./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-mutex_drivers-net-ethernet-micrel-ks8851.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash adad89b7f673beaaf8bb114b70e1447440d8d3333aba6712cecf0b1e8decf472 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:28:59,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:28:59,447 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:28:59,455 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:28:59,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:28:59,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:28:59,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:28:59,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:28:59,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:28:59,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:28:59,506 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:28:59,507 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:28:59,507 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:28:59,508 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:28:59,509 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:28:59,509 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:28:59,510 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:28:59,510 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:28:59,510 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:28:59,511 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:28:59,511 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:28:59,512 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:28:59,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:28:59,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:28:59,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:28:59,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:28:59,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:28:59,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:28:59,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:28:59,517 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:28:59,518 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:28:59,518 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:28:59,519 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:28:59,519 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:28:59,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:59,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:28:59,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:28:59,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:28:59,521 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:28:59,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:28:59,522 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:28:59,522 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:28:59,522 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:28:59,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:28:59,523 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_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adad89b7f673beaaf8bb114b70e1447440d8d3333aba6712cecf0b1e8decf472 [2023-11-23 21:28:59,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:28:59,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:28:59,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:28:59,825 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:28:59,825 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:28:59,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2023-11-23 21:29:02,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:29:03,616 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:29:03,617 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2023-11-23 21:29:03,660 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/data/cee98fca3/b4a425431a99456aa0690759c52f4909/FLAG953d96e9c [2023-11-23 21:29:03,675 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/data/cee98fca3/b4a425431a99456aa0690759c52f4909 [2023-11-23 21:29:03,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:29:03,679 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:29:03,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:03,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:29:03,687 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:29:03,688 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:03" (1/1) ... [2023-11-23 21:29:03,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b471a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:03, skipping insertion in model container [2023-11-23 21:29:03,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:03" (1/1) ... [2023-11-23 21:29:03,852 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:29:06,445 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_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295786,295799] [2023-11-23 21:29:06,451 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_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295952,295965] [2023-11-23 21:29:06,452 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_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296116,296129] [2023-11-23 21:29:06,452 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_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296281,296294] [2023-11-23 21:29:06,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:06,525 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:29:06,647 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"); [5204] [2023-11-23 21:29:06,649 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)); [5211] [2023-11-23 21:29:06,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [5218] [2023-11-23 21:29:06,940 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_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295786,295799] [2023-11-23 21:29:06,940 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_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[295952,295965] [2023-11-23 21:29:06,941 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_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296116,296129] [2023-11-23 21:29:06,941 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_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i[296281,296294] [2023-11-23 21:29:06,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:07,226 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:29:07,234 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:29:07,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07 WrapperNode [2023-11-23 21:29:07,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:07,236 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:07,236 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:29:07,236 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:29:07,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07" (1/1) ... [2023-11-23 21:29:07,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07" (1/1) ... [2023-11-23 21:29:07,598 INFO L138 Inliner]: procedures = 396, calls = 1652, calls flagged for inlining = 231, calls inlined = 193, statements flattened = 4504 [2023-11-23 21:29:07,598 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:07,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:29:07,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:29:07,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:29:07,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07" (1/1) ... [2023-11-23 21:29:07,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07" (1/1) ... [2023-11-23 21:29:07,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07" (1/1) ... [2023-11-23 21:29:07,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07" (1/1) ... [2023-11-23 21:29:07,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07" (1/1) ... [2023-11-23 21:29:07,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07" (1/1) ... [2023-11-23 21:29:07,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07" (1/1) ... [2023-11-23 21:29:07,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07" (1/1) ... [2023-11-23 21:29:07,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:29:07,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:29:07,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:29:07,927 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:29:07,928 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07" (1/1) ... [2023-11-23 21:29:07,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:07,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:07,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:29:07,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7513f6b5-70b0-47e2-b631-e5e7fb0afc51/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:29:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 