./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 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/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_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ --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-9bd2c7f [2023-11-19 05:02:35,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:02:35,497 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:02:35,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:02:35,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:02:35,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:02:35,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:02:35,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:02:35,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:02:35,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:02:35,564 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:02:35,565 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:02:35,565 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:02:35,567 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:02:35,567 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:02:35,568 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:02:35,568 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:02:35,569 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:02:35,569 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:02:35,570 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:02:35,570 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:02:35,571 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:02:35,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:02:35,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:02:35,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:02:35,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:02:35,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:02:35,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:02:35,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:02:35,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:02:35,577 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:02:35,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:02:35,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:02:35,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:35,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:02:35,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:02:35,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:02:35,579 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:02:35,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:02:35,579 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:02:35,579 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:02:35,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:02:35,580 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_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2023-11-19 05:02:35,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:02:35,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:02:35,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:02:35,869 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:02:35,870 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:02:35,871 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2023-11-19 05:02:38,971 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:02:39,613 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:02:39,614 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2023-11-19 05:02:39,665 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/data/effbe159a/33481d49c5f640048d1523ce2364a8dd/FLAG7340976ad [2023-11-19 05:02:39,680 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/data/effbe159a/33481d49c5f640048d1523ce2364a8dd [2023-11-19 05:02:39,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:02:39,684 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:02:39,686 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:39,686 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:02:39,691 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:02:39,692 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:39" (1/1) ... [2023-11-19 05:02:39,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1625a41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:39, skipping insertion in model container [2023-11-19 05:02:39,694 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:39" (1/1) ... [2023-11-19 05:02:39,897 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:02:42,756 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_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2023-11-19 05:02:42,763 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_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2023-11-19 05:02:42,764 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_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2023-11-19 05:02:42,764 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_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2023-11-19 05:02:42,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:42,821 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:02:42,922 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] [2023-11-19 05:02:42,924 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] [2023-11-19 05:02:42,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5301] [2023-11-19 05:02:42,926 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] [2023-11-19 05:02:42,927 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] [2023-11-19 05:02:42,929 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %1,%0": "=q" (ret): "m" (*((unsigned char volatile *)addr)): "memory"); [5425] [2023-11-19 05:02:42,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %1,%0": "=r" (ret): "m" (*((unsigned short volatile *)addr)): "memory"); [5433] [2023-11-19 05:02:42,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [5441] [2023-11-19 05:02:42,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movb %0,%1": : "q" (val), "m" (*((unsigned char volatile *)addr)): "memory"); [5448] [2023-11-19 05:02:42,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movw %0,%1": : "r" (val), "m" (*((unsigned short volatile *)addr)): "memory"); [5455] [2023-11-19 05:02:42,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [5462] [2023-11-19 05:02:42,932 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5499] [2023-11-19 05:02:42,932 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5507] [2023-11-19 05:02:42,933 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outw %w0, %w1": : "a" (value), "Nd" (port)); [5514] [2023-11-19 05:02:42,933 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outl %0, %w1": : "a" (value), "Nd" (port)); [5521] [2023-11-19 05:02:42,933 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inl %w1, %0": "=a" (value): "Nd" (port)); [5529] [2023-11-19 05:02:43,216 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_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2023-11-19 05:02:43,217 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_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2023-11-19 05:02:43,217 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_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2023-11-19 05:02:43,218 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_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2023-11-19 05:02:43,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:43,462 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:02:43,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43 WrapperNode [2023-11-19 05:02:43,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:43,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:43,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:02:43,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:02:43,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,593 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,797 INFO L138 Inliner]: procedures = 418, calls = 2017, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 5463 [2023-11-19 05:02:43,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:43,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:02:43,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:02:43,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:02:43,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:43,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:44,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:44,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:44,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:02:44,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:02:44,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:02:44,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:02:44,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (1/1) ... [2023-11-19 05:02:44,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:44,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:44,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:02:44,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:02:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2023-11-19 05:02:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2023-11-19 05:02:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-19 05:02:44,264 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-19 05:02:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:02:44,265 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:02:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-19 05:02:44,267 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-19 05:02:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:02:44,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:02:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure fst_remove_one [2023-11-19 05:02:44,268 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_remove_one [2023-11-19 05:02:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-19 05:02:44,268 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-19 05:02:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-19 05:02:44,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-19 05:02:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2023-11-19 05:02:44,270 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2023-11-19 05:02:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2023-11-19 05:02:44,270 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2023-11-19 05:02:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2023-11-19 05:02:44,270 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2023-11-19 05:02:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2023-11-19 05:02:44,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2023-11-19 05:02:44,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2023-11-19 05:02:44,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2023-11-19 05:02:44,271 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:02:44,271 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:02:44,271 INFO L130 BoogieDeclarations]: Found specification of procedure fst_close [2023-11-19 05:02:44,272 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_close [2023-11-19 05:02:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-19 05:02:44,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-19 05:02:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-11-19 05:02:44,272 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-11-19 05:02:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:02:44,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:02:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure fst_tx_timeout [2023-11-19 05:02:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_tx_timeout [2023-11-19 05:02:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:02:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:02:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:02:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-19 05:02:44,275 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-19 05:02:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure fst_open [2023-11-19 05:02:44,275 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_open [2023-11-19 05:02:44,276 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2023-11-19 05:02:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2023-11-19 05:02:44,276 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-19 05:02:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-19 05:02:44,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:02:44,276 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 05:02:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 05:02:44,277 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-19 05:02:44,277 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-19 05:02:44,277 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 05:02:44,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 05:02:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:02:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-19 05:02:44,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-19 05:02:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:02:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2023-11-19 05:02:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2023-11-19 05:02:44,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:02:44,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:02:44,280 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2023-11-19 05:02:44,280 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2023-11-19 05:02:44,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-19 05:02:44,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-19 05:02:44,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-19 05:02:44,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-19 05:02:44,281 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-19 05:02:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-19 05:02:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-19 05:02:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-19 05:02:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-19 05:02:44,282 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-19 05:02:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-19 05:02:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-19 05:02:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:02:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-19 05:02:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-19 05:02:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-11-19 05:02:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-11-19 05:02:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_card_lock_of_fst_card_info [2023-11-19 05:02:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_card_lock_of_fst_card_info [2023-11-19 05:02:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:02:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2023-11-19 05:02:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2023-11-19 05:02:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 05:02:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 05:02:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:02:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 05:02:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 05:02:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-11-19 05:02:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-11-19 05:02:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-19 05:02:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-19 05:02:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-11-19 05:02:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-11-19 05:02:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2023-11-19 05:02:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2023-11-19 05:02:44,288 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-19 05:02:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-19 05:02:44,288 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 05:02:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 05:02:44,288 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-19 05:02:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-19 05:02:44,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-19 05:02:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-19 05:02:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-19 05:02:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-19 05:02:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2023-11-19 05:02:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2023-11-19 05:02:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2023-11-19 05:02:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2023-11-19 05:02:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:02:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:02:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:02:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:02:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:02:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:02:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-19 05:02:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-19 05:02:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-19 05:02:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-19 05:02:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:02:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:02:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-19 05:02:44,296 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-19 05:02:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-19 05:02:44,297 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-19 05:02:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-19 05:02:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-19 05:02:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:02:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-19 05:02:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-19 05:02:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:02:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2023-11-19 05:02:44,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2023-11-19 05:02:44,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:02:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 05:02:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 05:02:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:02:44,306 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:02:44,306 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-19 05:02:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2023-11-19 05:02:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-19 05:02:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-19 05:02:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-19 05:02:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-19 05:02:44,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-19 05:02:44,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-19 05:02:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2023-11-19 05:02:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2023-11-19 05:02:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-19 05:02:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-19 05:02:44,308 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2023-11-19 05:02:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2023-11-19 05:02:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 05:02:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 05:02:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-19 05:02:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-19 05:02:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_fst_work_q_lock [2023-11-19 05:02:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_fst_work_q_lock [2023-11-19 05:02:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:02:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:02:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:02:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2023-11-19 05:02:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2023-11-19 05:02:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:02:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:02:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-19 05:02:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-19 05:02:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-19 05:02:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-19 05:02:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure do_bottom_half_tx [2023-11-19 05:02:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure do_bottom_half_tx [2023-11-19 05:02:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2023-11-19 05:02:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2023-11-19 05:02:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-19 05:02:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-19 05:02:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2023-11-19 05:02:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2023-11-19 05:02:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2023-11-19 05:02:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2023-11-19 05:02:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-19 05:02:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-19 05:02:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-19 05:02:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-19 05:02:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2023-11-19 05:02:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2023-11-19 05:02:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2023-11-19 05:02:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2023-11-19 05:02:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:02:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2023-11-19 05:02:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2023-11-19 05:02:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-19 05:02:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-19 05:02:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2023-11-19 05:02:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2023-11-19 05:02:45,108 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:02:45,117 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:02:45,210 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:02:49,430 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-19 05:02:49,642 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:02:51,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:02:51,420 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:02:51,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:51 BoogieIcfgContainer [2023-11-19 05:02:51,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:02:51,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:02:51,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:02:51,444 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:02:51,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:02:39" (1/3) ... [2023-11-19 05:02:51,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f206876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:51, skipping insertion in model container [2023-11-19 05:02:51,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:43" (2/3) ... [2023-11-19 05:02:51,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f206876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:51, skipping insertion in model container [2023-11-19 05:02:51,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:51" (3/3) ... [2023-11-19 05:02:51,449 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2023-11-19 05:02:51,470 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:02:51,470 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-19 05:02:51,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:02:51,577 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;@34242cf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:02:51,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 05:02:51,588 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) [2023-11-19 05:02:51,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 05:02:51,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:51,608 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] [2023-11-19 05:02:51,608 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)] === [2023-11-19 05:02:51,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:51,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1238257012, now seen corresponding path program 1 times [2023-11-19 05:02:51,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:51,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291609516] [2023-11-19 05:02:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:51,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:52,422 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-19 05:02:52,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:52,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291609516] [2023-11-19 05:02:52,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291609516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:52,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:52,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:52,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107049633] [2023-11-19 05:02:52,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:52,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:52,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:52,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:52,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:52,480 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) [2023-11-19 05:02:54,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:54,129 INFO L93 Difference]: Finished difference Result 4351 states and 6444 transitions. [2023-11-19 05:02:54,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:54,132 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 [2023-11-19 05:02:54,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:54,169 INFO L225 Difference]: With dead ends: 4351 [2023-11-19 05:02:54,170 INFO L226 Difference]: Without dead ends: 2865 [2023-11-19 05:02:54,184 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 [2023-11-19 05:02:54,187 INFO L413 NwaCegarLoop]: 1902 mSDtfsCounter, 2054 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:54,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2054 Valid, 3753 Invalid, 554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 05:02:54,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2023-11-19 05:02:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2861. [2023-11-19 05:02:54,560 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) [2023-11-19 05:02:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4155 transitions. [2023-11-19 05:02:54,587 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4155 transitions. Word has length 71 [2023-11-19 05:02:54,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:54,588 INFO L495 AbstractCegarLoop]: Abstraction has 2861 states and 4155 transitions. [2023-11-19 05:02:54,589 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) [2023-11-19 05:02:54,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4155 transitions. [2023-11-19 05:02:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 05:02:54,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:54,597 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] [2023-11-19 05:02:54,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:02:54,597 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)] === [2023-11-19 05:02:54,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:54,598 INFO L85 PathProgramCache]: Analyzing trace with hash 790202311, now seen corresponding path program 1 times [2023-11-19 05:02:54,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:54,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870254011] [2023-11-19 05:02:54,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:54,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-19 05:02:54,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:54,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870254011] [2023-11-19 05:02:54,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870254011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:54,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:54,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:54,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388918020] [2023-11-19 05:02:54,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:54,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:54,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:54,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:54,865 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) [2023-11-19 05:02:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:56,318 INFO L93 Difference]: Finished difference Result 6325 states and 9196 transitions. [2023-11-19 05:02:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:56,319 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 [2023-11-19 05:02:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:56,346 INFO L225 Difference]: With dead ends: 6325 [2023-11-19 05:02:56,347 INFO L226 Difference]: Without dead ends: 3475 [2023-11-19 05:02:56,358 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 [2023-11-19 05:02:56,359 INFO L413 NwaCegarLoop]: 1877 mSDtfsCounter, 1488 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:56,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 3707 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 05:02:56,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2023-11-19 05:02:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3449. [2023-11-19 05:02:56,571 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) [2023-11-19 05:02:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4992 transitions. [2023-11-19 05:02:56,690 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4992 transitions. Word has length 79 [2023-11-19 05:02:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:56,691 INFO L495 AbstractCegarLoop]: Abstraction has 3449 states and 4992 transitions. [2023-11-19 05:02:56,691 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) [2023-11-19 05:02:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4992 transitions. [2023-11-19 05:02:56,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 05:02:56,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:56,696 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] [2023-11-19 05:02:56,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:02:56,697 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)] === [2023-11-19 05:02:56,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:56,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1800172395, now seen corresponding path program 1 times [2023-11-19 05:02:56,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:56,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311846026] [2023-11-19 05:02:56,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:56,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-19 05:02:56,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:56,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311846026] [2023-11-19 05:02:56,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311846026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:56,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:56,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:56,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606923312] [2023-11-19 05:02:56,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:56,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:56,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:56,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:56,865 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) [2023-11-19 05:02:58,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:58,358 INFO L93 Difference]: Finished difference Result 8163 states and 11747 transitions. [2023-11-19 05:02:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:58,358 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 [2023-11-19 05:02:58,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:58,400 INFO L225 Difference]: With dead ends: 8163 [2023-11-19 05:02:58,400 INFO L226 Difference]: Without dead ends: 4725 [2023-11-19 05:02:58,416 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 [2023-11-19 05:02:58,417 INFO L413 NwaCegarLoop]: 1879 mSDtfsCounter, 1592 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 3731 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:58,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 3731 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 05:02:58,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4725 states. [2023-11-19 05:02:58,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4725 to 4697. [2023-11-19 05:02:58,783 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) [2023-11-19 05:02:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4697 states to 4697 states and 6719 transitions. [2023-11-19 05:02:58,814 INFO L78 Accepts]: Start accepts. Automaton has 4697 states and 6719 transitions. Word has length 81 [2023-11-19 05:02:58,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:58,817 INFO L495 AbstractCegarLoop]: Abstraction has 4697 states and 6719 transitions. [2023-11-19 05:02:58,817 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) [2023-11-19 05:02:58,818 INFO L276 IsEmpty]: Start isEmpty. Operand 4697 states and 6719 transitions. [2023-11-19 05:02:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 05:02:58,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:58,822 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] [2023-11-19 05:02:58,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:02:58,823 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)] === [2023-11-19 05:02:58,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:58,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1040478339, now seen corresponding path program 1 times [2023-11-19 05:02:58,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:58,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138657338] [2023-11-19 05:02:58,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:58,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-19 05:02:59,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:59,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138657338] [2023-11-19 05:02:59,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138657338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:59,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:59,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:59,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122196248] [2023-11-19 05:02:59,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:59,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:59,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:59,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:59,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:59,034 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) [2023-11-19 05:03:00,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:00,566 INFO L93 Difference]: Finished difference Result 12983 states and 18522 transitions. [2023-11-19 05:03:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:00,567 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 [2023-11-19 05:03:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:00,716 INFO L225 Difference]: With dead ends: 12983 [2023-11-19 05:03:00,716 INFO L226 Difference]: Without dead ends: 8297 [2023-11-19 05:03:00,738 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 [2023-11-19 05:03:00,742 INFO L413 NwaCegarLoop]: 1896 mSDtfsCounter, 1919 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:00,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 3736 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 05:03:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2023-11-19 05:03:01,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 8263. [2023-11-19 05:03:01,366 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) [2023-11-19 05:03:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8263 states to 8263 states and 11711 transitions. [2023-11-19 05:03:01,465 INFO L78 Accepts]: Start accepts. Automaton has 8263 states and 11711 transitions. Word has length 79 [2023-11-19 05:03:01,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:01,468 INFO L495 AbstractCegarLoop]: Abstraction has 8263 states and 11711 transitions. [2023-11-19 05:03:01,469 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) [2023-11-19 05:03:01,469 INFO L276 IsEmpty]: Start isEmpty. Operand 8263 states and 11711 transitions. [2023-11-19 05:03:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 05:03:01,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:01,475 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] [2023-11-19 05:03:01,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:03:01,476 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)] === [2023-11-19 05:03:01,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:01,477 INFO L85 PathProgramCache]: Analyzing trace with hash -241256624, now seen corresponding path program 1 times [2023-11-19 05:03:01,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:01,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203286825] [2023-11-19 05:03:01,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:01,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:01,788 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-19 05:03:01,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:01,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203286825] [2023-11-19 05:03:01,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203286825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:01,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:01,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:01,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451472205] [2023-11-19 05:03:01,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:01,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:01,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:01,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:01,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:01,793 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) [2023-11-19 05:03:04,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:04,158 INFO L93 Difference]: Finished difference Result 23716 states and 33600 transitions. [2023-11-19 05:03:04,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:04,159 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 [2023-11-19 05:03:04,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:04,269 INFO L225 Difference]: With dead ends: 23716 [2023-11-19 05:03:04,270 INFO L226 Difference]: Without dead ends: 15464 [2023-11-19 05:03:04,300 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 [2023-11-19 05:03:04,301 INFO L413 NwaCegarLoop]: 2127 mSDtfsCounter, 2030 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:04,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 3967 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 05:03:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15464 states. [2023-11-19 05:03:05,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15464 to 15430. [2023-11-19 05:03:05,277 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) [2023-11-19 05:03:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15430 states to 15430 states and 21745 transitions. [2023-11-19 05:03:05,348 INFO L78 Accepts]: Start accepts. Automaton has 15430 states and 21745 transitions. Word has length 80 [2023-11-19 05:03:05,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:05,349 INFO L495 AbstractCegarLoop]: Abstraction has 15430 states and 21745 transitions. [2023-11-19 05:03:05,349 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) [2023-11-19 05:03:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 15430 states and 21745 transitions. [2023-11-19 05:03:05,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 05:03:05,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:05,351 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] [2023-11-19 05:03:05,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:03:05,352 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)] === [2023-11-19 05:03:05,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:05,353 INFO L85 PathProgramCache]: Analyzing trace with hash 848948629, now seen corresponding path program 1 times [2023-11-19 05:03:05,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:05,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832778681] [2023-11-19 05:03:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:05,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-19 05:03:05,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:05,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832778681] [2023-11-19 05:03:05,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832778681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:05,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:05,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:05,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465648860] [2023-11-19 05:03:05,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:05,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:05,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:05,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:05,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:05,612 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) [2023-11-19 05:03:07,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:07,952 INFO L93 Difference]: Finished difference Result 42997 states and 60565 transitions. [2023-11-19 05:03:07,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:07,953 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 [2023-11-19 05:03:07,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:08,089 INFO L225 Difference]: With dead ends: 42997 [2023-11-19 05:03:08,089 INFO L226 Difference]: Without dead ends: 27578 [2023-11-19 05:03:08,151 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 [2023-11-19 05:03:08,152 INFO L413 NwaCegarLoop]: 2487 mSDtfsCounter, 1910 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:08,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1910 Valid, 4297 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 05:03:08,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27578 states. [2023-11-19 05:03:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27578 to 27536. [2023-11-19 05:03:10,286 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) [2023-11-19 05:03:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27536 states to 27536 states and 38734 transitions. [2023-11-19 05:03:10,415 INFO L78 Accepts]: Start accepts. Automaton has 27536 states and 38734 transitions. Word has length 92 [2023-11-19 05:03:10,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:10,417 INFO L495 AbstractCegarLoop]: Abstraction has 27536 states and 38734 transitions. [2023-11-19 05:03:10,417 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) [2023-11-19 05:03:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 27536 states and 38734 transitions. [2023-11-19 05:03:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-19 05:03:10,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:10,420 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] [2023-11-19 05:03:10,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:03:10,420 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)] === [2023-11-19 05:03:10,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:10,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2056449187, now seen corresponding path program 1 times [2023-11-19 05:03:10,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:10,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139245347] [2023-11-19 05:03:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:10,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-19 05:03:10,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139245347] [2023-11-19 05:03:10,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139245347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:10,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:10,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:10,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311947435] [2023-11-19 05:03:10,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:10,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:10,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:10,643 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) [2023-11-19 05:03:12,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:12,583 INFO L93 Difference]: Finished difference Result 55024 states and 77441 transitions. [2023-11-19 05:03:12,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:12,583 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 [2023-11-19 05:03:12,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:12,728 INFO L225 Difference]: With dead ends: 55024 [2023-11-19 05:03:12,728 INFO L226 Difference]: Without dead ends: 27568 [2023-11-19 05:03:12,805 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 [2023-11-19 05:03:12,806 INFO L413 NwaCegarLoop]: 1872 mSDtfsCounter, 0 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:12,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3742 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:03:12,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27568 states. [2023-11-19 05:03:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27568 to 27568. [2023-11-19 05:03:14,493 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) [2023-11-19 05:03:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27568 states to 27568 states and 38766 transitions. [2023-11-19 05:03:14,618 INFO L78 Accepts]: Start accepts. Automaton has 27568 states and 38766 transitions. Word has length 122 [2023-11-19 05:03:14,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:14,619 INFO L495 AbstractCegarLoop]: Abstraction has 27568 states and 38766 transitions. [2023-11-19 05:03:14,619 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) [2023-11-19 05:03:14,619 INFO L276 IsEmpty]: Start isEmpty. Operand 27568 states and 38766 transitions. [2023-11-19 05:03:14,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-19 05:03:14,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:14,622 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] [2023-11-19 05:03:14,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:03:14,622 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)] === [2023-11-19 05:03:14,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash 788520667, now seen corresponding path program 1 times [2023-11-19 05:03:14,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:14,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378182928] [2023-11-19 05:03:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:14,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-19 05:03:14,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:14,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378182928] [2023-11-19 05:03:14,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378182928] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:03:14,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253258336] [2023-11-19 05:03:14,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:14,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:03:14,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:03:14,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:03:15,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29df0a0-4fdc-4d3e-8312-4790bbffc2ad/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:03:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:16,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:03:16,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-19 05:03:16,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:03:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-19 05:03:16,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253258336] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:03:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1090440011] [2023-11-19 05:03:16,247 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2023-11-19 05:03:16,247 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:03:16,251 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:03:16,256 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:03:16,257 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs