./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-rc-nuvoton-cir.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5 --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 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:49:25,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:49:25,652 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-21 19:49:25,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:49:25,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:49:25,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:49:25,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:49:25,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:49:25,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:49:25,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:49:25,725 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:49:25,726 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:49:25,727 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:49:25,729 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:49:25,730 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:49:25,731 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:49:25,731 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:49:25,732 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:49:25,732 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:49:25,733 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:49:25,734 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:49:25,735 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:49:25,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:49:25,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:49:25,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:49:25,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:49:25,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:49:25,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:49:25,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:49:25,741 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:49:25,742 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:49:25,743 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:49:25,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:49:25,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:49:25,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:49:25,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:49:25,745 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:49:25,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:49:25,747 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:49:25,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:49:25,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:49:25,752 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:49:25,752 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:49:25,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:49:25,754 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_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a [2023-11-21 19:49:26,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:49:26,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:49:26,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:49:26,154 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:49:26,154 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:49:26,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2023-11-21 19:49:30,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:49:30,886 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:49:30,887 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2023-11-21 19:49:30,956 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/data/c653c75a5/67bd33597c2043ee81944dae5f21a0ce/FLAGebd637fb5 [2023-11-21 19:49:30,981 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/data/c653c75a5/67bd33597c2043ee81944dae5f21a0ce [2023-11-21 19:49:30,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:49:30,990 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:49:30,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:49:30,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:49:31,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:49:31,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:49:30" (1/1) ... [2023-11-21 19:49:31,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48102b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:31, skipping insertion in model container [2023-11-21 19:49:31,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:49:30" (1/1) ... [2023-11-21 19:49:31,198 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:49:33,743 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_fe7855a4-1190-489a-8912-7b55ab6b6adf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196376,196389] [2023-11-21 19:49:33,749 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_fe7855a4-1190-489a-8912-7b55ab6b6adf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196545,196558] [2023-11-21 19:49:33,751 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_fe7855a4-1190-489a-8912-7b55ab6b6adf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196712,196725] [2023-11-21 19:49:33,752 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_fe7855a4-1190-489a-8912-7b55ab6b6adf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196880,196893] [2023-11-21 19:49:33,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:49:33,817 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:49:34,040 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [3610] [2023-11-21 19:49:34,043 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [3618] [2023-11-21 19:49:34,332 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_fe7855a4-1190-489a-8912-7b55ab6b6adf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196376,196389] [2023-11-21 19:49:34,333 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_fe7855a4-1190-489a-8912-7b55ab6b6adf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196545,196558] [2023-11-21 19:49:34,333 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_fe7855a4-1190-489a-8912-7b55ab6b6adf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196712,196725] [2023-11-21 19:49:34,334 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_fe7855a4-1190-489a-8912-7b55ab6b6adf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i[196880,196893] [2023-11-21 19:49:34,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:49:34,463 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:49:34,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34 WrapperNode [2023-11-21 19:49:34,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:49:34,466 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:49:34,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:49:34,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:49:34,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34" (1/1) ... [2023-11-21 19:49:34,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34" (1/1) ... [2023-11-21 19:49:34,815 INFO L138 Inliner]: procedures = 289, calls = 1189, calls flagged for inlining = 114, calls inlined = 94, statements flattened = 2656 [2023-11-21 19:49:34,816 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:49:34,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:49:34,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:49:34,817 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:49:34,830 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34" (1/1) ... [2023-11-21 19:49:34,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34" (1/1) ... [2023-11-21 19:49:34,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34" (1/1) ... [2023-11-21 19:49:34,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34" (1/1) ... [2023-11-21 19:49:35,095 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34" (1/1) ... [2023-11-21 19:49:35,111 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34" (1/1) ... [2023-11-21 19:49:35,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34" (1/1) ... [2023-11-21 19:49:35,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34" (1/1) ... [2023-11-21 19:49:35,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:49:35,231 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:49:35,231 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:49:35,232 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:49:35,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34" (1/1) ... [2023-11-21 19:49:35,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:49:35,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:35,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:49:35,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7855a4-1190-489a-8912-7b55ab6b6adf/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:49:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-21 19:49:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-21 19:49:35,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-21 19:49:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-21 19:49:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-21 19:49:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-21 19:49:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2023-11-21 19:49:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2023-11-21 19:49:35,329 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_efm_disable [2023-11-21 19:49:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_efm_disable [2023-11-21 19:49:35,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-21 19:49:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-21 19:49:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2023-11-21 19:49:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2023-11-21 19:49:35,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 19:49:35,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 19:49:35,333 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2023-11-21 19:49:35,334 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2023-11-21 19:49:35,334 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_wake_reg_read [2023-11-21 19:49:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_wake_reg_read [2023-11-21 19:49:35,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-21 19:49:35,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-21 19:49:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-21 19:49:35,338 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-21 19:49:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_clear_tx_fifo [2023-11-21 19:49:35,339 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_clear_tx_fifo [2023-11-21 19:49:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-21 19:49:35,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-21 19:49:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure ir_raw_event_handle [2023-11-21 19:49:35,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_raw_event_handle [2023-11-21 19:49:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-21 19:49:35,340 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-21 19:49:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure rc_unregister_device [2023-11-21 19:49:35,340 INFO L138 BoogieDeclarations]: Found implementation of procedure rc_unregister_device [2023-11-21 19:49:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_clear_cir_wake_fifo [2023-11-21 19:49:35,341 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_clear_cir_wake_fifo [2023-11-21 19:49:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:49:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_process_rx_ir_data [2023-11-21 19:49:35,341 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_process_rx_ir_data [2023-11-21 19:49:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:49:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-21 19:49:35,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-21 19:49:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cr_write [2023-11-21 19:49:35,342 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cr_write [2023-11-21 19:49:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_remove [2023-11-21 19:49:35,343 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_remove [2023-11-21 19:49:35,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_47 [2023-11-21 19:49:35,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_47 [2023-11-21 19:49:35,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_45 [2023-11-21 19:49:35,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_45 [2023-11-21 19:49:35,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-21 19:49:35,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-21 19:49:35,344 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-21 19:49:35,345 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-21 19:49:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:49:35,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:49:35,347 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_regs_init [2023-11-21 19:49:35,347 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_regs_init [2023-11-21 19:49:35,347 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-21 19:49:35,348 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-21 19:49:35,348 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-21 19:49:35,348 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-21 19:49:35,349 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_tx_inactive [2023-11-21 19:49:35,349 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_tx_inactive [2023-11-21 19:49:35,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2023-11-21 19:49:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2023-11-21 19:49:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_clear_cir_fifo [2023-11-21 19:49:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_clear_cir_fifo [2023-11-21 19:49:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-21 19:49:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-21 19:49:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2023-11-21 19:49:35,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2023-11-21 19:49:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-21 19:49:35,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-21 19:49:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-21 19:49:35,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-21 19:49:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_reg_read [2023-11-21 19:49:35,353 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_reg_read [2023-11-21 19:49:35,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_nvt_lock_of_nvt_dev [2023-11-21 19:49:35,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_nvt_lock_of_nvt_dev [2023-11-21 19:49:35,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-21 19:49:35,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-21 19:49:35,355 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_get_rx_ir_data [2023-11-21 19:49:35,355 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_get_rx_ir_data [2023-11-21 19:49:35,355 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-21 19:49:35,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-21 19:49:35,355 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2023-11-21 19:49:35,355 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2023-11-21 19:49:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 19:49:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_reg_write [2023-11-21 19:49:35,356 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_reg_write [2023-11-21 19:49:35,356 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2023-11-21 19:49:35,356 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2023-11-21 19:49:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-21 19:49:35,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-21 19:49:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_set_cir_iren [2023-11-21 19:49:35,357 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_set_cir_iren [2023-11-21 19:49:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:49:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-21 19:49:35,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-21 19:49:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-21 19:49:35,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-21 19:49:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-21 19:49:35,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-21 19:49:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_set_reg_bit [2023-11-21 19:49:35,360 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_set_reg_bit [2023-11-21 19:49:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-11-21 19:49:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-11-21 19:49:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-21 19:49:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-21 19:49:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_wake_regs_init [2023-11-21 19:49:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_wake_regs_init [2023-11-21 19:49:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:49:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cr_read [2023-11-21 19:49:35,363 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cr_read [2023-11-21 19:49:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_enable_wake [2023-11-21 19:49:35,363 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_enable_wake [2023-11-21 19:49:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2023-11-21 19:49:35,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2023-11-21 19:49:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-21 19:49:35,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-21 19:49:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:49:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-21 19:49:35,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-21 19:49:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:49:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-21 19:49:35,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-21 19:49:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:49:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_wake_reg_write [2023-11-21 19:49:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_wake_reg_write [2023-11-21 19:49:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_efm_enable [2023-11-21 19:49:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_efm_enable [2023-11-21 19:49:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_disable_cir [2023-11-21 19:49:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_disable_cir [2023-11-21 19:49:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2023-11-21 19:49:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2023-11-21 19:49:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_select_logical_dev [2023-11-21 19:49:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_select_logical_dev [2023-11-21 19:49:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-21 19:49:35,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-21 19:49:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-21 19:49:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-21 19:49:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2023-11-21 19:49:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2023-11-21 19:49:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_shutdown [2023-11-21 19:49:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_shutdown [2023-11-21 19:49:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-21 19:49:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-21 19:49:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_drvdata [2023-11-21 19:49:35,384 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_drvdata [2023-11-21 19:49:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:49:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-11-21 19:49:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-11-21 19:49:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2023-11-21 19:49:35,386 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2023-11-21 19:49:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-21 19:49:35,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-21 19:49:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:49:35,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:49:36,037 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:49:36,043 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:49:36,585 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-21 19:49:41,013 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-21 19:49:41,149 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:49:42,021 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:49:42,021 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 19:49:42,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:49:42 BoogieIcfgContainer [2023-11-21 19:49:42,024 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:49:42,026 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:49:42,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:49:42,030 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:49:42,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:49:30" (1/3) ... [2023-11-21 19:49:42,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7d95bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:49:42, skipping insertion in model container [2023-11-21 19:49:42,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:34" (2/3) ... [2023-11-21 19:49:42,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7d95bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:49:42, skipping insertion in model container [2023-11-21 19:49:42,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:49:42" (3/3) ... [2023-11-21 19:49:42,033 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2023-11-21 19:49:42,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:49:42,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-21 19:49:42,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:49:42,138 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;@32a4ff70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:49:42,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-21 19:49:42,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 1073 states, 551 states have (on average 1.2032667876588021) internal successors, (663), 564 states have internal predecessors, (663), 447 states have call successors, (447), 73 states have call predecessors, (447), 72 states have return successors, (443), 442 states have call predecessors, (443), 443 states have call successors, (443) [2023-11-21 19:49:42,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-21 19:49:42,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:42,162 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:42,162 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)] === [2023-11-21 19:49:42,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:42,167 INFO L85 PathProgramCache]: Analyzing trace with hash 14252257, now seen corresponding path program 1 times [2023-11-21 19:49:42,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:42,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836520903] [2023-11-21 19:49:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:42,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-21 19:49:42,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:42,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836520903] [2023-11-21 19:49:42,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836520903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:42,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:42,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:49:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501303671] [2023-11-21 19:49:42,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:42,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:49:42,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:42,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:49:42,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:49:42,968 INFO L87 Difference]: Start difference. First operand has 1073 states, 551 states have (on average 1.2032667876588021) internal successors, (663), 564 states have internal predecessors, (663), 447 states have call successors, (447), 73 states have call predecessors, (447), 72 states have return successors, (443), 442 states have call predecessors, (443), 443 states have call successors, (443) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 19:49:45,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:49:47,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:49:49,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:49:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:50,055 INFO L93 Difference]: Finished difference Result 3153 states and 4642 transitions. [2023-11-21 19:49:50,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:49:50,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2023-11-21 19:49:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:50,093 INFO L225 Difference]: With dead ends: 3153 [2023-11-21 19:49:50,094 INFO L226 Difference]: Without dead ends: 2078 [2023-11-21 19:49:50,106 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 [2023-11-21 19:49:50,110 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 1489 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:50,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 2818 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 268 Invalid, 3 Unknown, 0 Unchecked, 6.7s Time] [2023-11-21 19:49:50,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2023-11-21 19:49:50,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2074. [2023-11-21 19:49:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 1068 states have (on average 1.1919475655430711) internal successors, (1273), 1092 states have internal predecessors, (1273), 862 states have call successors, (862), 142 states have call predecessors, (862), 141 states have return successors, (859), 857 states have call predecessors, (859), 859 states have call successors, (859) [2023-11-21 19:49:50,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2994 transitions. [2023-11-21 19:49:50,472 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2994 transitions. Word has length 47 [2023-11-21 19:49:50,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:50,473 INFO L495 AbstractCegarLoop]: Abstraction has 2074 states and 2994 transitions. [2023-11-21 19:49:50,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 19:49:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2994 transitions. [2023-11-21 19:49:50,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-21 19:49:50,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:50,479 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:50,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:49:50,480 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)] === [2023-11-21 19:49:50,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:50,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1309790299, now seen corresponding path program 1 times [2023-11-21 19:49:50,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:50,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252210808] [2023-11-21 19:49:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:50,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-21 19:49:50,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252210808] [2023-11-21 19:49:50,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252210808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:50,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:50,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:49:50,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62811951] [2023-11-21 19:49:50,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:50,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:49:50,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:50,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:49:50,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:49:50,830 INFO L87 Difference]: Start difference. First operand 2074 states and 2994 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 19:49:53,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:49:55,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:49:55,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:55,771 INFO L93 Difference]: Finished difference Result 3882 states and 5583 transitions. [2023-11-21 19:49:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:49:55,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 56 [2023-11-21 19:49:55,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:55,791 INFO L225 Difference]: With dead ends: 3882 [2023-11-21 19:49:55,791 INFO L226 Difference]: Without dead ends: 1815 [2023-11-21 19:49:55,804 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 [2023-11-21 19:49:55,806 INFO L413 NwaCegarLoop]: 1415 mSDtfsCounter, 537 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:55,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 2781 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 318 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2023-11-21 19:49:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2023-11-21 19:49:55,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1794. [2023-11-21 19:49:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 980 states have (on average 1.223469387755102) internal successors, (1199), 1015 states have internal predecessors, (1199), 676 states have call successors, (676), 136 states have call predecessors, (676), 135 states have return successors, (673), 669 states have call predecessors, (673), 673 states have call successors, (673) [2023-11-21 19:49:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2548 transitions. [2023-11-21 19:49:55,969 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2548 transitions. Word has length 56 [2023-11-21 19:49:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:55,970 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2548 transitions. [2023-11-21 19:49:55,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 19:49:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2548 transitions. [2023-11-21 19:49:55,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-21 19:49:55,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:55,986 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:55,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:49:55,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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)] === [2023-11-21 19:49:55,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:55,990 INFO L85 PathProgramCache]: Analyzing trace with hash -47670274, now seen corresponding path program 1 times [2023-11-21 19:49:55,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:55,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582236031] [2023-11-21 19:49:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:55,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-21 19:49:56,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:56,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582236031] [2023-11-21 19:49:56,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582236031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:56,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:56,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:49:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110707038] [2023-11-21 19:49:56,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:56,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:49:56,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:49:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:56,562 INFO L87 Difference]: Start difference. First operand 1794 states and 2548 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-21 19:49:59,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:01,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:03,410 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 [] [2023-11-21 19:50:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:03,504 INFO L93 Difference]: Finished difference Result 1800 states and 2553 transitions. [2023-11-21 19:50:03,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:50:03,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 85 [2023-11-21 19:50:03,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:03,524 INFO L225 Difference]: With dead ends: 1800 [2023-11-21 19:50:03,524 INFO L226 Difference]: Without dead ends: 1798 [2023-11-21 19:50:03,526 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 [2023-11-21 19:50:03,527 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1506 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 4184 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:03,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 4184 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 3 Unknown, 0 Unchecked, 6.7s Time] [2023-11-21 19:50:03,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2023-11-21 19:50:03,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1798. [2023-11-21 19:50:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 983 states have (on average 1.2227873855544251) internal successors, (1202), 1018 states have internal predecessors, (1202), 676 states have call successors, (676), 137 states have call predecessors, (676), 136 states have return successors, (673), 669 states have call predecessors, (673), 673 states have call successors, (673) [2023-11-21 19:50:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2551 transitions. [2023-11-21 19:50:03,750 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2551 transitions. Word has length 85 [2023-11-21 19:50:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:03,752 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2551 transitions. [2023-11-21 19:50:03,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-21 19:50:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2551 transitions. [2023-11-21 19:50:03,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-21 19:50:03,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:03,759 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-21 19:50:03,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:50:03,760 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)] === [2023-11-21 19:50:03,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:03,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1829310977, now seen corresponding path program 1 times [2023-11-21 19:50:03,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:03,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190158399] [2023-11-21 19:50:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:03,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-21 19:50:04,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:04,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190158399] [2023-11-21 19:50:04,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190158399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:04,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:04,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:50:04,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927281283] [2023-11-21 19:50:04,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:04,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:50:04,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:04,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:50:04,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:50:04,253 INFO L87 Difference]: Start difference. First operand 1798 states and 2551 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 19:50:06,985 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 [] [2023-11-21 19:50:08,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:11,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:11,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:11,087 INFO L93 Difference]: Finished difference Result 1804 states and 2556 transitions. [2023-11-21 19:50:11,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:50:11,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 90 [2023-11-21 19:50:11,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:11,102 INFO L225 Difference]: With dead ends: 1804 [2023-11-21 19:50:11,102 INFO L226 Difference]: Without dead ends: 1802 [2023-11-21 19:50:11,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:50:11,105 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 1501 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 4187 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:11,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 4187 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 3 Unknown, 0 Unchecked, 6.6s Time] [2023-11-21 19:50:11,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2023-11-21 19:50:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1802. [2023-11-21 19:50:11,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 986 states have (on average 1.2221095334685599) internal successors, (1205), 1021 states have internal predecessors, (1205), 676 states have call successors, (676), 138 states have call predecessors, (676), 137 states have return successors, (673), 669 states have call predecessors, (673), 673 states have call successors, (673) [2023-11-21 19:50:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2554 transitions. [2023-11-21 19:50:11,322 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2554 transitions. Word has length 90 [2023-11-21 19:50:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:11,325 INFO L495 AbstractCegarLoop]: Abstraction has 1802 states and 2554 transitions. [2023-11-21 19:50:11,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 19:50:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2554 transitions. [2023-11-21 19:50:11,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-21 19:50:11,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:11,328 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:50:11,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:50:11,329 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)] === [2023-11-21 19:50:11,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:11,330 INFO L85 PathProgramCache]: Analyzing trace with hash -526513665, now seen corresponding path program 1 times [2023-11-21 19:50:11,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:11,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277413944] [2023-11-21 19:50:11,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:11,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-21 19:50:11,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:11,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277413944] [2023-11-21 19:50:11,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277413944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:11,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:11,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:50:11,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20182769] [2023-11-21 19:50:11,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:11,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:50:11,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:50:11,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:50:11,561 INFO L87 Difference]: Start difference. First operand 1802 states and 2554 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-21 19:50:14,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:16,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:18,484 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 [] [2023-11-21 19:50:18,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:18,505 INFO L93 Difference]: Finished difference Result 4872 states and 6893 transitions. [2023-11-21 19:50:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:50:18,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 102 [2023-11-21 19:50:18,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:18,528 INFO L225 Difference]: With dead ends: 4872 [2023-11-21 19:50:18,528 INFO L226 Difference]: Without dead ends: 3077 [2023-11-21 19:50:18,537 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 [2023-11-21 19:50:18,538 INFO L413 NwaCegarLoop]: 1411 mSDtfsCounter, 1430 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:18,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 2802 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 279 Invalid, 3 Unknown, 0 Unchecked, 6.7s Time] [2023-11-21 19:50:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2023-11-21 19:50:18,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 3046. [2023-11-21 19:50:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 1650 states have (on average 1.2078787878787878) internal successors, (1993), 1702 states have internal predecessors, (1993), 1157 states have call successors, (1157), 237 states have call predecessors, (1157), 236 states have return successors, (1156), 1145 states have call predecessors, (1156), 1154 states have call successors, (1156) [2023-11-21 19:50:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4306 transitions. [2023-11-21 19:50:18,847 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4306 transitions. Word has length 102 [2023-11-21 19:50:18,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:18,847 INFO L495 AbstractCegarLoop]: Abstraction has 3046 states and 4306 transitions. [2023-11-21 19:50:18,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-21 19:50:18,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4306 transitions. [2023-11-21 19:50:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-21 19:50:18,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:18,855 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-21 19:50:18,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:50:18,855 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)] === [2023-11-21 19:50:18,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:18,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1636573538, now seen corresponding path program 1 times [2023-11-21 19:50:18,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:18,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716376877] [2023-11-21 19:50:18,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:18,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-21 19:50:19,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:19,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716376877] [2023-11-21 19:50:19,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716376877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:19,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:19,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:50:19,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88589099] [2023-11-21 19:50:19,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:19,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:50:19,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:19,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:50:19,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:50:19,301 INFO L87 Difference]: Start difference. First operand 3046 states and 4306 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)