./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 cf1a7837 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_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/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_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX --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-cf1a783 [2023-11-12 00:58:38,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:58:38,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:58:38,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:58:38,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:58:38,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:58:38,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:58:38,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:58:38,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:58:38,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:58:38,174 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:58:38,174 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:58:38,175 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:58:38,175 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:58:38,176 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:58:38,177 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:58:38,177 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:58:38,178 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:58:38,178 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:58:38,179 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:58:38,179 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:58:38,180 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:58:38,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:58:38,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:58:38,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:58:38,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:58:38,183 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:58:38,183 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:58:38,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:58:38,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:58:38,184 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:58:38,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:58:38,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:58:38,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:38,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:58:38,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:58:38,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:58:38,204 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:58:38,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:58:38,204 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:58:38,204 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:58:38,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:58:38,205 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_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2023-11-12 00:58:38,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:58:38,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:58:38,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:58:38,518 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:58:38,519 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:58:38,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2023-11-12 00:58:41,754 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:58:42,536 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:58:42,537 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2023-11-12 00:58:42,590 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/data/68f1da065/0b5702524b5d4be88d8c716ab8b55174/FLAGd80c82acd [2023-11-12 00:58:42,609 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/data/68f1da065/0b5702524b5d4be88d8c716ab8b55174 [2023-11-12 00:58:42,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:58:42,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:58:42,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:42,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:58:42,625 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:58:42,626 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:42" (1/1) ... [2023-11-12 00:58:42,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24341bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:42, skipping insertion in model container [2023-11-12 00:58:42,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:58:42" (1/1) ... [2023-11-12 00:58:42,788 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:58:45,715 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_56b91337-84a0-406a-95fb-0f1f780cb285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2023-11-12 00:58:45,721 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_56b91337-84a0-406a-95fb-0f1f780cb285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2023-11-12 00:58:45,722 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_56b91337-84a0-406a-95fb-0f1f780cb285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2023-11-12 00:58:45,722 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_56b91337-84a0-406a-95fb-0f1f780cb285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2023-11-12 00:58:45,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:45,798 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:58:45,934 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] [2023-11-12 00:58:45,936 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] [2023-11-12 00:58:45,936 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5301] [2023-11-12 00:58:45,946 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] [2023-11-12 00:58:45,947 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] [2023-11-12 00:58:45,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %1,%0": "=q" (ret): "m" (*((unsigned char volatile *)addr)): "memory"); [5425] [2023-11-12 00:58:45,953 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %1,%0": "=r" (ret): "m" (*((unsigned short volatile *)addr)): "memory"); [5433] [2023-11-12 00:58:45,953 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5441] [2023-11-12 00:58:45,954 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %0,%1": : "q" (val), "m" (*((unsigned char volatile *)addr)): "memory"); [5448] [2023-11-12 00:58:45,954 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %0,%1": : "r" (val), "m" (*((unsigned short volatile *)addr)): "memory"); [5455] [2023-11-12 00:58:45,954 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [5462] [2023-11-12 00:58:45,955 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5499] [2023-11-12 00:58:45,955 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5507] [2023-11-12 00:58:45,956 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [5514] [2023-11-12 00:58:45,956 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outl %0, %w1": : "a" (value), "Nd" (port)); [5521] [2023-11-12 00:58:45,957 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inl %w1, %0": "=a" (value): "Nd" (port)); [5529] [2023-11-12 00:58:46,287 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_56b91337-84a0-406a-95fb-0f1f780cb285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2023-11-12 00:58:46,288 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_56b91337-84a0-406a-95fb-0f1f780cb285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2023-11-12 00:58:46,289 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_56b91337-84a0-406a-95fb-0f1f780cb285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2023-11-12 00:58:46,290 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_56b91337-84a0-406a-95fb-0f1f780cb285/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2023-11-12 00:58:46,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:58:46,508 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:58:46,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46 WrapperNode [2023-11-12 00:58:46,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:58:46,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:46,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:58:46,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:58:46,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46" (1/1) ... [2023-11-12 00:58:46,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46" (1/1) ... [2023-11-12 00:58:46,943 INFO L138 Inliner]: procedures = 418, calls = 2017, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 5463 [2023-11-12 00:58:46,944 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:58:46,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:58:46,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:58:46,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:58:46,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46" (1/1) ... [2023-11-12 00:58:46,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46" (1/1) ... [2023-11-12 00:58:46,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46" (1/1) ... [2023-11-12 00:58:46,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46" (1/1) ... [2023-11-12 00:58:47,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46" (1/1) ... [2023-11-12 00:58:47,136 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46" (1/1) ... [2023-11-12 00:58:47,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46" (1/1) ... [2023-11-12 00:58:47,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46" (1/1) ... [2023-11-12 00:58:47,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:58:47,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:58:47,266 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:58:47,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:58:47,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46" (1/1) ... [2023-11-12 00:58:47,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:58:47,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:58:47,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:58:47,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:58:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2023-11-12 00:58:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2023-11-12 00:58:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-12 00:58:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-12 00:58:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-12 00:58:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-12 00:58:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-12 00:58:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-12 00:58:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:58:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:58:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure fst_remove_one [2023-11-12 00:58:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_remove_one [2023-11-12 00:58:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-12 00:58:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-12 00:58:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-12 00:58:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-12 00:58:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-12 00:58:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-12 00:58:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2023-11-12 00:58:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2023-11-12 00:58:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2023-11-12 00:58:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2023-11-12 00:58:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2023-11-12 00:58:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2023-11-12 00:58:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2023-11-12 00:58:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2023-11-12 00:58:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 00:58:47,370 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 00:58:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure fst_close [2023-11-12 00:58:47,370 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_close [2023-11-12 00:58:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-12 00:58:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-12 00:58:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-11-12 00:58:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-11-12 00:58:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-12 00:58:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-12 00:58:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure fst_tx_timeout [2023-11-12 00:58:47,372 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_tx_timeout [2023-11-12 00:58:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-12 00:58:47,372 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-12 00:58:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:58:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-12 00:58:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-12 00:58:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure fst_open [2023-11-12 00:58:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_open [2023-11-12 00:58:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2023-11-12 00:58:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2023-11-12 00:58:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-12 00:58:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-12 00:58:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:58:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-12 00:58:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-12 00:58:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-12 00:58:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-12 00:58:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-12 00:58:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-12 00:58:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:58:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-12 00:58:47,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-12 00:58:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:58:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2023-11-12 00:58:47,376 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2023-11-12 00:58:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 00:58:47,377 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 00:58:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2023-11-12 00:58:47,377 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2023-11-12 00:58:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-12 00:58:47,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-12 00:58:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-12 00:58:47,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-12 00:58:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-12 00:58:47,378 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-12 00:58:47,378 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-12 00:58:47,378 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-12 00:58:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-12 00:58:47,379 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-12 00:58:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-12 00:58:47,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-12 00:58:47,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:58:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-12 00:58:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-12 00:58:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-11-12 00:58:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-11-12 00:58:47,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_card_lock_of_fst_card_info [2023-11-12 00:58:47,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_card_lock_of_fst_card_info [2023-11-12 00:58:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:58:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2023-11-12 00:58:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2023-11-12 00:58:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-12 00:58:47,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-12 00:58:47,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:58:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:58:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:58:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-11-12 00:58:47,382 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-11-12 00:58:47,382 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-12 00:58:47,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-12 00:58:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-11-12 00:58:47,383 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-11-12 00:58:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2023-11-12 00:58:47,383 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2023-11-12 00:58:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-12 00:58:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-12 00:58:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-12 00:58:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-12 00:58:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-12 00:58:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-12 00:58:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-12 00:58:47,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-12 00:58:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-12 00:58:47,385 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-12 00:58:47,385 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2023-11-12 00:58:47,385 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2023-11-12 00:58:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2023-11-12 00:58:47,386 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2023-11-12 00:58:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:58:47,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:58:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:58:47,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:58:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 00:58:47,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 00:58:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-12 00:58:47,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-12 00:58:47,387 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-12 00:58:47,387 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-12 00:58:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:58:47,388 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:58:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-12 00:58:47,388 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-12 00:58:47,388 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-12 00:58:47,389 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-12 00:58:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-12 00:58:47,389 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-12 00:58:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:58:47,389 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-12 00:58:47,389 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-12 00:58:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:58:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2023-11-12 00:58:47,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2023-11-12 00:58:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:58:47,390 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-12 00:58:47,391 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-12 00:58:47,391 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:58:47,391 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:58:47,391 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-12 00:58:47,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-12 00:58:47,391 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-12 00:58:47,392 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-12 00:58:47,392 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-12 00:58:47,392 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-12 00:58:47,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-12 00:58:47,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-12 00:58:47,392 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2023-11-12 00:58:47,392 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2023-11-12 00:58:47,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-12 00:58:47,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-12 00:58:47,393 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2023-11-12 00:58:47,393 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2023-11-12 00:58:47,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-12 00:58:47,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-12 00:58:47,394 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-12 00:58:47,394 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-12 00:58:47,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_fst_work_q_lock [2023-11-12 00:58:47,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_fst_work_q_lock [2023-11-12 00:58:47,394 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:58:47,394 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:58:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:58:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2023-11-12 00:58:47,395 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2023-11-12 00:58:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:58:47,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:58:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-12 00:58:47,396 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-12 00:58:47,396 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-12 00:58:47,396 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-12 00:58:47,396 INFO L130 BoogieDeclarations]: Found specification of procedure do_bottom_half_tx [2023-11-12 00:58:47,397 INFO L138 BoogieDeclarations]: Found implementation of procedure do_bottom_half_tx [2023-11-12 00:58:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2023-11-12 00:58:47,397 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2023-11-12 00:58:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-12 00:58:47,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-12 00:58:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2023-11-12 00:58:47,398 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2023-11-12 00:58:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2023-11-12 00:58:47,398 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2023-11-12 00:58:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-12 00:58:47,398 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-12 00:58:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-12 00:58:47,399 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-12 00:58:47,399 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2023-11-12 00:58:47,399 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2023-11-12 00:58:47,399 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2023-11-12 00:58:47,399 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2023-11-12 00:58:47,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:58:47,399 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2023-11-12 00:58:47,400 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2023-11-12 00:58:47,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-12 00:58:47,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-12 00:58:47,400 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2023-11-12 00:58:47,400 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2023-11-12 00:58:48,259 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:58:48,269 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:58:48,416 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 00:58:53,668 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-12 00:58:53,898 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:58:55,972 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:58:55,972 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:58:55,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:55 BoogieIcfgContainer [2023-11-12 00:58:55,980 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:58:55,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:58:55,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:58:55,988 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:58:55,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:58:42" (1/3) ... [2023-11-12 00:58:55,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666fb9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:55, skipping insertion in model container [2023-11-12 00:58:55,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:58:46" (2/3) ... [2023-11-12 00:58:55,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666fb9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:58:55, skipping insertion in model container [2023-11-12 00:58:55,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:58:55" (3/3) ... [2023-11-12 00:58:55,992 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2023-11-12 00:58:56,015 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:58:56,015 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-12 00:58:56,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:58:56,142 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;@47a7552b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:58:56,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-12 00:58:56,154 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) [2023-11-12 00:58:56,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 00:58:56,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:56,185 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] [2023-11-12 00:58:56,186 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)] === [2023-11-12 00:58:56,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:56,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1238257012, now seen corresponding path program 1 times [2023-11-12 00:58:56,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:56,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437683020] [2023-11-12 00:58:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:56,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-12 00:58:57,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:58:57,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437683020] [2023-11-12 00:58:57,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437683020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:57,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:57,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:58:57,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106059794] [2023-11-12 00:58:57,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:57,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:58:57,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:58:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:58:57,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:58:57,165 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) [2023-11-12 00:58:59,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:59,222 INFO L93 Difference]: Finished difference Result 4351 states and 6444 transitions. [2023-11-12 00:58:59,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:58:59,224 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 [2023-11-12 00:58:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:59,269 INFO L225 Difference]: With dead ends: 4351 [2023-11-12 00:58:59,269 INFO L226 Difference]: Without dead ends: 2865 [2023-11-12 00:58:59,286 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 [2023-11-12 00:58:59,294 INFO L413 NwaCegarLoop]: 1902 mSDtfsCounter, 2054 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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 [2023-11-12 00:58:59,295 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] [2023-11-12 00:58:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2023-11-12 00:58:59,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2861. [2023-11-12 00:58:59,641 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) [2023-11-12 00:58:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4155 transitions. [2023-11-12 00:58:59,674 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4155 transitions. Word has length 71 [2023-11-12 00:58:59,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:59,675 INFO L495 AbstractCegarLoop]: Abstraction has 2861 states and 4155 transitions. [2023-11-12 00:58:59,681 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) [2023-11-12 00:58:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4155 transitions. [2023-11-12 00:58:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 00:58:59,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:59,693 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] [2023-11-12 00:58:59,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:58:59,694 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)] === [2023-11-12 00:58:59,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash 790202311, now seen corresponding path program 1 times [2023-11-12 00:58:59,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:58:59,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55710607] [2023-11-12 00:58:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:59,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:58:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-12 00:59:00,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55710607] [2023-11-12 00:59:00,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55710607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:00,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:00,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:59:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767041402] [2023-11-12 00:59:00,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:00,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:00,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:00,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:00,184 INFO L87 Difference]: Start difference. First operand 2861 states and 4155 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 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) [2023-11-12 00:59:02,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:02,062 INFO L93 Difference]: Finished difference Result 6325 states and 9196 transitions. [2023-11-12 00:59:02,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:02,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 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 [2023-11-12 00:59:02,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:02,097 INFO L225 Difference]: With dead ends: 6325 [2023-11-12 00:59:02,097 INFO L226 Difference]: Without dead ends: 3475 [2023-11-12 00:59:02,112 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 [2023-11-12 00:59:02,113 INFO L413 NwaCegarLoop]: 1877 mSDtfsCounter, 1488 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 3707 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:02,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 3707 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-12 00:59:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2023-11-12 00:59:02,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3449. [2023-11-12 00:59:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 2103 states have (on average 1.307655729909653) internal successors, (2750), 2135 states have internal predecessors, (2750), 1123 states have call successors, (1123), 222 states have call predecessors, (1123), 220 states have return successors, (1119), 1112 states have call predecessors, (1119), 1119 states have call successors, (1119) [2023-11-12 00:59:02,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4992 transitions. [2023-11-12 00:59:02,370 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4992 transitions. Word has length 79 [2023-11-12 00:59:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:02,372 INFO L495 AbstractCegarLoop]: Abstraction has 3449 states and 4992 transitions. [2023-11-12 00:59:02,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 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) [2023-11-12 00:59:02,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4992 transitions. [2023-11-12 00:59:02,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-12 00:59:02,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:02,375 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] [2023-11-12 00:59:02,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:59:02,376 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)] === [2023-11-12 00:59:02,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:02,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1800172395, now seen corresponding path program 1 times [2023-11-12 00:59:02,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:02,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396179384] [2023-11-12 00:59:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:02,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-12 00:59:02,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:02,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396179384] [2023-11-12 00:59:02,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396179384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:02,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:02,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:59:02,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150154988] [2023-11-12 00:59:02,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:02,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:02,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:02,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:02,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:02,643 INFO L87 Difference]: Start difference. First operand 3449 states and 4992 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) [2023-11-12 00:59:04,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:04,334 INFO L93 Difference]: Finished difference Result 8163 states and 11747 transitions. [2023-11-12 00:59:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:04,334 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 [2023-11-12 00:59:04,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:04,376 INFO L225 Difference]: With dead ends: 8163 [2023-11-12 00:59:04,376 INFO L226 Difference]: Without dead ends: 4725 [2023-11-12 00:59:04,390 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 [2023-11-12 00:59:04,395 INFO L413 NwaCegarLoop]: 1879 mSDtfsCounter, 1592 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:04,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 3731 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 00:59:04,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4725 states. [2023-11-12 