./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-mutex_drivers-net-can-mcp251x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/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_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/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_27660105-1ba2-452c-9239-f52f7d24c2cb/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 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 --- 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 01:58:04,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:58:04,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:58:04,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:58:04,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:58:04,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:58:04,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:58:04,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:58:04,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:58:04,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:58:04,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:58:04,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:58:04,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:58:04,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:58:04,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:58:04,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:58:04,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:58:04,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:58:04,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:58:04,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:58:04,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:58:04,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:58:04,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:58:04,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:58:04,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:58:04,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:58:04,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:58:04,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:58:04,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:58:04,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:58:04,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:58:04,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:58:04,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:58:04,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:58:04,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:58:04,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:58:04,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:58:04,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:58:04,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:58:04,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:58:04,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:58:04,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:58:04,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:58:04,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:58:04,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:58:04,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:58:05,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:58:05,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:58:05,013 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:58:05,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:58:05,013 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:58:05,013 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:58:05,014 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:58:05,015 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:58:05,015 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:58:05,015 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:58:05,015 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:58:05,016 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:58:05,016 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:58:05,016 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:58:05,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:58:05,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:58:05,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:58:05,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:58:05,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:58:05,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:58:05,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:58:05,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:58:05,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:58:05,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:58:05,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:58:05,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:58:05,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:58:05,020 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:58:05,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:58:05,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:58:05,021 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:58:05,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:58:05,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:58:05,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:58:05,022 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_27660105-1ba2-452c-9239-f52f7d24c2cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 [2022-11-22 01:58:05,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:58:05,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:58:05,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:58:05,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:58:05,304 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:58:05,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2022-11-22 01:58:08,314 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:58:08,918 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:58:08,919 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2022-11-22 01:58:08,955 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/data/fd15bbe4a/f6d436246c044dcb8802b80f225cde03/FLAGc62f5dfe0 [2022-11-22 01:58:08,970 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/data/fd15bbe4a/f6d436246c044dcb8802b80f225cde03 [2022-11-22 01:58:08,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:58:08,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:58:08,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:58:08,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:58:08,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:58:08,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:58:08" (1/1) ... [2022-11-22 01:58:08,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3eb8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:08, skipping insertion in model container [2022-11-22 01:58:08,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:58:08" (1/1) ... [2022-11-22 01:58:08,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:58:09,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:58:11,563 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_27660105-1ba2-452c-9239-f52f7d24c2cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2022-11-22 01:58:11,567 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_27660105-1ba2-452c-9239-f52f7d24c2cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2022-11-22 01:58:11,568 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_27660105-1ba2-452c-9239-f52f7d24c2cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2022-11-22 01:58:11,568 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_27660105-1ba2-452c-9239-f52f7d24c2cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2022-11-22 01:58:11,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:58:11,617 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:58:12,007 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_27660105-1ba2-452c-9239-f52f7d24c2cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2022-11-22 01:58:12,008 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_27660105-1ba2-452c-9239-f52f7d24c2cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2022-11-22 01:58:12,009 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_27660105-1ba2-452c-9239-f52f7d24c2cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2022-11-22 01:58:12,010 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_27660105-1ba2-452c-9239-f52f7d24c2cb/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2022-11-22 01:58:12,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:58:12,165 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:58:12,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12 WrapperNode [2022-11-22 01:58:12,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:58:12,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:58:12,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:58:12,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:58:12,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12" (1/1) ... [2022-11-22 01:58:12,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12" (1/1) ... [2022-11-22 01:58:12,507 INFO L138 Inliner]: procedures = 340, calls = 1537, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 4110 [2022-11-22 01:58:12,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:58:12,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:58:12,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:58:12,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:58:12,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12" (1/1) ... [2022-11-22 