./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-media-usb-stk1160-stk1160.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-stk1160-stk1160.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh --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 193fa6b4f086a396d067fbfddb452d772bc0bf74300960c03103aae93493f0ae --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:06:38,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:06:38,489 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 14:06:38,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:06:38,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:06:38,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:06:38,519 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:06:38,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:06:38,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:06:38,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:06:38,521 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:06:38,522 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:06:38,522 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:06:38,523 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:06:38,523 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:06:38,524 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:06:38,524 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:06:38,525 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:06:38,525 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:06:38,526 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:06:38,526 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:06:38,527 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:06:38,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:06:38,528 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:06:38,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:06:38,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:06:38,530 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:06:38,530 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:06:38,530 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:06:38,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:06:38,531 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:06:38,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:06:38,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:06:38,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:06:38,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:06:38,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:06:38,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:06:38,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:06:38,533 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:06:38,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:06:38,534 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:06:38,534 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:06:38,534 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:06:38,534 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:06:38,535 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_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 193fa6b4f086a396d067fbfddb452d772bc0bf74300960c03103aae93493f0ae [2023-12-02 14:06:38,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:06:38,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:06:38,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:06:38,777 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:06:38,777 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:06:38,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-stk1160-stk1160.cil.i [2023-12-02 14:06:41,504 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:06:41,993 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:06:41,993 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-stk1160-stk1160.cil.i [2023-12-02 14:06:42,034 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/data/518a4b0bb/e4d121a4aaba4a35a81413d24cc5b9c8/FLAGe9e7f6ad6 [2023-12-02 14:06:42,046 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/data/518a4b0bb/e4d121a4aaba4a35a81413d24cc5b9c8 [2023-12-02 14:06:42,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:06:42,050 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:06:42,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:06:42,051 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:06:42,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:06:42,056 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:06:42" (1/1) ... [2023-12-02 14:06:42,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15620840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:42, skipping insertion in model container [2023-12-02 14:06:42,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:06:42" (1/1) ... [2023-12-02 14:06:42,184 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:06:44,605 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_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-stk1160-stk1160.cil.i[377234,377247] [2023-12-02 14:06:44,610 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_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-stk1160-stk1160.cil.i[377400,377413] [2023-12-02 14:06:44,610 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_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-stk1160-stk1160.cil.i[377564,377577] [2023-12-02 14:06:44,611 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_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-stk1160-stk1160.cil.i[377729,377742] [2023-12-02 14:06:44,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:06:44,704 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:06:44,927 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [7955] [2023-12-02 14:06:45,277 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_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-stk1160-stk1160.cil.i[377234,377247] [2023-12-02 14:06:45,277 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_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-stk1160-stk1160.cil.i[377400,377413] [2023-12-02 14:06:45,278 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_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-stk1160-stk1160.cil.i[377564,377577] [2023-12-02 14:06:45,279 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_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-stk1160-stk1160.cil.i[377729,377742] [2023-12-02 14:06:45,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:06:45,476 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:06:45,477 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:06:45,487 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:06:45,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45 WrapperNode [2023-12-02 14:06:45,487 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:06:45,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:06:45,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:06:45,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:06:45,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45" (1/1) ... [2023-12-02 14:06:45,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45" (1/1) ... [2023-12-02 14:06:47,168 INFO L138 Inliner]: procedures = 377, calls = 5871, calls flagged for inlining = 220, calls inlined = 198, statements flattened = 11350 [2023-12-02 14:06:47,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:06:47,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:06:47,171 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:06:47,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:06:47,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45" (1/1) ... [2023-12-02 14:06:47,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45" (1/1) ... [2023-12-02 14:06:48,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45" (1/1) ... [2023-12-02 14:06:48,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45" (1/1) ... [2023-12-02 14:06:49,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45" (1/1) ... [2023-12-02 14:06:49,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45" (1/1) ... [2023-12-02 14:06:49,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45" (1/1) ... [2023-12-02 14:06:49,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45" (1/1) ... [2023-12-02 14:06:50,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:06:50,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:06:50,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:06:50,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:06:50,017 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45" (1/1) ... [2023-12-02 14:06:50,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:06:50,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:06:50,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:06:50,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_152e8f39-bbdb-4b7b-9276-04bb3d5d80ac/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:06:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 14:06:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 14:06:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_reset_ac97 [2023-12-02 14:06:50,086 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_reset_ac97 [2023-12-02 14:06:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-12-02 14:06:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-12-02 14:06:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_ops_wait_finish [2023-12-02 14:06:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_ops_wait_finish [2023-12-02 14:06:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_poll [2023-12-02 14:06:50,087 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_fop_poll [2023-12-02 14:06:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 14:06:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 14:06:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-12-02 14:06:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-12-02 14:06:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-12-02 14:06:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-12-02 14:06:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_mmap [2023-12-02 14:06:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_fop_mmap [2023-12-02 14:06:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure start_streaming [2023-12-02 14:06:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure start_streaming [2023-12-02 14:06:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 14:06:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 14:06:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_v4l_lock_of_stk1160 [2023-12-02 14:06:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_v4l_lock_of_stk1160 [2023-12-02 14:06:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_is_busy [2023-12-02 14:06:50,091 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_is_busy [2023-12-02 14:06:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_clear_queue [2023-12-02 14:06:50,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_clear_queue [2023-12-02 14:06:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_cancel_isoc [2023-12-02 14:06:50,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_cancel_isoc [2023-12-02 14:06:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_device_unregister [2023-12-02 14:06:50,092 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_device_unregister [2023-12-02 14:06:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 14:06:50,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 14:06:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_select_input [2023-12-02 14:06:50,093 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_select_input [2023-12-02 14:06:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-12-02 14:06:50,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-12-02 14:06:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-12-02 14:06:50,093 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-12-02 14:06:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2023-12-02 14:06:50,094 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2023-12-02 14:06:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:06:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-12-02 14:06:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_free_isoc [2023-12-02 14:06:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_free_isoc [2023-12-02 14:06:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_v4l_lock_of_stk1160 [2023-12-02 14:06:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_v4l_lock_of_stk1160 [2023-12-02 14:06:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:06:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-12-02 14:06:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-12-02 14:06:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2023-12-02 14:06:50,096 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2023-12-02 14:06:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-12-02 14:06:50,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-12-02 14:06:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2023-12-02 14:06:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2023-12-02 14:06:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-12-02 14:06:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-12-02 14:06:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:06:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 14:06:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 14:06:50,098 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 14:06:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_write_reg [2023-12-02 14:06:50,098 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_write_reg [2023-12-02 14:06:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-12-02 14:06:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-12-02 14:06:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-12-02 14:06:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-12-02 14:06:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-02 14:06:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-02 14:06:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-12-02 14:06:50,100 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-12-02 14:06:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_vb_queue_lock_of_stk1160 [2023-12-02 14:06:50,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_vb_queue_lock_of_stk1160 [2023-12-02 14:06:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure stop_streaming [2023-12-02 14:06:50,100 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_streaming [2023-12-02 14:06:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_i2c_busy_wait [2023-12-02 14:06:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_i2c_busy_wait [2023-12-02 14:06:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-12-02 14:06:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-12-02 14:06:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-12-02 14:06:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-12-02 14:06:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2023-12-02 14:06:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2023-12-02 14:06:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2023-12-02 14:06:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2023-12-02 14:06:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_probe [2023-12-02 14:06:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_probe [2023-12-02 14:06:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 14:06:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 14:06:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_buffer_done [2023-12-02 14:06:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_buffer_done [2023-12-02 14:06:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2023-12-02 14:06:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2023-12-02 14:06:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_ops_wait_prepare [2023-12-02 14:06:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_ops_wait_prepare [2023-12-02 14:06:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release_empty [2023-12-02 14:06:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release_empty [2023-12-02 14:06:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-12-02 14:06:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-12-02 14:06:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 14:06:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-12-02 14:06:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-12-02 14:06:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-12-02 14:06:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-12-02 14:06:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:06:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-12-02 14:06:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-12-02 14:06:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2023-12-02 14:06:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2023-12-02 14:06:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-12-02 14:06:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-12-02 14:06:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_read_reg [2023-12-02 14:06:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_read_reg [2023-12-02 14:06:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-12-02 14:06:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-12-02 14:06:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_v4l_lock_of_stk1160 [2023-12-02 14:06:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_v4l_lock_of_stk1160 [2023-12-02 14:06:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-12-02 14:06:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-12-02 14:06:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-12-02 14:06:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-12-02 14:06:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_fh_open [2023-12-02 14:06:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_fh_open [2023-12-02 14:06:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:06:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2023-12-02 14:06:50,108 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2023-12-02 14:06:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_set_std [2023-12-02 14:06:50,108 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_set_std [2023-12-02 14:06:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_stk1160_usb_driver_exit_7_2 [2023-12-02 14:06:50,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_stk1160_usb_driver_exit_7_2 [2023-12-02 14:06:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:06:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-12-02 14:06:50,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-12-02 14:06:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2023-12-02 14:06:50,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2023-12-02 14:06:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:06:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_start_streaming [2023-12-02 14:06:50,109 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_start_streaming [2023-12-02 14:06:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_i2c_unregister [2023-12-02 14:06:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_i2c_unregister [2023-12-02 14:06:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-12-02 14:06:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-12-02 14:06:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:06:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_uninit_isoc [2023-12-02 14:06:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_uninit_isoc [2023-12-02 14:06:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_drv_priv [2023-12-02 14:06:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_drv_priv [2023-12-02 14:06:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-12-02 14:06:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-12-02 14:06:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-12-02 14:06:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-12-02 14:06:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_queue [2023-12-02 14:06:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_queue [2023-12-02 14:06:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_log_status [2023-12-02 14:06:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_log_status [2023-12-02 14:06:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-12-02 14:06:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-12-02 14:06:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-12-02 14:06:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-12-02 14:06:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_free [2023-12-02 14:06:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_free [2023-12-02 14:06:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_release [2023-12-02 14:06:50,113 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_fop_release [2023-12-02 14:06:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2023-12-02 14:06:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2023-12-02 14:06:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-12-02 14:06:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-12-02 14:06:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:06:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure stk1160_disconnect [2023-12-02 14:06:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure stk1160_disconnect [2023-12-02 14:06:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-12-02 14:06:50,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-12-02 14:06:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-12-02 14:06:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:06:50,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:06:51,169 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:06:51,173 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:06:51,813 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 14:07:21,674 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-12-02 14:07:21,812 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:07:23,665 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:07:23,665 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-02 14:07:23,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:07:23 BoogieIcfgContainer [2023-12-02 14:07:23,667 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:07:23,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:07:23,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:07:23,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:07:23,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:06:42" (1/3) ... [2023-12-02 14:07:23,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f8d5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:07:23, skipping insertion in model container [2023-12-02 14:07:23,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:45" (2/3) ... [2023-12-02 14:07:23,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f8d5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:07:23, skipping insertion in model container [2023-12-02 14:07:23,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:07:23" (3/3) ... [2023-12-02 14:07:23,675 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-usb-stk1160-stk1160.cil.i [2023-12-02 14:07:23,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:07:23,691 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-02 14:07:23,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:07:23,767 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;@36747783, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:07:23,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 14:07:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 1233 states, 760 states have (on average 1.3473684210526315) internal successors, (1024), 770 states have internal predecessors, (1024), 390 states have call successors, (390), 81 states have call predecessors, (390), 80 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2023-12-02 14:07:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-02 14:07:23,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:23,808 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 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] [2023-12-02 14:07:23,811 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)] === [2023-12-02 14:07:23,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:23,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2121879033, now seen corresponding path program 1 times [2023-12-02 14:07:23,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:23,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848606158] [2023-12-02 14:07:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:23,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3083 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3083 trivial. 0 not checked. [2023-12-02 14:07:25,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:25,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848606158] [2023-12-02 14:07:25,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848606158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:25,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:25,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:07:25,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903470823] [2023-12-02 14:07:25,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:25,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:07:25,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:25,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:07:25,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:07:25,473 INFO L87 Difference]: Start difference. First operand has 1233 states, 760 states have (on average 1.3473684210526315) internal successors, (1024), 770 states have internal predecessors, (1024), 390 states have call successors, (390), 81 states have call predecessors, (390), 80 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-12-02 14:07:30,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:33,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:35,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:39,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:42,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:44,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:44,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:44,836 INFO L93 Difference]: Finished difference Result 3502 states and 5179 transitions. [2023-12-02 14:07:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:07:44,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 305 [2023-12-02 14:07:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:44,874 INFO L225 Difference]: With dead ends: 3502 [2023-12-02 14:07:44,875 INFO L226 Difference]: Without dead ends: 2314 [2023-12-02 14:07:44,885 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 [2023-12-02 14:07:44,889 INFO L413 NwaCegarLoop]: 1507 mSDtfsCounter, 1617 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 11 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:44,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 2966 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 596 Invalid, 6 Unknown, 0 Unchecked, 19.1s Time] [2023-12-02 14:07:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2023-12-02 14:07:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2310. [2023-12-02 14:07:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2310 states, 1446 states have (on average 1.342323651452282) internal successors, (1941), 1465 states have internal predecessors, (1941), 705 states have call successors, (705), 157 states have call predecessors, (705), 156 states have return successors, (701), 699 states have call predecessors, (701), 701 states have call successors, (701) [2023-12-02 14:07:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 3347 transitions. [2023-12-02 14:07:45,130 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 3347 transitions. Word has length 305 [2023-12-02 14:07:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:45,133 INFO L495 AbstractCegarLoop]: Abstraction has 2310 states and 3347 transitions. [2023-12-02 14:07:45,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-12-02 14:07:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 3347 transitions. [2023-12-02 14:07:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-02 14:07:45,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:45,143 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:45,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:07:45,144 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)] === [2023-12-02 14:07:45,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:45,144 INFO L85 PathProgramCache]: Analyzing trace with hash 122747430, now seen corresponding path program 1 times [2023-12-02 14:07:45,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:45,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768048263] [2023-12-02 14:07:45,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:45,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2023-12-02 14:07:46,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:46,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768048263] [2023-12-02 14:07:46,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768048263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:46,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:46,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:07:46,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481507781] [2023-12-02 14:07:46,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:46,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:07:46,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:46,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:07:46,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:07:46,093 INFO L87 Difference]: Start difference. First operand 2310 states and 3347 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-02 14:07:51,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:56,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:07:58,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:04,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:06,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:09,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:09,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:08:09,550 INFO L93 Difference]: Finished difference Result 5605 states and 8111 transitions. [2023-12-02 14:08:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:08:09,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 308 [2023-12-02 14:08:09,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:08:09,579 INFO L225 Difference]: With dead ends: 5605 [2023-12-02 14:08:09,579 INFO L226 Difference]: Without dead ends: 3352 [2023-12-02 14:08:09,589 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 [2023-12-02 14:08:09,591 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 1571 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 7 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:08:09,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 3085 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 611 Invalid, 6 Unknown, 0 Unchecked, 23.2s Time] [2023-12-02 14:08:09,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2023-12-02 14:08:09,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 3330. [2023-12-02 14:08:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 2090 states have (on average 1.3406698564593302) internal successors, (2802), 2117 states have internal predecessors, (2802), 1008 states have call successors, (1008), 230 states have call predecessors, (1008), 229 states have return successors, (1004), 998 states have call predecessors, (1004), 1004 states have call successors, (1004) [2023-12-02 14:08:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 4814 transitions. [2023-12-02 14:08:09,778 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 4814 transitions. Word has length 308 [2023-12-02 14:08:09,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:08:09,780 INFO L495 AbstractCegarLoop]: Abstraction has 3330 states and 4814 transitions. [2023-12-02 14:08:09,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-02 14:08:09,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 4814 transitions. [2023-12-02 14:08:09,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-02 14:08:09,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:08:09,786 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:08:09,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:08:09,786 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)] === [2023-12-02 14:08:09,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:08:09,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2035280426, now seen corresponding path program 1 times [2023-12-02 14:08:09,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:08:09,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286155] [2023-12-02 14:08:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:09,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:08:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2023-12-02 14:08:11,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:08:11,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286155] [2023-12-02 14:08:11,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:08:11,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:08:11,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:08:11,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651174767] [2023-12-02 14:08:11,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:08:11,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:08:11,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:08:11,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:08:11,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:08:11,019 INFO L87 Difference]: Start difference. First operand 3330 states and 4814 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-02 14:08:12,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:15,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:19,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:21,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:27,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:30,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:32,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:33,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:08:33,001 INFO L93 Difference]: Finished difference Result 9531 states and 13775 transitions. [2023-12-02 14:08:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:08:33,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 310 [2023-12-02 14:08:33,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:08:33,047 INFO L225 Difference]: With dead ends: 9531 [2023-12-02 14:08:33,047 INFO L226 Difference]: Without dead ends: 6258 [2023-12-02 14:08:33,060 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 [2023-12-02 14:08:33,061 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 1523 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 15 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:08:33,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 3165 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 642 Invalid, 6 Unknown, 0 Unchecked, 21.7s Time] [2023-12-02 14:08:33,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2023-12-02 14:08:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 6232. [2023-12-02 14:08:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 3943 states have (on average 1.3431397413137205) internal successors, (5296), 3999 states have internal predecessors, (5296), 1846 states have call successors, (1846), 441 states have call predecessors, (1846), 440 states have return successors, (1842), 1821 states have call predecessors, (1842), 1842 states have call successors, (1842) [2023-12-02 14:08:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 8984 transitions. [2023-12-02 14:08:33,348 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 8984 transitions. Word has length 310 [2023-12-02 14:08:33,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:08:33,349 INFO L495 AbstractCegarLoop]: Abstraction has 6232 states and 8984 transitions. [2023-12-02 14:08:33,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-02 14:08:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 8984 transitions. [2023-12-02 14:08:33,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-02 14:08:33,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:08:33,356 INFO L195 NwaCegarLoop]: trace histogram [30, 28, 28, 28, 28, 28, 28, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:08:33,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:08:33,356 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)] === [2023-12-02 14:08:33,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:08:33,357 INFO L85 PathProgramCache]: Analyzing trace with hash -2145140057, now seen corresponding path program 1 times [2023-12-02 14:08:33,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:08:33,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430754195] [2023-12-02 14:08:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:33,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:08:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3144 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3138 trivial. 0 not checked. [2023-12-02 14:08:34,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:08:34,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430754195] [2023-12-02 14:08:34,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430754195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:08:34,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:08:34,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:08:34,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088852038] [2023-12-02 14:08:34,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:08:34,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:08:34,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:08:34,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:08:34,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:08:34,313 INFO L87 Difference]: Start difference. First operand 6232 states and 8984 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-12-02 14:08:38,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:42,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:44,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:47,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:51,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:53,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:56,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:08:56,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:08:56,649 INFO L93 Difference]: Finished difference Result 13397 states and 19299 transitions. [2023-12-02 14:08:56,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:08:56,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 327 [2023-12-02 14:08:56,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:08:56,702 INFO L225 Difference]: With dead ends: 13397 [2023-12-02 14:08:56,703 INFO L226 Difference]: Without dead ends: 7222 [2023-12-02 14:08:56,726 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 [2023-12-02 14:08:56,728 INFO L413 NwaCegarLoop]: 1910 mSDtfsCounter, 1517 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 3377 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:08:56,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 3377 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 650 Invalid, 6 Unknown, 0 Unchecked, 22.0s Time] [2023-12-02 14:08:56,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7222 states. [2023-12-02 14:08:57,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7222 to 7200. [2023-12-02 14:08:57,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7200 states, 4558 states have (on average 1.343791136463361) internal successors, (6125), 4628 states have internal predecessors, (6125), 2124 states have call successors, (2124), 518 states have call predecessors, (2124), 515 states have return successors, (2120), 2088 states have call predecessors, (2120), 2120 states have call successors, (2120) [2023-12-02 14:08:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7200 states to 7200 states and 10369 transitions. [2023-12-02 14:08:57,111 INFO L78 Accepts]: Start accepts. Automaton has 7200 states and 10369 transitions. Word has length 327 [2023-12-02 14:08:57,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:08:57,111 INFO L495 AbstractCegarLoop]: Abstraction has 7200 states and 10369 transitions. [2023-12-02 14:08:57,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2023-12-02 14:08:57,112 INFO L276 IsEmpty]: Start isEmpty. Operand 7200 states and 10369 transitions. [2023-12-02 14:08:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-02 14:08:57,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:08:57,121 INFO L195 NwaCegarLoop]: trace histogram [32, 28, 28, 28, 28, 28, 28, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:08:57,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 14:08:57,121 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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)] === [2023-12-02 14:08:57,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:08:57,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1936682627, now seen corresponding path program 1 times [2023-12-02 14:08:57,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:08:57,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158284864] [2023-12-02 14:08:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:57,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:08:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3295 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3295 trivial. 0 not checked. [2023-12-02 14:08:59,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:08:59,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158284864] [2023-12-02 14:08:59,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158284864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:08:59,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:08:59,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:08:59,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842468231] [2023-12-02 14:08:59,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:08:59,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:08:59,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:08:59,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:08:59,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:08:59,172 INFO L87 Difference]: Start difference. First operand 7200 states and 10369 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-02 14:09:07,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:09,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:11,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:19,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:21,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:23,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:24,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:09:24,389 INFO L93 Difference]: Finished difference Result 7206 states and 10374 transitions. [2023-12-02 14:09:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:09:24,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 351 [2023-12-02 14:09:24,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:09:24,446 INFO L225 Difference]: With dead ends: 7206 [2023-12-02 14:09:24,446 INFO L226 Difference]: Without dead ends: 7204 [2023-12-02 14:09:24,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:09:24,452 INFO L413 NwaCegarLoop]: 1476 mSDtfsCounter, 1679 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 4419 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:09:24,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 4419 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 864 Invalid, 6 Unknown, 0 Unchecked, 24.8s Time] [2023-12-02 14:09:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7204 states. [2023-12-02 14:09:24,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7204 to 7204. [2023-12-02 14:09:24,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 4561 states have (on average 1.3435650076737558) internal successors, (6128), 4631 states have internal predecessors, (6128), 2124 states have call successors, (2124), 519 states have call predecessors, (2124), 516 states have return successors, (2120), 2088 states have call predecessors, (2120), 2120 states have call successors, (2120) [2023-12-02 14:09:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 10372 transitions. [2023-12-02 14:09:24,888 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 10372 transitions. Word has length 351 [2023-12-02 14:09:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:09:24,889 INFO L495 AbstractCegarLoop]: Abstraction has 7204 states and 10372 transitions. [2023-12-02 14:09:24,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-02 14:09:24,889 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 10372 transitions. [2023-12-02 14:09:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-02 14:09:24,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:09:24,899 INFO L195 NwaCegarLoop]: trace histogram [32, 28, 28, 28, 28, 28, 28, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:09:24,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:09:24,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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)] === [2023-12-02 14:09:24,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:09:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1772171749, now seen corresponding path program 1 times [2023-12-02 14:09:24,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:09:24,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030293055] [2023-12-02 14:09:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:09:24,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:09:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:09:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3297 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3295 trivial. 0 not checked. [2023-12-02 14:09:27,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:09:27,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030293055] [2023-12-02 14:09:27,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030293055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:09:27,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:09:27,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:09:27,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392217017] [2023-12-02 14:09:27,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:09:27,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:09:27,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:09:27,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:09:27,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:09:27,075 INFO L87 Difference]: Start difference. First operand 7204 states and 10372 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-02 14:09:34,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:36,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:38,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:46,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:49,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:51,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:09:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:09:52,041 INFO L93 Difference]: Finished difference Result 7210 states and 10377 transitions. [2023-12-02 14:09:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:09:52,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 356 [2023-12-02 14:09:52,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:09:52,078 INFO L225 Difference]: With dead ends: 7210 [2023-12-02 14:09:52,078 INFO L226 Difference]: Without dead ends: 7208 [2023-12-02 14:09:52,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:09:52,084 INFO L413 NwaCegarLoop]: 1479 mSDtfsCounter, 1674 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 4422 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:09:52,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1679 Valid, 4422 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 864 Invalid, 6 Unknown, 0 Unchecked, 24.5s Time] [2023-12-02 14:09:52,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7208 states. [2023-12-02 14:09:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7208 to 7208. [2023-12-02 14:09:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7208 states, 4564 states have (on average 1.343339176161262) internal successors, (6131), 4634 states have internal predecessors, (6131), 2124 states have call successors, (2124), 520 states have call predecessors, (2124), 517 states have return successors, (2120), 2088 states have call predecessors, (2120), 2120 states have call successors, (2120) [2023-12-02 14:09:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 10375 transitions. [2023-12-02 14:09:52,546 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 10375 transitions. Word has length 356 [2023-12-02 14:09:52,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:09:52,546 INFO L495 AbstractCegarLoop]: Abstraction has 7208 states and 10375 transitions. [2023-12-02 14:09:52,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-02 14:09:52,547 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 10375 transitions. [2023-12-02 14:09:52,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-02 14:09:52,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:09:52,555 INFO L195 NwaCegarLoop]: trace histogram [32, 28, 28, 28, 28, 28, 28, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:09:52,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 14:09:52,556 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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)] === [2023-12-02 14:09:52,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:09:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1324642630, now seen corresponding path program 1 times [2023-12-02 14:09:52,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:09:52,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578840481] [2023-12-02 14:09:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:09:52,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:09:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:09:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3299 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3295 trivial. 0 not checked. [2023-12-02 14:09:54,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:09:54,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578840481] [2023-12-02 14:09:54,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578840481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:09:54,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:09:54,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:09:54,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652836465] [2023-12-02 14:09:54,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:09:54,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:09:54,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:09:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:09:54,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:09:54,500 INFO L87 Difference]: Start difference. First operand 7208 states and 10375 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-02 14:10:02,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:04,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:06,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:10,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:15,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:18,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:20,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:21,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:10:21,230 INFO L93 Difference]: Finished difference Result 7214 states and 10380 transitions. [2023-12-02 14:10:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:10:21,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 361 [2023-12-02 14:10:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:10:21,260 INFO L225 Difference]: With dead ends: 7214 [2023-12-02 14:10:21,260 INFO L226 Difference]: Without dead ends: 7212 [2023-12-02 14:10:21,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:10:21,265 INFO L413 NwaCegarLoop]: 1479 mSDtfsCounter, 1675 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 4422 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:10:21,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1679 Valid, 4422 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 864 Invalid, 6 Unknown, 0 Unchecked, 26.3s Time] [2023-12-02 14:10:21,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7212 states. [2023-12-02 14:10:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7212 to 7212. [2023-12-02 14:10:21,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7212 states, 4567 states have (on average 1.3431136413400482) internal successors, (6134), 4637 states have internal predecessors, (6134), 2124 states have call successors, (2124), 521 states have call predecessors, (2124), 518 states have return successors, (2120), 2088 states have call predecessors, (2120), 2120 states have call successors, (2120) [2023-12-02 14:10:21,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7212 states to 7212 states and 10378 transitions. [2023-12-02 14:10:21,846 INFO L78 Accepts]: Start accepts. Automaton has 7212 states and 10378 transitions. Word has length 361 [2023-12-02 14:10:21,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:10:21,847 INFO L495 AbstractCegarLoop]: Abstraction has 7212 states and 10378 transitions. [2023-12-02 14:10:21,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-02 14:10:21,848 INFO L276 IsEmpty]: Start isEmpty. Operand 7212 states and 10378 transitions. [2023-12-02 14:10:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-02 14:10:21,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:10:21,859 INFO L195 NwaCegarLoop]: trace histogram [32, 28, 28, 28, 28, 28, 28, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:10:21,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 14:10:21,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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)] === [2023-12-02 14:10:21,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:10:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash -331866405, now seen corresponding path program 1 times [2023-12-02 14:10:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:10:21,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274414723] [2023-12-02 14:10:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:10:21,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:10:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:10:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3313 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3307 trivial. 0 not checked. [2023-12-02 14:10:23,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:10:23,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274414723] [2023-12-02 14:10:23,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274414723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:10:23,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:10:23,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:10:23,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270801342] [2023-12-02 14:10:23,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:10:23,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:10:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:10:23,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:10:23,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:10:23,933 INFO L87 Difference]: Start difference. First operand 7212 states and 10378 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 14:10:31,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:33,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:35,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:43,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:45,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:47,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:48,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:10:48,471 INFO L93 Difference]: Finished difference Result 7218 states and 10383 transitions. [2023-12-02 14:10:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:10:48,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 366 [2023-12-02 14:10:48,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:10:48,497 INFO L225 Difference]: With dead ends: 7218 [2023-12-02 14:10:48,497 INFO L226 Difference]: Without dead ends: 7216 [2023-12-02 14:10:48,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:10:48,502 INFO L413 NwaCegarLoop]: 1479 mSDtfsCounter, 1674 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 4422 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:10:48,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 4422 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 864 Invalid, 6 Unknown, 0 Unchecked, 24.1s Time] [2023-12-02 14:10:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2023-12-02 14:10:48,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 7216. [2023-12-02 14:10:48,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7216 states, 4570 states have (on average 1.3428884026258205) internal successors, (6137), 4640 states have internal predecessors, (6137), 2124 states have call successors, (2124), 522 states have call predecessors, (2124), 519 states have return successors, (2120), 2088 states have call predecessors, (2120), 2120 states have call successors, (2120) [2023-12-02 14:10:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7216 states to 7216 states and 10381 transitions. [2023-12-02 14:10:48,980 INFO L78 Accepts]: Start accepts. Automaton has 7216 states and 10381 transitions. Word has length 366 [2023-12-02 14:10:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:10:48,981 INFO L495 AbstractCegarLoop]: Abstraction has 7216 states and 10381 transitions. [2023-12-02 14:10:48,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-02 14:10:48,981 INFO L276 IsEmpty]: Start isEmpty. Operand 7216 states and 10381 transitions. [2023-12-02 14:10:48,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-12-02 14:10:48,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:10:48,992 INFO L195 NwaCegarLoop]: trace histogram [32, 28, 28, 28, 28, 28, 28, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:10:48,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 14:10:48,992 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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)] === [2023-12-02 14:10:48,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:10:48,992 INFO L85 PathProgramCache]: Analyzing trace with hash -731255656, now seen corresponding path program 1 times [2023-12-02 14:10:48,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:10:48,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239873407] [2023-12-02 14:10:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:10:48,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:10:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:10:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3318 trivial. 0 not checked. [2023-12-02 14:10:50,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:10:50,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239873407] [2023-12-02 14:10:50,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239873407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:10:50,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:10:50,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:10:50,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169436454] [2023-12-02 14:10:50,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:10:50,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:10:50,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:10:50,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:10:50,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:10:50,528 INFO L87 Difference]: Start difference. First operand 7216 states and 10381 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 14:10:57,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:10:59,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:01,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:10,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:12,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:15,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:15,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:11:15,888 INFO L93 Difference]: Finished difference Result 7222 states and 10386 transitions. [2023-12-02 14:11:15,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:11:15,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 370 [2023-12-02 14:11:15,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:11:15,913 INFO L225 Difference]: With dead ends: 7222 [2023-12-02 14:11:15,913 INFO L226 Difference]: Without dead ends: 7220 [2023-12-02 14:11:15,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:11:15,916 INFO L413 NwaCegarLoop]: 1479 mSDtfsCounter, 1674 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 4422 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:11:15,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 4422 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 864 Invalid, 6 Unknown, 0 Unchecked, 24.9s Time] [2023-12-02 14:11:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7220 states. [2023-12-02 14:11:16,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7220 to 7220. [2023-12-02 14:11:16,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7220 states, 4573 states have (on average 1.3426634594358189) internal successors, (6140), 4643 states have internal predecessors, (6140), 2124 states have call successors, (2124), 523 states have call predecessors, (2124), 520 states have return successors, (2120), 2088 states have call predecessors, (2120), 2120 states have call successors, (2120) [2023-12-02 14:11:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7220 states to 7220 states and 10384 transitions. [2023-12-02 14:11:16,364 INFO L78 Accepts]: Start accepts. Automaton has 7220 states and 10384 transitions. Word has length 370 [2023-12-02 14:11:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:11:16,365 INFO L495 AbstractCegarLoop]: Abstraction has 7220 states and 10384 transitions. [2023-12-02 14:11:16,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-12-02 14:11:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 7220 states and 10384 transitions. [2023-12-02 14:11:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-12-02 14:11:16,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:11:16,375 INFO L195 NwaCegarLoop]: trace histogram [32, 28, 28, 28, 28, 28, 28, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:11:16,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 14:11:16,375 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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)] === [2023-12-02 14:11:16,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:11:16,376 INFO L85 PathProgramCache]: Analyzing trace with hash -861589605, now seen corresponding path program 1 times [2023-12-02 14:11:16,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:11:16,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057799677] [2023-12-02 14:11:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:16,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:11:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:11:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3345 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3335 trivial. 0 not checked. [2023-12-02 14:11:17,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:11:17,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057799677] [2023-12-02 14:11:17,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057799677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:11:17,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:11:17,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:11:17,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968699152] [2023-12-02 14:11:17,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:11:17,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:11:17,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:11:17,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:11:17,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:11:17,921 INFO L87 Difference]: Start difference. First operand 7220 states and 10384 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-02 14:11:26,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:28,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:30,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:36,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:38,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:40,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:42,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:48,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:50,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:53,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:55,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:11:57,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:00,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:02,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:05,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:12:05,979 INFO L93 Difference]: Finished difference Result 13385 states and 19402 transitions. [2023-12-02 14:12:05,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:12:05,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 376 [2023-12-02 14:12:05,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:12:06,028 INFO L225 Difference]: With dead ends: 13385 [2023-12-02 14:12:06,028 INFO L226 Difference]: Without dead ends: 13381 [2023-12-02 14:12:06,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:12:06,036 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1481 mSDsluCounter, 4582 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 3 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 6198 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:12:06,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 6198 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1232 Invalid, 14 Unknown, 0 Unchecked, 47.1s Time] [2023-12-02 14:12:06,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13381 states. [2023-12-02 14:12:07,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13381 to 13315. [2023-12-02 14:12:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 8464 states have (on average 1.35101606805293) internal successors, (11435), 8609 states have internal predecessors, (11435), 3893 states have call successors, (3893), 977 states have call predecessors, (3893), 955 states have return successors, (3995), 3780 states have call predecessors, (3995), 3885 states have call successors, (3995) [2023-12-02 14:12:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 19323 transitions. [2023-12-02 14:12:07,224 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 19323 transitions. Word has length 376 [2023-12-02 14:12:07,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:12:07,225 INFO L495 AbstractCegarLoop]: Abstraction has 13315 states and 19323 transitions. [2023-12-02 14:12:07,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-12-02 14:12:07,225 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 19323 transitions. [2023-12-02 14:12:07,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-02 14:12:07,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:12:07,237 INFO L195 NwaCegarLoop]: trace histogram [33, 28, 28, 28, 28, 28, 28, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:12:07,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 14:12:07,238 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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)] === [2023-12-02 14:12:07,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:12:07,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1598595715, now seen corresponding path program 1 times [2023-12-02 14:12:07,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:12:07,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260997425] [2023-12-02 14:12:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:12:07,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:12:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:12:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3359 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3352 trivial. 0 not checked. [2023-12-02 14:12:07,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:12:07,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260997425] [2023-12-02 14:12:07,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260997425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:12:07,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:12:07,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:12:07,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827432932] [2023-12-02 14:12:07,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:12:07,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:12:07,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:12:07,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:12:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:12:07,910 INFO L87 Difference]: Start difference. First operand 13315 states and 19323 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-12-02 14:12:13,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:15,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:19,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:24,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:28,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:30,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:33,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:34,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:12:34,465 INFO L93 Difference]: Finished difference Result 30589 states and 44403 transitions. [2023-12-02 14:12:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:12:34,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 372 [2023-12-02 14:12:34,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:12:34,538 INFO L225 Difference]: With dead ends: 30589 [2023-12-02 14:12:34,538 INFO L226 Difference]: Without dead ends: 18969 [2023-12-02 14:12:34,586 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 [2023-12-02 14:12:34,587 INFO L413 NwaCegarLoop]: 2788 mSDtfsCounter, 1589 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 4242 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:12:34,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 4242 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 856 Invalid, 6 Unknown, 0 Unchecked, 25.4s Time] [2023-12-02 14:12:34,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18969 states. [2023-12-02 14:12:35,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18969 to 18881. [2023-12-02 14:12:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18881 states, 12016 states have (on average 1.3532789613848202) internal successors, (16261), 12226 states have internal predecessors, (16261), 5506 states have call successors, (5506), 1387 states have call predecessors, (5506), 1356 states have return successors, (5650), 5338 states have call predecessors, (5650), 5498 states have call successors, (5650) [2023-12-02 14:12:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18881 states to 18881 states and 27417 transitions. [2023-12-02 14:12:35,991 INFO L78 Accepts]: Start accepts. Automaton has 18881 states and 27417 transitions. Word has length 372 [2023-12-02 14:12:35,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:12:35,992 INFO L495 AbstractCegarLoop]: Abstraction has 18881 states and 27417 transitions. [2023-12-02 14:12:35,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-12-02 14:12:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 18881 states and 27417 transitions. [2023-12-02 14:12:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2023-12-02 14:12:36,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:12:36,008 INFO L195 NwaCegarLoop]: trace histogram [32, 28, 28, 28, 28, 28, 28, 7, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:12:36,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 14:12:36,008 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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)] === [2023-12-02 14:12:36,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:12:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash 924807875, now seen corresponding path program 1 times [2023-12-02 14:12:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:12:36,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582687131] [2023-12-02 14:12:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:12:36,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:12:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:12:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3355 trivial. 0 not checked. [2023-12-02 14:12:37,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:12:37,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582687131] [2023-12-02 14:12:37,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582687131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:12:37,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:12:37,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:12:37,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385971484] [2023-12-02 14:12:37,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:12:37,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:12:37,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:12:37,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:12:37,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:12:37,465 INFO L87 Difference]: Start difference. First operand 18881 states and 27417 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-02 14:12:44,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:46,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:48,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:12:58,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:00,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:02,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:03,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:13:03,419 INFO L93 Difference]: Finished difference Result 19146 states and 27700 transitions. [2023-12-02 14:13:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:13:03,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 381 [2023-12-02 14:13:03,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:13:03,470 INFO L225 Difference]: With dead ends: 19146 [2023-12-02 14:13:03,470 INFO L226 Difference]: Without dead ends: 19026 [2023-12-02 14:13:03,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:13:03,480 INFO L413 NwaCegarLoop]: 1483 mSDtfsCounter, 1646 mSDsluCounter, 3040 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:13:03,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1646 Valid, 4523 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 891 Invalid, 6 Unknown, 0 Unchecked, 24.9s Time] [2023-12-02 14:13:03,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19026 states. [2023-12-02 14:13:04,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19026 to 18968. [2023-12-02 14:13:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18968 states, 12094 states have (on average 1.350421696709112) internal successors, (16332), 12277 states have internal predecessors, (16332), 5477 states have call successors, (5477), 1415 states have call predecessors, (5477), 1394 states have return successors, (5625), 5346 states have call predecessors, (5625), 5473 states have call successors, (5625) [2023-12-02 14:13:04,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18968 states to 18968 states and 27434 transitions. [2023-12-02 14:13:04,559 INFO L78 Accepts]: Start accepts. Automaton has 18968 states and 27434 transitions. Word has length 381 [2023-12-02 14:13:04,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:13:04,560 INFO L495 AbstractCegarLoop]: Abstraction has 18968 states and 27434 transitions. [2023-12-02 14:13:04,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-02 14:13:04,560 INFO L276 IsEmpty]: Start isEmpty. Operand 18968 states and 27434 transitions. [2023-12-02 14:13:04,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-02 14:13:04,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:13:04,570 INFO L195 NwaCegarLoop]: trace histogram [33, 28, 28, 28, 28, 28, 28, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:13:04,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 14:13:04,570 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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)] === [2023-12-02 14:13:04,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:13:04,570 INFO L85 PathProgramCache]: Analyzing trace with hash -231347021, now seen corresponding path program 1 times [2023-12-02 14:13:04,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:13:04,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800891637] [2023-12-02 14:13:04,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:13:04,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:13:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:13:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3357 trivial. 0 not checked. [2023-12-02 14:13:05,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:13:05,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800891637] [2023-12-02 14:13:05,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800891637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:13:05,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:13:05,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:13:05,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790684667] [2023-12-02 14:13:05,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:13:05,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:13:05,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:13:05,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:13:05,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:13:05,196 INFO L87 Difference]: Start difference. First operand 18968 states and 27434 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-02 14:13:10,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:12,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:16,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:20,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:25,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:27,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:30,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:30,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:13:30,924 INFO L93 Difference]: Finished difference Result 41747 states and 60442 transitions. [2023-12-02 14:13:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:13:30,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 378 [2023-12-02 14:13:30,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:13:31,006 INFO L225 Difference]: With dead ends: 41747 [2023-12-02 14:13:31,006 INFO L226 Difference]: Without dead ends: 24474 [2023-12-02 14:13:31,054 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 [2023-12-02 14:13:31,054 INFO L413 NwaCegarLoop]: 2739 mSDtfsCounter, 1538 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 11 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 4177 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:13:31,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 4177 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 852 Invalid, 6 Unknown, 0 Unchecked, 24.2s Time] [2023-12-02 14:13:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24474 states. [2023-12-02 14:13:32,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24474 to 24425. [2023-12-02 14:13:32,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24425 states, 15584 states have (on average 1.351578542094456) internal successors, (21063), 15827 states have internal predecessors, (21063), 7048 states have call successors, (7048), 1814 states have call predecessors, (7048), 1790 states have return successors, (7232), 6875 states have call predecessors, (7232), 7044 states have call successors, (7232) [2023-12-02 14:13:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24425 states to 24425 states and 35343 transitions. [2023-12-02 14:13:32,520 INFO L78 Accepts]: Start accepts. Automaton has 24425 states and 35343 transitions. Word has length 378 [2023-12-02 14:13:32,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:13:32,521 INFO L495 AbstractCegarLoop]: Abstraction has 24425 states and 35343 transitions. [2023-12-02 14:13:32,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-02 14:13:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 24425 states and 35343 transitions. [2023-12-02 14:13:32,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2023-12-02 14:13:32,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:13:32,543 INFO L195 NwaCegarLoop]: trace histogram [35, 28, 28, 28, 28, 28, 28, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:13:32,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 14:13:32,543 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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)] === [2023-12-02 14:13:32,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:13:32,544 INFO L85 PathProgramCache]: Analyzing trace with hash 394098560, now seen corresponding path program 1 times [2023-12-02 14:13:32,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:13:32,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135288699] [2023-12-02 14:13:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:13:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:13:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:13:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3508 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3493 trivial. 0 not checked. [2023-12-02 14:13:33,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:13:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135288699] [2023-12-02 14:13:33,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135288699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:13:33,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:13:33,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:13:33,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037227036] [2023-12-02 14:13:33,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:13:33,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:13:33,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:13:33,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:13:33,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:13:33,548 INFO L87 Difference]: Start difference. First operand 24425 states and 35343 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 4 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-02 14:13:35,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:43,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:45,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:47,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:49,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:57,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:13:59,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:01,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:08,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:16,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:18,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:20,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:23,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:26,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:28,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:30,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:32,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:14:32,857 INFO L93 Difference]: Finished difference Result 54509 states and 78847 transitions. [2023-12-02 14:14:32,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:14:32,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 4 states have call predecessors, (41), 3 states have call successors, (41) Word has length 394 [2023-12-02 14:14:32,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:14:32,952 INFO L225 Difference]: With dead ends: 54509 [2023-12-02 14:14:32,952 INFO L226 Difference]: Without dead ends: 31779 [2023-12-02 14:14:33,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:14:33,005 INFO L413 NwaCegarLoop]: 2784 mSDtfsCounter, 1568 mSDsluCounter, 7016 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 1 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 9800 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:14:33,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1568 Valid, 9800 Invalid, 1974 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1959 Invalid, 14 Unknown, 0 Unchecked, 57.2s Time] [2023-12-02 14:14:33,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31779 states. [2023-12-02 14:14:34,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31779 to 31710. [2023-12-02 14:14:34,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31710 states, 20223 states have (on average 1.3515798842901647) internal successors, (27333), 20541 states have internal predecessors, (27333), 9150 states have call successors, (9150), 2357 states have call predecessors, (9150), 2334 states have return successors, (9394), 8928 states have call predecessors, (9394), 9146 states have call successors, (9394) [2023-12-02 14:14:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31710 states to 31710 states and 45877 transitions. [2023-12-02 14:14:34,914 INFO L78 Accepts]: Start accepts. Automaton has 31710 states and 45877 transitions. Word has length 394 [2023-12-02 14:14:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:14:34,914 INFO L495 AbstractCegarLoop]: Abstraction has 31710 states and 45877 transitions. [2023-12-02 14:14:34,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 4 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-02 14:14:34,914 INFO L276 IsEmpty]: Start isEmpty. Operand 31710 states and 45877 transitions. [2023-12-02 14:14:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-12-02 14:14:34,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:14:34,928 INFO L195 NwaCegarLoop]: trace histogram [35, 28, 28, 28, 28, 28, 28, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:14:34,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 14:14:34,929 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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)] === [2023-12-02 14:14:34,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:14:34,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1636690832, now seen corresponding path program 1 times [2023-12-02 14:14:34,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:14:34,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773956162] [2023-12-02 14:14:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:14:34,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:14:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:14:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3508 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3493 trivial. 0 not checked. [2023-12-02 14:14:35,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:14:35,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773956162] [2023-12-02 14:14:35,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773956162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:14:35,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:14:35,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:14:35,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461350418] [2023-12-02 14:14:35,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:14:35,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:14:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:14:35,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:14:35,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:14:35,631 INFO L87 Difference]: Start difference. First operand 31710 states and 45877 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 4 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-02 14:14:44,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:46,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:48,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:50,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:14:58,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:00,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:02,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:09,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:12,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:17,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:19,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:22,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:24,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:27,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:30,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:32,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:34,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:15:34,790 INFO L93 Difference]: Finished difference Result 69113 states and 99956 transitions. [2023-12-02 14:15:34,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:15:34,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 4 states have call predecessors, (41), 3 states have call successors, (41) Word has length 395 [2023-12-02 14:15:34,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:15:34,897 INFO L225 Difference]: With dead ends: 69113 [2023-12-02 14:15:34,897 INFO L226 Difference]: Without dead ends: 39098 [2023-12-02 14:15:34,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:15:34,956 INFO L413 NwaCegarLoop]: 2789 mSDtfsCounter, 1594 mSDsluCounter, 7002 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 3 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 9791 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:15:34,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 9791 Invalid, 1963 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1946 Invalid, 14 Unknown, 0 Unchecked, 56.7s Time] [2023-12-02 14:15:34,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39098 states. [2023-12-02 14:15:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39098 to 39029. [2023-12-02 14:15:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39029 states, 24887 states have (on average 1.3512275485193073) internal successors, (33628), 25280 states have internal predecessors, (33628), 11252 states have call successors, (11252), 2909 states have call predecessors, (11252), 2887 states have return successors, (11556), 10981 states have call predecessors, (11556), 11248 states have call successors, (11556) [2023-12-02 14:15:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39029 states to 39029 states and 56436 transitions. [2023-12-02 14:15:37,501 INFO L78 Accepts]: Start accepts. Automaton has 39029 states and 56436 transitions. Word has length 395 [2023-12-02 14:15:37,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:15:37,502 INFO L495 AbstractCegarLoop]: Abstraction has 39029 states and 56436 transitions. [2023-12-02 14:15:37,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 4 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-02 14:15:37,502 INFO L276 IsEmpty]: Start isEmpty. Operand 39029 states and 56436 transitions. [2023-12-02 14:15:37,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-02 14:15:37,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:15:37,519 INFO L195 NwaCegarLoop]: trace histogram [35, 28, 28, 28, 28, 28, 28, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:15:37,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 14:15:37,519 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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)] === [2023-12-02 14:15:37,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:15:37,520 INFO L85 PathProgramCache]: Analyzing trace with hash -652531357, now seen corresponding path program 1 times [2023-12-02 14:15:37,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:15:37,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8118264] [2023-12-02 14:15:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:15:37,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:15:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:15:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3508 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3493 trivial. 0 not checked. [2023-12-02 14:15:38,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:15:38,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8118264] [2023-12-02 14:15:38,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8118264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:15:38,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:15:38,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:15:38,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698182967] [2023-12-02 14:15:38,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:15:38,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:15:38,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:15:38,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:15:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:15:38,302 INFO L87 Difference]: Start difference. First operand 39029 states and 56436 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 4 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-02 14:15:46,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:48,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:50,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:15:52,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:00,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:02,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:04,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:17,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:20,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:22,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:24,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:28,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:30,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:32,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:35,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:16:35,232 INFO L93 Difference]: Finished difference Result 83757 states and 121113 transitions. [2023-12-02 14:16:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:16:35,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 4 states have call predecessors, (41), 3 states have call successors, (41) Word has length 396 [2023-12-02 14:16:35,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:16:35,367 INFO L225 Difference]: With dead ends: 83757 [2023-12-02 14:16:35,367 INFO L226 Difference]: Without dead ends: 46423 [2023-12-02 14:16:35,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:16:35,440 INFO L413 NwaCegarLoop]: 2785 mSDtfsCounter, 1584 mSDsluCounter, 7003 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 6 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 9788 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:16:35,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 9788 Invalid, 1994 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 1974 Invalid, 14 Unknown, 0 Unchecked, 54.0s Time] [2023-12-02 14:16:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46423 states. [2023-12-02 14:16:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46423 to 46354. [2023-12-02 14:16:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46354 states, 29566 states have (on average 1.350808360955151) internal successors, (39938), 30034 states have internal predecessors, (39938), 13354 states have call successors, (13354), 3452 states have call predecessors, (13354), 3431 states have return successors, (13718), 13034 states have call predecessors, (13718), 13350 states have call successors, (13718) [2023-12-02 14:16:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46354 states to 46354 states and 67010 transitions. [2023-12-02 14:16:38,376 INFO L78 Accepts]: Start accepts. Automaton has 46354 states and 67010 transitions. Word has length 396 [2023-12-02 14:16:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:16:38,377 INFO L495 AbstractCegarLoop]: Abstraction has 46354 states and 67010 transitions. [2023-12-02 14:16:38,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 4 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-02 14:16:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 46354 states and 67010 transitions. [2023-12-02 14:16:38,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-12-02 14:16:38,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:16:38,393 INFO L195 NwaCegarLoop]: trace histogram [35, 28, 28, 28, 28, 28, 28, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:16:38,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 14:16:38,393 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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)] === [2023-12-02 14:16:38,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:16:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash -758852141, now seen corresponding path program 1 times [2023-12-02 14:16:38,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:16:38,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403490440] [2023-12-02 14:16:38,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:16:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:16:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:16:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3508 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3493 trivial. 0 not checked. [2023-12-02 14:16:39,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:16:39,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403490440] [2023-12-02 14:16:39,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403490440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:16:39,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:16:39,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:16:39,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559815792] [2023-12-02 14:16:39,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:16:39,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:16:39,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:16:39,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:16:39,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:16:39,124 INFO L87 Difference]: Start difference. First operand 46354 states and 67010 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 4 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-02 14:16:48,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:50,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:52,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:16:54,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:01,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:03,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:05,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:10,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:19,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:21,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:23,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:26,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:29,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:32,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:34,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:17:35,401 INFO L93 Difference]: Finished difference Result 98415 states and 142277 transitions. [2023-12-02 14:17:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:17:35,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 4 states have call predecessors, (41), 3 states have call successors, (41) Word has length 397 [2023-12-02 14:17:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:17:35,578 INFO L225 Difference]: With dead ends: 98415 [2023-12-02 14:17:35,578 INFO L226 Difference]: Without dead ends: 53756 [2023-12-02 14:17:35,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:17:35,681 INFO L413 NwaCegarLoop]: 2587 mSDtfsCounter, 1570 mSDsluCounter, 6620 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 7 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 9207 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:17:35,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 9207 Invalid, 1915 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1894 