Without dead ends: 9039 [2023-11-23 21:19:11,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:19:11,691 INFO L413 NwaCegarLoop]: 1805 mSDtfsCounter, 1755 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:11,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1755 Valid, 3382 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 21:19:11,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9039 states. [2023-11-23 21:19:12,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9039 to 9005. [2023-11-23 21:19:12,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9005 states, 5268 states have (on average 1.2727790432801822) internal successors, (6705), 5452 states have internal predecessors, (6705), 3067 states have call successors, (3067), 678 states have call predecessors, (3067), 667 states have return successors, (3077), 2986 states have call predecessors, (3077), 3063 states have call successors, (3077) [2023-11-23 21:19:12,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9005 states to 9005 states and 12849 transitions. [2023-11-23 21:19:12,611 INFO L78 Accepts]: Start accepts. Automaton has 9005 states and 12849 transitions. Word has length 125 [2023-11-23 21:19:12,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:12,613 INFO L495 AbstractCegarLoop]: Abstraction has 9005 states and 12849 transitions. [2023-11-23 21:19:12,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 21:19:12,615 INFO L276 IsEmpty]: Start isEmpty. Operand 9005 states and 12849 transitions. [2023-11-23 21:19:12,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-23 21:19:12,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:12,623 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:12,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:19:12,624 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)] === [2023-11-23 21:19:12,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash 809132471, now seen corresponding path program 1 times [2023-11-23 21:19:12,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:12,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114035368] [2023-11-23 21:19:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:12,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:13,450 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-11-23 21:19:13,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:13,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114035368] [2023-11-23 21:19:13,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114035368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:13,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:13,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:19:13,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344424206] [2023-11-23 21:19:13,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:13,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:19:13,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:13,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:19:13,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:19:13,454 INFO L87 Difference]: Start difference. First operand 9005 states and 12849 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:19:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:15,340 INFO L93 Difference]: Finished difference Result 9011 states and 12854 transitions. [2023-11-23 21:19:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:19:15,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2023-11-23 21:19:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:15,431 INFO L225 Difference]: With dead ends: 9011 [2023-11-23 21:19:15,432 INFO L226 Difference]: Without dead ends: 9009 [2023-11-23 21:19:15,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:19:15,445 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 1856 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 4872 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:15,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1868 Valid, 4872 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 21:19:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9009 states. [2023-11-23 21:19:16,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9009 to 9009. [2023-11-23 21:19:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9009 states, 5271 states have (on average 1.2726237905520774) internal successors, (6708), 5455 states have internal predecessors, (6708), 3067 states have call successors, (3067), 679 states have call predecessors, (3067), 668 states have return successors, (3077), 2986 states have call predecessors, (3077), 3063 states have call successors, (3077) [2023-11-23 21:19:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9009 states to 9009 states and 12852 transitions. [2023-11-23 21:19:16,384 INFO L78 Accepts]: Start accepts. Automaton has 9009 states and 12852 transitions. Word has length 157 [2023-11-23 21:19:16,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:16,386 INFO L495 AbstractCegarLoop]: Abstraction has 9009 states and 12852 transitions. [2023-11-23 21:19:16,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:19:16,386 INFO L276 IsEmpty]: Start isEmpty. Operand 9009 states and 12852 transitions. [2023-11-23 21:19:16,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 21:19:16,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:16,395 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:16,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:19:16,396 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:19:16,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:16,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1654747566, now seen corresponding path program 1 times [2023-11-23 21:19:16,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:16,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120302193] [2023-11-23 21:19:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:16,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2023-11-23 21:19:17,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:17,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120302193] [2023-11-23 21:19:17,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120302193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:17,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:17,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:19:17,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814892404] [2023-11-23 21:19:17,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:17,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:19:17,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:17,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:19:17,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:19:17,151 INFO L87 Difference]: Start difference. First operand 9009 states and 12852 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:19:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:19,269 INFO L93 Difference]: Finished difference Result 9015 states and 12857 transitions. [2023-11-23 21:19:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:19:19,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 166 [2023-11-23 21:19:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:19,346 INFO L225 Difference]: With dead ends: 9015 [2023-11-23 21:19:19,346 INFO L226 Difference]: Without dead ends: 9013 [2023-11-23 21:19:19,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:19:19,357 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1850 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 4875 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:19,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1861 Valid, 4875 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 21:19:19,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9013 states. [2023-11-23 21:19:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9013 to 9013. [2023-11-23 21:19:20,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9013 states, 5274 states have (on average 1.2724687144482367) internal successors, (6711), 5458 states have internal predecessors, (6711), 3067 states have call successors, (3067), 680 states have call predecessors, (3067), 669 states have return successors, (3077), 2986 states have call predecessors, (3077), 3063 states have call successors, (3077) [2023-11-23 21:19:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9013 states to 9013 states and 12855 transitions. [2023-11-23 21:19:20,392 INFO L78 Accepts]: Start accepts. Automaton has 9013 states and 12855 transitions. Word has length 166 [2023-11-23 21:19:20,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:20,393 INFO L495 AbstractCegarLoop]: Abstraction has 9013 states and 12855 transitions. [2023-11-23 21:19:20,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 21:19:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 9013 states and 12855 transitions. [2023-11-23 21:19:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-23 21:19:20,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:20,406 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:20,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:19:20,407 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:19:20,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:20,408 INFO L85 PathProgramCache]: Analyzing trace with hash -442955800, now seen corresponding path program 1 times [2023-11-23 21:19:20,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:20,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674335062] [2023-11-23 21:19:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:20,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2023-11-23 21:19:21,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:21,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674335062] [2023-11-23 21:19:21,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674335062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:21,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:21,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:19:21,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653153273] [2023-11-23 21:19:21,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:21,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:19:21,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:21,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:19:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:19:21,336 INFO L87 Difference]: Start difference. First operand 9013 states and 12855 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 21:19:24,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:24,170 INFO L93 Difference]: Finished difference Result 9019 states and 12860 transitions. [2023-11-23 21:19:24,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:19:24,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 171 [2023-11-23 21:19:24,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:24,235 INFO L225 Difference]: With dead ends: 9019 [2023-11-23 21:19:24,236 INFO L226 Difference]: Without dead ends: 9017 [2023-11-23 21:19:24,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:19:24,247 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1850 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 4875 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:24,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 4875 Invalid, 844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 21:19:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9017 states. [2023-11-23 21:19:25,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9017 to 9017. [2023-11-23 21:19:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9017 states, 5277 states have (on average 1.2723138146674247) internal successors, (6714), 5461 states have internal predecessors, (6714), 3067 states have call successors, (3067), 681 states have call predecessors, (3067), 670 states have return successors, (3077), 2986 states have call predecessors, (3077), 3063 states have call successors, (3077) [2023-11-23 21:19:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 12858 transitions. [2023-11-23 21:19:25,273 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 12858 transitions. Word has length 171 [2023-11-23 21:19:25,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:25,274 INFO L495 AbstractCegarLoop]: Abstraction has 9017 states and 12858 transitions. [2023-11-23 21:19:25,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 21:19:25,274 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 12858 transitions. [2023-11-23 21:19:25,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-23 21:19:25,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:25,286 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:25,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:19:25,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:19:25,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:25,288 INFO L85 PathProgramCache]: Analyzing trace with hash 88602337, now seen corresponding path program 1 times [2023-11-23 21:19:25,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:25,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296659072] [2023-11-23 21:19:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:25,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-11-23 21:19:26,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:26,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296659072] [2023-11-23 21:19:26,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296659072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:26,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:26,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:19:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411505407] [2023-11-23 21:19:26,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:26,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:19:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:26,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:19:26,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:19:26,059 INFO L87 Difference]: Start difference. First operand 9017 states and 12858 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 21:19:28,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:28,444 INFO L93 Difference]: Finished difference Result 9023 states and 12863 transitions. [2023-11-23 21:19:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:19:28,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 175 [2023-11-23 21:19:28,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted.