./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-wan-farsync.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/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_4ded369e-437f-45b6-b954-2e61db69591d/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/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-wan-farsync.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/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_4ded369e-437f-45b6-b954-2e61db69591d/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 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:12:18,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:12:19,068 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:12:19,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:12:19,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:12:19,100 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:12:19,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:12:19,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:12:19,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:12:19,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:12:19,105 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:12:19,105 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:12:19,106 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:12:19,107 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:12:19,108 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:12:19,109 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:12:19,109 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:12:19,110 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:12:19,111 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:12:19,112 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:12:19,112 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:12:19,113 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:12:19,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:12:19,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:12:19,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:12:19,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:12:19,117 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:12:19,118 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:12:19,118 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:12:19,119 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:12:19,119 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:12:19,120 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:12:19,120 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:12:19,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:12:19,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:19,121 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:12:19,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:12:19,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:12:19,123 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:12:19,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:12:19,123 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:12:19,124 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:12:19,124 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:12:19,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:12:19,125 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_4ded369e-437f-45b6-b954-2e61db69591d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2023-11-23 21:12:19,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:12:19,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:12:19,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:12:19,429 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:12:19,429 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:12:19,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2023-11-23 21:12:22,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:12:23,226 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:12:23,227 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2023-11-23 21:12:23,294 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/bin/utaipan-verify-mE87zJ7Ire/data/f5db914eb/f83a41432ef245b09469be52782b7449/FLAG293439374 [2023-11-23 21:12:23,313 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/bin/utaipan-verify-mE87zJ7Ire/data/f5db914eb/f83a41432ef245b09469be52782b7449 [2023-11-23 21:12:23,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:12:23,321 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:12:23,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:23,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:12:23,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:12:23,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:23" (1/1) ... [2023-11-23 21:12:23,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44c932e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:23, skipping insertion in model container [2023-11-23 21:12:23,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:23" (1/1) ... [2023-11-23 21:12:23,580 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:12:26,520 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_4ded369e-437f-45b6-b954-2e61db69591d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2023-11-23 21:12:26,525 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_4ded369e-437f-45b6-b954-2e61db69591d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2023-11-23 21:12:26,525 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_4ded369e-437f-45b6-b954-2e61db69591d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2023-11-23 21:12:26,526 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_4ded369e-437f-45b6-b954-2e61db69591d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2023-11-23 21:12:26,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:26,617 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:12:26,804 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"); [5287] [2023-11-23 21:12:26,806 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)); [5294] [2023-11-23 21:12:26,806 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5301] [2023-11-23 21:12:26,816 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)); [5339-5340] [2023-11-23 21:12:26,816 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"); [5345-5347] [2023-11-23 21:12:26,823 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %1,%0": "=q" (ret): "m" (*((unsigned char volatile *)addr)): "memory"); [5425] [2023-11-23 21:12:26,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %1,%0": "=r" (ret): "m" (*((unsigned short volatile *)addr)): "memory"); [5433] [2023-11-23 21:12:26,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5441] [2023-11-23 21:12:26,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %0,%1": : "q" (val), "m" (*((unsigned char volatile *)addr)): "memory"); [5448] [2023-11-23 21:12:26,825 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %0,%1": : "r" (val), "m" (*((unsigned short volatile *)addr)): "memory"); [5455] [2023-11-23 21:12:26,825 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [5462] [2023-11-23 21:12:26,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5499] [2023-11-23 21:12:26,827 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5507] [2023-11-23 21:12:26,827 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [5514] [2023-11-23 21:12:26,827 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outl %0, %w1": : "a" (value), "Nd" (port)); [5521] [2023-11-23 21:12:26,828 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inl %w1, %0": "=a" (value): "Nd" (port)); [5529] [2023-11-23 21:12:27,183 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_4ded369e-437f-45b6-b954-2e61db69591d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2023-11-23 21:12:27,184 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_4ded369e-437f-45b6-b954-2e61db69591d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2023-11-23 21:12:27,184 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_4ded369e-437f-45b6-b954-2e61db69591d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2023-11-23 21:12:27,185 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_4ded369e-437f-45b6-b954-2e61db69591d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2023-11-23 21:12:27,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:27,422 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:12:27,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27 WrapperNode [2023-11-23 21:12:27,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:27,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:27,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:12:27,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:12:27,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27" (1/1) ... [2023-11-23 21:12:27,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27" (1/1) ... [2023-11-23 21:12:27,788 INFO L138 Inliner]: procedures = 418, calls = 2017, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 5463 [2023-11-23 21:12:27,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:27,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:12:27,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:12:27,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:12:27,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27" (1/1) ... [2023-11-23 21:12:27,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27" (1/1) ... [2023-11-23 