Invalid, 14 Unknown, 0 Unchecked, 53.1s Time] [2023-12-02 14:17:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53756 states. [2023-12-02 14:17:38,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53756 to 53687. [2023-12-02 14:17:38,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53687 states, 34253 states have (on average 1.350421860858903) internal successors, (46256), 34796 states have internal predecessors, (46256), 15456 states have call successors, (15456), 3995 states have call predecessors, (15456), 3975 states have return successors, (15880), 15087 states have call predecessors, (15880), 15452 states have call successors, (15880) [2023-12-02 14:17:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53687 states to 53687 states and 77592 transitions. [2023-12-02 14:17:38,725 INFO L78 Accepts]: Start accepts. Automaton has 53687 states and 77592 transitions. Word has length 397 [2023-12-02 14:17:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:17:38,725 INFO L495 AbstractCegarLoop]: Abstraction has 53687 states and 77592 transitions. [2023-12-02 14:17:38,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (41), 4 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-02 14:17:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand 53687 states and 77592 transitions. [2023-12-02 14:17:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-12-02 14:17:38,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:17:38,739 INFO L195 NwaCegarLoop]: trace histogram [35, 28, 28, 28, 28, 28, 28, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:17:38,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 14:17:38,739 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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)] === [2023-12-02 14:17:38,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:17:38,740 INFO L85 PathProgramCache]: Analyzing trace with hash -133143422, now seen corresponding path program 1 times [2023-12-02 14:17:38,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:17:38,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125685061] [2023-12-02 14:17:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:17:38,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:17:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:17:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3508 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3508 trivial. 0 not checked. [2023-12-02 14:17:40,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:17:40,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125685061] [2023-12-02 14:17:40,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125685061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:17:40,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:17:40,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:17:40,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390832888] [2023-12-02 14:17:40,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:17:40,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:17:40,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:17:40,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:17:40,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:17:40,666 INFO L87 Difference]: Start difference. First operand 53687 states and 77592 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-02 14:17:47,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:49,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:51,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:57,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:17:59,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:01,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:03,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:12,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:14,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:17,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:19,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:22,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:24,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:26,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:28,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:18:28,258 INFO L93 Difference]: Finished difference Result 54094 states and 78078 transitions. [2023-12-02 14:18:28,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:18:28,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 399 [2023-12-02 14:18:28,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:18:28,418 INFO L225 Difference]: With dead ends: 54094 [2023-12-02 14:18:28,418 INFO L226 Difference]: Without dead ends: 54092 [2023-12-02 14:18:28,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:18:28,442 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 1430 mSDsluCounter, 4616 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 3 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 6243 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:18:28,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 6243 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1231 Invalid, 14 Unknown, 0 Unchecked, 44.9s Time] [2023-12-02 14:18:28,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54092 states. [2023-12-02 14:18:31,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54092 to 53771. [2023-12-02 14:18:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53771 states, 34309 states have (on average 1.349208662450086) internal successors, (46290), 34852 states have internal predecessors, (46290), 15470 states have call successors, (15470), 4016 states have call predecessors, (15470), 3989 states have return successors, (15894), 15094 states have call predecessors, (15894), 15466 states have call successors, (15894) [2023-12-02 14:18:31,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53771 states to 53771 states and 77654 transitions. [2023-12-02 14:18:31,427 INFO L78 Accepts]: Start accepts. Automaton has 53771 states and 77654 transitions. Word has length 399 [2023-12-02 14:18:31,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:18:31,428 INFO L495 AbstractCegarLoop]: Abstraction has 53771 states and 77654 transitions. [2023-12-02 14:18:31,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-02 14:18:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 53771 states and 77654 transitions. [2023-12-02 14:18:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-02 14:18:31,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:18:31,462 INFO L195 NwaCegarLoop]: trace histogram [36, 28, 28, 28, 28, 28, 28, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:18:31,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 14:18:31,463 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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)] === [2023-12-02 14:18:31,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:18:31,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1402747013, now seen corresponding path program 1 times [2023-12-02 14:18:31,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:18:31,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030326610] [2023-12-02 14:18:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:18:31,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:18:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:18:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2023-12-02 14:18:32,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:18:32,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030326610] [2023-12-02 14:18:32,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030326610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:18:32,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:18:32,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:18:32,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804485618] [2023-12-02 14:18:32,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:18:32,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:18:32,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:18:32,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:18:32,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:18:32,658 INFO L87 Difference]: Start difference. First operand 53771 states and 77654 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2023-12-02 14:18:37,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:39,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:43,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:54,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:56,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:18:59,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:19:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:19:01,166 INFO L93 Difference]: Finished difference Result 155552 states and 224768 transitions. [2023-12-02 14:19:01,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:19:01,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 439 [2023-12-02 14:19:01,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:19:01,488 INFO L225 Difference]: With dead ends: 155552 [2023-12-02 14:19:01,488 INFO L226 Difference]: Without dead ends: 103476 [2023-12-02 14:19:01,592 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 [2023-12-02 14:19:01,593 INFO L413 NwaCegarLoop]: 2668 mSDtfsCounter, 1600 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 4116 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:19:01,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 4116 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 836 Invalid, 6 Unknown, 0 Unchecked, 23.3s Time] [2023-12-02 14:19:01,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103476 states. [2023-12-02 14:19:07,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103476 to 103442. [2023-12-02 14:19:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103442 states, 66386 states have (on average 1.3477992347784171) internal successors, (89475), 67269 states have internal predecessors, (89475), 29382 states have call successors, (29382), 7715 states have call predecessors, (29382), 7671 states have return successors, (30224), 28835 states have call predecessors, (30224), 29378 states have call successors, (30224) [2023-12-02 14:19:07,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103442 states to 103442 states and 149081 transitions. [2023-12-02 14:19:07,882 INFO L78 Accepts]: Start accepts. Automaton has 103442 states and 149081 transitions. Word has length 439 [2023-12-02 14:19:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:19:07,883 INFO L495 AbstractCegarLoop]: Abstraction has 103442 states and 149081 transitions. [2023-12-02 14:19:07,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2023-12-02 14:19:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 103442 states and 149081 transitions. [2023-12-02 14:19:07,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2023-12-02 14:19:07,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:19:07,942 INFO L195 NwaCegarLoop]: trace histogram [38, 28, 28, 28, 28, 28, 28, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:19:07,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 14:19:07,942 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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)] === [2023-12-02 14:19:07,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:19:07,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1234292949, now seen corresponding path program 1 times [2023-12-02 14:19:07,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:19:07,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805374168] [2023-12-02 14:19:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:19:07,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:19:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:19:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3779 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 3734 trivial. 0 not checked. [2023-12-02 14:19:09,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:19:09,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805374168] [2023-12-02 14:19:09,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805374168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:19:09,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:19:09,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:19:09,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270823378] [2023-12-02 14:19:09,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:19:09,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:19:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:19:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:19:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:19:09,268 INFO L87 Difference]: Start difference. First operand 103442 states and 149081 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-12-02 14:19:14,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:19:16,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:19:18,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:19:24,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:19:26,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:19:43,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:19:46,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:19:48,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:19:52,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:19:54,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:19:57,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:19:57,374 INFO L93 Difference]: Finished difference Result 254992 states and 367531 transitions. [2023-12-02 14:19:57,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:19:57,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 462 [2023-12-02 14:19:57,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:19:57,882 INFO L225 Difference]: With dead ends: 254992 [2023-12-02 14:19:57,882 INFO L226 Difference]: Without dead ends: 153245 [2023-12-02 14:19:58,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:19:58,200 INFO L413 NwaCegarLoop]: 2785 mSDtfsCounter, 1606 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 11 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 4898 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:19:58,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 4898 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1799 Invalid, 10 Unknown, 0 Unchecked, 39.8s Time] [2023-12-02 14:19:58,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153245 states.