./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-netconsole.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:12:59,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:12:59,570 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:12:59,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:12:59,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:12:59,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:12:59,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:12:59,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:12:59,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:12:59,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:12:59,609 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:12:59,610 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:12:59,611 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:12:59,611 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:12:59,612 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:12:59,613 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:12:59,613 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:12:59,614 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:12:59,614 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:12:59,615 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:12:59,616 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:12:59,617 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:12:59,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:12:59,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:12:59,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:12:59,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:12:59,621 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:12:59,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:12:59,622 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:12:59,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:12:59,623 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:12:59,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:12:59,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:12:59,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:12:59,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:12:59,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:12:59,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:12:59,626 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:12:59,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:12:59,627 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:12:59,627 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:12:59,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:12:59,627 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_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df [2023-11-19 05:12:59,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:12:59,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:12:59,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:12:59,971 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:12:59,971 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:12:59,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2023-11-19 05:13:03,319 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:13:04,004 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:13:04,005 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2023-11-19 05:13:04,046 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/data/851030900/3d45248724684e3a94decf9414ba6b28/FLAGbffd7b28f [2023-11-19 05:13:04,064 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/data/851030900/3d45248724684e3a94decf9414ba6b28 [2023-11-19 05:13:04,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:13:04,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:13:04,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:13:04,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:13:04,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:13:04,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:13:04" (1/1) ... [2023-11-19 05:13:04,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f31b677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:04, skipping insertion in model container [2023-11-19 05:13:04,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:13:04" (1/1) ... [2023-11-19 05:13:04,267 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:13:06,401 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_8f73b91d-4e9f-49e5-b663-833cdd4418b7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2023-11-19 05:13:06,406 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_8f73b91d-4e9f-49e5-b663-833cdd4418b7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2023-11-19 05:13:06,407 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_8f73b91d-4e9f-49e5-b663-833cdd4418b7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2023-11-19 05:13:06,408 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_8f73b91d-4e9f-49e5-b663-833cdd4418b7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2023-11-19 05:13:06,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:13:06,473 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:13:06,659 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5224] [2023-11-19 05:13:06,665 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5227] [2023-11-19 05:13:06,665 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5230] [2023-11-19 05:13:06,666 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5233] [2023-11-19 05:13:06,668 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5264] [2023-11-19 05:13:06,672 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5267] [2023-11-19 05:13:06,672 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5270] [2023-11-19 05:13:06,673 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5273] [2023-11-19 05:13:06,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5304] [2023-11-19 05:13:06,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5307] [2023-11-19 05:13:06,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5310] [2023-11-19 05:13:06,674 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5313] [2023-11-19 05:13:06,675 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5344] [2023-11-19 05:13:06,675 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5347] [2023-11-19 05:13:06,675 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5350] [2023-11-19 05:13:06,676 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5353] [2023-11-19 05:13:06,806 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_8f73b91d-4e9f-49e5-b663-833cdd4418b7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2023-11-19 05:13:06,806 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_8f73b91d-4e9f-49e5-b663-833cdd4418b7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2023-11-19 05:13:06,807 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_8f73b91d-4e9f-49e5-b663-833cdd4418b7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2023-11-19 05:13:06,807 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_8f73b91d-4e9f-49e5-b663-833cdd4418b7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2023-11-19 05:13:06,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:13:06,981 WARN L675 CHandler]: The function __bad_size_call_parameter is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:13:06,981 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:13:06,989 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:13:06,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06 WrapperNode [2023-11-19 05:13:06,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:13:06,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:13:06,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:13:06,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:13:07,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06" (1/1) ... [2023-11-19 05:13:07,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06" (1/1) ... [2023-11-19 05:13:07,223 INFO L138 Inliner]: procedures = 289, calls = 1055, calls flagged for inlining = 163, calls inlined = 153, statements flattened = 3421 [2023-11-19 05:13:07,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:13:07,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:13:07,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:13:07,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:13:07,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06" (1/1) ... [2023-11-19 05:13:07,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06" (1/1) ... [2023-11-19 05:13:07,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06" (1/1) ... [2023-11-19 05:13:07,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06" (1/1) ... [2023-11-19 05:13:07,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06" (1/1) ... [2023-11-19 05:13:07,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06" (1/1) ... [2023-11-19 05:13:07,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06" (1/1) ... [2023-11-19 05:13:07,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06" (1/1) ... [2023-11-19 05:13:07,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:13:07,526 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:13:07,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:13:07,527 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:13:07,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06" (1/1) ... [2023-11-19 05:13:07,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:13:07,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:13:07,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:13:07,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f73b91d-4e9f-49e5-b663-833cdd4418b7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:13:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure show_enabled [2023-11-19 05:13:07,613 INFO L138 BoogieDeclarations]: Found implementation of procedure show_enabled [2023-11-19 05:13:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdevice_notifier [2023-11-19 05:13:07,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdevice_notifier [2023-11-19 05:13:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:13:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:13:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:13:07,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:13:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:13:07,614 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:13:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_mac [2023-11-19 05:13:07,614 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_mac [2023-11-19 05:13:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_put [2023-11-19 05:13:07,614 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_put [2023-11-19 05:13:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_ip [2023-11-19 05:13:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_ip [2023-11-19 05:13:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:13:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:13:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2023-11-19 05:13:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure show_dev_name [2023-11-19 05:13:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure show_dev_name [2023-11-19 05:13:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice_notifier [2023-11-19 05:13:07,615 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice_notifier [2023-11-19 05:13:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure drop_netconsole_target [2023-11-19 05:13:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_netconsole_target [2023-11-19 05:13:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure free_param_target [2023-11-19 05:13:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure free_param_target [2023-11-19 05:13:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:13:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:13:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_get [2023-11-19 05:13:07,616 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_get [2023-11-19 05:13:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_mac [2023-11-19 05:13:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_mac [2023-11-19 05:13:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_ip [2023-11-19 05:13:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_ip [2023-11-19 05:13:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:13:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:13:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-19 05:13:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-19 05:13:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_netconsole_target [2023-11-19 05:13:07,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_netconsole_target [2023-11-19 05:13:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:13:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:13:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-19 05:13:07,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-19 05:13:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-19 05:13:07,618 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-19 05:13:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:13:07,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:13:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2023-11-19 05:13:07,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2023-11-19 05:13:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:13:07,619 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:13:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_release [2023-11-19 05:13:07,619 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_release [2023-11-19 05:13:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_show [2023-11-19 05:13:07,619 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_show [2023-11-19 05:13:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure make_netconsole_target [2023-11-19 05:13:07,620 INFO L138 BoogieDeclarations]: Found implementation of procedure make_netconsole_target [2023-11-19 05:13:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:13:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:13:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_cleanup [2023-11-19 05:13:07,620 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_cleanup [2023-11-19 05:13:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:13:07,620 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:13:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_setup [2023-11-19 05:13:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_setup [2023-11-19 05:13:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-19 05:13:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-19 05:13:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 05:13:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 05:13:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-19 05:13:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-19 05:13:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 05:13:07,622 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 05:13:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_port [2023-11-19 05:13:07,622 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_port [2023-11-19 05:13:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-19 05:13:07,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-19 05:13:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure strnchr [2023-11-19 05:13:07,622 INFO L138 BoogieDeclarations]: Found implementation of procedure strnchr [2023-11-19 05:13:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtou16 [2023-11-19 05:13:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtou16 [2023-11-19 05:13:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:13:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 05:13:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 05:13:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:13:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-19 05:13:07,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-19 05:13:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:13:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-11-19 05:13:07,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-11-19 05:13:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure store_enabled [2023-11-19 05:13:07,624 INFO L138 BoogieDeclarations]: Found implementation of procedure store_enabled [2023-11-19 05:13:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_ip [2023-11-19 05:13:07,624 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_ip [2023-11-19 05:13:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2023-11-19 05:13:07,624 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2023-11-19 05:13:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2023-11-19 05:13:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2023-11-19 05:13:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:13:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:13:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure to_target [2023-11-19 05:13:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure to_target [2023-11-19 05:13:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-11-19 05:13:07,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-11-19 05:13:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_put [2023-11-19 05:13:07,626 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_put [2023-11-19 05:13:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:13:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_mac [2023-11-19 05:13:07,626 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_mac [2023-11-19 05:13:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure in6_pton [2023-11-19 05:13:07,626 INFO L138 BoogieDeclarations]: Found implementation of procedure in6_pton [2023-11-19 05:13:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:13:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-19 05:13:07,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-19 05:13:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:13:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 05:13:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 05:13:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:13:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 05:13:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_ip [2023-11-19 05:13:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_ip [2023-11-19 05:13:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure in_aton [2023-11-19 05:13:07,627 INFO L138 BoogieDeclarations]: Found implementation of procedure in_aton [2023-11-19 05:13:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-19 05:13:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-19 05:13:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-19 05:13:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-19 05:13:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure store_dev_name [2023-11-19 05:13:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure store_dev_name [2023-11-19 05:13:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_port [2023-11-19 05:13:07,628 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_port [2023-11-19 05:13:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_store [2023-11-19 05:13:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_store [2023-11-19 05:13:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:13:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_port [2023-11-19 05:13:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_port [2023-11-19 05:13:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-19 05:13:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-19 05:13:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_name [2023-11-19 05:13:07,629 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_name [2023-11-19 05:13:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_port [2023-11-19 05:13:07,630 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_port [2023-11-19 05:13:07,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:13:07,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:13:08,341 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:13:08,348 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:13:08,547 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:13:11,447 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-19 05:13:11,558 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:13:12,249 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:13:12,249 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-19 05:13:12,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:13:12 BoogieIcfgContainer [2023-11-19 05:13:12,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:13:12,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:13:12,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:13:12,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:13:12,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:13:04" (1/3) ... [2023-11-19 05:13:12,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab10464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:13:12, skipping insertion in model container [2023-11-19 05:13:12,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:06" (2/3) ... [2023-11-19 05:13:12,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab10464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:13:12, skipping insertion in model container [2023-11-19 05:13:12,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:13:12" (3/3) ... [2023-11-19 05:13:12,273 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2023-11-19 05:13:12,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:13:12,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-19 05:13:12,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:13:12,391 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;@110a0605, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:13:12,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 05:13:12,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 1165 states, 694 states have (on average 1.3097982708933718) internal successors, (909), 703 states have internal predecessors, (909), 405 states have call successors, (405), 64 states have call predecessors, (405), 63 states have return successors, (400), 400 states have call predecessors, (400), 400 states have call successors, (400) [2023-11-19 05:13:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2023-11-19 05:13:12,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:12,476 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:12,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:13:12,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash -506074426, now seen corresponding path program 1 times [2023-11-19 05:13:12,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:12,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22191942] [2023-11-19 05:13:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:12,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21756 trivial. 0 not checked. [2023-11-19 05:13:14,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:14,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22191942] [2023-11-19 05:13:14,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22191942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:14,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:14,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:13:14,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059150873] [2023-11-19 05:13:14,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:14,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:14,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:14,515 INFO L87 Difference]: Start difference. First operand has 1165 states, 694 states have (on average 1.3097982708933718) internal successors, (909), 703 states have internal predecessors, (909), 405 states have call successors, (405), 64 states have call predecessors, (405), 63 states have return successors, (400), 400 states have call predecessors, (400), 400 states have call successors, (400) Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2023-11-19 05:13:15,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:15,439 INFO L93 Difference]: Finished difference Result 3070 states and 4539 transitions. [2023-11-19 05:13:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:15,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 761 [2023-11-19 05:13:15,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:15,493 INFO L225 Difference]: With dead ends: 3070 [2023-11-19 05:13:15,495 INFO L226 Difference]: Without dead ends: 2045 [2023-11-19 05:13:15,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:15,519 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1406 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:15,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 2980 Invalid, 350 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:13:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2023-11-19 05:13:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 2041. [2023-11-19 05:13:15,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1242 states have (on average 1.321256038647343) internal successors, (1641), 1258 states have internal predecessors, (1641), 675 states have call successors, (675), 122 states have call predecessors, (675), 121 states have return successors, (671), 671 states have call predecessors, (671), 671 states have call successors, (671) [2023-11-19 05:13:15,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2987 transitions. [2023-11-19 05:13:15,862 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2987 transitions. Word has length 761 [2023-11-19 05:13:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:15,870 INFO L495 AbstractCegarLoop]: Abstraction has 2041 states and 2987 transitions. [2023-11-19 05:13:15,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2023-11-19 05:13:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2987 transitions. [2023-11-19 05:13:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2023-11-19 05:13:15,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:15,910 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:15,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:13:15,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:13:15,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash -754052760, now seen corresponding path program 1 times [2023-11-19 05:13:15,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:15,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830904305] [2023-11-19 05:13:15,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:15,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-19 05:13:16,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830904305] [2023-11-19 05:13:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830904305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:16,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:16,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:13:16,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288389775] [2023-11-19 05:13:16,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:16,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:16,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:16,772 INFO L87 Difference]: Start difference. First operand 2041 states and 2987 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 05:13:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:17,600 INFO L93 Difference]: Finished difference Result 4925 states and 7151 transitions. [2023-11-19 05:13:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:17,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 790 [2023-11-19 05:13:17,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:17,640 INFO L225 Difference]: With dead ends: 4925 [2023-11-19 05:13:17,640 INFO L226 Difference]: Without dead ends: 3033 [2023-11-19 05:13:17,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:17,661 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1382 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:17,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 3024 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:13:17,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2023-11-19 05:13:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 3014. [2023-11-19 05:13:17,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 1836 states have (on average 1.3202614379084967) internal successors, (2424), 1863 states have internal predecessors, (2424), 969 states have call successors, (969), 207 states have call predecessors, (969), 206 states have return successors, (965), 960 states have call predecessors, (965), 965 states have call successors, (965) [2023-11-19 05:13:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 4358 transitions. [2023-11-19 05:13:18,010 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 4358 transitions. Word has length 790 [2023-11-19 05:13:18,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:18,016 INFO L495 AbstractCegarLoop]: Abstraction has 3014 states and 4358 transitions. [2023-11-19 05:13:18,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 05:13:18,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 4358 transitions. [2023-11-19 05:13:18,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2023-11-19 05:13:18,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:18,059 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:18,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:13:18,060 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:13:18,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash 537797666, now seen corresponding path program 1 times [2023-11-19 05:13:18,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:18,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398598242] [2023-11-19 05:13:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:18,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-19 05:13:18,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:18,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398598242] [2023-11-19 05:13:18,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398598242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:18,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:18,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:13:18,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918292181] [2023-11-19 05:13:18,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:18,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:18,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:18,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:18,839 INFO L87 Difference]: Start difference. First operand 3014 states and 4358 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 05:13:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:19,787 INFO L93 Difference]: Finished difference Result 7844 states and 11269 transitions. [2023-11-19 05:13:19,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:19,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 788 [2023-11-19 05:13:19,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:19,832 INFO L225 Difference]: With dead ends: 7844 [2023-11-19 05:13:19,832 INFO L226 Difference]: Without dead ends: 4979 [2023-11-19 05:13:19,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:19,851 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 1384 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:19,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 3056 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:13:19,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2023-11-19 05:13:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4960. [2023-11-19 05:13:20,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4960 states, 3024 states have (on average 1.3194444444444444) internal successors, (3990), 3073 states have internal predecessors, (3990), 1557 states have call successors, (1557), 377 states have call predecessors, (1557), 376 states have return successors, (1553), 1538 states have call predecessors, (1553), 1553 states have call successors, (1553) [2023-11-19 05:13:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 7100 transitions. [2023-11-19 05:13:20,254 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 7100 transitions. Word has length 788 [2023-11-19 05:13:20,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:20,255 