21:12:27,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27" (1/1) ... [2023-11-23 21:12:27,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27" (1/1) ... [2023-11-23 21:12:28,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27" (1/1) ... [2023-11-23 21:12:28,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27" (1/1) ... [2023-11-23 21:12:28,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27" (1/1) ... [2023-11-23 21:12:28,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27" (1/1) ... [2023-11-23 21:12:28,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:12:28,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:12:28,224 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:12:28,224 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:12:28,225 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27" (1/1) ... [2023-11-23 21:12:28,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:28,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:12:28,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:12:28,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ded369e-437f-45b6-b954-2e61db69591d/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:12:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2023-11-23 21:12:28,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2023-11-23 21:12:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-23 21:12:28,310 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-23 21:12:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:12:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:12:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-23 21:12:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-23 21:12:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:12:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:12:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure fst_remove_one [2023-11-23 21:12:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_remove_one [2023-11-23 21:12:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 21:12:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 21:12:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:12:28,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 21:12:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-23 21:12:28,316 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-23 21:12:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2023-11-23 21:12:28,316 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2023-11-23 21:12:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2023-11-23 21:12:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2023-11-23 21:12:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2023-11-23 21:12:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2023-11-23 21:12:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2023-11-23 21:12:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2023-11-23 21:12:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:12:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:12:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure fst_close [2023-11-23 21:12:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_close [2023-11-23 21:12:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:12:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:12:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-11-23 21:12:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-11-23 21:12:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:12:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:12:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure fst_tx_timeout [2023-11-23 21:12:28,319 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_tx_timeout [2023-11-23 21:12:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 21:12:28,320 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 21:12:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:12:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-23 21:12:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-23 21:12:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure fst_open [2023-11-23 21:12:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_open [2023-11-23 21:12:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2023-11-23 21:12:28,322 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2023-11-23 21:12:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:12:28,322 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:12:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:12:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-23 21:12:28,323 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-23 21:12:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-23 21:12:28,323 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-23 21:12:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:12:28,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:12:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:12:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:12:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:12:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:12:28,325 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2023-11-23 21:12:28,325 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2023-11-23 21:12:28,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:12:28,325 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:12:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2023-11-23 21:12:28,326 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2023-11-23 21:12:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:12:28,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:12:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-23 21:12:28,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-23 21:12:28,327 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-23 21:12:28,327 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-23 21:12:28,327 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-23 21:12:28,327 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-23 21:12:28,327 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-23 21:12:28,327 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-23 21:12:28,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:12:28,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 21:12:28,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:12:28,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-23 21:12:28,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-23 21:12:28,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-11-23 21:12:28,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-11-23 21:12:28,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_card_lock_of_fst_card_info [2023-11-23 21:12:28,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_card_lock_of_fst_card_info [2023-11-23 21:12:28,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:12:28,329 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2023-11-23 21:12:28,330 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2023-11-23 21:12:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:12:28,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:12:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:12:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:12:28,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:12:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-11-23 21:12:28,331 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-11-23 21:12:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:12:28,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:12:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-11-23 21:12:28,332 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-11-23 21:12:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2023-11-23 21:12:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2023-11-23 21:12:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-23 21:12:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-23 21:12:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:12:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:12:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-23 21:12:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-23 21:12:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-23 21:12:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-23 21:12:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-23 21:12:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-23 21:12:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2023-11-23 21:12:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2023-11-23 21:12:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2023-11-23 21:12:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2023-11-23 21:12:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:12:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:12:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:12:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:12:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:12:28,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:12:28,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:12:28,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 21:12:28,338 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-23 21:12:28,338 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-23 21:12:28,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:12:28,341 