01:58:12,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12" (1/1) ... [2022-11-22 01:58:12,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12" (1/1) ... [2022-11-22 01:58:12,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12" (1/1) ... [2022-11-22 01:58:12,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12" (1/1) ... [2022-11-22 01:58:12,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12" (1/1) ... [2022-11-22 01:58:12,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12" (1/1) ... [2022-11-22 01:58:12,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12" (1/1) ... [2022-11-22 01:58:12,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:58:12,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:58:12,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:58:12,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:58:12,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12" (1/1) ... [2022-11-22 01:58:12,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:58:12,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:58:12,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:58:12,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:58:12,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:58:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:58:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:58:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:58:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:58:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:58:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 01:58:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 01:58:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2022-11-22 01:58:12,821 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2022-11-22 01:58:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:58:12,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:58:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2022-11-22 01:58:12,821 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2022-11-22 01:58:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 01:58:12,821 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 01:58:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2022-11-22 01:58:12,822 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2022-11-22 01:58:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2022-11-22 01:58:12,823 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2022-11-22 01:58:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-11-22 01:58:12,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2022-11-22 01:58:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-22 01:58:12,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-22 01:58:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2022-11-22 01:58:12,824 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2022-11-22 01:58:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:58:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 01:58:12,825 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 01:58:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:58:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:58:12,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:58:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2022-11-22 01:58:12,826 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2022-11-22 01:58:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2022-11-22 01:58:12,826 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2022-11-22 01:58:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:58:12,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:58:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-22 01:58:12,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-22 01:58:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2022-11-22 01:58:12,827 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2022-11-22 01:58:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2022-11-22 01:58:12,827 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2022-11-22 01:58:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:58:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:58:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2022-11-22 01:58:12,828 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2022-11-22 01:58:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-22 01:58:12,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-22 01:58:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 01:58:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 01:58:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:58:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:58:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2022-11-22 01:58:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2022-11-22 01:58:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:58:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:58:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-22 01:58:12,830 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-22 01:58:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-11-22 01:58:12,830 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-11-22 01:58:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure clk_disable_unprepare [2022-11-22 01:58:12,830 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_disable_unprepare [2022-11-22 01:58:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 01:58:12,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 01:58:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-22 01:58:12,830 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-22 01:58:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure clk_unprepare [2022-11-22 01:58:12,831 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_unprepare [2022-11-22 01:58:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:58:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2022-11-22 01:58:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2022-11-22 01:58:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 01:58:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 01:58:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2022-11-22 01:58:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2022-11-22 01:58:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:58:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:58:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:58:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2022-11-22 01:58:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2022-11-22 01:58:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2022-11-22 01:58:12,834 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2022-11-22 01:58:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-22 01:58:12,834 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-22 01:58:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:58:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-22 01:58:12,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-22 01:58:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2022-11-22 01:58:12,835 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2022-11-22 01:58:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2022-11-22 01:58:12,835 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2022-11-22 01:58:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 01:58:12,836 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 01:58:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:58:12,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:58:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2022-11-22 01:58:12,836 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2022-11-22 01:58:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-22 01:58:12,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-22 01:58:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2022-11-22 01:58:12,837 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2022-11-22 01:58:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:58:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2022-11-22 01:58:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mcp_lock_of_mcp251x_priv [2022-11-22 01:58:12,842 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2022-11-22 01:58:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2022-11-22 01:58:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2022-11-22 01:58:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2022-11-22 01:58:12,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2022-11-22 01:58:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mcp_lock_of_mcp251x_priv [2022-11-22 01:58:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:58:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:58:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2022-11-22 01:58:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2022-11-22 01:58:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:58:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:58:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:58:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:58:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:58:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-22 01:58:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-22 01:58:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-22 01:58:12,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-22 01:58:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2022-11-22 01:58:12,851 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2022-11-22 01:58:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:58:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:58:12,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:58:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 01:58:12,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 01:58:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:58:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2022-11-22 01:58:12,852 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2022-11-22 01:58:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:58:12,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:58:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:58:12,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:58:12,853 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2022-11-22 01:58:12,854 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2022-11-22 01:58:12,854 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-22 01:58:12,854 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-22 01:58:12,854 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2022-11-22 01:58:12,854 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2022-11-22 01:58:12,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:58:12,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:58:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-11-22 01:58:12,855 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-11-22 01:58:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-22 01:58:12,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-22 01:58:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:58:12,856 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:58:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2022-11-22 01:58:12,856 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2022-11-22 01:58:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2022-11-22 01:58:12,856 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2022-11-22 01:58:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:58:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-11-22 01:58:12,857 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-11-22 01:58:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2022-11-22 01:58:12,857 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2022-11-22 01:58:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-22 01:58:12,857 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-22 01:58:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:58:12,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:58:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:58:12,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:58:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-22 01:58:12,858 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-22 01:58:13,607 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:58:13,610 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:58:14,139 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:59:11,748 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:59:13,023 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:59:15,315 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:59:15,316 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:59:15,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:15 BoogieIcfgContainer [2022-11-22 01:59:15,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:59:15,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:59:15,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:59:15,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:59:15,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:58:08" (1/3) ... [2022-11-22 01:59:15,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c745916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:15, skipping insertion in model container [2022-11-22 01:59:15,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:58:12" (2/3) ... [2022-11-22 01:59:15,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c745916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:15, skipping insertion in model container [2022-11-22 01:59:15,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:15" (3/3) ... [2022-11-22 01:59:15,329 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2022-11-22 01:59:15,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:59:15,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 01:59:15,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:59:15,463 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;@5263dfee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:59:15,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 01:59:15,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 1104 states, 666 states have (on average 1.3273273273273274) internal successors, (884), 689 states have internal predecessors, (884), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) [2022-11-22 01:59:15,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 01:59:15,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:15,510 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:15,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:15,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:15,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1971069095, now seen corresponding path program 1 times [2022-11-22 01:59:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:15,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059072110] [2022-11-22 01:59:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:15,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-22 01:59:17,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:17,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059072110] [2022-11-22 01:59:17,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059072110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:17,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:17,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:17,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984163682] [2022-11-22 01:59:17,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:17,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:17,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:17,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:17,131 INFO L87 Difference]: Start difference. First operand has 1104 states, 666 states have (on average 1.3273273273273274) internal successors, (884), 689 states have internal predecessors, (884), 359 states have call successors, (359), 77 states have call predecessors, (359), 76 states have return successors, (350), 344 states have call predecessors, (350), 350 states have call successors, (350) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-22 01:59:19,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:59:22,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:22,944 INFO L93 Difference]: Finished difference Result 3134 states and 4649 transitions. [2022-11-22 01:59:22,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:22,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2022-11-22 01:59:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:22,991 INFO L225 Difference]: With dead ends: 3134 [2022-11-22 01:59:22,991 INFO L226 Difference]: Without dead ends: 2035 [2022-11-22 01:59:23,007 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 01:59:23,012 INFO L413 NwaCegarLoop]: 1676 mSDtfsCounter, 1437 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:23,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 2993 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 487 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-22 01:59:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-11-22 01:59:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2016. [2022-11-22 01:59:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1227 states have (on average 1.321923390383048) internal successors, (1622), 1272 states have internal predecessors, (1622), 641 states have call successors, (641), 149 states have call predecessors, (641), 145 states have return successors, (679), 617 states have call predecessors, (679), 637 states have call successors, (679) [2022-11-22 01:59:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2942 transitions. [2022-11-22 01:59:23,274 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2942 transitions. Word has length 131 [2022-11-22 01:59:23,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:23,275 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 2942 transitions. [2022-11-22 01:59:23,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-22 01:59:23,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2942 transitions. [2022-11-22 01:59:23,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-22 01:59:23,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:23,282 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 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] [2022-11-22 01:59:23,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:59:23,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:23,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:23,284 INFO L85 PathProgramCache]: Analyzing trace with hash -532263976, now seen corresponding path program 1 times [2022-11-22 01:59:23,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:23,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162914330] [2022-11-22 01:59:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:23,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-22 01:59:24,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:24,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162914330] [2022-11-22 01:59:24,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162914330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:24,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:24,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698535927] [2022-11-22 01:59:24,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:24,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:24,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:24,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:24,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:24,172 INFO L87 Difference]: Start difference. First operand 2016 states and 2942 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:59:26,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:59:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:30,116 INFO L93 Difference]: Finished difference Result 5915 states and 8631 transitions. [2022-11-22 01:59:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:30,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2022-11-22 01:59:30,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:30,146 INFO L225 Difference]: With dead ends: 5915 [2022-11-22 01:59:30,146 INFO L226 Difference]: Without dead ends: 3922 [2022-11-22 01:59:30,158 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 01:59:30,159 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 1465 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:30,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 2913 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 506 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-22 01:59:30,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2022-11-22 01:59:30,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3918. [2022-11-22 01:59:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3918 states, 2402 states have (on average 1.3201498751040799) internal successors, (3171), 2484 states have internal predecessors, (3171), 1226 states have call successors, (1226), 294 states have call predecessors, (1226), 287 states have return successors, (1306), 1185 states have call predecessors, (1306), 1222 states have call successors, (1306) [2022-11-22 01:59:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 5703 transitions. [2022-11-22 01:59:30,411 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 5703 transitions. Word has length 134 [2022-11-22 01:59:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:30,412 INFO L495 AbstractCegarLoop]: Abstraction has 3918 states and 5703 transitions. [2022-11-22 01:59:30,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:59:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 5703 transitions. [2022-11-22 01:59:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-22 01:59:30,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:30,426 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:30,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:59:30,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:30,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:30,427 INFO L85 PathProgramCache]: Analyzing trace with hash 355327958, now seen corresponding path program 1 times [2022-11-22 01:59:30,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:30,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715757720] [2022-11-22 01:59:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:30,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-22 01:59:31,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:31,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715757720] [2022-11-22 01:59:31,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715757720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:31,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:31,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:31,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420904510] [2022-11-22 01:59:31,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:31,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:31,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:31,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:31,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:31,267 INFO L87 Difference]: Start difference. First operand 3918 states and 5703 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-22 01:59:33,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:59:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:37,226 INFO L93 Difference]: Finished difference Result 11272 states and 16329 transitions. [2022-11-22 01:59:37,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:37,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2022-11-22 01:59:37,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:37,278 INFO L225 Difference]: With dead ends: 11272 [2022-11-22 01:59:37,278 INFO L226 Difference]: Without dead ends: 7377 [2022-11-22 01:59:37,300 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 01:59:37,301 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 1324 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:37,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 3001 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 586 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-22 01:59:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7377 states. [2022-11-22 01:59:37,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7377 to 7352. [2022-11-22 01:59:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 4474 states have (on average 1.2988377291014752) internal successors, (5811), 4644 states have internal predecessors, (5811), 2306 states have call successors, (2306), 582 states have call predecessors, (2306), 569 states have return successors, (2406), 2217 states have call predecessors, (2406), 2302 states have call successors, (2406) [2022-11-22 01:59:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 10523 transitions. [2022-11-22 01:59:37,717 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 10523 transitions. Word has length 133 [2022-11-22 01:59:37,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:37,718 INFO L495 AbstractCegarLoop]: Abstraction has 7352 states and 10523 transitions. [2022-11-22 01:59:37,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-22 01:59:37,718 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 10523 transitions. [2022-11-22 01:59:37,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-22 01:59:37,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:37,722 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:37,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:59:37,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:37,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1578939891, now seen corresponding path program 1 times [2022-11-22 01:59:37,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:37,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108014752] [2022-11-22 01:59:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:37,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-22 01:59:38,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:38,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108014752] [2022-11-22 01:59:38,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108014752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:38,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:38,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:38,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687560384] [2022-11-22 01:59:38,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:38,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:38,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:38,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:38,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:38,643 INFO L87 Difference]: Start difference. First operand 7352 states and 10523 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-22 01:59:40,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:59:44,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:44,298 INFO L93 Difference]: Finished difference Result 17756 states and 25319 transitions. [2022-11-22 01:59:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:44,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2022-11-22 01:59:44,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:44,366 INFO L225 Difference]: With dead ends: 17756 [2022-11-22 01:59:44,366 INFO L226 Difference]: Without dead ends: 10427 [2022-11-22 01:59:44,403 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 01:59:44,407 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 1418 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:44,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 2926 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 518 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-22 01:59:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10427 states. [2022-11-22 01:59:45,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10427 to 10402. [2022-11-22 01:59:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10402 states, 6318 states have (on average 1.2841088952200064) internal successors, (8113), 6566 states have internal predecessors, (8113), 3234 states have call successors, (3234), 866 states have call predecessors, (3234), 847 states have return successors, (3378), 3091 states have call predecessors, (3378), 3230 states have call successors, (3378) [2022-11-22 01:59:45,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10402 states to 10402 states and 14725 transitions. [2022-11-22 01:59:45,110 INFO L78 Accepts]: Start accepts. Automaton has 10402 states and 14725 transitions. Word has length 134 [2022-11-22 01:59:45,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:45,111 INFO L495 AbstractCegarLoop]: Abstraction has 10402 states and 14725 transitions. [2022-11-22 01:59:45,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-22 01:59:45,111 INFO L276 IsEmpty]: Start isEmpty. Operand 10402 states and 14725 transitions. [2022-11-22 01:59:45,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-22 01:59:45,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:45,114 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:45,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:59:45,114 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:45,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1541575248, now seen corresponding path program 1 times [2022-11-22 01:59:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:45,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426076977] [2022-11-22 01:59:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:45,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-22 01:59:45,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:45,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426076977] [2022-11-22 01:59:45,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426076977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:45,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:45,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:45,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758861260] [2022-11-22 01:59:45,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:45,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:45,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:45,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:45,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:45,797 INFO L87 Difference]: Start difference. First operand 10402 states and 14725 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 01:59:47,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:59:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:52,041 INFO L93 Difference]: Finished difference Result 30764 states and 43815 transitions. [2022-11-22 01:59:52,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:52,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2022-11-22 01:59:52,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:52,158 INFO L225 Difference]: With dead ends: 30764 [2022-11-22 01:59:52,159 INFO L226 Difference]: Without dead ends: 20385 [2022-11-22 01:59:52,205 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 01:59:52,206 INFO L413 NwaCegarLoop]: 1670 mSDtfsCounter, 1508 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:52,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 2977 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 493 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-22 01:59:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20385 states. [2022-11-22 01:59:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20385 to 20344. [2022-11-22 01:59:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20344 states, 12342 states have (on average 1.2820450494247286) internal successors, (15823), 12872 states have internal predecessors, (15823), 6330 states have call successors, (6330), 1718 states have call predecessors, (6330), 1669 states have return successors, (6882), 5997 states have call predecessors, (6882), 6326 states have call successors, (6882) [2022-11-22 01:59:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20344 states to 20344 states and 29035 transitions. [2022-11-22 01:59:53,773 INFO L78 Accepts]: Start accepts. Automaton has 20344 states and 29035 transitions. Word has length 140 [2022-11-22 01:59:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:53,774 INFO L495 AbstractCegarLoop]: Abstraction has 20344 states and 29035 transitions. [2022-11-22 01:59:53,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 01:59:53,776 INFO L276 IsEmpty]: Start isEmpty. Operand 20344 states and 29035 transitions. [2022-11-22 01:59:53,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-22 01:59:53,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:53,781 INFO L195 NwaCegarLoop]: trace histogram [13, 11, 11, 11, 11, 11, 11, 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] [2022-11-22 01:59:53,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:59:53,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 01:59:53,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash 300757205, now seen corresponding path program 1 times [2022-11-22 01:59:53,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:53,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315687349] [2022-11-22 01:59:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:53,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-22 01:59:54,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:54,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315687349] [2022-11-22 01:59:54,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315687349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:54,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:54,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:54,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930727217] [2022-11-22 01:59:54,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:54,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:54,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:54,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:54,615 INFO L87 Difference]: Start difference. First operand 20344 states and 29035 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 01:59:56,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:00:01,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:01,092 INFO L93 Difference]: Finished difference Result 49218 states and 70079 transitions. [2022-11-22 02:00:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:01,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 153 [2022-11-22 02:00:01,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:01,232 INFO L225 Difference]: With dead ends: 49218 [2022-11-22 02:00:01,232 INFO L226 Difference]: Without dead ends: 28897 [2022-11-22 02:00:01,298 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 02:00:01,298 INFO L413 NwaCegarLoop]: 1793 mSDtfsCounter, 1433 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:01,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 3085 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 578 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-22 02:00:01,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28897 states. [2022-11-22 02:00:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28897 to 28848. [2022-11-22 02:00:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28848 states, 17558 states have (on average 1.2766260394122337) internal successors, (22415), 18362 states have internal predecessors, (22415), 8866 states have call successors, (8866), 2486 states have call predecessors, (8866), 2421 states have return successors, (9548), 8361 states have call predecessors, (9548), 8862 states have call successors, (9548) [2022-11-22 02:00:03,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28848 states to 28848 states and 40829 transitions. [2022-11-22 02:00:03,285 INFO L78 Accepts]: Start accepts. Automaton has 28848 states and 40829 transitions. Word has length 153 [2022-11-22 02:00:03,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:03,286 INFO L495 AbstractCegarLoop]: Abstraction has 28848 states and 40829 transitions. [2022-11-22 02:00:03,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 02:00:03,286 INFO L276 IsEmpty]: Start isEmpty. Operand 28848 states and 40829 transitions. [2022-11-22 02:00:03,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-22 02:00:03,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:03,290 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 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] [2022-11-22 02:00:03,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:00:03,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:00:03,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:03,291 INFO L85 PathProgramCache]: Analyzing trace with hash -560496312, now seen corresponding path program 1 times [2022-11-22 02:00:03,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:03,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703758452] [2022-11-22 02:00:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:03,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-22 02:00:05,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:05,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703758452] [2022-11-22 