INFO L495 AbstractCegarLoop]: Abstraction has 4960 states and 7100 transitions. [2023-11-19 05:13:20,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 05:13:20,256 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 7100 transitions. [2023-11-19 05:13:20,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2023-11-19 05:13:20,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:20,269 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:20,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:13:20,270 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:13:20,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:20,271 INFO L85 PathProgramCache]: Analyzing trace with hash -79327191, now seen corresponding path program 1 times [2023-11-19 05:13:20,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:20,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120074618] [2023-11-19 05:13:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:20,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-19 05:13:20,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120074618] [2023-11-19 05:13:20,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120074618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:20,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:20,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:13:20,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904684485] [2023-11-19 05:13:20,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:20,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:20,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:20,923 INFO L87 Difference]: Start difference. First operand 4960 states and 7100 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 05:13:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:22,074 INFO L93 Difference]: Finished difference Result 13638 states and 19431 transitions. [2023-11-19 05:13:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 789 [2023-11-19 05:13:22,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:22,151 INFO L225 Difference]: With dead ends: 13638 [2023-11-19 05:13:22,151 INFO L226 Difference]: Without dead ends: 8827 [2023-11-19 05:13:22,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:22,182 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 1383 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:22,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 3117 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:13:22,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8827 states. [2023-11-19 05:13:22,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8827 to 8808. [2023-11-19 05:13:23,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8808 states, 5375 states have (on average 1.318325581395349) internal successors, (7086), 5468 states have internal predecessors, (7086), 2714 states have call successors, (2714), 717 states have call predecessors, (2714), 716 states have return successors, (2710), 2675 states have call predecessors, (2710), 2710 states have call successors, (2710) [2023-11-19 05:13:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8808 states to 8808 states and 12510 transitions. [2023-11-19 05:13:23,092 INFO L78 Accepts]: Start accepts. Automaton has 8808 states and 12510 transitions. Word has length 789 [2023-11-19 05:13:23,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:23,095 INFO L495 AbstractCegarLoop]: Abstraction has 8808 states and 12510 transitions. [2023-11-19 05:13:23,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 05:13:23,097 INFO L276 IsEmpty]: Start isEmpty. Operand 8808 states and 12510 transitions. [2023-11-19 05:13:23,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2023-11-19 05:13:23,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:23,116 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:23,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:13:23,117 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:13:23,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:23,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1145401088, now seen corresponding path program 1 times [2023-11-19 05:13:23,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:23,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574434868] [2023-11-19 05:13:23,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:23,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-19 05:13:23,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:23,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574434868] [2023-11-19 05:13:23,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574434868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:23,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:23,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:13:23,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856301407] [2023-11-19 05:13:23,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:23,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:23,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:23,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:23,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:23,873 INFO L87 Difference]: Start difference. First operand 8808 states and 12510 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 05:13:25,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:25,304 INFO L93 Difference]: Finished difference Result 25050 states and 35459 transitions. [2023-11-19 05:13:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:25,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 791 [2023-11-19 05:13:25,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:25,437 INFO L225 Difference]: With dead ends: 25050 [2023-11-19 05:13:25,437 INFO L226 Difference]: Without dead ends: 16391 [2023-11-19 05:13:25,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:25,494 INFO L413 NwaCegarLoop]: 1733 mSDtfsCounter, 1381 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:25,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 3225 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:13:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16391 states. [2023-11-19 05:13:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16391 to 16372. [2023-11-19 05:13:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16372 states, 10002 states have (on average 1.3167366526694662) internal successors, (13170), 10183 states have internal predecessors, (13170), 4971 states have call successors, (4971), 1397 states have call predecessors, (4971), 1396 states have return successors, (4967), 4892 states have call predecessors, (4967), 4967 states have call successors, (4967) [2023-11-19 05:13:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16372 states to 16372 states and 23108 transitions. [2023-11-19 05:13:27,042 INFO L78 Accepts]: Start accepts. Automaton has 16372 states and 23108 transitions. Word has length 791 [2023-11-19 05:13:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:27,043 INFO L495 AbstractCegarLoop]: Abstraction has 16372 states and 23108 transitions. [2023-11-19 05:13:27,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 05:13:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 16372 states and 23108 transitions. [2023-11-19 05:13:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2023-11-19 05:13:27,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:27,058 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:27,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:13:27,059 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:13:27,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:27,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1312823941, now seen corresponding path program 1 times [2023-11-19 05:13:27,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:27,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895646148] [2023-11-19 05:13:27,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:27,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-19 05:13:27,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895646148] [2023-11-19 05:13:27,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895646148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:27,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:27,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:13:27,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573088495] [2023-11-19 05:13:27,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:27,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:27,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:27,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:27,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:27,667 INFO L87 Difference]: Start difference. First operand 16372 states and 23108 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 05:13:30,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:30,279 INFO L93 Difference]: Finished difference Result 47434 states and 66775 transitions. [2023-11-19 05:13:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:30,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 794 [2023-11-19 05:13:30,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:30,448 INFO L225 Difference]: With dead ends: 47434 [2023-11-19 05:13:30,449 INFO L226 Difference]: Without dead ends: 31211 [2023-11-19 05:13:30,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:30,517 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 1378 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:30,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 3292 Invalid, 411 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:13:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31211 states. [2023-11-19 05:13:33,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31211 to 31192. [2023-11-19 05:13:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31192 states, 19081 states have (on average 1.3147109690267806) internal successors, (25086), 19438 states have internal predecessors, (25086), 9352 states have call successors, (9352), 2757 states have call predecessors, (9352), 2756 states have return successors, (9348), 9193 states have call predecessors, (9348), 9348 states have call successors, (9348) [2023-11-19 05:13:33,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31192 states to 31192 states and 43786 transitions. [2023-11-19 05:13:33,592 INFO L78 Accepts]: Start accepts. Automaton has 31192 states and 43786 transitions. Word has length 794 [2023-11-19 05:13:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:33,594 INFO L495 AbstractCegarLoop]: Abstraction has 31192 states and 43786 transitions. [2023-11-19 05:13:33,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 05:13:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 31192 states and 43786 transitions. [2023-11-19 05:13:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2023-11-19 05:13:33,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:33,606 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:33,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:13:33,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:13:33,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:33,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1895769949, now seen corresponding path program 1 times [2023-11-19 05:13:33,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:33,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292791846] [2023-11-19 05:13:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:33,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-19 05:13:34,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:34,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292791846] [2023-11-19 05:13:34,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292791846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:34,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:34,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:13:34,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405614365] [2023-11-19 05:13:34,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:34,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:34,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:34,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:34,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:34,320 INFO L87 Difference]: Start difference. First operand 31192 states and 43786 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 05:13:37,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:37,646 INFO L93 Difference]: Finished difference Result 91234 states and 127779 transitions. [2023-11-19 05:13:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:37,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 792 [2023-11-19 05:13:37,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:38,035 INFO L225 Difference]: With dead ends: 91234 [2023-11-19 05:13:38,036 INFO L226 Difference]: Without dead ends: 60191 [2023-11-19 05:13:38,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:38,153 INFO L413 NwaCegarLoop]: 1867 mSDtfsCounter, 1380 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 3359 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:38,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 3359 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:13:38,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60191 states. [2023-11-19 05:13:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60191 to 60172. [2023-11-19 05:13:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60172 states, 36864 states have (on average 1.3123372395833333) internal successors, (48378), 37573 states have internal predecessors, (48378), 17829 states have call successors, (17829), 5477 states have call predecessors, (17829), 5476 states have return successors, (17825), 17510 states have call predecessors, (17825), 17825 states have call successors, (17825) [2023-11-19 05:13:42,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60172 states to 60172 states and 84032 transitions. [2023-11-19 05:13:42,358 INFO L78 Accepts]: Start accepts. Automaton has 60172 states and 84032 transitions. Word has length 792 [2023-11-19 05:13:42,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:42,359 INFO L495 AbstractCegarLoop]: Abstraction has 60172 states and 84032 transitions. [2023-11-19 05:13:42,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 05:13:42,360 INFO L276 IsEmpty]: Start isEmpty. Operand 60172 states and 84032 transitions. [2023-11-19 05:13:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-11-19 05:13:42,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:42,371 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 74, 74, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:42,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:13:42,372 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 05:13:42,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:42,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1636370516, now seen corresponding path program 1 times [2023-11-19 05:13:42,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:13:42,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035286326] [2023-11-19 05:13:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:42,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:13:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-19 05:13:42,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:13:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035286326] [2023-11-19 05:13:42,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035286326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:42,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:42,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:13:42,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912897543] [2023-11-19 05:13:42,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:42,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:42,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:13:42,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:42,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:42,933 INFO L87 Difference]: Start difference. First operand 60172 states and 84032 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81)