./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_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --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 ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:13:20,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:13:20,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:13:20,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:13:20,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:13:20,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:13:20,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:13:20,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:13:20,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:13:20,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:13:20,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:13:20,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:13:20,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:13:20,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:13:20,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:13:20,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:13:20,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:13:20,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:13:20,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:13:20,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:13:20,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:13:20,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:13:20,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:13:20,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:13:20,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:13:20,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:13:20,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:13:20,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:13:20,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:13:20,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:13:20,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:13:20,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:13:20,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:13:20,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:13:20,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:13:20,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:13:20,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:13:20,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:13:20,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:13:20,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:13:20,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:13:20,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:13:20,931 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:13:20,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:13:20,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:13:20,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:13:20,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:13:20,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:13:20,933 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:13:20,933 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:13:20,934 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:13:20,934 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:13:20,934 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:13:20,934 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:13:20,935 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:13:20,935 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:13:20,935 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:13:20,936 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:13:20,936 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:13:20,936 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:13:20,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:13:20,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:13:20,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:13:20,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:13:20,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:13:20,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:13:20,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:13:20,938 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:13:20,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:13:20,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:13:20,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:13:20,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:13:20,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:13:20,940 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:13:20,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:13:20,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:13:20,941 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:13:20,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:13:20,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:13:20,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:13:20,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 [2022-11-22 01:13:21,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:13:21,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:13:21,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:13:21,243 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:13:21,244 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:13:21,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2022-11-22 01:13:24,349 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:13:25,068 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:13:25,068 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2022-11-22 01:13:25,144 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/data/143dc840e/5151839c598c44e795072df4ca80c47c/FLAG5e84c59d2 [2022-11-22 01:13:25,163 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/data/143dc840e/5151839c598c44e795072df4ca80c47c [2022-11-22 01:13:25,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:13:25,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:13:25,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:13:25,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:13:25,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:13:25,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:13:25" (1/1) ... [2022-11-22 01:13:25,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4700b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:25, skipping insertion in model container [2022-11-22 01:13:25,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:13:25" (1/1) ... [2022-11-22 01:13:25,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:13:25,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:13:29,152 WARN L237 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_c152a4b4-d951-4669-a06d-56f528a36eee/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2022-11-22 01:13:29,156 WARN L237 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_c152a4b4-d951-4669-a06d-56f528a36eee/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2022-11-22 01:13:29,156 WARN L237 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_c152a4b4-d951-4669-a06d-56f528a36eee/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2022-11-22 01:13:29,157 WARN L237 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_c152a4b4-d951-4669-a06d-56f528a36eee/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2022-11-22 01:13:29,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:13:29,214 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:13:29,725 WARN L237 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_c152a4b4-d951-4669-a06d-56f528a36eee/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2022-11-22 01:13:29,726 WARN L237 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_c152a4b4-d951-4669-a06d-56f528a36eee/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2022-11-22 01:13:29,727 WARN L237 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_c152a4b4-d951-4669-a06d-56f528a36eee/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2022-11-22 01:13:29,727 WARN L237 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_c152a4b4-d951-4669-a06d-56f528a36eee/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2022-11-22 01:13:29,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:13:29,979 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:13:29,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29 WrapperNode [2022-11-22 01:13:29,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:13:29,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:13:29,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:13:29,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:13:29,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29" (1/1) ... [2022-11-22 01:13:30,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29" (1/1) ... [2022-11-22 01:13:30,473 INFO L138 Inliner]: procedures = 553, calls = 3861, calls flagged for inlining = 272, calls inlined = 248, statements flattened = 9211 [2022-11-22 01:13:30,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:13:30,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:13:30,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:13:30,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:13:30,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29" (1/1) ... [2022-11-22 01:13:30,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29" (1/1) ... [2022-11-22 01:13:30,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29" (1/1) ... [2022-11-22 01:13:30,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29" (1/1) ... [2022-11-22 01:13:30,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29" (1/1) ... [2022-11-22 01:13:30,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29" (1/1) ... [2022-11-22 01:13:30,794 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29" (1/1) ... [2022-11-22 01:13:30,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29" (1/1) ... [2022-11-22 01:13:30,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:13:30,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:13:30,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:13:30,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:13:30,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29" (1/1) ... [2022-11-22 01:13:30,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:13:30,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:13:30,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:13:30,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c152a4b4-d951-4669-a06d-56f528a36eee/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:13:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_evict_inode [2022-11-22 01:13:30,965 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_evict_inode [2022-11-22 01:13:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2022-11-22 01:13:30,965 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2022-11-22 01:13:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:13:30,965 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:13:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_unlink [2022-11-22 01:13:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_unlink [2022-11-22 01:13:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_get_inode [2022-11-22 01:13:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_get_inode [2022-11-22 01:13:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-22 01:13:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-22 01:13:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:13:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:13:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_lseek [2022-11-22 01:13:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_lseek [2022-11-22 01:13:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure do_expire_wait [2022-11-22 01:13:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure do_expire_wait [2022-11-22 01:13:30,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:13:30,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 01:13:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-22 01:13:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-22 01:13:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2022-11-22 01:13:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2022-11-22 01:13:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2022-11-22 01:13:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2022-11-22 01:13:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure current_kernel_time [2022-11-22 01:13:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure current_kernel_time [2022-11-22 01:13:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_indirect [2022-11-22 01:13:30,970 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_indirect [2022-11-22 01:13:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2022-11-22 01:13:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2022-11-22 01:13:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_clear_managed [2022-11-22 01:13:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_clear_managed [2022-11-22 01:13:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure from_kgid_munged [2022-11-22 01:13:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kgid_munged [2022-11-22 01:13:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure follow_down_one [2022-11-22 01:13:30,971 INFO L138 BoogieDeclarations]: Found implementation of procedure follow_down_one [2022-11-22 01:13:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_show_options [2022-11-22 01:13:30,972 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_show_options [2022-11-22 01:13:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_48 [2022-11-22 01:13:30,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_48 [2022-11-22 01:13:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_57 [2022-11-22 01:13:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_57 [2022-11-22 01:13:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure __autofs4_add_expiring [2022-11-22 01:13:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __autofs4_add_expiring [2022-11-22 01:13:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-22 01:13:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_wait [2022-11-22 01:13:30,973 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_wait [2022-11-22 01:13:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl [2022-11-22 01:13:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl [2022-11-22 01:13:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:13:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:13:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-22 01:13:30,974 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-22 01:13:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:13:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:13:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:13:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure d_count [2022-11-22 01:13:30,975 INFO L138 BoogieDeclarations]: Found implementation of procedure d_count [2022-11-22 01:13:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-22 01:13:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-22 01:13:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2022-11-22 01:13:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2022-11-22 01:13:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-22 01:13:30,976 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-22 01:13:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 01:13:30,977 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 01:13:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-22 01:13:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-22 01:13:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_oz_mode [2022-11-22 01:13:30,978 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_oz_mode [2022-11-22 01:13:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_do_expire_multi [2022-11-22 01:13:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_do_expire_multi [2022-11-22 01:13:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2022-11-22 01:13:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2022-11-22 01:13:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure __task_pid_nr_ns [2022-11-22 01:13:30,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __task_pid_nr_ns [2022-11-22 01:13:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 01:13:30,980 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 01:13:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_54 [2022-11-22 01:13:30,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_54 [2022-11-22 01:13:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_sbi [2022-11-22 01:13:30,980 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_sbi [2022-11-22 01:13:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:13:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-22 01:13:30,981 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-22 01:13:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_siglock_of_sighand_struct [2022-11-22 01:13:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_siglock_of_sighand_struct [2022-11-22 01:13:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_new_ino [2022-11-22 01:13:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_new_ino [2022-11-22 01:13:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure simple_empty [2022-11-22 01:13:30,982 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_empty [2022-11-22 01:13:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:13:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:13:30,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:13:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_can_expire [2022-11-22 01:13:30,983 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_can_expire [2022-11-22 01:13:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_ino [2022-11-22 01:13:30,983 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_ino [2022-11-22 01:13:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:13:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2022-11-22 01:13:30,983 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2022-11-22 01:13:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_open [2022-11-22 01:13:30,985 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_open [2022-11-22 01:13:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 01:13:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 01:13:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_rmdir [2022-11-22 01:13:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_rmdir [2022-11-22 01:13:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount [2022-11-22 01:13:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount [2022-11-22 01:13:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl_exit [2022-11-22 01:13:30,991 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl_exit [2022-11-22 01:13:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-22 01:13:30,996 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-22 01:13:30,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 01:13:30,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 01:13:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_open [2022-11-22 01:13:30,997 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_open [2022-11-22 01:13:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-22 01:13:30,997 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-22 01:13:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure clear_nlink [2022-11-22 01:13:30,997 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_nlink [2022-11-22 01:13:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_trigger [2022-11-22 01:13:30,998 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_trigger [2022-11-22 01:13:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:13:30,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 01:13:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:13:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2022-11-22 01:13:30,998 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2022-11-22 01:13:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:13:30,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:13:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:13:30,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:13:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-22 01:13:30,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-22 01:13:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 01:13:30,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 01:13:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2022-11-22 01:13:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-22 01:13:30,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-22 01:13:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:13:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:13:31,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:13:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:13:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 01:13:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure simple_positive [2022-11-22 01:13:31,000 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_positive [2022-11-22 01:13:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-22 01:13:31,000 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-22 01:13:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure path_get [2022-11-22 01:13:31,001 INFO L138 BoogieDeclarations]: Found implementation of procedure path_get [2022-11-22 01:13:31,001 INFO L130 BoogieDeclarations]: Found specification of procedure dget_dlock [2022-11-22 01:13:31,001 INFO L138 BoogieDeclarations]: Found implementation of procedure dget_dlock [2022-11-22 01:13:31,001 INFO L130 BoogieDeclarations]: Found specification of procedure d_lookup [2022-11-22 01:13:31,001 INFO L138 BoogieDeclarations]: Found implementation of procedure d_lookup [2022-11-22 01:13:31,001 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-22 01:13:31,001 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-22 01:13:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 01:13:31,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 01:13:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2022-11-22 01:13:31,002 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2022-11-22 01:13:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-22 01:13:31,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-22 01:13:31,002 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2022-11-22 01:13:31,002 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2022-11-22 01:13:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_mount [2022-11-22 01:13:31,003 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_mount [2022-11-22 01:13:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_indirect [2022-11-22 01:13:31,003 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_indirect [2022-11-22 01:13:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:13:31,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:13:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_wait [2022-11-22 01:13:31,003 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_wait [2022-11-22 01:13:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-22 01:13:31,004 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-22 01:13:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl [2022-11-22 01:13:31,004 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl [2022-11-22 01:13:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-22 01:13:31,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-22 01:13:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2022-11-22 01:13:31,006 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2022-11-22 01:13:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2022-11-22 01:13:31,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2022-11-22 01:13:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:13:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:13:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait_release [2022-11-22 01:13:31,006 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait_release [2022-11-22 01:13:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:13:31,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:13:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl_unlocked [2022-11-22 01:13:31,007 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl_unlocked [2022-11-22 01:13:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:13:31,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 01:13:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2022-11-22 01:13:31,007 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2022-11-22 01:13:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-22 01:13:31,007 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-22 01:13:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2022-11-22 01:13:31,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2022-11-22 01:13:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_compat_ioctl [2022-11-22 01:13:31,008 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_compat_ioctl [2022-11-22 01:13:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqretry [2022-11-22 01:13:31,008 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqretry [2022-11-22 01:13:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-11-22 01:13:31,008 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-11-22 01:13:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-22 01:13:31,008 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-22 01:13:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_readdir [2022-11-22 01:13:31,009 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_readdir [2022-11-22 01:13:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2022-11-22 01:13:31,009 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2022-11-22 01:13:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 01:13:31,009 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 01:13:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount_tree [2022-11-22 01:13:31,009 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount_tree [2022-11-22 01:13:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-22 01:13:31,009 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-22 01:13:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2022-11-22 01:13:31,010 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2022-11-22 01:13:31,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 01:13:31,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 01:13:31,010 INFO L130 BoogieDeclarations]: Found specification of procedure get_task_pid [2022-11-22 01:13:31,010 INFO L138 BoogieDeclarations]: Found implementation of procedure get_task_pid [2022-11-22 01:13:31,010 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2022-11-22 01:13:31,010 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2022-11-22 01:13:31,010 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_busy [2022-11-22 01:13:31,010 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_busy [2022-11-22 01:13:31,010 INFO L130 BoogieDeclarations]: Found specification of procedure d_unhashed [2022-11-22 01:13:31,011 INFO L138 BoogieDeclarations]: Found implementation of procedure d_unhashed [2022-11-22 01:13:31,011 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-22 01:13:31,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-22 01:13:31,015 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_kill_sb [2022-11-22 01:13:31,015 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_kill_sb [2022-11-22 01:13:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:13:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 01:13:31,016 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 01:13:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2022-11-22 01:13:31,016 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2022-11-22 01:13:31,016 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-22 01:13:31,016 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-22 01:13:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_set_managed [2022-11-22 01:13:31,018 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_set_managed [2022-11-22 01:13:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:13:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2022-11-22 01:13:31,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2022-11-22 01:13:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2022-11-22 01:13:31,018 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2022-11-22 01:13:31,018 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-22 01:13:31,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-22 01:13:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:13:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-22 01:13:31,019 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-22 01:13:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-22 01:13:31,019 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-22 01:13:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure find_autofs_mount [2022-11-22 01:13:31,019 INFO L138 BoogieDeclarations]: Found implementation of procedure find_autofs_mount [2022-11-22 01:13:31,019 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-22 01:13:31,126 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-22 01:13:31,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:13:31,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:13:31,127 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_close [2022-11-22 01:13:31,127 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_close [2022-11-22 01:13:31,127 INFO L130 BoogieDeclarations]: Found specification of procedure ns_of_pid [2022-11-22 01:13:31,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_of_pid [2022-11-22 01:13:31,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 01:13:31,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 01:13:31,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_55 [2022-11-22 01:13:31,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_55 [2022-11-22 01:13:31,128 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-22 01:13:31,128 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-22 01:13:31,128 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_clean_ino [2022-11-22 01:13:31,128 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_clean_ino [2022-11-22 01:13:31,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_49 [2022-11-22 01:13:31,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_49 [2022-11-22 01:13:31,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2022-11-22 01:13:31,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2022-11-22 01:13:31,128 INFO L130 BoogieDeclarations]: Found specification of procedure kern_path_mountpoint [2022-11-22 01:13:31,128 INFO L138 BoogieDeclarations]: Found implementation of procedure kern_path_mountpoint [2022-11-22 01:13:31,129 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_positive_dentry [2022-11-22 01:13:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_positive_dentry [2022-11-22 01:13:31,129 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:13:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:13:31,129 INFO L130 BoogieDeclarations]: Found specification of procedure __managed_dentry_set_managed [2022-11-22 01:13:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __managed_dentry_set_managed [2022-11-22 01:13:31,129 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait [2022-11-22 01:13:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait [2022-11-22 01:13:31,129 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_find_wait [2022-11-22 01:13:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_find_wait [2022-11-22 01:13:31,130 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-22 01:13:31,130 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-22 01:13:31,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2022-11-22 01:13:31,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2022-11-22 01:13:31,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:13:31,130 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_release [2022-11-22 01:13:31,130 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_release [2022-11-22 01:13:31,130 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp_nr [2022-11-22 01:13:31,130 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp_nr [2022-11-22 01:13:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:13:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:13:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2022-11-22 01:13:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2022-11-22 01:13:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_symlink [2022-11-22 01:13:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_symlink [2022-11-22 01:13:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2022-11-22 01:13:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2022-11-22 01:13:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_78 [2022-11-22 01:13:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_78 [2022-11-22 01:13:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2022-11-22 01:13:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2022-11-22 01:13:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-22 01:13:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-22 01:13:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure d_mountpoint [2022-11-22 01:13:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure d_mountpoint [2022-11-22 01:13:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-22 01:13:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-22 01:13:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure have_submounts [2022-11-22 01:13:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure have_submounts [2022-11-22 01:13:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-22 01:13:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-22 01:13:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-22 01:13:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-22 01:13:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-22 01:13:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-22 01:13:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-22 01:13:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-22 01:13:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_prepare_pipe [2022-11-22 01:13:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_prepare_pipe [2022-11-22 01:13:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:13:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:13:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_del_active [2022-11-22 01:13:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_del_active [2022-11-22 01:13:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 01:13:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 01:13:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 01:13:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 01:13:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-22 01:13:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-22 01:13:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:13:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure d_add [2022-11-22 01:13:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure d_add [2022-11-22 01:13:31,135 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_catatonic_mode [2022-11-22 01:13:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_catatonic_mode [2022-11-22 01:13:31,135 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2022-11-22 01:13:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2022-11-22 01:13:31,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:13:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:13:31,135 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-22 01:13:31,135 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2022-11-22 01:13:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2022-11-22 01:13:32,440 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:13:32,445 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:13:32,771 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:13:33,606 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint switch_break: call ULTIMATE.dealloc(~#descriptor~12#1.base, ~#descriptor~12#1.offset);havoc ~#descriptor~12#1.base, ~#descriptor~12#1.offset; [2022-11-22 01:13:41,843 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:13:42,138 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:13:43,882 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:13:43,883 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-22 01:13:43,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:13:43 BoogieIcfgContainer [2022-11-22 01:13:43,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:13:43,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:13:43,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:13:43,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:13:43,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:13:25" (1/3) ... [2022-11-22 01:13:43,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c3c460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:13:43, skipping insertion in model container [2022-11-22 01:13:43,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:13:29" (2/3) ... [2022-11-22 01:13:43,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c3c460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:13:43, skipping insertion in model container [2022-11-22 01:13:43,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:13:43" (3/3) ... [2022-11-22 01:13:43,899 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2022-11-22 01:13:43,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:13:43,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-22 01:13:44,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:13:44,026 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=LoopsAndPotentialCycles, 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;@111bb47e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:13:44,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-22 01:13:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 2633 states, 1548 states have (on average 1.3152454780361758) internal successors, (2036), 1601 states have internal predecessors, (2036), 917 states have call successors, (917), 165 states have call predecessors, (917), 164 states have return successors, (906), 900 states have call predecessors, (906), 906 states have call successors, (906) [2022-11-22 01:13:44,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-11-22 01:13:44,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:13:44,093 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:13:44,093 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 01:13:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:13:44,099 INFO L85 