21:29:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 21:29:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:29:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:29:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ks8851_driver_exit_14_2 [2023-11-23 21:29:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ks8851_driver_exit_14_2 [2023-11-23 21:29:08,001 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 21:29:08,001 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 21:29:08,002 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_resume [2023-11-23 21:29:08,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_resume [2023-11-23 21:29:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-23 21:29:08,003 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-23 21:29:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 21:29:08,003 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 21:29:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2023-11-23 21:29:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2023-11-23 21:29:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2023-11-23 21:29:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2023-11-23 21:29:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:29:08,007 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_stop [2023-11-23 21:29:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_stop [2023-11-23 21:29:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 21:29:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 21:29:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-23 21:29:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-23 21:29:08,008 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-23 21:29:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-23 21:29:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 21:29:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 21:29:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2023-11-23 21:29:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2023-11-23 21:29:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:29:08,009 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2023-11-23 21:29:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2023-11-23 21:29:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-23 21:29:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-23 21:29:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-23 21:29:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-23 21:29:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 21:29:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 21:29:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 21:29:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 21:29:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 21:29:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:29:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2023-11-23 21:29:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2023-11-23 21:29:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 21:29:08,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 21:29:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-23 21:29:08,012 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-23 21:29:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:29:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2023-11-23 21:29:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2023-11-23 21:29:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 21:29:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 21:29:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 21:29:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 21:29:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_ks8851_net [2023-11-23 21:29:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_ks8851_net [2023-11-23 21:29:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg8 [2023-11-23 21:29:08,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg8 [2023-11-23 21:29:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:29:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-23 21:29:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-23 21:29:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-23 21:29:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-23 21:29:08,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2023-11-23 21:29:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2023-11-23 21:29:08,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2023-11-23 21:29:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2023-11-23 21:29:08,018 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg16 [2023-11-23 21:29:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg16 [2023-11-23 21:29:08,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:29:08,018 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2023-11-23 21:29:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2023-11-23 21:29:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_probe [2023-11-23 21:29:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_probe [2023-11-23 21:29:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 21:29:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 21:29:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 21:29:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 21:29:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:29:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:29:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 21:29:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:29:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 21:29:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_put [2023-11-23 21:29:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_put [2023-11-23 21:29:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_ks8851_net [2023-11-23 21:29:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_ks8851_net [2023-11-23 21:29:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-23 21:29:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-23 21:29:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-23 21:29:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-23 21:29:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_write_mac_addr [2023-11-23 21:29:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_write_mac_addr [2023-11-23 21:29:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2023-11-23 21:29:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2023-11-23 21:29:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_suspend [2023-11-23 21:29:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_suspend [2023-11-23 21:29:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:29:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:29:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 21:29:08,025 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 21:29:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2023-11-23 21:29:08,025 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2023-11-23 21:29:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 21:29:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 21:29:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 21:29:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 21:29:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_net_open [2023-11-23 21:29:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_net_open [2023-11-23 21:29:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2023-11-23 21:29:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2023-11-23 21:29:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:29:08,028 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:29:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-23 21:29:08,028 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-23 21:29:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2023-11-23 21:29:08,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2023-11-23 21:29:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-11-23 21:29:08,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-11-23 21:29:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_rx_mode [2023-11-23 21:29:08,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_rx_mode [2023-11-23 21:29:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-23 21:29:08,030 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-23 21:29:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:29:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-23 21:29:08,030 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-23 21:29:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_set_powermode [2023-11-23 21:29:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_set_powermode [2023-11-23 21:29:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2023-11-23 21:29:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2023-11-23 21:29:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:29:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:29:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2023-11-23 21:29:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2023-11-23 21:29:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 21:29:08,036 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 21:29:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-23 21:29:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-23 21:29:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 21:29:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 21:29:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-23 21:29:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-23 21:29:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-23 21:29:08,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-23 21:29:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-11-23 21:29:08,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-11-23 21:29:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-23 21:29:08,046 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-23 21:29:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-23 21:29:08,046 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-23 21:29:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rx_1msg [2023-11-23 21:29:08,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rx_1msg [2023-11-23 21:29:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_get_eeprom_len [2023-11-23 21:29:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_get_eeprom_len [2023-11-23 21:29:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_soft_reset [2023-11-23 21:29:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_soft_reset [2023-11-23 21:29:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-11-23 21:29:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-11-23 21:29:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:29:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 21:29:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 21:29:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_rdreg [2023-11-23 21:29:08,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_rdreg [2023-11-23 21:29:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_nway_reset [2023-11-23 21:29:08,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_nway_reset [2023-11-23 21:29:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2023-11-23 21:29:08,048 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2023-11-23 21:29:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_remove [2023-11-23 21:29:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_remove [2023-11-23 21:29:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 21:29:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 21:29:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2023-11-23 21:29:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2023-11-23 21:29:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure ks8851_wrreg16 [2023-11-23 21:29:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ks8851_wrreg16 [2023-11-23 21:29:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 21:29:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 21:29:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:29:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 21:29:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 21:29:08,788 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:29:08,792 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:29:08,900 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 21:29:13,509 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 21:29:13,648 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:29:15,484 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:29:15,484 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:29:15,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:15 BoogieIcfgContainer [2023-11-23 21:29:15,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:29:15,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:29:15,490 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:29:15,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:29:15,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:29:03" (1/3) ... [2023-11-23 21:29:15,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ecac4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:15, skipping insertion in model container [2023-11-23 21:29:15,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:07" (2/3) ... [2023-11-23 21:29:15,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ecac4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:15, skipping insertion in model container [2023-11-23 21:29:15,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:15" (3/3) ... [2023-11-23 21:29:15,498 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-micrel-ks8851.cil.i [2023-11-23 21:29:15,517 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:29:15,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-23 21:29:15,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:29:15,604 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;@57ef853b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:29:15,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 21:29:15,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 1216 states, 739 states have (on average 1.3288227334235454) internal successors, (982), 752 states have internal predecessors, (982), 394 states have call successors, (394), 83 states have call predecessors, (394), 82 states have return successors, (385), 384 states have call predecessors, (385), 385 states have call successors, (385) [2023-11-23 21:29:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-23 21:29:15,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:15,643 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:15,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:29:15,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:15,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1823725257, now seen corresponding path program 1 times [2023-11-23 21:29:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:15,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376329456] [2023-11-23 21:29:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:15,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2023-11-23 21:29:16,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:16,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376329456] [2023-11-23 21:29:16,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376329456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:16,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:16,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:16,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615169599] [2023-11-23 21:29:16,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:16,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:16,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:16,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:16,795 INFO L87 Difference]: Start difference. First operand has 1216 states, 739 states have (on average 1.3288227334235454) internal successors, (982), 752 states have internal predecessors, (982), 394 states have call successors, (394), 83 states have call predecessors, (394), 82 states have return successors, (385), 384 states have call predecessors, (385), 385 states have call successors, (385) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 21:29:19,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:29:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:22,110 INFO L93 Difference]: Finished difference Result 3403 states and 5110 transitions. [2023-11-23 21:29:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:22,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 191 [2023-11-23 21:29:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:22,159 INFO L225 Difference]: With dead ends: 3403 [2023-11-23 21:29:22,159 INFO L226 Difference]: Without dead ends: 2204 [2023-11-23 21:29:22,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:22,185 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 1510 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:22,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 2848 Invalid, 626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-23 21:29:22,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2023-11-23 21:29:22,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2185. [2023-11-23 21:29:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2185 states, 1329 states have (on average 1.325056433408578) internal successors, (1761), 1355 states have internal predecessors, (1761), 694 states have call successors, (694), 162 states have call predecessors, (694), 159 states have return successors, (732), 679 states have call predecessors, (732), 690 states have call successors, (732) [2023-11-23 21:29:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 3187 transitions. [2023-11-23 21:29:22,492 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 3187 transitions. Word has length 191 [2023-11-23 21:29:22,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:22,497 INFO L495 AbstractCegarLoop]: Abstraction has 2185 states and 3187 transitions. [2023-11-23 21:29:22,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 21:29:22,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 3187 transitions. [2023-11-23 21:29:22,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-23 21:29:22,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:22,506 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:22,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:29:22,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:29:22,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2124802202, now seen corresponding path program 1 times [2023-11-23 21:29:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:22,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822670225] [2023-11-23 21:29:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:22,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2023-11-23 21:29:23,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822670225] [2023-11-23 21:29:23,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822670225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:23,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:23,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:23,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353531152] [2023-11-23 21:29:23,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:23,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:23,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:23,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:23,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:23,014 INFO L87 Difference]: Start difference. First operand 2185 states and 3187 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 21:29:26,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:29:27,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:27,706 INFO L93 Difference]: Finished difference Result 6398 states and 9330 transitions. [2023-11-23 21:29:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:27,707 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 195 [2023-11-23 21:29:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:27,750 INFO L225 Difference]: With dead ends: 6398 [2023-11-23 21:29:27,750 INFO L226 Difference]: Without dead ends: 4248 [2023-11-23 21:29:27,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:27,765 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 1602 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:27,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 2792 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-23 21:29:27,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2023-11-23 21:29:28,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 4244. [2023-11-23 21:29:28,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4244 states, 2600 states have (on average 1.3242307692307693) internal successors, (3443), 2644 states have internal predecessors, (3443), 1326 states have call successors, (1326), 320 states have call predecessors, (1326), 315 states have return successors, (1406), 1303 states have call predecessors, (1406), 1322 states have call successors, (1406) [2023-11-23 21:29:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4244 states to 4244 states and 6175 transitions. [2023-11-23 21:29:28,084 INFO L78 Accepts]: Start accepts. Automaton has 4244 states and 6175 transitions. Word has length 195 [2023-11-23 21:29:28,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:28,086 INFO L495 AbstractCegarLoop]: Abstraction has 4244 states and 6175 transitions. [2023-11-23 21:29:28,086 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-23 21:29:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4244 states and 6175 transitions. [2023-11-23 21:29:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-23 21:29:28,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:28,092 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:28,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:29:28,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:29:28,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:28,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1156590900, now seen corresponding path program 1 times [2023-11-23 21:29:28,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:28,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378676947] [2023-11-23 21:29:28,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:28,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2023-11-23 21:29:28,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378676947] [2023-11-23 21:29:28,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378676947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:28,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:28,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:28,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630494756] [2023-11-23 21:29:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:28,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:28,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:28,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:28,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:28,573 INFO L87 Difference]: Start difference. First operand 4244 states and 6175 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:29:32,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:29:33,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:33,707 INFO L93 Difference]: Finished difference Result 12226 states and 17709 transitions. [2023-11-23 21:29:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:33,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 195 [2023-11-23 21:29:33,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:33,780 INFO L225 Difference]: With dead ends: 12226 [2023-11-23 21:29:33,781 INFO L226 Difference]: Without dead ends: 8017 [2023-11-23 21:29:33,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:33,809 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1462 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:33,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 2754 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-23 21:29:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8017 states. [2023-11-23 21:29:34,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8017 to 7992. [2023-11-23 21:29:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7992 states, 4864 states have (on average 1.3053042763157894) internal successors, (6349), 4958 states have internal predecessors, (6349), 2500 states have call successors, (2500), 634 states have call predecessors, (2500), 625 states have return successors, (2600), 2447 states have call predecessors, (2600), 2496 states have call successors, (2600) [2023-11-23 21:29:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7992 states to 7992 states and 11449 transitions. [2023-11-23 21:29:34,586 INFO L78 Accepts]: Start accepts. Automaton has 7992 states and 11449 transitions. Word has length 195 [2023-11-23 21:29:34,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:34,587 INFO L495 AbstractCegarLoop]: Abstraction has 7992 states and 11449 transitions. [2023-11-23 21:29:34,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:29:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 7992 states and 11449 transitions. [2023-11-23 21:29:34,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-23 21:29:34,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:34,594 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:34,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:29:34,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:29:34,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:34,596 INFO L85 PathProgramCache]: Analyzing trace with hash -378884235, now seen corresponding path program 1 times [2023-11-23 21:29:34,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:34,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949419386] [2023-11-23 21:29:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:34,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2023-11-23 21:29:34,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:34,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949419386] [2023-11-23 21:29:34,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949419386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:34,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:34,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:34,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433054710] [2023-11-23 21:29:34,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:34,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:34,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:34,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:34,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:34,981 INFO L87 Difference]: Start difference. First operand 7992 states and 11449 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:29:38,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:29:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:39,548 INFO L93 Difference]: Finished difference Result 19306 states and 27579 transitions. [2023-11-23 21:29:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:39,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 196 [2023-11-23 21:29:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:39,642 INFO L225 Difference]: With dead ends: 19306 [2023-11-23 21:29:39,642 INFO L226 Difference]: Without dead ends: 11349 [2023-11-23 21:29:39,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:39,687 INFO L413 NwaCegarLoop]: 1415 mSDtfsCounter, 1556 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:39,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 2798 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-23 21:29:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11349 states. [2023-11-23 21:29:40,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11349 to 11324. [2023-11-23 21:29:40,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11324 states, 6870 states have (on average 1.2921397379912665) internal successors, (8877), 7020 states have internal predecessors, (8877), 3528 states have call successors, (3528), 936 states have call predecessors, (3528), 923 states have return successors, (3672), 3435 states have call predecessors, (3672), 3524 states have call successors, (3672) [2023-11-23 21:29:40,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11324 states to 11324 states and 16077 transitions. [2023-11-23 21:29:40,474 INFO L78 Accepts]: Start accepts. Automaton has 11324 states and 16077 transitions. Word has length 196 [2023-11-23 21:29:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:40,476 INFO L495 AbstractCegarLoop]: Abstraction has 11324 states and 16077 transitions. [2023-11-23 21:29:40,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 21:29:40,476 INFO L276 IsEmpty]: Start isEmpty. Operand 11324 states and 16077 transitions. [2023-11-23 21:29:40,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-11-23 21:29:40,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:40,482 INFO L195 NwaCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:40,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:29:40,483 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:29:40,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash -709628904, now seen corresponding path program 1 times [2023-11-23 21:29:40,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:40,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428239797] [2023-11-23 21:29:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:40,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2023-11-23 21:29:40,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:40,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428239797] [2023-11-23 21:29:40,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428239797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:40,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:40,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:40,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740811072] [2023-11-23 21:29:40,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:40,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:40,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:40,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:40,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:40,824 INFO L87 Difference]: Start difference. First operand 11324 states and 16077 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 21:29:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:45,137 INFO L93 Difference]: Finished difference Result 27771 states and 39369 transitions. [2023-11-23 21:29:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:45,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 215 [2023-11-23 21:29:45,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:45,243 INFO L225 Difference]: With dead ends: 27771 [2023-11-23 21:29:45,243 INFO L226 Difference]: Without dead ends: 16482 [2023-11-23 21:29:45,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:45,305 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1571 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:45,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 2959 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 21:29:45,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16482 states. [2023-11-23 21:29:46,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16482 to 16449. [2023-11-23 21:29:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16449 states, 9973 states have (on average 1.2853705003509475) internal successors, (12819), 10217 states have internal predecessors, (12819), 5106 states have call successors, (5106), 1386 states have call predecessors, (5106), 1367 states have return successors, (5286), 4947 states have call predecessors, (5286), 5102 states have call successors, (5286) [2023-11-23 21:29:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16449 states to 16449 states and 23211 transitions. [2023-11-23 21:29:46,482 INFO L78 Accepts]: Start accepts. Automaton has 16449 states and 23211 transitions. Word has length 215 [2023-11-23 21:29:46,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:46,483 INFO L495 AbstractCegarLoop]: Abstraction has 16449 states and 23211 transitions. [2023-11-23 21:29:46,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 21:29:46,483 INFO L276 IsEmpty]: Start isEmpty. Operand 16449 states and 23211 transitions. [2023-11-23 21:29:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-11-23 21:29:46,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:46,488 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:46,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:29:46,489 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 21:29:46,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1372012445, now seen corresponding path program 1 times [2023-11-23 21:29:46,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:46,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080330635] [2023-11-23 21:29:46,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:46,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2023-11-23 21:29:46,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:46,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080330635] [2023-11-23 21:29:46,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080330635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:46,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:46,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:46,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755745505] [2023-11-23 21:29:46,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:46,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:46,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:46,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:46,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:46,865 INFO L87 Difference]: Start difference. First operand 16449 states and 23211 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26)