00:59:04,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4725 to 4697. [2023-11-12 00:59:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4697 states, 2852 states have (on average 1.3022440392706873) internal successors, (3714), 2900 states have internal predecessors, (3714), 1503 states have call successors, (1503), 342 states have call predecessors, (1503), 339 states have return successors, (1502), 1480 states have call predecessors, (1502), 1499 states have call successors, (1502) [2023-11-12 00:59:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4697 states to 4697 states and 6719 transitions. [2023-11-12 00:59:04,818 INFO L78 Accepts]: Start accepts. Automaton has 4697 states and 6719 transitions. Word has length 81 [2023-11-12 00:59:04,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:04,819 INFO L495 AbstractCegarLoop]: Abstraction has 4697 states and 6719 transitions. [2023-11-12 00:59:04,819 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) [2023-11-12 00:59:04,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4697 states and 6719 transitions. [2023-11-12 00:59:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 00:59:04,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:04,826 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] [2023-11-12 00:59:04,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:59:04,827 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)] === [2023-11-12 00:59:04,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:04,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1040478339, now seen corresponding path program 1 times [2023-11-12 00:59:04,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:04,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898541131] [2023-11-12 00:59:04,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:04,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-12 00:59:05,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:05,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898541131] [2023-11-12 00:59:05,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898541131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:05,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:05,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:59:05,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519018325] [2023-11-12 00:59:05,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:05,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:05,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:05,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:05,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:05,088 INFO L87 Difference]: Start difference. First operand 4697 states and 6719 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) [2023-11-12 00:59:07,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:07,074 INFO L93 Difference]: Finished difference Result 12983 states and 18522 transitions. [2023-11-12 00:59:07,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:07,075 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 [2023-11-12 00:59:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:07,149 INFO L225 Difference]: With dead ends: 12983 [2023-11-12 00:59:07,149 INFO L226 Difference]: Without dead ends: 8297 [2023-11-12 00:59:07,173 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 [2023-11-12 00:59:07,174 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1919 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 3736 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:07,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 3736 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 00:59:07,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2023-11-12 00:59:07,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 8263. [2023-11-12 00:59:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8263 states, 5009 states have (on average 1.290676781792773) internal successors, (6465), 5104 states have internal predecessors, (6465), 2622 states have call successors, (2622), 634 states have call predecessors, (2622), 629 states have return successors, (2624), 2569 states have call predecessors, (2624), 2618 states have call successors, (2624) [2023-11-12 00:59:07,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8263 states to 8263 states and 11711 transitions. [2023-11-12 00:59:07,823 INFO L78 Accepts]: Start accepts. Automaton has 8263 states and 11711 transitions. Word has length 79 [2023-11-12 00:59:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:07,824 INFO L495 AbstractCegarLoop]: Abstraction has 8263 states and 11711 transitions. [2023-11-12 00:59:07,825 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) [2023-11-12 00:59:07,825 INFO L276 IsEmpty]: Start isEmpty. Operand 8263 states and 11711 transitions. [2023-11-12 00:59:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 00:59:07,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:07,826 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] [2023-11-12 00:59:07,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:59:07,827 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)] === [2023-11-12 00:59:07,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:07,828 INFO L85 PathProgramCache]: Analyzing trace with hash -241256624, now seen corresponding path program 1 times [2023-11-12 00:59:07,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:07,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518973639] [2023-11-12 00:59:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:07,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-12 00:59:08,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:08,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518973639] [2023-11-12 00:59:08,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518973639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:08,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:08,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:59:08,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067470045] [2023-11-12 00:59:08,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:08,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:08,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:08,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:08,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:08,012 INFO L87 Difference]: Start difference. First operand 8263 states and 11711 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) [2023-11-12 00:59:10,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:10,459 INFO L93 Difference]: Finished difference Result 23716 states and 33600 transitions. [2023-11-12 00:59:10,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:10,460 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 [2023-11-12 00:59:10,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:10,573 INFO L225 Difference]: With dead ends: 23716 [2023-11-12 00:59:10,573 INFO L226 Difference]: Without dead ends: 15464 [2023-11-12 00:59:10,610 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 [2023-11-12 00:59:10,611 INFO L413 NwaCegarLoop]: 2127 mSDtfsCounter, 2030 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 3967 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:10,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 3967 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-12 00:59:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15464 states. [2023-11-12 00:59:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15464 to 15430. [2023-11-12 00:59:11,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15430 states, 9380 states have (on average 1.2813432835820895) internal successors, (12019), 9570 states have internal predecessors, (12019), 4859 states have call successors, (4859), 1197 states have call predecessors, (4859), 1188 states have return successors, (4867), 4746 states have call predecessors, (4867), 4855 states have call successors, (4867) [2023-11-12 00:59:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15430 states to 15430 states and 21745 transitions. [2023-11-12 00:59:11,787 INFO L78 Accepts]: Start accepts. Automaton has 15430 states and 21745 transitions. Word has length 80 [2023-11-12 00:59:11,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:11,787 INFO L495 AbstractCegarLoop]: Abstraction has 15430 states and 21745 transitions. [2023-11-12 00:59:11,788 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) [2023-11-12 00:59:11,788 INFO L276 IsEmpty]: Start isEmpty. Operand 15430 states and 21745 transitions. [2023-11-12 00:59:11,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-12 00:59:11,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:11,795 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] [2023-11-12 00:59:11,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:59:11,796 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)] === [2023-11-12 00:59:11,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:11,797 INFO L85 PathProgramCache]: Analyzing trace with hash 848948629, now seen corresponding path program 1 times [2023-11-12 00:59:11,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:11,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491771701] [2023-11-12 00:59:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:11,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-12 00:59:12,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:12,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491771701] [2023-11-12 00:59:12,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491771701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:12,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:12,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:59:12,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445456983] [2023-11-12 00:59:12,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:12,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:12,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:12,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:12,042 INFO L87 Difference]: Start difference. First operand 15430 states and 21745 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) [2023-11-12 00:59:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:14,995 INFO L93 Difference]: Finished difference Result 42997 states and 60565 transitions. [2023-11-12 00:59:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:14,995 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 [2023-11-12 00:59:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:15,125 INFO L225 Difference]: With dead ends: 42997 [2023-11-12 00:59:15,125 INFO L226 Difference]: Without dead ends: 27578 [2023-11-12 00:59:15,180 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 [2023-11-12 00:59:15,181 INFO L413 NwaCegarLoop]: 2487 mSDtfsCounter, 1910 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:15,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1910 Valid, 4297 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 00:59:15,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27578 states. [2023-11-12 00:59:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27578 to 27536. [2023-11-12 00:59:16,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27536 states, 16672 states have (on average 1.2755518234165066) internal successors, (21266), 17066 states have internal predecessors, (21266), 8720 states have call successors, (8720), 2174 states have call predecessors, (8720), 2141 states have return successors, (8748), 8455 states have call predecessors, (8748), 8716 states have call successors, (8748) [2023-11-12 00:59:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27536 states to 27536 states and 38734 transitions. [2023-11-12 00:59:16,932 INFO L78 Accepts]: Start accepts. Automaton has 27536 states and 38734 transitions. Word has length 92 [2023-11-12 00:59:16,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:16,933 INFO L495 AbstractCegarLoop]: Abstraction has 27536 states and 38734 transitions. [2023-11-12 00:59:16,934 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2023-11-12 00:59:16,934 INFO L276 IsEmpty]: Start isEmpty. Operand 27536 states and 38734 transitions. [2023-11-12 00:59:16,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-12 00:59:16,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:16,937 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:59:16,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:59:16,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-12 00:59:16,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2056449187, now seen corresponding path program 1 times [2023-11-12 00:59:16,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:16,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912735703] [2023-11-12 00:59:16,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:16,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-12 00:59:17,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:17,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912735703] [2023-11-12 00:59:17,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912735703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:59:17,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:59:17,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:59:17,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089905673] [2023-11-12 00:59:17,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:59:17,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:59:17,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:59:17,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:59:17,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:59:17,549 INFO L87 Difference]: Start difference. First operand 27536 states and 38734 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:59:20,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:59:20,034 INFO L93 Difference]: Finished difference Result 55024 states and 77441 transitions. [2023-11-12 00:59:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:59:20,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 122 [2023-11-12 00:59:20,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:59:20,191 INFO L225 Difference]: With dead ends: 55024 [2023-11-12 00:59:20,191 INFO L226 Difference]: Without dead ends: 27568 [2023-11-12 00:59:20,269 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 [2023-11-12 00:59:20,270 INFO L413 NwaCegarLoop]: 1872 mSDtfsCounter, 0 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:59:20,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3742 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 00:59:20,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27568 states. [2023-11-12 00:59:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27568 to 27568. [2023-11-12 00:59:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27568 states, 16704 states have (on average 1.2750239463601531) internal successors, (21298), 17098 states have internal predecessors, (21298), 8720 states have call successors, (8720), 2174 states have call predecessors, (8720), 2141 states have return successors, (8748), 8455 states have call predecessors, (8748), 8716 states have call successors, (8748) [2023-11-12 00:59:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27568 states to 27568 states and 38766 transitions. [2023-11-12 00:59:22,565 INFO L78 Accepts]: Start accepts. Automaton has 27568 states and 38766 transitions. Word has length 122 [2023-11-12 00:59:22,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:59:22,566 INFO L495 AbstractCegarLoop]: Abstraction has 27568 states and 38766 transitions. [2023-11-12 00:59:22,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 00:59:22,566 INFO L276 IsEmpty]: Start isEmpty. Operand 27568 states and 38766 transitions. [2023-11-12 00:59:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-12 00:59:22,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:59:22,569 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:59:22,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:59:22,569 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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)] === [2023-11-12 00:59:22,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:59:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash 788520667, now seen corresponding path program 1 times [2023-11-12 00:59:22,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:59:22,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913917768] [2023-11-12 00:59:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:22,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:59:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:59:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-12 00:59:22,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:59:22,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913917768] [2023-11-12 00:59:22,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913917768] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:59:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277913856] [2023-11-12 00:59:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:59:22,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:59:22,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:22,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:59:22,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56b91337-84a0-406a-95fb-0f1f780cb285/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process