./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 9bd2c7ff 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_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/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_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:21:16,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:21:16,757 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:21:16,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:21:16,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:21:16,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:21:16,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:21:16,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:21:16,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:21:16,820 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:21:16,821 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:21:16,821 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:21:16,822 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:21:16,824 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:21:16,825 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:21:16,826 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:21:16,826 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:21:16,827 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:21:16,827 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:21:16,828 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:21:16,828 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:21:16,829 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:21:16,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:21:16,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:21:16,832 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:21:16,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:21:16,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:21:16,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:21:16,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:21:16,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:21:16,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:21:16,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:21:16,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:21:16,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:16,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:21:16,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:21:16,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:21:16,838 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:21:16,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:21:16,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:21:16,839 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:21:16,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:21:16,840 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_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a [2023-11-19 05:21:17,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:21:17,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:21:17,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:21:17,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:21:17,187 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:21:17,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2023-11-19 05:21:20,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:21:20,909 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:21:20,912 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2023-11-19 05:21:20,981 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/data/0c3abd26b/61f2f11a6677448c96178c229f10091f/FLAGb5d795e3e [2023-11-19 05:21:20,998 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/data/0c3abd26b/61f2f11a6677448c96178c229f10091f [2023-11-19 05:21:21,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:21:21,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:21:21,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:21,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:21:21,011 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:21:21,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:20" (1/1) ... [2023-11-19 05:21:21,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249294b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21, skipping insertion in model container [2023-11-19 05:21:21,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:20" (1/1) ... [2023-11-19 05:21:21,153 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:21:23,368 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_fffabde4-ca10-4e49-be34-a4586ef159c1/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] [2023-11-19 05:21:23,373 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_fffabde4-ca10-4e49-be34-a4586ef159c1/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] [2023-11-19 05:21:23,374 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_fffabde4-ca10-4e49-be34-a4586ef159c1/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] [2023-11-19 05:21:23,375 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_fffabde4-ca10-4e49-be34-a4586ef159c1/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] [2023-11-19 05:21:23,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:23,425 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:21:23,542 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [3610] [2023-11-19 05:21:23,545 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [3618] [2023-11-19 05:21:23,706 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_fffabde4-ca10-4e49-be34-a4586ef159c1/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] [2023-11-19 05:21:23,706 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_fffabde4-ca10-4e49-be34-a4586ef159c1/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] [2023-11-19 05:21:23,707 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_fffabde4-ca10-4e49-be34-a4586ef159c1/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] [2023-11-19 05:21:23,708 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_fffabde4-ca10-4e49-be34-a4586ef159c1/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] [2023-11-19 05:21:23,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:23,788 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:21:23,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23 WrapperNode [2023-11-19 05:21:23,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:23,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:23,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:21:23,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:21:23,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23" (1/1) ... [2023-11-19 05:21:23,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23" (1/1) ... [2023-11-19 05:21:24,137 INFO L138 Inliner]: procedures = 289, calls = 1189, calls flagged for inlining = 114, calls inlined = 94, statements flattened = 2656 [2023-11-19 05:21:24,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:24,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:21:24,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:21:24,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:21:24,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23" (1/1) ... [2023-11-19 05:21:24,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23" (1/1) ... [2023-11-19 05:21:24,193 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23" (1/1) ... [2023-11-19 05:21:24,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23" (1/1) ... [2023-11-19 05:21:24,311 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23" (1/1) ... [2023-11-19 05:21:24,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23" (1/1) ... [2023-11-19 05:21:24,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23" (1/1) ... [2023-11-19 05:21:24,397 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23" (1/1) ... [2023-11-19 05:21:24,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:21:24,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:21:24,434 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:21:24,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:21:24,437 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23" (1/1) ... [2023-11-19 05:21:24,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:24,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:24,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:21:24,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffabde4-ca10-4e49-be34-a4586ef159c1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:21:24,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 05:21:24,521 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 05:21:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 05:21:24,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 05:21:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 05:21:24,522 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 05:21:24,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2023-11-19 05:21:24,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2023-11-19 05:21:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_efm_disable [2023-11-19 05:21:24,523 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_efm_disable [2023-11-19 05:21:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-19 05:21:24,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-19 05:21:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2023-11-19 05:21:24,524 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2023-11-19 05:21:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:21:24,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:21:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2023-11-19 05:21:24,524 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2023-11-19 05:21:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_wake_reg_read [2023-11-19 05:21:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_wake_reg_read [2023-11-19 05:21:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-19 05:21:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-19 05:21:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-19 05:21:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-19 05:21:24,526 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_clear_tx_fifo [2023-11-19 05:21:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_clear_tx_fifo [2023-11-19 05:21:24,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-19 05:21:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-19 05:21:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure ir_raw_event_handle [2023-11-19 05:21:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_raw_event_handle [2023-11-19 05:21:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:21:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:21:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure rc_unregister_device [2023-11-19 05:21:24,528 INFO L138 BoogieDeclarations]: Found implementation of procedure rc_unregister_device [2023-11-19 05:21:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_clear_cir_wake_fifo [2023-11-19 05:21:24,528 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_clear_cir_wake_fifo [2023-11-19 05:21:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:21:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_process_rx_ir_data [2023-11-19 05:21:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_process_rx_ir_data [2023-11-19 05:21:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:21:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-19 05:21:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-19 05:21:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cr_write [2023-11-19 05:21:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cr_write [2023-11-19 05:21:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_remove [2023-11-19 05:21:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_remove [2023-11-19 05:21:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_47 [2023-11-19 05:21:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_47 [2023-11-19 05:21:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_45 [2023-11-19 05:21:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_45 [2023-11-19 05:21:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 05:21:24,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 05:21:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:21:24,531 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:21:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:21:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:21:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_regs_init [2023-11-19 05:21:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_regs_init [2023-11-19 05:21:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:21:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:21:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:21:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:21:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_tx_inactive [2023-11-19 05:21:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_tx_inactive [2023-11-19 05:21:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2023-11-19 05:21:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2023-11-19 05:21:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_clear_cir_fifo [2023-11-19 05:21:24,534 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_clear_cir_fifo [2023-11-19 05:21:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-19 05:21:24,534 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-19 05:21:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2023-11-19 05:21:24,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2023-11-19 05:21:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-19 05:21:24,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-19 05:21:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-19 05:21:24,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-19 05:21:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_reg_read [2023-11-19 05:21:24,535 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_reg_read [2023-11-19 05:21:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_nvt_lock_of_nvt_dev [2023-11-19 05:21:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_nvt_lock_of_nvt_dev [2023-11-19 05:21:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 05:21:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 05:21:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_get_rx_ir_data [2023-11-19 05:21:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_get_rx_ir_data [2023-11-19 05:21:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 05:21:24,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 05:21:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2023-11-19 05:21:24,537 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2023-11-19 05:21:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:21:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_reg_write [2023-11-19 05:21:24,538 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_reg_write [2023-11-19 05:21:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2023-11-19 05:21:24,538 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2023-11-19 05:21:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-19 05:21:24,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-19 05:21:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_set_cir_iren [2023-11-19 05:21:24,539 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_set_cir_iren [2023-11-19 05:21:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:21:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-19 05:21:24,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-19 05:21:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-19 05:21:24,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-19 05:21:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-19 05:21:24,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-19 05:21:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_set_reg_bit [2023-11-19 05:21:24,540 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_set_reg_bit [2023-11-19 05:21:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-11-19 05:21:24,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-11-19 05:21:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:21:24,541 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:21:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_wake_regs_init [2023-11-19 05:21:24,541 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_wake_regs_init [2023-11-19 05:21:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:21:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cr_read [2023-11-19 05:21:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cr_read [2023-11-19 05:21:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_enable_wake [2023-11-19 05:21:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_enable_wake [2023-11-19 05:21:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2023-11-19 05:21:24,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2023-11-19 05:21:24,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-19 05:21:24,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-19 05:21:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:21:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-19 05:21:24,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-19 05:21:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:21:24,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-19 05:21:24,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-19 05:21:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:21:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_wake_reg_write [2023-11-19 05:21:24,544 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_wake_reg_write [2023-11-19 05:21:24,544 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_efm_enable [2023-11-19 05:21:24,545 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_efm_enable [2023-11-19 05:21:24,545 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_disable_cir [2023-11-19 05:21:24,545 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_disable_cir [2023-11-19 05:21:24,545 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2023-11-19 05:21:24,545 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2023-11-19 05:21:24,545 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_select_logical_dev [2023-11-19 05:21:24,546 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_select_logical_dev [2023-11-19 05:21:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-19 05:21:24,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-19 05:21:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-19 05:21:24,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-19 05:21:24,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2023-11-19 05:21:24,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2023-11-19 05:21:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_shutdown [2023-11-19 05:21:24,547 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_shutdown [2023-11-19 05:21:24,547 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-19 05:21:24,547 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-19 05:21:24,548 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_drvdata [2023-11-19 05:21:24,548 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_drvdata [2023-11-19 05:21:24,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:21:24,548 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-11-19 05:21:24,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-11-19 05:21:24,548 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2023-11-19 05:21:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2023-11-19 05:21:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-19 05:21:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-19 05:21:24,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:21:24,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:21:25,018 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:21:25,022 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:21:25,631 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 05:21:29,609 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-19 05:21:29,796 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:21:30,695 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:21:30,696 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:21:30,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:30 BoogieIcfgContainer [2023-11-19 05:21:30,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:21:30,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:21:30,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:21:30,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:21:30,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:20" (1/3) ... [2023-11-19 05:21:30,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5101f8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:30, skipping insertion in model container [2023-11-19 05:21:30,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:23" (2/3) ... [2023-11-19 05:21:30,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5101f8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:30, skipping insertion in model container [2023-11-19 05:21:30,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:30" (3/3) ... [2023-11-19 05:21:30,733 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2023-11-19 05:21:30,792 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:21:30,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-19 05:21:30,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:21:30,937 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;@625d809d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:21:30,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 05:21:30,954 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) [2023-11-19 05:21:30,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 05:21:30,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:30,977 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] [2023-11-19 05:21:30,978 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)] === [2023-11-19 05:21:30,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:30,988 INFO L85 PathProgramCache]: Analyzing trace with hash 614579681, now seen corresponding path program 1 times [2023-11-19 05:21:31,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:31,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665617745] [2023-11-19 05:21:31,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:31,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 05:21:31,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:31,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665617745] [2023-11-19 05:21:31,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665617745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:31,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:31,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694078675] [2023-11-19 05:21:31,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:31,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:31,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:31,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:31,948 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) [2023-11-19 05:21:35,013 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 [] [2023-11-19 05:21:37,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:39,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:39,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:39,220 INFO L93 Difference]: Finished difference Result 3153 states and 4642 transitions. [2023-11-19 05:21:39,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:39,223 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 [2023-11-19 05:21:39,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:39,280 INFO L225 Difference]: With dead ends: 3153 [2023-11-19 05:21:39,280 INFO L226 Difference]: Without dead ends: 2078 [2023-11-19 05:21:39,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:39,304 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 1489 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:39,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 2818 Invalid, 274 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 268 Invalid, 3 Unknown, 0 Unchecked, 6.8s Time] [2023-11-19 05:21:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2023-11-19 05:21:39,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2074. [2023-11-19 05:21:39,739 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) [2023-11-19 05:21:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2994 transitions. [2023-11-19 05:21:39,770 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2994 transitions. Word has length 47 [2023-11-19 05:21:39,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:39,772 INFO L495 AbstractCegarLoop]: Abstraction has 2074 states and 2994 transitions. [2023-11-19 05:21:39,772 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) [2023-11-19 05:21:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2994 transitions. [2023-11-19 05:21:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 05:21:39,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:39,788 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] [2023-11-19 05:21:39,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:21:39,789 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)] === [2023-11-19 05:21:39,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash 562883488, now seen corresponding path program 1 times [2023-11-19 05:21:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:39,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366495344] [2023-11-19 05:21:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 05:21:40,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:40,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366495344] [2023-11-19 05:21:40,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366495344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:40,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:40,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:40,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620955541] [2023-11-19 05:21:40,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:40,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:40,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:40,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:40,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:40,240 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) [2023-11-19 05:21:43,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:45,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:45,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:45,252 INFO L93 Difference]: Finished difference Result 3882 states and 5583 transitions. [2023-11-19 05:21:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:45,253 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 [2023-11-19 05:21:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:45,270 INFO L225 Difference]: With dead ends: 3882 [2023-11-19 05:21:45,270 INFO L226 Difference]: Without dead ends: 1815 [2023-11-19 05:21:45,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:45,282 INFO L413 NwaCegarLoop]: 1411 mSDtfsCounter, 537 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:45,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 2777 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 316 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2023-11-19 05:21:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2023-11-19 05:21:45,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1794. [2023-11-19 05:21:45,477 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) [2023-11-19 05:21:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2548 transitions. [2023-11-19 05:21:45,500 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2548 transitions. Word has length 56 [2023-11-19 05:21:45,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:45,502 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2548 transitions. [2023-11-19 05:21:45,502 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) [2023-11-19 05:21:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2548 transitions. [2023-11-19 05:21:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 05:21:45,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:45,510 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] [2023-11-19 05:21:45,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:21:45,516 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)] === [2023-11-19 05:21:45,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 142272026, now seen corresponding path program 1 times [2023-11-19 05:21:45,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:45,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412434389] [2023-11-19 05:21:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:45,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-19 05:21:46,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:46,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412434389] [2023-11-19 05:21:46,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412434389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:46,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:46,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:21:46,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324409695] [2023-11-19 05:21:46,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:46,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:21:46,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:46,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:21:46,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:46,084 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) [2023-11-19 05:21:48,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:50,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:52,961 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 [] [2023-11-19 05:21:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:53,066 INFO L93 Difference]: Finished difference Result 1800 states and 2553 transitions. [2023-11-19 05:21:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:21:53,067 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 [2023-11-19 05:21:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:53,092 INFO L225 Difference]: With dead ends: 1800 [2023-11-19 05:21:53,098 INFO L226 Difference]: Without dead ends: 1798 [2023-11-19 05:21:53,100 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 [2023-11-19 05:21:53,104 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 [2023-11-19 05:21:53,105 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] [2023-11-19 05:21:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2023-11-19 05:21:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1798. [2023-11-19 05:21:53,354 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) [2023-11-19 05:21:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2551 transitions. [2023-11-19 05:21:53,376 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2551 transitions. Word has length 85 [2023-11-19 05:21:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:53,377 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2551 transitions. [2023-11-19 05:21:53,378 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) [2023-11-19 05:21:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2551 transitions. [2023-11-19 05:21:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 05:21:53,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:53,384 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] [2023-11-19 05:21:53,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:21:53,384 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)] === [2023-11-19 05:21:53,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:53,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1095406947, now seen corresponding path program 1 times [2023-11-19 05:21:53,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:53,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933276444] [2023-11-19 05:21:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:53,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-19 05:21:53,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:53,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933276444] [2023-11-19 05:21:53,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933276444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:53,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:53,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:21:53,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729766353] [2023-11-19 05:21:53,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:53,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:21:53,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:21:53,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:53,887 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) [2023-11-19 05:21:56,808 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 [] [2023-11-19 05:21:58,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:22:00,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:22:00,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:00,956 INFO L93 Difference]: Finished difference Result 1804 states and 2556 transitions. [2023-11-19 05:22:00,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:22:00,958 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 [2023-11-19 05:22:00,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:00,980 INFO L225 Difference]: With dead ends: 1804 [2023-11-19 05:22:00,980 INFO L226 Difference]: Without dead ends: 1802 [2023-11-19 05:22:00,982 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 [2023-11-19 05:22:00,989 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 1501 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s 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, 6.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:00,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 4187 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 3 Unknown, 0 Unchecked, 6.7s Time] [2023-11-19 05:22:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2023-11-19 05:22:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1802. [2023-11-19 05:22:01,233 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) [2023-11-19 05:22:01,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2554 transitions. [2023-11-19 05:22:01,255 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2554 transitions. Word has length 90 [2023-11-19 05:22:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:01,256 INFO L495 AbstractCegarLoop]: Abstraction has 1802 states and 2554 transitions. [2023-11-19 05:22:01,257 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) [2023-11-19 05:22:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2554 transitions. [2023-11-19 05:22:01,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 05:22:01,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:01,261 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] [2023-11-19 05:22:01,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:22:01,262 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)] === [2023-11-19 05:22:01,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:01,263 INFO L85 PathProgramCache]: Analyzing trace with hash 98508890, now seen corresponding path program 1 times [2023-11-19 05:22:01,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:01,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867664549] [2023-11-19 05:22:01,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:01,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 05:22:01,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:01,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867664549] [2023-11-19 05:22:01,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867664549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:01,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:01,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:01,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388445036] [2023-11-19 05:22:01,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:01,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:01,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:01,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:01,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:01,558 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) [2023-11-19 05:22:04,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:22:06,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:22:08,770 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 [] [2023-11-19 05:22:08,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:08,799 INFO L93 Difference]: Finished difference Result 4872 states and 6893 transitions. [2023-11-19 05:22:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:08,800 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 [2023-11-19 05:22:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:08,828 INFO L225 Difference]: With dead ends: 4872 [2023-11-19 05:22:08,829 INFO L226 Difference]: Without dead ends: 3077 [2023-11-19 05:22:08,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:08,839 INFO L413 NwaCegarLoop]: 1411 mSDtfsCounter, 1430 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s 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, 6.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:08,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 2802 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 279 Invalid, 3 Unknown, 0 Unchecked, 6.9s Time] [2023-11-19 05:22:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2023-11-19 05:22:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 3046. [2023-11-19 05:22:09,107 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) [2023-11-19 05:22:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4306 transitions. [2023-11-19 05:22:09,131 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4306 transitions. Word has length 102 [2023-11-19 05:22:09,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:09,132 INFO L495 AbstractCegarLoop]: Abstraction has 3046 states and 4306 transitions. [2023-11-19 05:22:09,132 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) [2023-11-19 05:22:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4306 transitions. [2023-11-19 05:22:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 05:22:09,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:09,140 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] [2023-11-19 05:22:09,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:22:09,140 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)] === [2023-11-19 05:22:09,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:09,141 INFO L85 PathProgramCache]: Analyzing trace with hash -836127955, now seen corresponding path program 1 times [2023-11-19 05:22:09,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:09,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662387755] [2023-11-19 05:22:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:09,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:09,569 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-19 05:22:09,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:09,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662387755] [2023-11-19 05:22:09,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662387755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:09,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:09,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:22:09,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542715048] [2023-11-19 05:22:09,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:09,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:22:09,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:09,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:22:09,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:22:09,572 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) [2023-11-19 05:22:12,387 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 [] [2023-11-19 05:22:14,395 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 []