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:12:28,342 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:12:28,342 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:12:28,342 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-23 21:12:28,343 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-23 21:12:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-23 21:12:28,345 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-23 21:12:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:12:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-23 21:12:28,351 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-23 21:12:28,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:12:28,352 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2023-11-23 21:12:28,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2023-11-23 21:12:28,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:12:28,352 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-23 21:12:28,352 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-23 21:12:28,352 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 21:12:28,353 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 21:12:28,353 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-23 21:12:28,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-23 21:12:28,354 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-23 21:12:28,354 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-23 21:12:28,354 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-23 21:12:28,354 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-23 21:12:28,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:12:28,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:12:28,355 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2023-11-23 21:12:28,355 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2023-11-23 21:12:28,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-23 21:12:28,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-23 21:12:28,355 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2023-11-23 21:12:28,356 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2023-11-23 21:12:28,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 21:12:28,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 21:12:28,356 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:12:28,356 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:12:28,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_fst_work_q_lock [2023-11-23 21:12:28,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_fst_work_q_lock [2023-11-23 21:12:28,357 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 21:12:28,357 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 21:12:28,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:12:28,357 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2023-11-23 21:12:28,357 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2023-11-23 21:12:28,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:12:28,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:12:28,357 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-23 21:12:28,358 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-23 21:12:28,358 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-23 21:12:28,358 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-23 21:12:28,358 INFO L130 BoogieDeclarations]: Found specification of procedure do_bottom_half_tx [2023-11-23 21:12:28,358 INFO L138 BoogieDeclarations]: Found implementation of procedure do_bottom_half_tx [2023-11-23 21:12:28,358 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2023-11-23 21:12:28,358 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2023-11-23 21:12:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:12:28,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:12:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2023-11-23 21:12:28,359 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2023-11-23 21:12:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2023-11-23 21:12:28,359 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2023-11-23 21:12:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-23 21:12:28,360 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-23 21:12:28,360 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-23 21:12:28,360 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-23 21:12:28,360 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2023-11-23 21:12:28,360 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2023-11-23 21:12:28,360 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2023-11-23 21:12:28,360 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2023-11-23 21:12:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:12:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2023-11-23 21:12:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2023-11-23 21:12:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:12:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:12:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2023-11-23 21:12:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2023-11-23 21:12:29,120 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:12:29,128 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:12:29,239 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:12:33,632 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 21:12:33,854 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:12:35,546 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:12:35,546 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:12:35,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:35 BoogieIcfgContainer [2023-11-23 21:12:35,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:12:35,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:12:35,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:12:35,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:12:35,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:12:23" (1/3) ... [2023-11-23 21:12:35,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4a50b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:35, skipping insertion in model container [2023-11-23 21:12:35,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:27" (2/3) ... [2023-11-23 21:12:35,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4a50b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:35, skipping insertion in model container [2023-11-23 21:12:35,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:35" (3/3) ... [2023-11-23 21:12:35,561 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2023-11-23 21:12:35,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:12:35,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-23 21:12:35,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:12:35,698 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;@4bb28389, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:12:35,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 21:12:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 1486 states, 880 states have (on average 1.3045454545454545) internal successors, (1148), 894 states have internal predecessors, (1148), 512 states have call successors, (512), 92 states have call predecessors, (512), 91 states have return successors, (505), 503 states have call predecessors, (505), 505 states have call successors, (505) [2023-11-23 21:12:35,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-23 21:12:35,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:35,749 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:35,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:12:35,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:35,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1928414803, now seen corresponding path program 1 times [2023-11-23 21:12:35,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:35,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413854656] [2023-11-23 21:12:35,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:35,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 21:12:36,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:36,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413854656] [2023-11-23 21:12:36,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413854656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:36,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:36,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:36,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205902915] [2023-11-23 21:12:36,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:36,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:36,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:36,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:36,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:36,715 INFO L87 Difference]: Start difference. First operand has 1486 states, 880 states have (on average 1.3045454545454545) internal successors, (1148), 894 states have internal predecessors, (1148), 512 states have call successors, (512), 92 states have call predecessors, (512), 91 states have return successors, (505), 503 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 21:12:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:38,669 INFO L93 Difference]: Finished difference Result 4351 states and 6444 transitions. [2023-11-23 21:12:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:38,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2023-11-23 21:12:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:38,711 INFO L225 Difference]: With dead ends: 4351 [2023-11-23 21:12:38,711 INFO L226 Difference]: Without dead ends: 2865 [2023-11-23 21:12:38,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:38,729 INFO L413 NwaCegarLoop]: 1902 mSDtfsCounter, 2054 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2054 SdHoareTripleChecker+Valid, 3753 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:38,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2054 Valid, 3753 Invalid, 554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 21:12:38,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2023-11-23 21:12:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2861. [2023-11-23 21:12:39,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 1711 states have (on average 1.298071303331385) internal successors, (2221), 1738 states have internal predecessors, (2221), 969 states have call successors, (969), 179 states have call predecessors, (969), 178 states have return successors, (965), 961 states have call predecessors, (965), 965 states have call successors, (965) [2023-11-23 21:12:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4155 transitions. [2023-11-23 21:12:39,079 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4155 transitions. Word has length 71 [2023-11-23 21:12:39,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:39,081 INFO L495 AbstractCegarLoop]: Abstraction has 2861 states and 4155 transitions. [2023-11-23 21:12:39,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 21:12:39,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4155 transitions. [2023-11-23 21:12:39,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 21:12:39,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:39,091 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:39,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:12:39,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:12:39,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:39,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2145624772, now seen corresponding path program 1 times [2023-11-23 21:12:39,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:39,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478260513] [2023-11-23 21:12:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:39,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 21:12:39,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:39,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478260513] [2023-11-23 21:12:39,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478260513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:39,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:39,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:12:39,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529294737] [2023-11-23 21:12:39,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:39,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:12:39,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:39,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:12:39,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:12:39,710 INFO L87 Difference]: Start difference. First operand 2861 states and 4155 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 21:12:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:48,857 INFO L93 Difference]: Finished difference Result 7409 states and 10758 transitions. [2023-11-23 21:12:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:12:48,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2023-11-23 21:12:48,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:48,904 INFO L225 Difference]: With dead ends: 7409 [2023-11-23 21:12:48,904 INFO L226 Difference]: Without dead ends: 4559 [2023-11-23 21:12:48,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:12:48,919 INFO L413 NwaCegarLoop]: 1928 mSDtfsCounter, 8639 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 3962 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8863 SdHoareTripleChecker+Valid, 4087 SdHoareTripleChecker+Invalid, 6559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3962 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:48,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8863 Valid, 4087 Invalid, 6559 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3962 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-11-23 21:12:48,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2023-11-23 21:12:49,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 4505. [2023-11-23 21:12:49,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4505 states, 2748 states have (on average 1.309679767103348) internal successors, (3599), 2791 states have internal predecessors, (3599), 1460 states have call successors, (1460), 297 states have call predecessors, (1460), 294 states have return successors, (1456), 1444 states have call predecessors, (1456), 1456 states have call successors, (1456) [2023-11-23 21:12:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4505 states to 4505 states and 6515 transitions. [2023-11-23 21:12:49,252 INFO L78 Accepts]: Start accepts. Automaton has 4505 states and 6515 transitions. Word has length 79 [2023-11-23 21:12:49,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:49,255 INFO L495 AbstractCegarLoop]: Abstraction has 4505 states and 6515 transitions. [2023-11-23 21:12:49,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 21:12:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4505 states and 6515 transitions. [2023-11-23 21:12:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 21:12:49,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:49,258 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:49,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:12:49,259 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:12:49,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1879238528, now seen corresponding path program 1 times [2023-11-23 21:12:49,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:49,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133371261] [2023-11-23 21:12:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:49,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 21:12:49,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:49,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133371261] [2023-11-23 21:12:49,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133371261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:49,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:49,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:49,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915724980] [2023-11-23 21:12:49,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:49,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:49,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:49,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:49,501 INFO L87 Difference]: Start difference. First operand 4505 states and 6515 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 21:12:51,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:51,169 INFO L93 Difference]: Finished difference Result 10923 states and 15702 transitions. [2023-11-23 21:12:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:51,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2023-11-23 21:12:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:51,224 INFO L225 Difference]: With dead ends: 10923 [2023-11-23 21:12:51,224 INFO L226 Difference]: Without dead ends: 6429 [2023-11-23 21:12:51,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:51,246 INFO L413 NwaCegarLoop]: 1879 mSDtfsCounter, 1592 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 3731 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:51,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 3731 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:12:51,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6429 states. [2023-11-23 21:12:51,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6429 to 6400. [2023-11-23 21:12:51,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6400 states, 3890 states have (on average 1.3053984575835476) internal successors, (5078), 3957 states have internal predecessors, (5078), 2034 states have call successors, (2034), 478 states have call predecessors, (2034), 473 states have return successors, (2033), 2000 states have call predecessors, (2033), 2030 states have call successors, (2033) [2023-11-23 21:12:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6400 states to 6400 states and 9145 transitions. [2023-11-23 21:12:51,754 INFO L78 Accepts]: Start accepts. Automaton has 6400 states and 9145 transitions. Word has length 81 [2023-11-23 21:12:51,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:51,756 INFO L495 AbstractCegarLoop]: Abstraction has 6400 states and 9145 transitions. [2023-11-23 21:12:51,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 21:12:51,756 INFO L276 IsEmpty]: Start isEmpty. Operand 6400 states and 9145 transitions. [2023-11-23 21:12:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 21:12:51,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:51,761 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:51,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:12:51,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:12:51,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:51,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1447153237, now seen corresponding path program 1 times [2023-11-23 21:12:51,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:51,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814411413] [2023-11-23 21:12:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:51,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 21:12:51,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:51,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814411413] [2023-11-23 21:12:51,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814411413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:51,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:51,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:51,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28724166] [2023-11-23 21:12:51,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:51,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:51,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:51,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:51,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:51,939 INFO L87 Difference]: Start difference. First operand 6400 states and 9145 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:12:53,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:53,897 INFO L93 Difference]: Finished difference Result 17865 states and 25448 transitions. [2023-11-23 21:12:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:53,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 79 [2023-11-23 21:12:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:54,000 INFO L225 Difference]: With dead ends: 17865 [2023-11-23 21:12:54,000 INFO L226 Difference]: Without dead ends: 11476 [2023-11-23 21:12:54,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:54,030 INFO L413 NwaCegarLoop]: 1905 mSDtfsCounter, 1919 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 3745 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:54,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 3745 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:12:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11476 states. [2023-11-23 21:12:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11476 to 11438. [2023-11-23 21:12:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11438 states, 6944 states have (on average 1.2942108294930876) internal successors, (8987), 7079 states have internal predecessors, (8987), 3596 states have call successors, (3596), 904 states have call predecessors, (3596), 895 states have return successors, (3598), 3517 states have call predecessors, (3598), 3592 states have call successors, (3598) [2023-11-23 21:12:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11438 states to 11438 states and 16181 transitions. [2023-11-23 21:12:55,004 INFO L78 Accepts]: Start accepts. Automaton has 11438 states and 16181 transitions. Word has length 79 [2023-11-23 21:12:55,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:55,005 INFO L495 AbstractCegarLoop]: Abstraction has 11438 states and 16181 transitions. [2023-11-23 21:12:55,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:12:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 11438 states and 16181 transitions. [2023-11-23 21:12:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 21:12:55,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:55,009 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:55,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:12:55,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:12:55,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2004847418, now seen corresponding path program 1 times [2023-11-23 21:12:55,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:55,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033221798] [2023-11-23 21:12:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 21:12:55,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:55,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033221798] [2023-11-23 21:12:55,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033221798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:55,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:55,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:55,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203838361] [2023-11-23 21:12:55,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:55,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:55,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:55,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:55,256 INFO L87 Difference]: Start difference. First operand 11438 states and 16181 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:12:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:57,824 INFO L93 Difference]: Finished difference Result 32987 states and 46622 transitions. [2023-11-23 21:12:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:57,825 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2023-11-23 21:12:57,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:57,941 INFO L225 Difference]: With dead ends: 32987 [2023-11-23 21:12:57,941 INFO L226 Difference]: Without dead ends: 21560 [2023-11-23 21:12:57,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:57,992 INFO L413 NwaCegarLoop]: 2133 mSDtfsCounter, 2030 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 3973 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:57,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 3973 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:12:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21560 states. [2023-11-23 21:12:59,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21560 to 21522. [2023-11-23 21:12:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21522 states, 13106 states have (on average 1.2843735693575462) internal successors, (16833), 13378 states have internal predecessors, (16833), 6700 states have call successors, (6700), 1730 states have call predecessors, (6700), 1713 states have return successors, (6708), 6531 states have call predecessors, (6708), 6696 states have call successors, (6708) [2023-11-23 21:12:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21522 states to 21522 states and 30241 transitions. [2023-11-23 21:12:59,538 INFO L78 Accepts]: Start accepts. Automaton has 21522 states and 30241 transitions. Word has length 80 [2023-11-23 21:12:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:59,538 INFO L495 AbstractCegarLoop]: Abstraction has 21522 states and 30241 transitions. [2023-11-23 21:12:59,539 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:12:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 21522 states and 30241 transitions. [2023-11-23 21:12:59,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 21:12:59,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:59,545 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 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] [2023-11-23 21:12:59,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:12:59,546 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:12:59,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:59,547 INFO L85 PathProgramCache]: Analyzing trace with hash -430711925, now seen corresponding path program 1 times [2023-11-23 21:12:59,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:59,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465333825] [2023-11-23 21:12:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:59,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-23 21:12:59,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:12:59,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465333825] [2023-11-23 21:12:59,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465333825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:59,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:59,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:12:59,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255537304] [2023-11-23 21:12:59,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:59,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:59,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:12:59,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:59,750 INFO L87 Difference]: Start difference. First operand 21522 states and 30241 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 21:13:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:02,905 INFO L93 Difference]: Finished difference Result 59723 states and 83900 transitions. [2023-11-23 21:13:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:13:02,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2023-11-23 21:13:02,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:03,138 INFO L225 Difference]: With dead ends: 59723 [2023-11-23 21:13:03,138 INFO L226 Difference]: Without dead ends: 38212 [2023-11-23 21:13:03,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:13:03,217 INFO L413 NwaCegarLoop]: 2487 mSDtfsCounter, 1910 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 4297 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:03,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1910 Valid, 4297 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:13:03,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38212 states.