./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:39:41,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:39:41,696 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 20:39:41,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:39:41,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:39:41,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:39:41,743 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:39:41,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:39:41,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:39:41,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:39:41,746 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:39:41,747 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:39:41,747 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:39:41,748 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:39:41,748 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:39:41,749 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:39:41,749 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:39:41,750 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:39:41,751 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:39:41,751 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:39:41,752 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:39:41,753 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:39:41,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:39:41,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:39:41,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:39:41,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:39:41,756 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:39:41,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:39:41,757 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:39:41,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:39:41,758 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:39:41,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:39:41,759 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:39:41,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:39:41,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:39:41,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:39:41,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:39:41,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:39:41,762 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:39:41,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:39:41,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:39:41,773 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:39:41,774 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:39:41,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:39:41,774 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_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a [2023-11-23 20:39:42,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:39:42,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:39:42,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:39:42,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:39:42,106 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:39:42,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2023-11-23 20:39:45,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:39:45,845 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:39:45,845 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2023-11-23 20:39:45,896 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/data/4d210a929/6e33fa592d124cc0bf3f5ce31eb80c15/FLAG9660f1663 [2023-11-23 20:39:45,914 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/data/4d210a929/6e33fa592d124cc0bf3f5ce31eb80c15 [2023-11-23 20:39:45,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:39:45,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:39:45,925 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:39:45,925 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:39:45,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:39:45,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:39:45" (1/1) ... [2023-11-23 20:39:45,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea39307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:45, skipping insertion in model container [2023-11-23 20:39:45,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:39:45" (1/1) ... [2023-11-23 20:39:46,066 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:39:47,814 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_5b70a12b-785c-43c3-a929-af4f639ae47e/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] [2023-11-23 20:39:47,819 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_5b70a12b-785c-43c3-a929-af4f639ae47e/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] [2023-11-23 20:39:47,820 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_5b70a12b-785c-43c3-a929-af4f639ae47e/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] [2023-11-23 20:39:47,821 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_5b70a12b-785c-43c3-a929-af4f639ae47e/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] [2023-11-23 20:39:47,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:39:47,876 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:39:47,987 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [3610] [2023-11-23 20:39:47,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [3618] [2023-11-23 20:39:48,233 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_5b70a12b-785c-43c3-a929-af4f639ae47e/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] [2023-11-23 20:39:48,233 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_5b70a12b-785c-43c3-a929-af4f639ae47e/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] [2023-11-23 20:39:48,234 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/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] [2023-11-23 20:39:48,234 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/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] [2023-11-23 20:39:48,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:39:48,338 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:39:48,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48 WrapperNode [2023-11-23 20:39:48,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:39:48,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:39:48,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:39:48,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:39:48,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,621 INFO L138 Inliner]: procedures = 289, calls = 1189, calls flagged for inlining = 114, calls inlined = 94, statements flattened = 2656 [2023-11-23 20:39:48,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:39:48,622 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:39:48,622 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:39:48,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:39:48,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,659 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:39:48,899 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:39:48,899 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:39:48,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:39:48,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:39:48,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:39:48,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:39:48,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b70a12b-785c-43c3-a929-af4f639ae47e/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:39:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 20:39:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 20:39:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 20:39:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 20:39:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-23 20:39:48,983 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-23 20:39:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2023-11-23 20:39:48,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2023-11-23 20:39:48,983 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_efm_disable [2023-11-23 20:39:48,983 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_efm_disable [2023-11-23 20:39:48,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 20:39:48,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 20:39:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2023-11-23 20:39:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2023-11-23 20:39:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 20:39:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 20:39:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_len [2023-11-23 20:39:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_len [2023-11-23 20:39:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_wake_reg_read [2023-11-23 20:39:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_wake_reg_read [2023-11-23 20:39:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2023-11-23 20:39:48,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2023-11-23 20:39:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-23 20:39:48,990 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-23 20:39:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_clear_tx_fifo [2023-11-23 20:39:48,990 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_clear_tx_fifo [2023-11-23 20:39:48,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 20:39:48,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 20:39:48,992 INFO L130 BoogieDeclarations]: Found specification of procedure ir_raw_event_handle [2023-11-23 20:39:48,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_raw_event_handle [2023-11-23 20:39:48,992 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-23 20:39:48,993 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-23 20:39:48,993 INFO L130 BoogieDeclarations]: Found specification of procedure rc_unregister_device [2023-11-23 20:39:48,993 INFO L138 BoogieDeclarations]: Found implementation of procedure rc_unregister_device [2023-11-23 20:39:48,993 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_clear_cir_wake_fifo [2023-11-23 20:39:48,993 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_clear_cir_wake_fifo [2023-11-23 20:39:48,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:39:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_process_rx_ir_data [2023-11-23 20:39:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_process_rx_ir_data [2023-11-23 20:39:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:39:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 20:39:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 20:39:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cr_write [2023-11-23 20:39:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cr_write [2023-11-23 20:39:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_remove [2023-11-23 20:39:48,995 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_remove [2023-11-23 20:39:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_47 [2023-11-23 20:39:48,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_47 [2023-11-23 20:39:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_45 [2023-11-23 20:39:48,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_45 [2023-11-23 20:39:48,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 20:39:48,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 20:39:48,996 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 20:39:48,997 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 20:39:48,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:39:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:39:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_regs_init [2023-11-23 20:39:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_regs_init [2023-11-23 20:39:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 20:39:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 20:39:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-23 20:39:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-23 20:39:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_tx_inactive [2023-11-23 20:39:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_tx_inactive [2023-11-23 20:39:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2023-11-23 20:39:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2023-11-23 20:39:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_clear_cir_fifo [2023-11-23 20:39:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_clear_cir_fifo [2023-11-23 20:39:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-23 20:39:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-23 20:39:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2023-11-23 20:39:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2023-11-23 20:39:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 20:39:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 20:39:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2023-11-23 20:39:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2023-11-23 20:39:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_reg_read [2023-11-23 20:39:49,002 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_reg_read [2023-11-23 20:39:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_nvt_lock_of_nvt_dev [2023-11-23 20:39:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_nvt_lock_of_nvt_dev [2023-11-23 20:39:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-23 20:39:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-23 20:39:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_get_rx_ir_data [2023-11-23 20:39:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_get_rx_ir_data [2023-11-23 20:39:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-23 20:39:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-23 20:39:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_resource [2023-11-23 20:39:49,004 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_resource [2023-11-23 20:39:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:39:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_reg_write [2023-11-23 20:39:49,004 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_reg_write [2023-11-23 20:39:49,004 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_resource_valid [2023-11-23 20:39:49,004 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_resource_valid [2023-11-23 20:39:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 20:39:49,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 20:39:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_set_cir_iren [2023-11-23 20:39:49,005 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_set_cir_iren [2023-11-23 20:39:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:39:49,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2023-11-23 20:39:49,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2023-11-23 20:39:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-11-23 20:39:49,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-11-23 20:39:49,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-11-23 20:39:49,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-11-23 20:39:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_set_reg_bit [2023-11-23 20:39:49,007 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_set_reg_bit [2023-11-23 20:39:49,007 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-11-23 20:39:49,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-11-23 20:39:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 20:39:49,008 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 20:39:49,008 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_wake_regs_init [2023-11-23 20:39:49,009 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_wake_regs_init [2023-11-23 20:39:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:39:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cr_read [2023-11-23 20:39:49,009 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cr_read [2023-11-23 20:39:49,009 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_enable_wake [2023-11-23 20:39:49,010 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_enable_wake [2023-11-23 20:39:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2023-11-23 20:39:49,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2023-11-23 20:39:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 20:39:49,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2023-11-23 20:39:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:39:49,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-11-23 20:39:49,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-11-23 20:39:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:39:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 20:39:49,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 20:39:49,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:39:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_cir_wake_reg_write [2023-11-23 20:39:49,012 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_cir_wake_reg_write [2023-11-23 20:39:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_efm_enable [2023-11-23 20:39:49,012 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_efm_enable [2023-11-23 20:39:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_disable_cir [2023-11-23 20:39:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_disable_cir [2023-11-23 20:39:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_start [2023-11-23 20:39:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_start [2023-11-23 20:39:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_select_logical_dev [2023-11-23 20:39:49,013 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_select_logical_dev [2023-11-23 20:39:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 20:39:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 20:39:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2023-11-23 20:39:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2023-11-23 20:39:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2023-11-23 20:39:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2023-11-23 20:39:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure nvt_shutdown [2023-11-23 20:39:49,021 INFO L138 BoogieDeclarations]: Found implementation of procedure nvt_shutdown [2023-11-23 20:39:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-23 20:39:49,022 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-23 20:39:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_get_drvdata [2023-11-23 20:39:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_get_drvdata [2023-11-23 20:39:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:39:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2023-11-23 20:39:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2023-11-23 20:39:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure pnp_port_valid [2023-11-23 20:39:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure pnp_port_valid [2023-11-23 20:39:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-11-23 20:39:49,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-11-23 20:39:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:39:49,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:39:49,506 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:39:49,509 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:39:49,988 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 20:39:53,729 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2023-11-23 20:39:53,878 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:39:54,660 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:39:54,660 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:39:54,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:39:54 BoogieIcfgContainer [2023-11-23 20:39:54,663 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:39:54,666 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:39:54,666 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:39:54,669 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:39:54,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:39:45" (1/3) ... [2023-11-23 20:39:54,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b255453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:39:54, skipping insertion in model container [2023-11-23 20:39:54,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (2/3) ... [2023-11-23 20:39:54,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b255453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:39:54, skipping insertion in model container [2023-11-23 20:39:54,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:39:54" (3/3) ... [2023-11-23 20:39:54,674 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2023-11-23 20:39:54,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:39:54,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-23 20:39:54,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:39:54,804 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;@3ff3718c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:39:54,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 20:39:54,817 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) [2023-11-23 20:39:54,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 20:39:54,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:39:54,834 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] [2023-11-23 20:39:54,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 20:39:54,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:39:54,843 INFO L85 PathProgramCache]: Analyzing trace with hash 14252257, now seen corresponding path program 1 times [2023-11-23 20:39:54,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:39:54,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677950758] [2023-11-23 20:39:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:39:54,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:39:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:39:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 20:39:55,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:39:55,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677950758] [2023-11-23 20:39:55,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677950758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:39:55,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:39:55,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:39:55,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996773481] [2023-11-23 20:39:55,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:39:55,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:39:55,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:39:55,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:39:55,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:39:55,605 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) [2023-11-23 20:39:58,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:00,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:02,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:02,586 INFO L93 Difference]: Finished difference Result 3153 states and 4642 transitions. [2023-11-23 20:40:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:02,589 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 [2023-11-23 20:40:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:02,621 INFO L225 Difference]: With dead ends: 3153 [2023-11-23 20:40:02,621 INFO L226 Difference]: Without dead ends: 2078 [2023-11-23 20:40:02,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:02,636 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 1489 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s 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, 6.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:02,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 2818 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 268 Invalid, 3 Unknown, 0 Unchecked, 6.6s Time] [2023-11-23 20:40:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2023-11-23 20:40:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2074. [2023-11-23 20:40:02,877 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) [2023-11-23 20:40:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2994 transitions. [2023-11-23 20:40:02,901 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2994 transitions. Word has length 47 [2023-11-23 20:40:02,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:02,902 INFO L495 AbstractCegarLoop]: Abstraction has 2074 states and 2994 transitions. [2023-11-23 20:40:02,902 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) [2023-11-23 20:40:02,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2994 transitions. [2023-11-23 20:40:02,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 20:40:02,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:02,908 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] [2023-11-23 20:40:02,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:40:02,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 20:40:02,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:02,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1309790299, now seen corresponding path program 1 times [2023-11-23 20:40:02,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:02,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57985126] [2023-11-23 20:40:02,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:02,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 20:40:03,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:03,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57985126] [2023-11-23 20:40:03,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57985126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:03,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:03,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:03,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725762593] [2023-11-23 20:40:03,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:03,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:03,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:03,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:03,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:03,157 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) [2023-11-23 20:40:05,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:07,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:08,006 INFO L93 Difference]: Finished difference Result 3882 states and 5583 transitions. [2023-11-23 20:40:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:08,007 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 [2023-11-23 20:40:08,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:08,024 INFO L225 Difference]: With dead ends: 3882 [2023-11-23 20:40:08,025 INFO L226 Difference]: Without dead ends: 1815 [2023-11-23 20:40:08,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:08,036 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 [2023-11-23 20:40:08,037 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] [2023-11-23 20:40:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2023-11-23 20:40:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1794. [2023-11-23 20:40:08,175 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) [2023-11-23 20:40:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2548 transitions. [2023-11-23 20:40:08,193 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2548 transitions. Word has length 56 [2023-11-23 20:40:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:08,194 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2548 transitions. [2023-11-23 20:40:08,194 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) [2023-11-23 20:40:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2548 transitions. [2023-11-23 20:40:08,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 20:40:08,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:08,200 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] [2023-11-23 20:40:08,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:40:08,200 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)] === [2023-11-23 20:40:08,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:08,201 INFO L85 PathProgramCache]: Analyzing trace with hash -47670274, now seen corresponding path program 1 times [2023-11-23 20:40:08,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:08,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101588050] [2023-11-23 20:40:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:08,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 20:40:08,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:08,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101588050] [2023-11-23 20:40:08,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101588050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:08,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:08,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:40:08,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849964132] [2023-11-23 20:40:08,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:08,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:40:08,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:08,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:40:08,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:08,889 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) [2023-11-23 20:40:11,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:13,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:15,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:15,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:15,707 INFO L93 Difference]: Finished difference Result 1800 states and 2553 transitions. [2023-11-23 20:40:15,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:40:15,708 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 [2023-11-23 20:40:15,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:15,723 INFO L225 Difference]: With dead ends: 1800 [2023-11-23 20:40:15,723 INFO L226 Difference]: Without dead ends: 1798 [2023-11-23 20:40:15,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:40:15,726 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 1506 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s 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, 6.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:15,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 4184 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 3 Unknown, 0 Unchecked, 6.6s Time] [2023-11-23 20:40:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2023-11-23 20:40:15,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1798. [2023-11-23 20:40:15,864 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) [2023-11-23 20:40:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2551 transitions. [2023-11-23 20:40:15,880 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2551 transitions. Word has length 85 [2023-11-23 20:40:15,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:15,881 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2551 transitions. [2023-11-23 20:40:15,881 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) [2023-11-23 20:40:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2551 transitions. [2023-11-23 20:40:15,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 20:40:15,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:15,887 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] [2023-11-23 20:40:15,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:40:15,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 20:40:15,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:15,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1829310977, now seen corresponding path program 1 times [2023-11-23 20:40:15,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:15,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593552227] [2023-11-23 20:40:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:15,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 20:40:16,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:16,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593552227] [2023-11-23 20:40:16,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593552227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:16,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:16,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:40:16,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294853682] [2023-11-23 20:40:16,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:16,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:40:16,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:16,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:40:16,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:16,389 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) [2023-11-23 20:40:19,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:21,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:23,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:23,193 INFO L93 Difference]: Finished difference Result 1804 states and 2556 transitions. [2023-11-23 20:40:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:40:23,194 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 [2023-11-23 20:40:23,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:23,209 INFO L225 Difference]: With dead ends: 1804 [2023-11-23 20:40:23,210 INFO L226 Difference]: Without dead ends: 1802 [2023-11-23 20:40:23,211 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 [2023-11-23 20:40:23,212 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 [2023-11-23 20:40:23,213 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] [2023-11-23 20:40:23,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2023-11-23 20:40:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1802. [2023-11-23 20:40:23,369 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) [2023-11-23 20:40:23,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2554 transitions. [2023-11-23 20:40:23,386 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2554 transitions. Word has length 90 [2023-11-23 20:40:23,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:23,387 INFO L495 AbstractCegarLoop]: Abstraction has 1802 states and 2554 transitions. [2023-11-23 20:40:23,388 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) [2023-11-23 20:40:23,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2554 transitions. [2023-11-23 20:40:23,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 20:40:23,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:23,391 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] [2023-11-23 20:40:23,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:40:23,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 20:40:23,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:23,392 INFO L85 PathProgramCache]: Analyzing trace with hash -526513665, now seen corresponding path program 1 times [2023-11-23 20:40:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:23,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396552741] [2023-11-23 20:40:23,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:23,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 20:40:23,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:23,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396552741] [2023-11-23 20:40:23,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396552741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:23,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:23,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:23,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734869265] [2023-11-23 20:40:23,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:23,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:23,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:23,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:23,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:23,661 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) [2023-11-23 20:40:26,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:28,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:30,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:30,590 INFO L93 Difference]: Finished difference Result 4872 states and 6893 transitions. [2023-11-23 20:40:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:30,591 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 [2023-11-23 20:40:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:30,618 INFO L225 Difference]: With dead ends: 4872 [2023-11-23 20:40:30,619 INFO L226 Difference]: Without dead ends: 3077 [2023-11-23 20:40:30,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:30,629 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, 6.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:30,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 2802 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 279 Invalid, 3 Unknown, 0 Unchecked, 6.6s Time] [2023-11-23 20:40:30,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2023-11-23 20:40:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 3046. [2023-11-23 20:40:30,919 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) [2023-11-23 20:40:30,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4306 transitions. [2023-11-23 20:40:30,944 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4306 transitions. Word has length 102 [2023-11-23 20:40:30,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:30,944 INFO L495 AbstractCegarLoop]: Abstraction has 3046 states and 4306 transitions. [2023-11-23 20:40:30,946 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) [2023-11-23 20:40:30,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4306 transitions. [2023-11-23 20:40:30,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 20:40:30,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:30,954 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] [2023-11-23 20:40:30,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:40:30,954 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 20:40:30,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:30,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1636573538, now seen corresponding path program 1 times [2023-11-23 20:40:30,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:30,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553096134] [2023-11-23 20:40:30,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:30,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-23 20:40:31,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:31,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553096134] [2023-11-23 20:40:31,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553096134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:31,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:31,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:40:31,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995934431] [2023-11-23 20:40:31,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:31,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:40:31,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:31,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:40:31,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:31,319 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) [2023-11-23 20:40:33,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:36,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:38,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:40:38,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:38,189 INFO L93 Difference]: Finished difference Result 3052 states and 4311 transitions. [2023-11-23 20:40:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:40:38,190 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 104 [2023-11-23 20:40:38,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:38,215 INFO L225 Difference]: With dead ends: 3052 [2023-11-23 20:40:38,215 INFO L226 Difference]: Without dead ends: 3050 [2023-11-23 20:40:38,218 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 [2023-11-23 20:40:38,219 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 1497 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 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 [2023-11-23 20:40:38,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 4187 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 3 Unknown, 0 Unchecked, 6.6s Time] [2023-11-23 20:40:38,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2023-11-23 20:40:38,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 3050. [2023-11-23 20:40:38,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3050 states, 1653 states have (on average 1.207501512401694) internal successors, (1996), 1705 states have internal predecessors, (1996), 1157 states have call successors, (1157), 238 states have call predecessors, (1157), 237 states have return successors, (1156), 1145 states have call predecessors, (1156), 1154 states have call successors, (1156) [2023-11-23 20:40:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3050 states to 3050 states and 4309 transitions. [2023-11-23 20:40:38,566 INFO L78 Accepts]: Start accepts. Automaton has 3050 states and 4309 transitions. Word has length 104 [2023-11-23 20:40:38,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:38,567 INFO L495 AbstractCegarLoop]: Abstraction has 3050 states and 4309 transitions. [2023-11-23 20:40:38,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-23 20:40:38,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3050 states and 4309 transitions. [2023-11-23 20:40:38,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 20:40:38,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:38,570 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1] [2023-11-23 20:40:38,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 20:40:38,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-23 20:40:38,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1892362527, now seen corresponding path program 1 times [2023-11-23 20:40:38,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:38,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186019229] [2023-11-23 20:40:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:38,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 20:40:38,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:38,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186019229] [2023-11-23 20:40:38,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186019229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:38,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:38,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:40:38,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646373625] [2023-11-23 20:40:38,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:38,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:40:38,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:38,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:40:38,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:38,864 INFO L87 Difference]: Start difference. First operand 3050 states and 4309 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, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 20:40:41,575 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 []