02:00:05,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703758452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:05,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:05,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:00:05,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957664223] [2022-11-22 02:00:05,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:05,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:00:05,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:05,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:00:05,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:05,605 INFO L87 Difference]: Start difference. First operand 28848 states and 40829 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:00:07,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:00:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:12,837 INFO L93 Difference]: Finished difference Result 28854 states and 40834 transitions. [2022-11-22 02:00:12,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:00:12,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 178 [2022-11-22 02:00:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:12,978 INFO L225 Difference]: With dead ends: 28854 [2022-11-22 02:00:12,978 INFO L226 Difference]: Without dead ends: 28852 [2022-11-22 02:00:12,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:00:12,997 INFO L413 NwaCegarLoop]: 1314 mSDtfsCounter, 1513 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:12,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 3937 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 734 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-22 02:00:13,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28852 states. [2022-11-22 02:00:14,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28852 to 28852. [2022-11-22 02:00:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28852 states, 17561 states have (on average 1.2765787825294688) internal successors, (22418), 18365 states have internal predecessors, (22418), 8866 states have call successors, (8866), 2487 states have call predecessors, (8866), 2422 states have return successors, (9548), 8361 states have call predecessors, (9548), 8862 states have call successors, (9548) [2022-11-22 02:00:14,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28852 states to 28852 states and 40832 transitions. [2022-11-22 02:00:14,957 INFO L78 Accepts]: Start accepts. Automaton has 28852 states and 40832 transitions. Word has length 178 [2022-11-22 02:00:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:14,962 INFO L495 AbstractCegarLoop]: Abstraction has 28852 states and 40832 transitions. [2022-11-22 02:00:14,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:00:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 28852 states and 40832 transitions. [2022-11-22 02:00:14,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-22 02:00:14,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:14,967 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 5, 5, 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] [2022-11-22 02:00:14,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:00:14,967 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:00:14,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1904804951, now seen corresponding path program 1 times [2022-11-22 02:00:14,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:14,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605223285] [2022-11-22 02:00:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-22 02:00:17,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:17,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605223285] [2022-11-22 02:00:17,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605223285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:17,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:17,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:00:17,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999630838] [2022-11-22 02:00:17,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:17,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:00:17,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:17,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:00:17,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:17,183 INFO L87 Difference]: Start difference. First operand 28852 states and 40832 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:00:19,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:00:24,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:24,549 INFO L93 Difference]: Finished difference Result 28858 states and 40837 transitions. [2022-11-22 02:00:24,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:00:24,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 184 [2022-11-22 02:00:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:24,658 INFO L225 Difference]: With dead ends: 28858 [2022-11-22 02:00:24,659 INFO L226 Difference]: Without dead ends: 28856 [2022-11-22 02:00:24,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:00:24,670 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 1508 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 3940 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:24,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 3940 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 734 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-22 02:00:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28856 states. [2022-11-22 02:00:26,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28856 to 28856. [2022-11-22 02:00:26,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28856 states, 17564 states have (on average 1.2765315417900251) internal successors, (22421), 18368 states have internal predecessors, (22421), 8866 states have call successors, (8866), 2488 states have call predecessors, (8866), 2423 states have return successors, (9548), 8361 states have call predecessors, (9548), 8862 states have call successors, (9548) [2022-11-22 02:00:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28856 states to 28856 states and 40835 transitions. [2022-11-22 02:00:26,297 INFO L78 Accepts]: Start accepts. Automaton has 28856 states and 40835 transitions. Word has length 184 [2022-11-22 02:00:26,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:26,298 INFO L495 AbstractCegarLoop]: Abstraction has 28856 states and 40835 transitions. [2022-11-22 02:00:26,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:00:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 28856 states and 40835 transitions. [2022-11-22 02:00:26,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-22 02:00:26,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:26,302 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 3, 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] [2022-11-22 02:00:26,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:00:26,303 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:00:26,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:26,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1493603305, now seen corresponding path program 1 times [2022-11-22 02:00:26,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:26,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359105464] [2022-11-22 02:00:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:26,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2022-11-22 02:00:28,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:28,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359105464] [2022-11-22 02:00:28,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359105464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:28,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:28,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:00:28,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31655389] [2022-11-22 02:00:28,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:28,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:00:28,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:28,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:00:28,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:28,207 INFO L87 Difference]: Start difference. First operand 28856 states and 40835 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:00:30,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:00:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:36,266 INFO L93 Difference]: Finished difference Result 32314 states and 44610 transitions. [2022-11-22 02:00:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:00:36,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 187 [2022-11-22 02:00:36,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:36,374 INFO L225 Difference]: With dead ends: 32314 [2022-11-22 02:00:36,374 INFO L226 Difference]: Without dead ends: 32310 [2022-11-22 02:00:36,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:00:36,388 INFO L413 NwaCegarLoop]: 1374 mSDtfsCounter, 1105 mSDsluCounter, 3202 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:36,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 4576 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 820 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-22 02:00:36,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32310 states. [2022-11-22 02:00:38,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32310 to 32310. [2022-11-22 02:00:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32310 states, 19404 states have (on average 1.2634508348794062) internal successors, (24516), 20239 states have internal predecessors, (24516), 9704 states have call successors, (9704), 3279 states have call predecessors, (9704), 3199 states have return successors, (10386), 9185 states have call predecessors, (10386), 9700 states have call successors, (10386) [2022-11-22 02:00:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32310 states to 32310 states and 44606 transitions. [2022-11-22 02:00:38,176 INFO L78 Accepts]: Start accepts. Automaton has 32310 states and 44606 transitions. Word has length 187 [2022-11-22 02:00:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:38,177 INFO L495 AbstractCegarLoop]: Abstraction has 32310 states and 44606 transitions. [2022-11-22 02:00:38,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:00:38,177 INFO L276 IsEmpty]: Start isEmpty. Operand 32310 states and 44606 transitions. [2022-11-22 02:00:38,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-22 02:00:38,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:38,182 INFO L195 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 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] [2022-11-22 02:00:38,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:00:38,183 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:00:38,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:38,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1533971287, now seen corresponding path program 1 times [2022-11-22 02:00:38,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:38,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239980930] [2022-11-22 02:00:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:38,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-11-22 02:00:40,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:40,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239980930] [2022-11-22 02:00:40,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239980930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:40,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:40,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:00:40,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183105714] [2022-11-22 02:00:40,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:40,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:00:40,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:40,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:00:40,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:40,048 INFO L87 Difference]: Start difference. First operand 32310 states and 44606 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 02:00:42,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:00:48,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:48,777 INFO L93 Difference]: Finished difference Result 32310 states and 44606 transitions. [2022-11-22 02:00:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:00:48,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 194 [2022-11-22 02:00:48,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:48,879 INFO L225 Difference]: With dead ends: 32310 [2022-11-22 02:00:48,879 INFO L226 Difference]: Without dead ends: 31999 [2022-11-22 02:00:48,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:00:48,893 INFO L413 NwaCegarLoop]: 1315 mSDtfsCounter, 1504 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:48,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 3937 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 729 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-22 02:00:48,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31999 states. [2022-11-22 02:00:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31999 to 31999. [2022-11-22 02:00:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31999 states, 19328 states have (on average 1.2595198675496688) internal successors, (24344), 20067 states have internal predecessors, (24344), 9505 states have call successors, (9505), 3242 states have call predecessors, (9505), 3164 states have return successors, (10191), 9083 states have call predecessors, (10191), 9505 states have call successors, (10191) [2022-11-22 02:00:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31999 states to 31999 states and 44040 transitions. [2022-11-22 02:00:50,915 INFO L78 Accepts]: Start accepts. Automaton has 31999 states and 44040 transitions. Word has length 194 [2022-11-22 02:00:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:50,915 INFO L495 AbstractCegarLoop]: Abstraction has 31999 states and 44040 transitions. [2022-11-22 02:00:50,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 02:00:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 31999 states and 44040 transitions. [2022-11-22 02:00:50,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-22 02:00:50,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:50,920 INFO L195 NwaCegarLoop]: trace histogram [16, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 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] [2022-11-22 02:00:50,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:00:50,921 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:00:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2038481330, now seen corresponding path program 1 times [2022-11-22 02:00:50,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:50,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536122718] [2022-11-22 02:00:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-22 02:00:51,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:51,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536122718] [2022-11-22 02:00:51,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536122718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:00:51,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47478780] [2022-11-22 02:00:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:51,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:51,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:51,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:00:51,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:00:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:54,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 3550 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:00:54,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:00:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2022-11-22 02:00:54,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:00:54,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47478780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:54,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:00:54,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 02:00:54,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635620926] [2022-11-22 02:00:54,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:54,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:54,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:54,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:54,240 INFO L87 Difference]: Start difference. First operand 31999 states and 44040 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:00:56,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:01:02,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:02,687 INFO L93 Difference]: Finished difference Result 75711 states and 104490 transitions. [2022-11-22 02:01:02,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:01:02,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 195 [2022-11-22 02:01:02,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:02,835 INFO L225 Difference]: With dead ends: 75711 [2022-11-22 02:01:02,835 INFO L226 Difference]: Without dead ends: 45997 [2022-11-22 02:01:02,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:01:02,912 INFO L413 NwaCegarLoop]: 1835 mSDtfsCounter, 1407 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:02,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 3084 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 549 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-22 02:01:02,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45997 states. [2022-11-22 02:01:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45997 to 45961. [2022-11-22 02:01:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45961 states, 27790 states have (on average 1.260561353004678) internal successors, (35031), 28862 states have internal predecessors, (35031), 13603 states have call successors, (13603), 4678 states have call predecessors, (13603), 4566 states have return successors, (14611), 12978 states have call predecessors, (14611), 13603 states have call successors, (14611) [2022-11-22 02:01:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45961 states to 45961 states and 63245 transitions. [2022-11-22 02:01:05,432 INFO L78 Accepts]: Start accepts. Automaton has 45961 states and 63245 transitions. Word has length 195 [2022-11-22 02:01:05,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:05,433 INFO L495 AbstractCegarLoop]: Abstraction has 45961 states and 63245 transitions. [2022-11-22 02:01:05,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:01:05,433 INFO L276 IsEmpty]: Start isEmpty. Operand 45961 states and 63245 transitions. [2022-11-22 02:01:05,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-22 02:01:05,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:05,440 INFO L195 NwaCegarLoop]: trace histogram [17, 11, 11, 11, 11, 11, 11, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:05,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:01:05,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27660105-1ba2-452c-9239-f52f7d24c2cb/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:01:05,657 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:01:05,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1273986720, now seen corresponding path program 1 times [2022-11-22 02:01:05,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:05,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781652706] [2022-11-22 02:01:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:05,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2022-11-22 02:01:06,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:06,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781652706] [2022-11-22 02:01:06,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781652706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:06,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:06,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:01:06,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441732847] [2022-11-22 02:01:06,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:06,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:01:06,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:06,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:01:06,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:01:06,348 INFO L87 Difference]: Start difference. First operand 45961 states and 63245 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-22 02:01:08,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:01:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:16,834 INFO L93 Difference]: Finished difference Result 110253 states and 152017 transitions. [2022-11-22 02:01:16,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:01:16,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 213 [2022-11-22 02:01:16,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:17,063 INFO L225 Difference]: With dead ends: 110253 [2022-11-22 02:01:17,063 INFO L226 Difference]: Without dead ends: 66577 [2022-11-22 02:01:17,170 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 02:01:17,170 INFO L413 NwaCegarLoop]: 2464 mSDtfsCounter, 1400 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:17,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 3724 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 736 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-22 02:01:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66577 states. [2022-11-22 02:01:20,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66577 to 66525. [2022-11-22 02:01:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66525 states, 40258 states have (on average 1.25989865368374) internal successors, (50721), 41836 states have internal predecessors, (50721), 19643 states have call successors, (19643), 6782 states have call predecessors, (19643), 6622 states have return successors, (21099), 18724 states have call predecessors, (21099), 19643 states have call successors, (21099) [2022-11-22 02:01:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66525 states to 66525 states and 91463 transitions. [2022-11-22 02:01:20,783 INFO L78 Accepts]: Start accepts. Automaton has 66525 states and 91463 transitions. Word has length 213 [2022-11-22 02:01:20,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:20,784 INFO L495 AbstractCegarLoop]: Abstraction has 66525 states and 91463 transitions. [2022-11-22 02:01:20,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-22 02:01:20,784 INFO L276 IsEmpty]: Start isEmpty. Operand 66525 states and 91463 transitions. [2022-11-22 02:01:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-22 02:01:20,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:20,791 INFO L195 NwaCegarLoop]: trace histogram [18, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:20,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:01:20,791 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:01:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:20,792 INFO L85 PathProgramCache]: Analyzing trace with hash 189484431, now seen corresponding path program 1 times [2022-11-22 02:01:20,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:20,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301665757] [2022-11-22 02:01:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:20,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2022-11-22 02:01:23,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:23,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301665757] [2022-11-22 02:01:23,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301665757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:23,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:23,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:01:23,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951952793] [2022-11-22 02:01:23,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:23,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:01:23,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:23,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:01:23,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:01:23,540 INFO L87 Difference]: Start difference. First operand 66525 states and 91463 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:01:25,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:01:33,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:33,790 INFO L93 Difference]: Finished difference Result 66525 states and 91463 transitions. [2022-11-22 02:01:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:01:33,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 220 [2022-11-22 02:01:33,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:34,096 INFO L225 Difference]: With dead ends: 66525 [2022-11-22 02:01:34,096 INFO L226 Difference]: Without dead ends: 66523 [2022-11-22 02:01:34,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:01:34,125 INFO L413 NwaCegarLoop]: 1347 mSDtfsCounter, 1048 mSDsluCounter, 3156 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 4503 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:34,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 4503 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 808 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-22 02:01:34,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66523 states. [2022-11-22 02:01:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66523 to 66523. [2022-11-22 02:01:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66523 states, 40257 states have (on average 1.2581414412400327) internal successors, (50649), 41834 states have internal predecessors, (50649), 19643 states have call successors, (19643), 6782 states have call predecessors, (19643), 6622 states have return successors, (21099), 18724 states have call predecessors, (21099), 19643 states have call successors, (21099) [2022-11-22 02:01:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66523 states to 66523 states and 91391 transitions. [2022-11-22 02:01:38,166 INFO L78 Accepts]: Start accepts. Automaton has 66523 states and 91391 transitions. Word has length 220 [2022-11-22 02:01:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:38,167 INFO L495 AbstractCegarLoop]: Abstraction has 66523 states and 91391 transitions. [2022-11-22 02:01:38,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 02:01:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 66523 states and 91391 transitions. [2022-11-22 02:01:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-22 02:01:38,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:38,178 INFO L195 NwaCegarLoop]: trace histogram [18, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:38,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:01:38,179 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:01:38,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1099853598, now seen corresponding path program 1 times [2022-11-22 02:01:38,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:38,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119515980] [2022-11-22 02:01:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:38,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2022-11-22 02:01:39,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:39,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119515980] [2022-11-22 02:01:39,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119515980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:39,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:39,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:01:39,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034340707] [2022-11-22 02:01:39,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:39,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:01:39,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:39,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:01:39,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:01:39,531 INFO L87 Difference]: Start difference. First operand 66523 states and 91391 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-22 02:01:41,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []