./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:14:55,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:14:55,509 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:14:55,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:14:55,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:14:55,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:14:55,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:14:55,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:14:55,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:14:55,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:14:55,545 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:14:55,545 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:14:55,546 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:14:55,546 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:14:55,547 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:14:55,547 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:14:55,548 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:14:55,549 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:14:55,549 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:14:55,550 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:14:55,550 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:14:55,551 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:14:55,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:14:55,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:14:55,553 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:14:55,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:14:55,554 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:14:55,555 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:14:55,555 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:14:55,556 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:14:55,556 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:14:55,557 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:14:55,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:14:55,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:55,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:14:55,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:14:55,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:14:55,560 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:14:55,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:14:55,560 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:14:55,561 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:14:55,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:14:55,562 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_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b81be647295ba0700d02fa1d093d31284b02ba80deefc4d677fbd988693200b [2023-11-12 00:14:55,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:14:55,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:14:55,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:14:55,893 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:14:55,894 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:14:55,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2023-11-12 00:14:59,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:14:59,900 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:14:59,901 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2023-11-12 00:14:59,951 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/data/1b7953020/9fd7bd25b6c64628a7083aa16195144d/FLAGc886cb3b3 [2023-11-12 00:14:59,970 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/data/1b7953020/9fd7bd25b6c64628a7083aa16195144d [2023-11-12 00:14:59,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:14:59,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:14:59,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:59,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:14:59,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:14:59,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:59" (1/1) ... [2023-11-12 00:14:59,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2b7fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:59, skipping insertion in model container [2023-11-12 00:14:59,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:59" (1/1) ... [2023-11-12 00:15:00,178 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:15:02,875 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_180ce61a-ab76-452c-8884-0e4bedb246dd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2023-11-12 00:15:02,881 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_180ce61a-ab76-452c-8884-0e4bedb246dd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2023-11-12 00:15:02,881 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_180ce61a-ab76-452c-8884-0e4bedb246dd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2023-11-12 00:15:02,882 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_180ce61a-ab76-452c-8884-0e4bedb246dd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2023-11-12 00:15:02,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:02,974 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:15:03,080 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"); [5461] [2023-11-12 00:15:03,082 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)); [5468] [2023-11-12 00:15:03,083 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5475] [2023-11-12 00:15:03,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5569] [2023-11-12 00:15:03,087 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5577] [2023-11-12 00:15:03,087 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inw %w1, %w0": "=a" (value): "Nd" (port)); [5608] [2023-11-12 00:15:03,088 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; outsw": "+S" (addr), "+c" (count): "d" (port)); [5615] [2023-11-12 00:15:03,088 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; insw": "+D" (addr), "+c" (count): "d" (port)); [5622] [2023-11-12 00:15:03,409 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_180ce61a-ab76-452c-8884-0e4bedb246dd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315060,315073] [2023-11-12 00:15:03,410 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_180ce61a-ab76-452c-8884-0e4bedb246dd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315229,315242] [2023-11-12 00:15:03,411 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_180ce61a-ab76-452c-8884-0e4bedb246dd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315396,315409] [2023-11-12 00:15:03,412 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_180ce61a-ab76-452c-8884-0e4bedb246dd/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i[315564,315577] [2023-11-12 00:15:03,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:03,664 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:15:03,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03 WrapperNode [2023-11-12 00:15:03,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:03,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:03,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:15:03,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:15:03,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03" (1/1) ... [2023-11-12 00:15:03,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03" (1/1) ... [2023-11-12 00:15:03,961 INFO L138 Inliner]: procedures = 370, calls = 2290, calls flagged for inlining = 174, calls inlined = 154, statements flattened = 4586 [2023-11-12 00:15:03,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:03,963 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:15:03,963 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:15:03,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:15:03,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03" (1/1) ... [2023-11-12 00:15:03,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03" (1/1) ... [2023-11-12 00:15:03,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03" (1/1) ... [2023-11-12 00:15:03,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03" (1/1) ... [2023-11-12 00:15:04,252 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03" (1/1) ... [2023-11-12 00:15:04,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03" (1/1) ... [2023-11-12 00:15:04,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03" (1/1) ... [2023-11-12 00:15:04,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03" (1/1) ... [2023-11-12 00:15:04,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:15:04,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:15:04,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:15:04,369 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:15:04,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03" (1/1) ... [2023-11-12 00:15:04,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:15:04,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:04,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:15:04,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180ce61a-ab76-452c-8884-0e4bedb246dd/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:15:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_page_lock_of_ei_device [2023-11-12 00:15:04,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_page_lock_of_ei_device [2023-11-12 00:15:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:15:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:15:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_detach [2023-11-12 00:15:04,450 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_detach [2023-11-12 00:15:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 00:15:04,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 00:15:04,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-12 00:15:04,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-12 00:15:04,451 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2023-11-12 00:15:04,451 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2023-11-12 00:15:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure AX88190_init [2023-11-12 00:15:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure AX88190_init [2023-11-12 00:15:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-12 00:15:04,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-12 00:15:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:15:04,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:15:04,456 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2023-11-12 00:15:04,457 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2023-11-12 00:15:04,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-12 00:15:04,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-12 00:15:04,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_70 [2023-11-12 00:15:04,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_70 [2023-11-12 00:15:04,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-12 00:15:04,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-12 00:15:04,457 INFO L130 BoogieDeclarations]: Found specification of procedure ei_receive [2023-11-12 00:15:04,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_receive [2023-11-12 00:15:04,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:15:04,458 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:15:04,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2023-11-12 00:15:04,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_axnet_cs_driver_exit_14_2 [2023-11-12 00:15:04,458 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-12 00:15:04,458 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-12 00:15:04,458 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_release [2023-11-12 00:15:04,459 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_release [2023-11-12 00:15:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-12 00:15:04,459 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-12 00:15:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_write_config_byte [2023-11-12 00:15:04,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_write_config_byte [2023-11-12 00:15:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2023-11-12 00:15:04,459 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2023-11-12 00:15:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-11-12 00:15:04,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-11-12 00:15:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure PRIV [2023-11-12 00:15:04,461 INFO L138 BoogieDeclarations]: Found implementation of procedure PRIV [2023-11-12 00:15:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2023-11-12 00:15:04,461 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2023-11-12 00:15:04,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:15:04,462 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-12 00:15:04,463 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-12 00:15:04,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:15:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-12 00:15:04,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-12 00:15:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-12 00:15:04,464 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-12 00:15:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2023-11-12 00:15:04,464 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2023-11-12 00:15:04,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-12 00:15:04,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-12 00:15:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure NS8390_trigger_send [2023-11-12 00:15:04,466 INFO L138 BoogieDeclarations]: Found implementation of procedure NS8390_trigger_send [2023-11-12 00:15:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure ei_tx_intr [2023-11-12 00:15:04,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_tx_intr [2023-11-12 00:15:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:15:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:15:04,466 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:15:04,466 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:15:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-12 00:15:04,467 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-12 00:15:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-12 00:15:04,467 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-12 00:15:04,467 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-12 00:15:04,467 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-12 00:15:04,468 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-12 00:15:04,468 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-12 00:15:04,468 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-12 00:15:04,468 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-12 00:15:04,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-12 00:15:04,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-12 00:15:04,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:15:04,469 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2023-11-12 00:15:04,469 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2023-11-12 00:15:04,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:15:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-12 00:15:04,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-12 00:15:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:15:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-12 00:15:04,470 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-12 00:15:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure ei_irq_wrapper [2023-11-12 00:15:04,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ei_irq_wrapper [2023-11-12 00:15:04,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-12 00:15:04,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-12 00:15:04,471 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-12 00:15:04,471 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-12 00:15:04,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-12 00:15:04,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-12 00:15:04,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:15:04,472 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-12 00:15:04,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-12 00:15:04,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:15:04,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:15:04,473 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_reset_8390 [2023-11-12 00:15:04,473 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_reset_8390 [2023-11-12 00:15:04,473 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_tx_timeout [2023-11-12 00:15:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_tx_timeout [2023-11-12 00:15:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-12 00:15:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-12 00:15:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:15:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2023-11-12 00:15:04,474 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2023-11-12 00:15:04,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-12 00:15:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-12 00:15:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure axnet_cs_driver_exit [2023-11-12 00:15:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure axnet_cs_driver_exit [2023-11-12 00:15:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:15:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-12 00:15:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-12 00:15:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-12 00:15:04,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-12 00:15:04,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:15:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:15:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-12 00:15:04,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-12 00:15:04,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-12 00:15:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-12 00:15:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-12 00:15:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2023-11-12 00:15:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2023-11-12 00:15:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-12 00:15:04,477 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-12 00:15:04,477 INFO L130 BoogieDeclarations]: Found specification of procedure do_set_multicast_list [2023-11-12 00:15:04,479 INFO L138 BoogieDeclarations]: Found implementation of procedure do_set_multicast_list [2023-11-12 00:15:04,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:15:04,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-12 00:15:04,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-12 00:15:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2023-11-12 00:15:04,484 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2023-11-12 00:15:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:15:04,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:15:05,150 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:15:05,158 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:15:05,591 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 00:15:12,128 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-12 00:15:12,259 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:15:14,027 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:15:14,028 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:15:14,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:14 BoogieIcfgContainer [2023-11-12 00:15:14,034 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:15:14,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:15:14,038 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:15:14,042 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:15:14,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:14:59" (1/3) ... [2023-11-12 00:15:14,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46093227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:14, skipping insertion in model container [2023-11-12 00:15:14,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:03" (2/3) ... [2023-11-12 00:15:14,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46093227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:14, skipping insertion in model container [2023-11-12 00:15:14,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:14" (3/3) ... [2023-11-12 00:15:14,047 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-8390-axnet_cs.cil.i [2023-11-12 00:15:14,069 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:15:14,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-12 00:15:14,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:15:14,177 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;@210a5f86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:15:14,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-12 00:15:14,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 1070 states, 607 states have (on average 1.3031301482701811) internal successors, (791), 631 states have internal predecessors, (791), 400 states have call successors, (400), 62 states have call predecessors, (400), 61 states have return successors, (394), 386 states have call predecessors, (394), 394 states have call successors, (394) [2023-11-12 00:15:14,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-12 00:15:14,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:14,223 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:15:14,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-12 00:15:14,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:14,233 INFO L85 PathProgramCache]: Analyzing trace with hash -973022821, now seen corresponding path program 1 times [2023-11-12 00:15:14,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:14,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537200066] [2023-11-12 00:15:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:14,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-12 00:15:15,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:15,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537200066] [2023-11-12 00:15:15,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537200066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:15,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:15,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:15:15,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664544655] [2023-11-12 00:15:15,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:15,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:15:15,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:15,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:15:15,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:15,407 INFO L87 Difference]: Start difference. First operand has 1070 states, 607 states have (on average 1.3031301482701811) internal successors, (791), 631 states have internal predecessors, (791), 400 states have call successors, (400), 62 states have call predecessors, (400), 61 states have return successors, (394), 386 states have call predecessors, (394), 394 states have call successors, (394) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-12 00:15:18,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:20,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:21,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:21,008 INFO L93 Difference]: Finished difference Result 3100 states and 4667 transitions. [2023-11-12 00:15:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:15:21,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2023-11-12 00:15:21,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:21,060 INFO L225 Difference]: With dead ends: 3100 [2023-11-12 00:15:21,061 INFO L226 Difference]: Without dead ends: 2035 [2023-11-12 00:15:21,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:21,093 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 1468 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:21,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2722 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-12 00:15:21,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2023-11-12 00:15:21,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2031. [2023-11-12 00:15:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 1163 states have (on average 1.294926913155632) internal successors, (1506), 1208 states have internal predecessors, (1506), 747 states have call successors, (747), 119 states have call predecessors, (747), 118 states have return successors, (743), 727 states have call predecessors, (743), 743 states have call successors, (743) [2023-11-12 00:15:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2996 transitions. [2023-11-12 00:15:21,391 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2996 transitions. Word has length 91 [2023-11-12 00:15:21,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:21,393 INFO L495 AbstractCegarLoop]: Abstraction has 2031 states and 2996 transitions. [2023-11-12 00:15:21,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-12 00:15:21,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2996 transitions. [2023-11-12 00:15:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-12 00:15:21,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:21,400 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:15:21,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:15:21,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-12 00:15:21,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:21,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1016280079, now seen corresponding path program 1 times [2023-11-12 00:15:21,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:21,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940050545] [2023-11-12 00:15:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:21,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-12 00:15:21,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:21,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940050545] [2023-11-12 00:15:21,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940050545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:21,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:21,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:15:21,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990776894] [2023-11-12 00:15:21,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:21,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:15:21,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:21,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:15:21,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:21,979 INFO L87 Difference]: Start difference. First operand 2031 states and 2996 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-12 00:15:23,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:25,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:25,436 INFO L93 Difference]: Finished difference Result 5731 states and 8418 transitions. [2023-11-12 00:15:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:15:25,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2023-11-12 00:15:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:25,475 INFO L225 Difference]: With dead ends: 5731 [2023-11-12 00:15:25,476 INFO L226 Difference]: Without dead ends: 3715 [2023-11-12 00:15:25,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:25,492 INFO L413 NwaCegarLoop]: 1430 mSDtfsCounter, 1261 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:25,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 2756 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-12 00:15:25,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2023-11-12 00:15:25,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3684. [2023-11-12 00:15:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 2108 states have (on average 1.2851043643263758) internal successors, (2709), 2190 states have internal predecessors, (2709), 1342 states have call successors, (1342), 230 states have call predecessors, (1342), 231 states have return successors, (1344), 1309 states have call predecessors, (1344), 1338 states have call successors, (1344) [2023-11-12 00:15:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 5395 transitions. [2023-11-12 00:15:25,791 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 5395 transitions. Word has length 99 [2023-11-12 00:15:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:25,792 INFO L495 AbstractCegarLoop]: Abstraction has 3684 states and 5395 transitions. [2023-11-12 00:15:25,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-12 00:15:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 5395 transitions. [2023-11-12 00:15:25,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-12 00:15:25,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:25,795 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 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] [2023-11-12 00:15:25,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:15:25,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-12 00:15:25,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash -670116550, now seen corresponding path program 1 times [2023-11-12 00:15:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:25,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72839432] [2023-11-12 00:15:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:25,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-12 00:15:26,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:26,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72839432] [2023-11-12 00:15:26,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72839432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:26,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:26,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:15:26,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569702526] [2023-11-12 00:15:26,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:26,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:15:26,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:26,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:15:26,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:26,288 INFO L87 Difference]: Start difference. First operand 3684 states and 5395 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-12 00:15:29,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:30,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:31,286 INFO L93 Difference]: Finished difference Result 10072 states and 14685 transitions. [2023-11-12 00:15:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:15:31,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2023-11-12 00:15:31,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:31,346 INFO L225 Difference]: With dead ends: 10072 [2023-11-12 00:15:31,346 INFO L226 Difference]: Without dead ends: 6403 [2023-11-12 00:15:31,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:31,372 INFO L413 NwaCegarLoop]: 1376 mSDtfsCounter, 1213 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:31,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 2708 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-12 00:15:31,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2023-11-12 00:15:31,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 6370. [2023-11-12 00:15:31,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6370 states, 3644 states have (on average 1.280735455543359) internal successors, (4667), 3782 states have internal predecessors, (4667), 2292 states have call successors, (2292), 434 states have call predecessors, (2292), 431 states have return successors, (2300), 2219 states have call predecessors, (2300), 2288 states have call successors, (2300) [2023-11-12 00:15:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6370 states to 6370 states and 9259 transitions. [2023-11-12 00:15:31,934 INFO L78 Accepts]: Start accepts. Automaton has 6370 states and 9259 transitions. Word has length 103 [2023-11-12 00:15:31,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:31,936 INFO L495 AbstractCegarLoop]: Abstraction has 6370 states and 9259 transitions. [2023-11-12 00:15:31,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-12 00:15:31,937 INFO L276 IsEmpty]: Start isEmpty. Operand 6370 states and 9259 transitions. [2023-11-12 00:15:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-12 00:15:31,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:31,941 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:15:31,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:15:31,942 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-12 00:15:31,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:31,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1690345765, now seen corresponding path program 1 times [2023-11-12 00:15:31,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:31,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853430931] [2023-11-12 00:15:31,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:31,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-12 00:15:32,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:32,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853430931] [2023-11-12 00:15:32,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853430931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:32,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:32,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:15:32,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057523304] [2023-11-12 00:15:32,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:32,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:15:32,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:32,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:15:32,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:32,518 INFO L87 Difference]: Start difference. First operand 6370 states and 9259 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-12 00:15:34,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:35,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:35,196 INFO L93 Difference]: Finished difference Result 11245 states and 16319 transitions. [2023-11-12 00:15:35,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:15:35,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 122 [2023-11-12 00:15:35,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:35,240 INFO L225 Difference]: With dead ends: 11245 [2023-11-12 00:15:35,240 INFO L226 Difference]: Without dead ends: 4890 [2023-11-12 00:15:35,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:35,275 INFO L413 NwaCegarLoop]: 1826 mSDtfsCounter, 1386 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:35,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 2505 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-12 00:15:35,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4890 states. [2023-11-12 00:15:35,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4890 to 4851. [2023-11-12 00:15:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 2818 states have (on average 1.2732434350603266) internal successors, (3588), 2962 states have internal predecessors, (3588), 1675 states have call successors, (1675), 394 states have call predecessors, (1675), 355 states have return successors, (1707), 1529 states have call predecessors, (1707), 1671 states have call successors, (1707) [2023-11-12 00:15:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6970 transitions. [2023-11-12 00:15:35,626 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6970 transitions. Word has length 122 [2023-11-12 00:15:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:35,627 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 6970 transitions. [2023-11-12 00:15:35,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-12 00:15:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6970 transitions. [2023-11-12 00:15:35,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-12 00:15:35,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:35,631 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 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] [2023-11-12 00:15:35,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:15:35,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-12 00:15:35,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:35,632 INFO L85 PathProgramCache]: Analyzing trace with hash 794430242, now seen corresponding path program 1 times [2023-11-12 00:15:35,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:35,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436735105] [2023-11-12 00:15:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:35,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-12 00:15:36,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:36,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436735105] [2023-11-12 00:15:36,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436735105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:36,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:36,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:15:36,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310773525] [2023-11-12 00:15:36,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:36,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:15:36,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:36,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:15:36,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:15:36,504 INFO L87 Difference]: Start difference. First operand 4851 states and 6970 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 00:15:40,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:40,833 INFO L93 Difference]: Finished difference Result 4857 states and 6975 transitions. [2023-11-12 00:15:40,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:15:40,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2023-11-12 00:15:40,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:40,872 INFO L225 Difference]: With dead ends: 4857 [2023-11-12 00:15:40,872 INFO L226 Difference]: Without dead ends: 4855 [2023-11-12 00:15:40,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:15:40,877 INFO L413 NwaCegarLoop]: 1352 mSDtfsCounter, 1511 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:40,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 4042 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-12 00:15:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4855 states. [2023-11-12 00:15:41,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 4855. [2023-11-12 00:15:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 2821 states have (on average 1.2729528535980148) internal successors, (3591), 2965 states have internal predecessors, (3591), 1675 states have call successors, (1675), 395 states have call predecessors, (1675), 356 states have return successors, (1707), 1529 states have call predecessors, (1707), 1671 states have call successors, (1707) [2023-11-12 00:15:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 6973 transitions. [2023-11-12 00:15:41,302 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 6973 transitions. Word has length 133 [2023-11-12 00:15:41,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:41,303 INFO L495 AbstractCegarLoop]: Abstraction has 4855 states and 6973 transitions. [2023-11-12 00:15:41,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 00:15:41,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 6973 transitions. [2023-11-12 00:15:41,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-12 00:15:41,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:41,312 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:15:41,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:15:41,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-12 00:15:41,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:41,313 INFO L85 PathProgramCache]: Analyzing trace with hash 43567966, now seen corresponding path program 1 times [2023-11-12 00:15:41,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:41,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138153455] [2023-11-12 00:15:41,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:41,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-12 00:15:42,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:42,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138153455] [2023-11-12 00:15:42,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138153455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:42,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:42,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:15:42,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439721688] [2023-11-12 00:15:42,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:42,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:15:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:42,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:15:42,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:15:42,053 INFO L87 Difference]: Start difference. First operand 4855 states and 6973 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)