PathProgramCache]: Analyzing trace with hash 523504642, now seen corresponding path program 1 times [2022-11-22 01:13:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:13:44,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962514286] [2022-11-22 01:13:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:13:44,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:13:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:13:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-22 01:13:45,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:13:45,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962514286] [2022-11-22 01:13:45,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962514286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:13:45,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:13:45,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:13:45,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788244768] [2022-11-22 01:13:45,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:13:45,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:13:45,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:13:45,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:13:45,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:13:45,538 INFO L87 Difference]: Start difference. First operand has 2633 states, 1548 states have (on average 1.3152454780361758) internal successors, (2036), 1601 states have internal predecessors, (2036), 917 states have call successors, (917), 165 states have call predecessors, (917), 164 states have return successors, (906), 900 states have call predecessors, (906), 906 states have call successors, (906) Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-22 01:13:48,194 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 [] [2022-11-22 01:13:51,353 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 [] [2022-11-22 01:13:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:13:52,171 INFO L93 Difference]: Finished difference Result 7432 states and 11199 transitions. [2022-11-22 01:13:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:13:52,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 465 [2022-11-22 01:13:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:13:52,222 INFO L225 Difference]: With dead ends: 7432 [2022-11-22 01:13:52,222 INFO L226 Difference]: Without dead ends: 4872 [2022-11-22 01:13:52,248 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 [2022-11-22 01:13:52,251 INFO L413 NwaCegarLoop]: 4806 mSDtfsCounter, 3327 mSDsluCounter, 3390 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 8196 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:13:52,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3331 Valid, 8196 Invalid, 901 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 888 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-22 01:13:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2022-11-22 01:13:52,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4865. [2022-11-22 01:13:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4865 states, 2874 states have (on average 1.3072372999304105) internal successors, (3757), 2967 states have internal predecessors, (3757), 1668 states have call successors, (1668), 320 states have call predecessors, (1668), 319 states have return successors, (1668), 1652 states have call predecessors, (1668), 1664 states have call successors, (1668) [2022-11-22 01:13:52,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4865 states to 4865 states and 7093 transitions. [2022-11-22 01:13:52,607 INFO L78 Accepts]: Start accepts. Automaton has 4865 states and 7093 transitions. Word has length 465 [2022-11-22 01:13:52,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:13:52,609 INFO L495 AbstractCegarLoop]: Abstraction has 4865 states and 7093 transitions. [2022-11-22 01:13:52,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-22 01:13:52,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4865 states and 7093 transitions. [2022-11-22 01:13:52,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-11-22 01:13:52,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:13:52,631 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:13:52,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:13:52,632 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 01:13:52,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:13:52,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1227674561, now seen corresponding path program 1 times [2022-11-22 01:13:52,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:13:52,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415481476] [2022-11-22 01:13:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:13:52,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:13:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:13:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-22 01:13:53,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:13:53,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415481476] [2022-11-22 01:13:53,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415481476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:13:53,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:13:53,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:13:53,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023343386] [2022-11-22 01:13:53,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:13:53,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:13:53,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:13:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:13:53,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:13:53,244 INFO L87 Difference]: Start difference. First operand 4865 states and 7093 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-22 01:13:55,669 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 [] [2022-11-22 01:13:58,632 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 [] [2022-11-22 01:13:59,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:13:59,486 INFO L93 Difference]: Finished difference Result 11506 states and 16713 transitions. [2022-11-22 01:13:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:13:59,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 480 [2022-11-22 01:13:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:13:59,540 INFO L225 Difference]: With dead ends: 11506 [2022-11-22 01:13:59,541 INFO L226 Difference]: Without dead ends: 6730 [2022-11-22 01:13:59,568 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 [2022-11-22 01:13:59,569 INFO L413 NwaCegarLoop]: 4704 mSDtfsCounter, 2996 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 8112 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:13:59,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3000 Valid, 8112 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 880 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-11-22 01:13:59,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6730 states. [2022-11-22 01:13:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6730 to 6703. [2022-11-22 01:13:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6703 states, 3956 states have (on average 1.3043478260869565) internal successors, (5160), 4077 states have internal predecessors, (5160), 2274 states have call successors, (2274), 470 states have call predecessors, (2274), 469 states have return successors, (2278), 2253 states have call predecessors, (2278), 2270 states have call successors, (2278) [2022-11-22 01:14:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6703 states to 6703 states and 9712 transitions. [2022-11-22 01:14:00,018 INFO L78 Accepts]: Start accepts. Automaton has 6703 states and 9712 transitions. Word has length 480 [2022-11-22 01:14:00,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:14:00,020 INFO L495 AbstractCegarLoop]: Abstraction has 6703 states and 9712 transitions. [2022-11-22 01:14:00,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-22 01:14:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6703 states and 9712 transitions. [2022-11-22 01:14:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-11-22 01:14:00,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:14:00,038 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:14:00,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:14:00,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 01:14:00,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:14:00,040 INFO L85 PathProgramCache]: Analyzing trace with hash -988051933, now seen corresponding path program 1 times [2022-11-22 01:14:00,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:14:00,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130850839] [2022-11-22 01:14:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:14:00,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:14:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:14:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-22 01:14:00,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:14:00,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130850839] [2022-11-22 01:14:00,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130850839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:14:00,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:14:00,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:14:00,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208921106] [2022-11-22 01:14:00,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:14:00,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:14:00,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:14:00,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:14:00,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:14:00,730 INFO L87 Difference]: Start difference. First operand 6703 states and 9712 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-22 01:14:03,142 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 [] [2022-11-22 01:14:06,254 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 [] [2022-11-22 01:14:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:14:07,274 INFO L93 Difference]: Finished difference Result 17473 states and 25282 transitions. [2022-11-22 01:14:07,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:14:07,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 480 [2022-11-22 01:14:07,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:14:07,346 INFO L225 Difference]: With dead ends: 17473 [2022-11-22 01:14:07,346 INFO L226 Difference]: Without dead ends: 10859 [2022-11-22 01:14:07,375 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 [2022-11-22 01:14:07,381 INFO L413 NwaCegarLoop]: 4781 mSDtfsCounter, 3227 mSDsluCounter, 3380 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3231 SdHoareTripleChecker+Valid, 8161 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:14:07,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3231 Valid, 8161 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 914 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-22 01:14:07,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10859 states. [2022-11-22 01:14:07,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10859 to 10834. [2022-11-22 01:14:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10834 states, 6410 states have (on average 1.3029641185647425) internal successors, (8352), 6612 states have internal predecessors, (8352), 3636 states have call successors, (3636), 785 states have call predecessors, (3636), 784 states have return successors, (3656), 3598 states have call predecessors, (3656), 3632 states have call successors, (3656) [2022-11-22 01:14:08,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10834 states to 10834 states and 15644 transitions. [2022-11-22 01:14:08,051 INFO L78 Accepts]: Start accepts. Automaton has 10834 states and 15644 transitions. Word has length 480 [2022-11-22 01:14:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:14:08,052 INFO L495 AbstractCegarLoop]: Abstraction has 10834 states and 15644 transitions. [2022-11-22 01:14:08,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-22 01:14:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand 10834 states and 15644 transitions. [2022-11-22 01:14:08,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2022-11-22 01:14:08,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:14:08,065 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:14:08,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:14:08,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 01:14:08,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:14:08,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2124103911, now seen corresponding path program 1 times [2022-11-22 01:14:08,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:14:08,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313709782] [2022-11-22 01:14:08,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:14:08,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:14:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:14:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-22 01:14:08,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:14:08,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313709782] [2022-11-22 01:14:08,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313709782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:14:08,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:14:08,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:14:08,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461997173] [2022-11-22 01:14:08,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:14:08,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:14:08,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:14:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:14:08,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:14:08,800 INFO L87 Difference]: Start difference. First operand 10834 states and 15644 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-22 01:14:11,919 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 [] [2022-11-22 01:14:14,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:14:15,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:14:15,355 INFO L93 Difference]: Finished difference Result 29251 states and 42147 transitions. [2022-11-22 01:14:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:14:15,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 481 [2022-11-22 01:14:15,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:14:15,473 INFO L225 Difference]: With dead ends: 29251 [2022-11-22 01:14:15,473 INFO L226 Difference]: Without dead ends: 18506 [2022-11-22 01:14:15,519 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 [2022-11-22 01:14:15,520 INFO L413 NwaCegarLoop]: 4222 mSDtfsCounter, 3101 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3101 SdHoareTripleChecker+Valid, 7603 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:14:15,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3101 Valid, 7603 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 842 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-22 01:14:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18506 states. [2022-11-22 01:14:16,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18506 to 18482. [2022-11-22 01:14:16,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18482 states, 10925 states have (on average 1.2983066361556064) internal successors, (14184), 11285 states have internal predecessors, (14184), 6163 states have call successors, (6163), 1391 states have call predecessors, (6163), 1390 states have return successors, (6211), 6092 states have call predecessors, (6211), 6159 states have call successors, (6211) [2022-11-22 01:14:16,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18482 states to 18482 states and 26558 transitions. [2022-11-22 01:14:16,609 INFO L78 Accepts]: Start accepts. Automaton has 18482 states and 26558 transitions. Word has length 481 [2022-11-22 01:14:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:14:16,610 INFO L495 AbstractCegarLoop]: Abstraction has 18482 states and 26558 transitions. [2022-11-22 01:14:16,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-22 01:14:16,610 INFO L276 IsEmpty]: Start isEmpty. Operand 18482 states and 26558 transitions. [2022-11-22 01:14:16,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-22 01:14:16,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:14:16,616 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:14:16,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:14:16,617 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 01:14:16,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:14:16,617 INFO L85 PathProgramCache]: Analyzing trace with hash -819194621, now seen corresponding path program 1 times [2022-11-22 01:14:16,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:14:16,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354693491] [2022-11-22 01:14:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:14:16,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:14:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:14:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7660 trivial. 0 not checked. [2022-11-22 01:14:17,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:14:17,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354693491] [2022-11-22 01:14:17,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354693491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:14:17,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:14:17,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:14:17,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655713905] [2022-11-22 01:14:17,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:14:17,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:14:17,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:14:17,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:14:17,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:14:17,081 INFO L87 Difference]: Start difference. First operand 18482 states and 26558 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-22 01:14:19,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:14:22,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:14:24,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:14:25,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:14:25,469 INFO L93 Difference]: Finished difference Result 50315 states and 72176 transitions. [2022-11-22 01:14:25,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:14:25,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 484 [2022-11-22 01:14:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:14:25,659 INFO L225 Difference]: With dead ends: 50315 [2022-11-22 01:14:25,659 INFO L226 Difference]: Without dead ends: 31922 [2022-11-22 01:14:25,736 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 [2022-11-22 01:14:25,737 INFO L413 NwaCegarLoop]: 4179 mSDtfsCounter, 2963 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2965 SdHoareTripleChecker+Valid, 7580 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:14:25,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2965 Valid, 7580 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 820 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2022-11-22 01:14:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31922 states. [2022-11-22 01:14:27,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31922 to 31882. [2022-11-22 01:14:27,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31882 states, 18868 states have (on average 1.297434810260759) internal successors, (24480), 19456 states have internal predecessors, (24480), 10548 states have call successors, (10548), 2463 states have call predecessors, (10548), 2462 states have return successors, (10634), 10402 states have call predecessors, (10634), 10544 states have call successors, (10634) [2022-11-22 01:14:27,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31882 states to 31882 states and 45662 transitions. [2022-11-22 01:14:27,726 INFO L78 Accepts]: Start accepts. Automaton has 31882 states and 45662 transitions. Word has length 484 [2022-11-22 01:14:27,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:14:27,727 INFO L495 AbstractCegarLoop]: Abstraction has 31882 states and 45662 transitions. [2022-11-22 01:14:27,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-22 01:14:27,727 INFO L276 IsEmpty]: Start isEmpty. Operand 31882 states and 45662 transitions. [2022-11-22 01:14:27,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2022-11-22 01:14:27,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:14:27,735 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:14:27,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:14:27,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 01:14:27,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:14:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash -465715934, now seen corresponding path program 1 times [2022-11-22 01:14:27,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:14:27,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407778404] [2022-11-22 01:14:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:14:27,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:14:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:14:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7658 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7658 trivial. 0 not checked. [2022-11-22 01:14:28,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:14:28,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407778404] [2022-11-22 01:14:28,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407778404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:14:28,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:14:28,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:14:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792332038] [2022-11-22 01:14:28,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:14:28,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:14:28,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:14:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:14:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:14:28,725 INFO L87 Difference]: Start difference. First operand 31882 states and 45662 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-22 01:14:31,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:14:34,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:14:36,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:14:36,788 INFO L93 Difference]: Finished difference Result 85722 states and 122568 transitions. [2022-11-22 01:14:36,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:14:36,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 511 [2022-11-22 01:14:36,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:14:37,091 INFO L225 Difference]: With dead ends: 85722 [2022-11-22 01:14:37,091 INFO L226 Difference]: Without dead ends: 53929 [2022-11-22 01:14:37,209 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 [2022-11-22 01:14:37,211 INFO L413 NwaCegarLoop]: 5172 mSDtfsCounter, 3246 mSDsluCounter, 3384 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3250 SdHoareTripleChecker+Valid, 8556 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:14:37,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3250 Valid, 8556 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 948 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-11-22 01:14:37,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53929 states. [2022-11-22 01:14:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53929 to 53855. [2022-11-22 01:14:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53855 states, 32025 states have (on average 1.2955815768930523) internal successors, (41491), 33065 states have internal predecessors, (41491), 17535 states have call successors, (17535), 4304 states have call predecessors, (17535), 4291 states have return successors, (17765), 17251 states have call predecessors, (17765), 17531 states have call successors, (17765) [2022-11-22 01:14:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53855 states to 53855 states and 76791 transitions. [2022-11-22 01:14:40,626 INFO L78 Accepts]: Start accepts. Automaton has 53855 states and 76791 transitions. Word has length 511 [2022-11-22 01:14:40,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:14:40,628 INFO L495 AbstractCegarLoop]: Abstraction has 53855 states and 76791 transitions. [2022-11-22 01:14:40,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-22 01:14:40,628 INFO L276 IsEmpty]: Start isEmpty. Operand 53855 states and 76791 transitions. [2022-11-22 01:14:40,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-11-22 01:14:40,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:14:40,637 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:14:40,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:14:40,638 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 01:14:40,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:14:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1630372974, now seen corresponding path program 1 times [2022-11-22 01:14:40,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:14:40,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647357271] [2022-11-22 01:14:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:14:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:14:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:14:42,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7963 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2022-11-22 01:14:42,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:14:42,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647357271] [2022-11-22 01:14:42,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647357271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:14:42,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:14:42,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:14:42,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035057100] [2022-11-22 01:14:42,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:14:42,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:14:42,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:14:42,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:14:42,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:14:42,135 INFO L87 Difference]: Start difference. First operand 53855 states and 76791 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 01:14:44,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:14:48,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:14:50,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:14:50,686 INFO L93 Difference]: Finished difference Result 55123 states and 78536 transitions. [2022-11-22 01:14:50,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:14:50,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 515 [2022-11-22 01:14:50,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:14:51,009 INFO L225 Difference]: With dead ends: 55123 [2022-11-22 01:14:51,009 INFO L226 Difference]: Without dead ends: 55121 [2022-11-22 01:14:51,036 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 [2022-11-22 01:14:51,037 INFO L413 NwaCegarLoop]: 4490 mSDtfsCounter, 3406 mSDsluCounter, 10788 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3418 SdHoareTripleChecker+Valid, 15278 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:14:51,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3418 Valid, 15278 Invalid, 1624 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1621 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-11-22 01:14:51,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55121 states. [2022-11-22 01:14:53,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55121 to 55114. [2022-11-22 01:14:53,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55114 states, 32740 states have (on average 1.2948686621869272) internal successors, (42394), 33808 states have internal predecessors, (42394), 17950 states have call successors, (17950), 4431 states have call predecessors, (17950), 4420 states have return successors, (18186), 17663 states have call predecessors, (18186), 17946 states have call successors, (18186) [2022-11-22 01:14:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55114 states to 55114 states and 78530 transitions. [2022-11-22 01:14:54,146 INFO L78 Accepts]: Start accepts. Automaton has 55114 states and 78530 transitions. Word has length 515 [2022-11-22 01:14:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:14:54,147 INFO L495 AbstractCegarLoop]: Abstraction has 55114 states and 78530 transitions. [2022-11-22 01:14:54,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 01:14:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 55114 states and 78530 transitions. [2022-11-22 01:14:54,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-11-22 01:14:54,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:14:54,156 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:14:54,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:14:54,156 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 01:14:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:14:54,157 INFO L85 PathProgramCache]: Analyzing trace with hash -768681352, now seen corresponding path program 1 times [2022-11-22 01:14:54,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:14:54,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785004525] [2022-11-22 01:14:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:14:54,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:14:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:14:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2022-11-22 01:14:55,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:14:55,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785004525] [2022-11-22 01:14:55,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785004525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:14:55,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:14:55,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:14:55,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094378939] [2022-11-22 01:14:55,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:14:55,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:14:55,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:14:55,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:14:55,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:14:55,495 INFO L87 Difference]: Start difference. First operand 55114 states and 78530 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-22 01:14:58,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:15:03,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:15:05,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:15:05,934 INFO L93 Difference]: Finished difference Result 97639 states and 138583 transitions. [2022-11-22 01:15:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:15:05,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 520 [2022-11-22 01:15:05,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:15:06,398 INFO L225 Difference]: With dead ends: 97639 [2022-11-22 01:15:06,398 INFO L226 Difference]: Without dead ends: 97637 [2022-11-22 01:15:06,431 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 [2022-11-22 01:15:06,432 INFO L413 NwaCegarLoop]: 4570 mSDtfsCounter, 2975 mSDsluCounter, 12188 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2984 SdHoareTripleChecker+Valid, 16758 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:15:06,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2984 Valid, 16758 Invalid, 1778 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1773 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-11-22 01:15:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97637 states. [2022-11-22 01:15:11,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97637 to 97600. [2022-11-22 01:15:11,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97600 states, 58165 states have (on average 1.2935958050373937) internal successors, (75242), 60165 states have internal predecessors, (75242), 31251 states have call successors, (31251), 8262 states have call predecessors, (31251), 8180 states have return successors, (32054), 30499 states have call predecessors, (32054), 31243 states have call successors, (32054) [2022-11-22 01:15:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97600 states to 97600 states and 138547 transitions. [2022-11-22 01:15:12,164 INFO L78 Accepts]: Start accepts. Automaton has 97600 states and 138547 transitions. Word has length 520 [2022-11-22 01:15:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:15:12,167 INFO L495 AbstractCegarLoop]: Abstraction has 97600 states and 138547 transitions. [2022-11-22 01:15:12,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-22 01:15:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand 97600 states and 138547 transitions. [2022-11-22 01:15:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-11-22 01:15:12,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:15:12,178 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:15:12,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:15:12,178 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 01:15:12,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:15:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash -259348585, now seen corresponding path program 1 times [2022-11-22 01:15:12,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:15:12,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951192252] [2022-11-22 01:15:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:15:12,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:15:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:15:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8070 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8066 trivial. 0 not checked. [2022-11-22 01:15:13,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:15:13,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951192252] [2022-11-22 01:15:13,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951192252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:15:13,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:15:13,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:15:13,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089556356] [2022-11-22 01:15:13,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:15:13,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:15:13,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:15:13,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:15:13,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:15:13,618 INFO L87 Difference]: Start difference. First operand 97600 states and 138547 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-22 01:15:16,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:15:20,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:15:24,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:15:24,038 INFO L93 Difference]: Finished difference Result 97617 states and 138560 transitions. [2022-11-22 01:15:24,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:15:24,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 534 [2022-11-22 01:15:24,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:15:24,471 INFO L225 Difference]: With dead ends: 97617 [2022-11-22 01:15:24,472 INFO L226 Difference]: Without dead ends: 97615 [2022-11-22 01:15:24,510 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 [2022-11-22 01:15:24,511 INFO L413 NwaCegarLoop]: 4372 mSDtfsCounter, 3400 mSDsluCounter, 10546 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3410 SdHoareTripleChecker+Valid, 14918 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:15:24,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3410 Valid, 14918 Invalid, 1591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1588 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-11-22 01:15:24,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97615 states. [2022-11-22 01:15:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97615 to 97608. [2022-11-22 01:15:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97608 states, 58171 states have (on average 1.2935655223393099) internal successors, (75248), 60171 states have internal predecessors, (75248), 31251 states have call successors, (31251), 8264 states have call predecessors, (31251), 8182 states have return successors, (32054), 30499 states have call predecessors, (32054), 31243 states have call successors, (32054) [2022-11-22 01:15:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97608 states to 97608 states and 138553 transitions. [2022-11-22 01:15:30,405 INFO L78 Accepts]: Start accepts. Automaton has 97608 states and 138553 transitions. Word has length 534 [2022-11-22 01:15:30,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:15:30,407 INFO L495 AbstractCegarLoop]: Abstraction has 97608 states and 138553 transitions. [2022-11-22 01:15:30,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-22 01:15:30,407 INFO L276 IsEmpty]: Start isEmpty. Operand 97608 states and 138553 transitions. [2022-11-22 01:15:30,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2022-11-22 01:15:30,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:15:30,420 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:15:30,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:15:30,421 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-22 01:15:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:15:30,422 INFO L85 PathProgramCache]: Analyzing trace with hash 538579259, now seen corresponding path program 1 times [2022-11-22 01:15:30,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:15:30,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560076331] [2022-11-22 01:15:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:15:30,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:15:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:15:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8081 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8075 trivial. 0 not checked. [2022-11-22 01:15:31,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:15:31,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560076331] [2022-11-22 01:15:31,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560076331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:15:31,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:15:31,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:15:31,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219376095] [2022-11-22 01:15:31,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:15:31,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:15:31,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:15:31,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:15:31,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:15:31,515 INFO L87 Difference]: Start difference. First operand 97608 states and 138553 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-22 01:15:34,233 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 []