./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/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_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-25 00:02:34,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:02:34,767 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:02:34,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:02:34,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:02:34,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:02:34,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:02:34,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:02:34,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:02:34,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:02:34,841 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:02:34,841 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:02:34,842 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:02:34,844 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:02:34,845 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:02:34,845 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:02:34,846 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:02:34,846 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:02:34,847 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:02:34,847 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:02:34,848 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:02:34,849 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:02:34,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:02:34,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:02:34,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:02:34,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:02:34,852 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:02:34,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:02:34,853 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:02:34,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:02:34,855 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:02:34,855 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:02:34,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:02:34,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:02:34,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:34,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:02:34,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:02:34,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:02:34,858 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:02:34,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:02:34,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:02:34,859 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:02:34,859 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:02:34,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:02:34,860 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_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a59a3596571aa79fb44a527a9b6a33b40c9acdae164ed96a4388ebcdf2e0df [2023-11-25 00:02:35,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:02:35,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:02:35,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:02:35,184 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:02:35,184 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:02:35,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2023-11-25 00:02:38,420 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:02:39,144 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:02:39,145 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2023-11-25 00:02:39,196 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/data/4bd6a8daa/8dbed6fa6af64f05891ad79fbf87fa5c/FLAGb1d69f22b [2023-11-25 00:02:39,213 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/data/4bd6a8daa/8dbed6fa6af64f05891ad79fbf87fa5c [2023-11-25 00:02:39,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:02:39,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:02:39,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:39,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:02:39,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:02:39,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:39" (1/1) ... [2023-11-25 00:02:39,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5849f027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:39, skipping insertion in model container [2023-11-25 00:02:39,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:39" (1/1) ... [2023-11-25 00:02:39,369 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:02:41,620 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_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2023-11-25 00:02:41,625 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_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2023-11-25 00:02:41,627 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_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2023-11-25 00:02:41,628 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_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2023-11-25 00:02:41,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:41,704 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:02:41,900 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5224] [2023-11-25 00:02:41,906 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5227] [2023-11-25 00:02:41,907 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5230] [2023-11-25 00:02:41,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5233] [2023-11-25 00:02:41,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5264] [2023-11-25 00:02:41,915 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5267] [2023-11-25 00:02:41,915 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5270] [2023-11-25 00:02:41,916 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5273] [2023-11-25 00:02:41,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5304] [2023-11-25 00:02:41,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5307] [2023-11-25 00:02:41,918 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5310] [2023-11-25 00:02:41,918 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5313] [2023-11-25 00:02:41,923 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decb %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5344] [2023-11-25 00:02:41,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decw %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5347] [2023-11-25 00:02:41,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decl %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5350] [2023-11-25 00:02:41,925 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("decq %%gs:%P0": "+m" (*(dev->pcpu_refcnt))); [5353] [2023-11-25 00:02:42,174 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_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311030,311043] [2023-11-25 00:02:42,175 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_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311196,311209] [2023-11-25 00:02:42,176 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_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311360,311373] [2023-11-25 00:02:42,177 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_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i[311525,311538] [2023-11-25 00:02:42,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:42,342 WARN L675 CHandler]: The function __bad_size_call_parameter is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:42,342 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:42,351 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:02:42,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42 WrapperNode [2023-11-25 00:02:42,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:42,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:42,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:02:42,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:02:42,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42" (1/1) ... [2023-11-25 00:02:42,471 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42" (1/1) ... [2023-11-25 00:02:42,625 INFO L138 Inliner]: procedures = 289, calls = 1055, calls flagged for inlining = 163, calls inlined = 153, statements flattened = 3439 [2023-11-25 00:02:42,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:42,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:02:42,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:02:42,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:02:42,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42" (1/1) ... [2023-11-25 00:02:42,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42" (1/1) ... [2023-11-25 00:02:42,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42" (1/1) ... [2023-11-25 00:02:42,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42" (1/1) ... [2023-11-25 00:02:42,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42" (1/1) ... [2023-11-25 00:02:42,830 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42" (1/1) ... [2023-11-25 00:02:42,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42" (1/1) ... [2023-11-25 00:02:42,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42" (1/1) ... [2023-11-25 00:02:42,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:02:42,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:02:42,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:02:42,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:02:42,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42" (1/1) ... [2023-11-25 00:02:42,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:42,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:42,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:02:42,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb1d2e7-7a92-4a50-ada9-1df687de44a7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:02:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure show_enabled [2023-11-25 00:02:43,014 INFO L138 BoogieDeclarations]: Found implementation of procedure show_enabled [2023-11-25 00:02:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdevice_notifier [2023-11-25 00:02:43,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdevice_notifier [2023-11-25 00:02:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-25 00:02:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-25 00:02:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-25 00:02:43,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-25 00:02:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-25 00:02:43,015 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-25 00:02:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_mac [2023-11-25 00:02:43,016 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_mac [2023-11-25 00:02:43,016 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_put [2023-11-25 00:02:43,016 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_put [2023-11-25 00:02:43,016 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_ip [2023-11-25 00:02:43,016 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_ip [2023-11-25 00:02:43,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-25 00:02:43,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-25 00:02:43,017 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2023-11-25 00:02:43,017 INFO L130 BoogieDeclarations]: Found specification of procedure show_dev_name [2023-11-25 00:02:43,017 INFO L138 BoogieDeclarations]: Found implementation of procedure show_dev_name [2023-11-25 00:02:43,017 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice_notifier [2023-11-25 00:02:43,018 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice_notifier [2023-11-25 00:02:43,018 INFO L130 BoogieDeclarations]: Found specification of procedure drop_netconsole_target [2023-11-25 00:02:43,018 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_netconsole_target [2023-11-25 00:02:43,018 INFO L130 BoogieDeclarations]: Found specification of procedure free_param_target [2023-11-25 00:02:43,018 INFO L138 BoogieDeclarations]: Found implementation of procedure free_param_target [2023-11-25 00:02:43,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:02:43,019 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:02:43,019 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_get [2023-11-25 00:02:43,019 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_get [2023-11-25 00:02:43,019 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_mac [2023-11-25 00:02:43,019 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_mac [2023-11-25 00:02:43,020 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_ip [2023-11-25 00:02:43,020 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_ip [2023-11-25 00:02:43,020 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-25 00:02:43,020 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-25 00:02:43,020 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-11-25 00:02:43,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-11-25 00:02:43,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_netconsole_target [2023-11-25 00:02:43,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_netconsole_target [2023-11-25 00:02:43,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:02:43,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:02:43,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-25 00:02:43,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-25 00:02:43,022 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-25 00:02:43,022 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-25 00:02:43,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-25 00:02:43,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-25 00:02:43,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2023-11-25 00:02:43,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2023-11-25 00:02:43,023 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-25 00:02:43,023 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-25 00:02:43,023 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_release [2023-11-25 00:02:43,023 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_release [2023-11-25 00:02:43,024 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_show [2023-11-25 00:02:43,024 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_show [2023-11-25 00:02:43,024 INFO L130 BoogieDeclarations]: Found specification of procedure make_netconsole_target [2023-11-25 00:02:43,024 INFO L138 BoogieDeclarations]: Found implementation of procedure make_netconsole_target [2023-11-25 00:02:43,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:02:43,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:02:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_cleanup [2023-11-25 00:02:43,025 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_cleanup [2023-11-25 00:02:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-25 00:02:43,025 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-25 00:02:43,025 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_setup [2023-11-25 00:02:43,025 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_setup [2023-11-25 00:02:43,026 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-25 00:02:43,026 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-25 00:02:43,026 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-25 00:02:43,026 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-25 00:02:43,026 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-25 00:02:43,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-25 00:02:43,027 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-25 00:02:43,027 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-25 00:02:43,027 INFO L130 BoogieDeclarations]: Found specification of procedure store_remote_port [2023-11-25 00:02:43,027 INFO L138 BoogieDeclarations]: Found implementation of procedure store_remote_port [2023-11-25 00:02:43,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-25 00:02:43,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-25 00:02:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure strnchr [2023-11-25 00:02:43,028 INFO L138 BoogieDeclarations]: Found implementation of procedure strnchr [2023-11-25 00:02:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtou16 [2023-11-25 00:02:43,028 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtou16 [2023-11-25 00:02:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-25 00:02:43,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-25 00:02:43,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-25 00:02:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-25 00:02:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-25 00:02:43,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-25 00:02:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:02:43,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-11-25 00:02:43,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-11-25 00:02:43,030 INFO L130 BoogieDeclarations]: Found specification of procedure store_enabled [2023-11-25 00:02:43,030 INFO L138 BoogieDeclarations]: Found implementation of procedure store_enabled [2023-11-25 00:02:43,030 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_ip [2023-11-25 00:02:43,030 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_ip [2023-11-25 00:02:43,030 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2023-11-25 00:02:43,031 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2023-11-25 00:02:43,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2023-11-25 00:02:43,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cleanup_netconsole_14_2 [2023-11-25 00:02:43,031 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-25 00:02:43,031 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-25 00:02:43,031 INFO L130 BoogieDeclarations]: Found specification of procedure to_target [2023-11-25 00:02:43,032 INFO L138 BoogieDeclarations]: Found implementation of procedure to_target [2023-11-25 00:02:43,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-11-25 00:02:43,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-11-25 00:02:43,032 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_put [2023-11-25 00:02:43,032 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_put [2023-11-25 00:02:43,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:02:43,033 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_mac [2023-11-25 00:02:43,033 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_mac [2023-11-25 00:02:43,033 INFO L130 BoogieDeclarations]: Found specification of procedure in6_pton [2023-11-25 00:02:43,033 INFO L138 BoogieDeclarations]: Found implementation of procedure in6_pton [2023-11-25 00:02:43,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:02:43,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-25 00:02:43,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-25 00:02:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:02:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-25 00:02:43,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-25 00:02:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:02:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-25 00:02:43,035 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_ip [2023-11-25 00:02:43,035 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_ip [2023-11-25 00:02:43,035 INFO L130 BoogieDeclarations]: Found specification of procedure in_aton [2023-11-25 00:02:43,035 INFO L138 BoogieDeclarations]: Found implementation of procedure in_aton [2023-11-25 00:02:43,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-25 00:02:43,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-25 00:02:43,036 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-25 00:02:43,036 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-25 00:02:43,036 INFO L130 BoogieDeclarations]: Found specification of procedure store_dev_name [2023-11-25 00:02:43,036 INFO L138 BoogieDeclarations]: Found implementation of procedure store_dev_name [2023-11-25 00:02:43,036 INFO L130 BoogieDeclarations]: Found specification of procedure show_remote_port [2023-11-25 00:02:43,037 INFO L138 BoogieDeclarations]: Found implementation of procedure show_remote_port [2023-11-25 00:02:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure netconsole_target_attr_store [2023-11-25 00:02:43,037 INFO L138 BoogieDeclarations]: Found implementation of procedure netconsole_target_attr_store [2023-11-25 00:02:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:02:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure store_local_port [2023-11-25 00:02:43,037 INFO L138 BoogieDeclarations]: Found implementation of procedure store_local_port [2023-11-25 00:02:43,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-25 00:02:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-25 00:02:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure config_item_name [2023-11-25 00:02:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure config_item_name [2023-11-25 00:02:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure show_local_port [2023-11-25 00:02:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure show_local_port [2023-11-25 00:02:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:02:43,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:02:43,876 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:02:43,882 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:02:44,116 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-25 00:02:46,499 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-25 00:02:46,660 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:02:47,347 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:02:47,348 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-25 00:02:47,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:47 BoogieIcfgContainer [2023-11-25 00:02:47,351 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:02:47,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:02:47,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:02:47,360 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:02:47,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:02:39" (1/3) ... [2023-11-25 00:02:47,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5b03a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:47, skipping insertion in model container [2023-11-25 00:02:47,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:42" (2/3) ... [2023-11-25 00:02:47,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5b03a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:47, skipping insertion in model container [2023-11-25 00:02:47,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:47" (3/3) ... [2023-11-25 00:02:47,365 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-netconsole.cil.i [2023-11-25 00:02:47,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:02:47,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-25 00:02:47,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:02:47,511 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;@e76a4bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:02:47,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-25 00:02:47,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 1168 states, 697 states have (on average 1.3084648493543758) internal successors, (912), 706 states have internal predecessors, (912), 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) [2023-11-25 00:02:47,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2023-11-25 00:02:47,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:47,611 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] [2023-11-25 00:02:47,612 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)] === [2023-11-25 00:02:47,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:47,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1281815354, now seen corresponding path program 1 times [2023-11-25 00:02:47,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:47,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859984091] [2023-11-25 00:02:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:47,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21756 trivial. 0 not checked. [2023-11-25 00:02:49,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:49,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859984091] [2023-11-25 00:02:49,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859984091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:49,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:49,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:49,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121223704] [2023-11-25 00:02:49,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:49,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:49,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:49,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:49,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:49,716 INFO L87 Difference]: Start difference. First operand has 1168 states, 697 states have (on average 1.3084648493543758) internal successors, (912), 706 states have internal predecessors, (912), 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) [2023-11-25 00:02:50,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:50,691 INFO L93 Difference]: Finished difference Result 3077 states and 4546 transitions. [2023-11-25 00:02:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:50,694 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 [2023-11-25 00:02:50,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:50,728 INFO L225 Difference]: With dead ends: 3077 [2023-11-25 00:02:50,729 INFO L226 Difference]: Without dead ends: 2049 [2023-11-25 00:02:50,742 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 [2023-11-25 00:02:50,746 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 1409 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:50,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1409 Valid, 2984 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:02:50,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2023-11-25 00:02:50,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2045. [2023-11-25 00:02:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 1246 states have (on average 1.3202247191011236) internal successors, (1645), 1262 states have internal predecessors, (1645), 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) [2023-11-25 00:02:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2991 transitions. [2023-11-25 00:02:51,031 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2991 transitions. Word has length 761 [2023-11-25 00:02:51,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:51,035 INFO L495 AbstractCegarLoop]: Abstraction has 2045 states and 2991 transitions. [2023-11-25 00:02:51,035 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) [2023-11-25 00:02:51,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2991 transitions. [2023-11-25 00:02:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2023-11-25 00:02:51,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:51,075 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] [2023-11-25 00:02:51,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:02:51,076 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)] === [2023-11-25 00:02:51,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1155943843, now seen corresponding path program 1 times [2023-11-25 00:02:51,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:51,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862663530] [2023-11-25 00:02:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:51,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-25 00:02:52,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:52,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862663530] [2023-11-25 00:02:52,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862663530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:52,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:52,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:52,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584807434] [2023-11-25 00:02:52,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:52,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:52,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:52,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:52,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:52,068 INFO L87 Difference]: Start difference. First operand 2045 states and 2991 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) [2023-11-25 00:02:52,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:52,984 INFO L93 Difference]: Finished difference Result 4936 states and 7162 transitions. [2023-11-25 00:02:52,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:52,985 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 [2023-11-25 00:02:52,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:53,027 INFO L225 Difference]: With dead ends: 4936 [2023-11-25 00:02:53,027 INFO L226 Difference]: Without dead ends: 3040 [2023-11-25 00:02:53,046 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 [2023-11-25 00:02:53,049 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1386 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:53,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 3030 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-25 00:02:53,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2023-11-25 00:02:53,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 3021. [2023-11-25 00:02:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3021 states, 1843 states have (on average 1.3190450352685839) internal successors, (2431), 1870 states have internal predecessors, (2431), 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) [2023-11-25 00:02:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3021 states to 3021 states and 4365 transitions. [2023-11-25 00:02:53,324 INFO L78 Accepts]: Start accepts. Automaton has 3021 states and 4365 transitions. Word has length 789 [2023-11-25 00:02:53,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:53,326 INFO L495 AbstractCegarLoop]: Abstraction has 3021 states and 4365 transitions. [2023-11-25 00:02:53,327 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) [2023-11-25 00:02:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3021 states and 4365 transitions. [2023-11-25 00:02:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2023-11-25 00:02:53,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:53,342 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] [2023-11-25 00:02:53,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:02:53,342 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)] === [2023-11-25 00:02:53,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1125446798, now seen corresponding path program 1 times [2023-11-25 00:02:53,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:53,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905432187] [2023-11-25 00:02:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:53,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-25 00:02:54,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:54,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905432187] [2023-11-25 00:02:54,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905432187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:54,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:54,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:54,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262552513] [2023-11-25 00:02:54,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:54,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:54,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:54,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:54,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:54,053 INFO L87 Difference]: Start difference. First operand 3021 states and 4365 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) [2023-11-25 00:02:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:55,170 INFO L93 Difference]: Finished difference Result 7864 states and 11289 transitions. [2023-11-25 00:02:55,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:55,172 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 [2023-11-25 00:02:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:55,230 INFO L225 Difference]: With dead ends: 7864 [2023-11-25 00:02:55,231 INFO L226 Difference]: Without dead ends: 4992 [2023-11-25 00:02:55,251 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 [2023-11-25 00:02:55,257 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 1387 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:55,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 3062 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-25 00:02:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2023-11-25 00:02:55,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 4973. [2023-11-25 00:02:55,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4973 states, 3037 states have (on average 1.3180770497201186) internal successors, (4003), 3086 states have internal predecessors, (4003), 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) [2023-11-25 00:02:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4973 states to 4973 states and 7113 transitions. [2023-11-25 00:02:55,729 INFO L78 Accepts]: Start accepts. Automaton has 4973 states and 7113 transitions. Word has length 788 [2023-11-25 00:02:55,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:55,731 INFO L495 AbstractCegarLoop]: Abstraction has 4973 states and 7113 transitions. [2023-11-25 00:02:55,732 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) [2023-11-25 00:02:55,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4973 states and 7113 transitions. [2023-11-25 00:02:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2023-11-25 00:02:55,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:55,752 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] [2023-11-25 00:02:55,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:02:55,752 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)] === [2023-11-25 00:02:55,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:55,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1699446398, now seen corresponding path program 1 times [2023-11-25 00:02:55,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:55,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756280563] [2023-11-25 00:02:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:55,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-25 00:02:56,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:56,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756280563] [2023-11-25 00:02:56,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756280563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:56,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:56,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:56,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909050639] [2023-11-25 00:02:56,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:56,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:56,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:56,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:56,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:56,368 INFO L87 Difference]: Start difference. First operand 4973 states and 7113 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) [2023-11-25 00:02:57,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:57,542 INFO L93 Difference]: Finished difference Result 13676 states and 19469 transitions. [2023-11-25 00:02:57,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:57,543 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 [2023-11-25 00:02:57,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:57,624 INFO L225 Difference]: With dead ends: 13676 [2023-11-25 00:02:57,624 INFO L226 Difference]: Without dead ends: 8852 [2023-11-25 00:02:57,656 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 [2023-11-25 00:02:57,659 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1384 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:57,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 3164 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:02:57,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8852 states. [2023-11-25 00:02:58,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8852 to 8833. [2023-11-25 00:02:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8833 states, 5400 states have (on average 1.316851851851852) internal successors, (7111), 5493 states have internal predecessors, (7111), 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) [2023-11-25 00:02:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8833 states to 8833 states and 12535 transitions. [2023-11-25 00:02:58,387 INFO L78 Accepts]: Start accepts. Automaton has 8833 states and 12535 transitions. Word has length 791 [2023-11-25 00:02:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:58,389 INFO L495 AbstractCegarLoop]: Abstraction has 8833 states and 12535 transitions. [2023-11-25 00:02:58,390 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) [2023-11-25 00:02:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 8833 states and 12535 transitions. [2023-11-25 00:02:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2023-11-25 00:02:58,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:58,472 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] [2023-11-25 00:02:58,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:02:58,473 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)] === [2023-11-25 00:02:58,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:58,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1630670276, now seen corresponding path program 1 times [2023-11-25 00:02:58,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:58,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435972157] [2023-11-25 00:02:58,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:58,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:59,048 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-25 00:02:59,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:59,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435972157] [2023-11-25 00:02:59,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435972157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:59,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:59,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:59,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949463863] [2023-11-25 00:02:59,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:59,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:59,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:59,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:59,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:59,053 INFO L87 Difference]: Start difference. First operand 8833 states and 12535 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) [2023-11-25 00:03:00,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:00,430 INFO L93 Difference]: Finished difference Result 25124 states and 35533 transitions. [2023-11-25 00:03:00,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:03:00,431 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 [2023-11-25 00:03:00,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:00,571 INFO L225 Difference]: With dead ends: 25124 [2023-11-25 00:03:00,571 INFO L226 Difference]: Without dead ends: 16440 [2023-11-25 00:03:00,614 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 [2023-11-25 00:03:00,614 INFO L413 NwaCegarLoop]: 1734 mSDtfsCounter, 1385 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:00,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 3229 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:03:00,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16440 states. [2023-11-25 00:03:01,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16440 to 16421. [2023-11-25 00:03:01,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16421 states, 10051 states have (on average 1.3151925181573974) internal successors, (13219), 10232 states have internal predecessors, (13219), 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) [2023-11-25 00:03:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16421 states to 16421 states and 23157 transitions. [2023-11-25 00:03:02,117 INFO L78 Accepts]: Start accepts. Automaton has 16421 states and 23157 transitions. Word has length 790 [2023-11-25 00:03:02,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:02,119 INFO L495 AbstractCegarLoop]: Abstraction has 16421 states and 23157 transitions. [2023-11-25 00:03:02,119 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) [2023-11-25 00:03:02,119 INFO L276 IsEmpty]: Start isEmpty. Operand 16421 states and 23157 transitions. [2023-11-25 00:03:02,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2023-11-25 00:03:02,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:02,139 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] [2023-11-25 00:03:02,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-25 00:03:02,139 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)] === [2023-11-25 00:03:02,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:02,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1526955911, now seen corresponding path program 1 times [2023-11-25 00:03:02,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:02,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679131596] [2023-11-25 00:03:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:02,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-25 00:03:02,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:02,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679131596] [2023-11-25 00:03:02,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679131596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:02,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:02,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:02,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900412359] [2023-11-25 00:03:02,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:02,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:03:02,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:02,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:03:02,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:02,711 INFO L87 Difference]: Start difference. First operand 16421 states and 23157 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) [2023-11-25 00:03:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:04,778 INFO L93 Difference]: Finished difference Result 47580 states and 66921 transitions. [2023-11-25 00:03:04,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:03:04,779 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 [2023-11-25 00:03:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:04,970 INFO L225 Difference]: With dead ends: 47580 [2023-11-25 00:03:04,970 INFO L226 Difference]: Without dead ends: 31308 [2023-11-25 00:03:05,042 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 [2023-11-25 00:03:05,043 INFO L413 NwaCegarLoop]: 1803 mSDtfsCounter, 1383 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:05,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 3298 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-25 00:03:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31308 states. [2023-11-25 00:03:07,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31308 to 31289. [2023-11-25 00:03:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31289 states, 19178 states have (on average 1.3131191990822817) internal successors, (25183), 19535 states have internal predecessors, (25183), 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) [2023-11-25 00:03:07,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31289 states to 31289 states and 43883 transitions. [2023-11-25 00:03:07,658 INFO L78 Accepts]: Start accepts. Automaton has 31289 states and 43883 transitions. Word has length 792 [2023-11-25 00:03:07,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:07,660 INFO L495 AbstractCegarLoop]: Abstraction has 31289 states and 43883 transitions. [2023-11-25 00:03:07,660 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) [2023-11-25 00:03:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 31289 states and 43883 transitions. [2023-11-25 00:03:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2023-11-25 00:03:07,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:07,679 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] [2023-11-25 00:03:07,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-25 00:03:07,679 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)] === [2023-11-25 00:03:07,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:07,680 INFO L85 PathProgramCache]: Analyzing trace with hash -867705004, now seen corresponding path program 1 times [2023-11-25 00:03:07,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:07,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160698287] [2023-11-25 00:03:07,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:07,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-25 00:03:08,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:08,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160698287] [2023-11-25 00:03:08,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160698287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:08,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:08,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:08,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766436726] [2023-11-25 00:03:08,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:08,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:03:08,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:08,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:03:08,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:08,394 INFO L87 Difference]: Start difference. First operand 31289 states and 43883 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) [2023-11-25 00:03:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:11,725 INFO L93 Difference]: Finished difference Result 91524 states and 128069 transitions. [2023-11-25 00:03:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:03:11,728 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 [2023-11-25 00:03:11,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:12,089 INFO L225 Difference]: With dead ends: 91524 [2023-11-25 00:03:12,089 INFO L226 Difference]: Without dead ends: 60384 [2023-11-25 00:03:12,201 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 [2023-11-25 00:03:12,202 INFO L413 NwaCegarLoop]: 1870 mSDtfsCounter, 1381 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 3365 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 [2023-11-25 00:03:12,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 3365 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:03:12,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60384 states. [2023-11-25 00:03:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60384 to 60365. [2023-11-25 00:03:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60365 states, 37057 states have (on average 1.310710527025933) internal successors, (48571), 37766 states have internal predecessors, (48571), 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) [2023-11-25 00:03:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60365 states to 60365 states and 84225 transitions. [2023-11-25 00:03:16,404 INFO L78 Accepts]: Start accepts. Automaton has 60365 states and 84225 transitions. Word has length 794 [2023-11-25 00:03:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:16,406 INFO L495 AbstractCegarLoop]: Abstraction has 60365 states and 84225 transitions. [2023-11-25 00:03:16,406 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) [2023-11-25 00:03:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 60365 states and 84225 transitions. [2023-11-25 00:03:16,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-11-25 00:03:16,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:16,418 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] [2023-11-25 00:03:16,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-25 00:03:16,418 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)] === [2023-11-25 00:03:16,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:16,419 INFO L85 PathProgramCache]: Analyzing trace with hash 163480628, now seen corresponding path program 1 times [2023-11-25 00:03:16,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:16,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740889872] [2023-11-25 00:03:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:16,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21759 trivial. 0 not checked. [2023-11-25 00:03:16,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:16,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740889872] [2023-11-25 00:03:16,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740889872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:16,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:16,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:16,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202757442] [2023-11-25 00:03:16,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:16,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:03:16,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:16,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:03:16,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:16,907 INFO L87 Difference]: Start difference. First operand 60365 states and 84225 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)