./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:36:51,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:36:51,521 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:36:51,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:36:51,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:36:51,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:36:51,561 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:36:51,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:36:51,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:36:51,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:36:51,564 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:36:51,564 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:36:51,565 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:36:51,566 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:36:51,570 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:36:51,570 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:36:51,571 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:36:51,572 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:36:51,572 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:36:51,573 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:36:51,577 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:36:51,578 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:36:51,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:36:51,579 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:36:51,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:36:51,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:36:51,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:36:51,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:36:51,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:36:51,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:36:51,587 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:36:51,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:36:51,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:36:51,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:36:51,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:51,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:36:51,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:36:51,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:36:51,592 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:36:51,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:36:51,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:36:51,593 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:36:51,593 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:36:51,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:36:51,594 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_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb [2023-11-23 20:36:51,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:36:51,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:36:51,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:36:51,951 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:36:51,951 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:36:51,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2023-11-23 20:36:55,166 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:36:55,910 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:36:55,910 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2023-11-23 20:36:55,977 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/data/d208080a1/5f428ec390ab46f59ec0800cbd1fdc5e/FLAGcc8840202 [2023-11-23 20:36:55,993 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/data/d208080a1/5f428ec390ab46f59ec0800cbd1fdc5e [2023-11-23 20:36:55,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:36:55,997 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:36:56,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:36:56,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:36:56,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:36:56,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:56,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343e4b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:36:56, skipping insertion in model container [2023-11-23 20:36:56,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:36:55" (1/1) ... [2023-11-23 20:36:56,166 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:36:59,224 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_740e41b8-be54-4710-99d2-0f3c7a220fdc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2023-11-23 20:36:59,228 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_740e41b8-be54-4710-99d2-0f3c7a220fdc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2023-11-23 20:36:59,229 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_740e41b8-be54-4710-99d2-0f3c7a220fdc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2023-11-23 20:36:59,234 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_740e41b8-be54-4710-99d2-0f3c7a220fdc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2023-11-23 20:36:59,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:36:59,375 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:36:59,517 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"); [4781] [2023-11-23 20:36:59,519 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [4788] [2023-11-23 20:36:59,520 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("":); [4795] [2023-11-23 20:36:59,522 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; decl %0": "+m" (v->counter)); [4833] [2023-11-23 20:36:59,839 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_740e41b8-be54-4710-99d2-0f3c7a220fdc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2023-11-23 20:36:59,839 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_740e41b8-be54-4710-99d2-0f3c7a220fdc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2023-11-23 20:36:59,840 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_740e41b8-be54-4710-99d2-0f3c7a220fdc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2023-11-23 20:36:59,841 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_740e41b8-be54-4710-99d2-0f3c7a220fdc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2023-11-23 20:36:59,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:00,156 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:00,164 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:37:00,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00 WrapperNode [2023-11-23 20:37:00,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:00,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:00,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:37:00,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:37:00,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,528 INFO L138 Inliner]: procedures = 424, calls = 2664, calls flagged for inlining = 194, calls inlined = 144, statements flattened = 5131 [2023-11-23 20:37:00,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:00,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:37:00,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:37:00,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:37:00,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,810 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:37:00,963 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:37:00,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:37:00,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:37:00,965 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:00,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:00,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:37:01,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740e41b8-be54-4710-99d2-0f3c7a220fdc/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:37:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-23 20:37:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-23 20:37:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 20:37:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 20:37:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-23 20:37:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-23 20:37:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:37:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:37:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 20:37:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 20:37:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-23 20:37:01,048 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-23 20:37:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_stereo_mono [2023-11-23 20:37:01,048 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_stereo_mono [2023-11-23 20:37:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 20:37:01,049 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 20:37:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_59 [2023-11-23 20:37:01,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_59 [2023-11-23 20:37:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_len [2023-11-23 20:37:01,052 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_len [2023-11-23 20:37:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-23 20:37:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2023-11-23 20:37:01,053 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2023-11-23 20:37:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 20:37:01,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 20:37:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-23 20:37:01,054 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-23 20:37:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_49 [2023-11-23 20:37:01,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_49 [2023-11-23 20:37:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2023-11-23 20:37:01,054 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2023-11-23 20:37:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 20:37:01,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 20:37:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 20:37:01,055 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 20:37:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:37:01,056 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2023-11-23 20:37:01,056 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2023-11-23 20:37:01,056 INFO L130 BoogieDeclarations]: Found specification of procedure st_unregister [2023-11-23 20:37:01,056 INFO L138 BoogieDeclarations]: Found implementation of procedure st_unregister [2023-11-23 20:37:01,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 20:37:01,056 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-23 20:37:01,057 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-23 20:37:01,057 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 20:37:01,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 20:37:01,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:37:01,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 20:37:01,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 20:37:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:37:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_release [2023-11-23 20:37:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_release [2023-11-23 20:37:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 20:37:01,060 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 20:37:01,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 20:37:01,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 20:37:01,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-23 20:37:01,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-23 20:37:01,061 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_rds_mode [2023-11-23 20:37:01,061 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_rds_mode [2023-11-23 20:37:01,062 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2023-11-23 20:37:01,062 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2023-11-23 20:37:01,062 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2023-11-23 20:37:01,063 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2023-11-23 20:37:01,064 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_rds_mode [2023-11-23 20:37:01,064 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_rds_mode [2023-11-23 20:37:01,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 20:37:01,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 20:37:01,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:37:01,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-11-23 20:37:01,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-11-23 20:37:01,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-23 20:37:01,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-23 20:37:01,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-11-23 20:37:01,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-11-23 20:37:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2023-11-23 20:37:01,066 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2023-11-23 20:37:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:37:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 20:37:01,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 20:37:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:37:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-11-23 20:37:01,068 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-11-23 20:37:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2023-11-23 20:37:01,068 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2023-11-23 20:37:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_preemph_filter [2023-11-23 20:37:01,068 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_preemph_filter [2023-11-23 20:37:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2023-11-23 20:37:01,069 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2023-11-23 20:37:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-23 20:37:01,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-23 20:37:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-23 20:37:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-23 20:37:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2023-11-23 20:37:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2023-11-23 20:37:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-23 20:37:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-23 20:37:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure fm_g_volatile_ctrl [2023-11-23 20:37:01,071 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_g_volatile_ctrl [2023-11-23 20:37:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:37:01,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:37:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 20:37:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 20:37:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 20:37:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 20:37:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure fm_config_rx_mute_reg [2023-11-23 20:37:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_config_rx_mute_reg [2023-11-23 20:37:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2023-11-23 20:37:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2023-11-23 20:37:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 20:37:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:37:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_data_mode [2023-11-23 20:37:01,075 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_data_mode [2023-11-23 20:37:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:37:01,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:37:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_pwr_lvl [2023-11-23 20:37:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_pwr_lvl [2023-11-23 20:37:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 20:37:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 20:37:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2023-11-23 20:37:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2023-11-23 20:37:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_prepare [2023-11-23 20:37:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_prepare [2023-11-23 20:37:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_send_cmd [2023-11-23 20:37:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_send_cmd [2023-11-23 20:37:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2023-11-23 20:37:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2023-11-23 20:37:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2023-11-23 20:37:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2023-11-23 20:37:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_resp_skb_lock_of_fmdev [2023-11-23 20:37:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_resp_skb_lock_of_fmdev [2023-11-23 20:37:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 20:37:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 20:37:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure fm_send_cmd [2023-11-23 20:37:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_send_cmd [2023-11-23 20:37:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2023-11-23 20:37:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2023-11-23 20:37:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:37:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:37:01,086 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call_stage [2023-11-23 20:37:01,086 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call_stage [2023-11-23 20:37:01,086 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2023-11-23 20:37:01,087 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2023-11-23 20:37:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2023-11-23 20:37:01,088 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2023-11-23 20:37:01,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:37:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2023-11-23 20:37:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2023-11-23 20:37:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:37:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_rds_cache [2023-11-23 20:37:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_rds_cache [2023-11-23 20:37:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_station_info [2023-11-23 20:37:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_station_info [2023-11-23 20:37:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_s_ctrl [2023-11-23 20:37:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_s_ctrl [2023-11-23 20:37:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:37:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rds_buff_lock_of_fmdev [2023-11-23 20:37:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rds_buff_lock_of_fmdev [2023-11-23 20:37:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-23 20:37:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-23 20:37:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 20:37:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 20:37:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2023-11-23 20:37:01,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2023-11-23 20:37:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure enable_xmit [2023-11-23 20:37:01,098 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_xmit [2023-11-23 20:37:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-23 20:37:01,098 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-23 20:37:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_volume [2023-11-23 20:37:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_volume [2023-11-23 20:37:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-23 20:37:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-23 20:37:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-23 20:37:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-23 20:37:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-23 20:37:01,100 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-23 20:37:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 20:37:01,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 20:37:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 20:37:01,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 20:37:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_text [2023-11-23 20:37:01,101 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_text [2023-11-23 20:37:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2023-11-23 20:37:01,101 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2023-11-23 20:37:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_release [2023-11-23 20:37:01,101 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_release [2023-11-23 20:37:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-23 20:37:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-23 20:37:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:37:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:37:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2023-11-23 20:37:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2023-11-23 20:37:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:37:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2023-11-23 20:37:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2023-11-23 20:37:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 20:37:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 20:37:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_open [2023-11-23 20:37:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_open [2023-11-23 20:37:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-23 20:37:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-23 20:37:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_freq [2023-11-23 20:37:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_freq [2023-11-23 20:37:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_mode [2023-11-23 20:37:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_mode [2023-11-23 20:37:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_write [2023-11-23 20:37:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_write [2023-11-23 20:37:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-23 20:37:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-23 20:37:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call [2023-11-23 20:37:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call [2023-11-23 20:37:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 20:37:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 20:37:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-23 20:37:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-23 20:37:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure fm_power_down [2023-11-23 20:37:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_power_down [2023-11-23 20:37:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure fm_download_firmware [2023-11-23 20:37:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_download_firmware [2023-11-23 20:37:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:37:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 20:37:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 20:37:01,962 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:37:01,969 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:37:02,211 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:37:08,258 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 20:37:08,456 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:37:09,869 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:37:09,869 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:37:09,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:09 BoogieIcfgContainer [2023-11-23 20:37:09,872 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:37:09,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:37:09,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:37:09,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:37:09,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:36:55" (1/3) ... [2023-11-23 20:37:09,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5e8db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:09, skipping insertion in model container [2023-11-23 20:37:09,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00" (2/3) ... [2023-11-23 20:37:09,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5e8db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:09, skipping insertion in model container [2023-11-23 20:37:09,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:09" (3/3) ... [2023-11-23 20:37:09,882 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2023-11-23 20:37:09,907 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:37:09,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-23 20:37:10,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:37:10,028 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;@747003c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:37:10,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 20:37:10,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 1533 states, 928 states have (on average 1.3275862068965518) internal successors, (1232), 944 states have internal predecessors, (1232), 501 states have call successors, (501), 102 states have call predecessors, (501), 101 states have return successors, (494), 491 states have call predecessors, (494), 494 states have call successors, (494) [2023-11-23 20:37:10,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-23 20:37:10,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:10,090 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:37:10,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 20:37:10,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1637140837, now seen corresponding path program 1 times [2023-11-23 20:37:10,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:10,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197618355] [2023-11-23 20:37:10,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:10,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2023-11-23 20:37:11,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:11,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197618355] [2023-11-23 20:37:11,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197618355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:11,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:11,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:11,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715078943] [2023-11-23 20:37:11,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:11,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:11,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:11,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:11,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:11,431 INFO L87 Difference]: Start difference. First operand has 1533 states, 928 states have (on average 1.3275862068965518) internal successors, (1232), 944 states have internal predecessors, (1232), 501 states have call successors, (501), 102 states have call predecessors, (501), 101 states have return successors, (494), 491 states have call predecessors, (494), 494 states have call successors, (494) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-23 20:37:15,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:15,375 INFO L93 Difference]: Finished difference Result 4366 states and 6584 transitions. [2023-11-23 20:37:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:37:15,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 216 [2023-11-23 20:37:15,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:15,427 INFO L225 Difference]: With dead ends: 4366 [2023-11-23 20:37:15,427 INFO L226 Difference]: Without dead ends: 2861 [2023-11-23 20:37:15,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:15,457 INFO L413 NwaCegarLoop]: 1972 mSDtfsCounter, 2065 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:15,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 3812 Invalid, 534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 20:37:15,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2023-11-23 20:37:15,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2857. [2023-11-23 20:37:15,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2857 states, 1752 states have (on average 1.3247716894977168) internal successors, (2321), 1782 states have internal predecessors, (2321), 909 states have call successors, (909), 194 states have call predecessors, (909), 193 states have return successors, (905), 899 states have call predecessors, (905), 905 states have call successors, (905) [2023-11-23 20:37:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 4135 transitions. [2023-11-23 20:37:15,901 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 4135 transitions. Word has length 216 [2023-11-23 20:37:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:15,906 INFO L495 AbstractCegarLoop]: Abstraction has 2857 states and 4135 transitions. [2023-11-23 20:37:15,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-23 20:37:15,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 4135 transitions. [2023-11-23 20:37:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-23 20:37:15,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:15,927 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:37:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:37:15,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 20:37:15,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash 75465358, now seen corresponding path program 1 times [2023-11-23 20:37:15,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:15,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684901205] [2023-11-23 20:37:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2023-11-23 20:37:16,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:16,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684901205] [2023-11-23 20:37:16,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684901205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:16,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:16,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:16,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365181408] [2023-11-23 20:37:16,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:16,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:16,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:16,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:16,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:16,717 INFO L87 Difference]: Start difference. First operand 2857 states and 4135 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 20:37:19,912 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 [] [2023-11-23 20:37:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:20,143 INFO L93 Difference]: Finished difference Result 5467 states and 7889 transitions. [2023-11-23 20:37:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:37:20,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 226 [2023-11-23 20:37:20,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:20,177 INFO L225 Difference]: With dead ends: 5467 [2023-11-23 20:37:20,178 INFO L226 Difference]: Without dead ends: 2649 [2023-11-23 20:37:20,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:20,202 INFO L413 NwaCegarLoop]: 1804 mSDtfsCounter, 1962 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:20,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1962 Valid, 1876 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2023-11-23 20:37:20,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2023-11-23 20:37:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2649. [2023-11-23 20:37:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 1630 states have (on average 1.320245398773006) internal successors, (2152), 1642 states have internal predecessors, (2152), 831 states have call successors, (831), 186 states have call predecessors, (831), 185 states have return successors, (827), 827 states have call predecessors, (827), 827 states have call successors, (827) [2023-11-23 20:37:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3810 transitions. [2023-11-23 20:37:20,450 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3810 transitions. Word has length 226 [2023-11-23 20:37:20,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:20,452 INFO L495 AbstractCegarLoop]: Abstraction has 2649 states and 3810 transitions. [2023-11-23 20:37:20,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 20:37:20,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3810 transitions. [2023-11-23 20:37:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-23 20:37:20,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:20,460 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:37:20,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:37:20,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 20:37:20,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:20,461 INFO L85 PathProgramCache]: Analyzing trace with hash 474475710, now seen corresponding path program 1 times [2023-11-23 20:37:20,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:20,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677153696] [2023-11-23 20:37:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:20,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2023-11-23 20:37:21,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:21,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677153696] [2023-11-23 20:37:21,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677153696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:21,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:21,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:21,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846452063] [2023-11-23 20:37:21,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:21,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:21,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:21,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:21,033 INFO L87 Difference]: Start difference. First operand 2649 states and 3810 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 20:37:24,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:26,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:26,710 INFO L93 Difference]: Finished difference Result 6529 states and 9386 transitions. [2023-11-23 20:37:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:37:26,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 244 [2023-11-23 20:37:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:26,757 INFO L225 Difference]: With dead ends: 6529 [2023-11-23 20:37:26,757 INFO L226 Difference]: Without dead ends: 3937 [2023-11-23 20:37:26,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:26,788 INFO L413 NwaCegarLoop]: 1858 mSDtfsCounter, 1873 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 3632 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:26,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 3632 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-11-23 20:37:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2023-11-23 20:37:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3913. [2023-11-23 20:37:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 2399 states have (on average 1.3163818257607336) internal successors, (3158), 2420 states have internal predecessors, (3158), 1230 states have call successors, (1230), 282 states have call predecessors, (1230), 281 states have return successors, (1226), 1221 states have call predecessors, (1226), 1226 states have call successors, (1226) [2023-11-23 20:37:27,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 5614 transitions. [2023-11-23 20:37:27,243 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 5614 transitions. Word has length 244 [2023-11-23 20:37:27,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:27,245 INFO L495 AbstractCegarLoop]: Abstraction has 3913 states and 5614 transitions. [2023-11-23 20:37:27,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 20:37:27,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 5614 transitions. [2023-11-23 20:37:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-11-23 20:37:27,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:27,257 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2023-11-23 20:37:27,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:37:27,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 20:37:27,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:27,259 INFO L85 PathProgramCache]: Analyzing trace with hash -576135306, now seen corresponding path program 1 times [2023-11-23 20:37:27,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:27,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640200038] [2023-11-23 20:37:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:27,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2023-11-23 20:37:28,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:28,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640200038] [2023-11-23 20:37:28,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640200038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:28,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:28,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:37:28,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782378841] [2023-11-23 20:37:28,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:28,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:37:28,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:37:28,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:37:28,371 INFO L87 Difference]: Start difference. First operand 3913 states and 5614 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 20:37:30,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:33,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:35,586 INFO L93 Difference]: Finished difference Result 3919 states and 5619 transitions. [2023-11-23 20:37:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:37:35,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 265 [2023-11-23 20:37:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:35,628 INFO L225 Difference]: With dead ends: 3919 [2023-11-23 20:37:35,628 INFO L226 Difference]: Without dead ends: 3917 [2023-11-23 20:37:35,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:37:35,633 INFO L413 NwaCegarLoop]: 1785 mSDtfsCounter, 1960 mSDsluCounter, 3559 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 5344 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:35,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 5344 Invalid, 732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 730 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2023-11-23 20:37:35,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3917 states. [2023-11-23 20:37:35,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3917 to 3917. [2023-11-23 20:37:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3917 states, 2402 states have (on average 1.3159866777685263) internal successors, (3161), 2423 states have internal predecessors, (3161), 1230 states have call successors, (1230), 283 states have call predecessors, (1230), 282 states have return successors, (1226), 1221 states have call predecessors, (1226), 1226 states have call successors, (1226) [2023-11-23 20:37:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3917 states to 3917 states and 5617 transitions. [2023-11-23 20:37:36,044 INFO L78 Accepts]: Start accepts. Automaton has 3917 states and 5617 transitions. Word has length 265 [2023-11-23 20:37:36,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:36,049 INFO L495 AbstractCegarLoop]: Abstraction has 3917 states and 5617 transitions. [2023-11-23 20:37:36,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-23 20:37:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand 3917 states and 5617 transitions. [2023-11-23 20:37:36,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-11-23 20:37:36,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:36,062 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:37:36,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:37:36,063 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 20:37:36,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:36,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1253891248, now seen corresponding path program 1 times [2023-11-23 20:37:36,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:36,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973514390] [2023-11-23 20:37:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:36,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2023-11-23 20:37:36,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:37:36,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973514390] [2023-11-23 20:37:36,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973514390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:36,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:36,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:36,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783201718] [2023-11-23 20:37:36,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:36,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:36,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:37:36,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:36,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:36,579 INFO L87 Difference]: Start difference. First operand 3917 states and 5617 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 20:37:39,400 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 [] [2023-11-23 20:37:40,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:40,128 INFO L93 Difference]: Finished difference Result 8150 states and 11521 transitions. [2023-11-23 20:37:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:37:40,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 283 [2023-11-23 20:37:40,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:40,165 INFO L225 Difference]: With dead ends: 8150 [2023-11-23 20:37:40,166 INFO L226 Difference]: Without dead ends: 4290 [2023-11-23 20:37:40,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:40,192 INFO L413 NwaCegarLoop]: 1844 mSDtfsCounter, 786 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 3591 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:40,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 3591 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-23 20:37:40,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4290 states. [2023-11-23 20:37:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4290 to 4260. [2023-11-23 20:37:40,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 2582 states have (on average 1.2877614252517429) internal successors, (3325), 2614 states have internal predecessors, (3325), 1298 states have call successors, (1298), 378 states have call predecessors, (1298), 377 states have return successors, (1294), 1277 states have call predecessors, (1294), 1294 states have call successors, (1294) [2023-11-23 20:37:40,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 5917 transitions. [2023-11-23 20:37:40,531 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 5917 transitions. Word has length 283 [2023-11-23 20:37:40,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:40,531 INFO L495 AbstractCegarLoop]: Abstraction has 4260 states and 5917 transitions. [2023-11-23 20:37:40,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 20:37:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 5917 transitions. [2023-11-23 20:37:40,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-23 20:37:40,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:40,541 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2023-11-23 20:37:40,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:37:40,542 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 20:37:40,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:40,543 INFO L85 PathProgramCache]: Analyzing trace with hash -702193178, now seen corresponding path program 1 times [2023-11-23 20:37:40,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:37:40,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893634679] [2023-11-23 20:37:40,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:40,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:37:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat