./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:12:36,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:12:36,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:12:36,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:12:36,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:12:36,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:12:36,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:12:36,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:12:36,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:12:36,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:12:36,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:12:36,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:12:36,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:12:36,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:12:36,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:12:36,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:12:36,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:12:36,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:12:36,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:12:36,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:12:36,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:12:36,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:12:36,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:12:36,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:12:36,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:12:36,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:12:36,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:12:36,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:12:36,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:12:36,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:12:36,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:12:36,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:12:36,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:12:36,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:12:36,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:12:36,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:12:36,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:12:36,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:12:36,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:12:36,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:12:36,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:12:36,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:12:36,671 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:12:36,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:12:36,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:12:36,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:12:36,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:12:36,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:12:36,674 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:12:36,674 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:12:36,674 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:12:36,675 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:12:36,676 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:12:36,676 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:12:36,676 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:12:36,676 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:12:36,677 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:12:36,677 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:12:36,677 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:12:36,677 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:12:36,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:12:36,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:12:36,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:12:36,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:12:36,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:12:36,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:12:36,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:12:36,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:12:36,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:12:36,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:12:36,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:12:36,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:36,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:12:36,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:12:36,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:12:36,684 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:12:36,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:12:36,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:12:36,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:12:36,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:12:36,685 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 [2021-11-20 23:12:36,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:12:37,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:12:37,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:12:37,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:12:37,025 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:12:37,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-20 23:12:37,115 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/data/f7934a683/59fc5f9c5f7e40589c71a435757381e2/FLAG087756425 [2021-11-20 23:12:38,110 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:12:38,112 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-20 23:12:38,202 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/data/f7934a683/59fc5f9c5f7e40589c71a435757381e2/FLAG087756425 [2021-11-20 23:12:38,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/data/f7934a683/59fc5f9c5f7e40589c71a435757381e2 [2021-11-20 23:12:38,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:12:38,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:12:38,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:38,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:12:38,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:12:38,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:38" (1/1) ... [2021-11-20 23:12:38,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b2f21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:38, skipping insertion in model container [2021-11-20 23:12:38,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:38" (1/1) ... [2021-11-20 23:12:38,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:12:38,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:12:42,322 WARN L230 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_d15c7ee2-5643-4560-8332-bef7ee4ce737/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2021-11-20 23:12:42,327 WARN L230 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_d15c7ee2-5643-4560-8332-bef7ee4ce737/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2021-11-20 23:12:42,328 WARN L230 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_d15c7ee2-5643-4560-8332-bef7ee4ce737/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2021-11-20 23:12:42,329 WARN L230 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_d15c7ee2-5643-4560-8332-bef7ee4ce737/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2021-11-20 23:12:42,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:12:42,399 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:12:42,890 WARN L230 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_d15c7ee2-5643-4560-8332-bef7ee4ce737/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2021-11-20 23:12:42,891 WARN L230 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_d15c7ee2-5643-4560-8332-bef7ee4ce737/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2021-11-20 23:12:42,892 WARN L230 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_d15c7ee2-5643-4560-8332-bef7ee4ce737/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2021-11-20 23:12:42,893 WARN L230 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_d15c7ee2-5643-4560-8332-bef7ee4ce737/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2021-11-20 23:12:42,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:12:43,145 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:12:43,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43 WrapperNode [2021-11-20 23:12:43,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:43,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:12:43,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:12:43,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:12:43,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2021-11-20 23:12:43,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2021-11-20 23:12:43,543 INFO L137 Inliner]: procedures = 553, calls = 3557, calls flagged for inlining = 272, calls inlined = 248, statements flattened = 8870 [2021-11-20 23:12:43,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:12:43,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:12:43,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:12:43,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:12:43,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2021-11-20 23:12:43,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2021-11-20 23:12:43,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2021-11-20 23:12:43,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2021-11-20 23:12:43,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2021-11-20 23:12:43,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2021-11-20 23:12:43,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2021-11-20 23:12:44,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:12:44,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:12:44,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:12:44,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:12:44,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (1/1) ... [2021-11-20 23:12:44,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:44,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:12:44,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:12:44,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15c7ee2-5643-4560-8332-bef7ee4ce737/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:12:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_evict_inode [2021-11-20 23:12:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_evict_inode [2021-11-20 23:12:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2021-11-20 23:12:44,096 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2021-11-20 23:12:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:12:44,096 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:12:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_unlink [2021-11-20 23:12:44,096 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_unlink [2021-11-20 23:12:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_get_inode [2021-11-20 23:12:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_get_inode [2021-11-20 23:12:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-20 23:12:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-20 23:12:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:12:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:12:44,097 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_lseek [2021-11-20 23:12:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_lseek [2021-11-20 23:12:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure do_expire_wait [2021-11-20 23:12:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure do_expire_wait [2021-11-20 23:12:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:12:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:12:44,098 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-20 23:12:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-20 23:12:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2021-11-20 23:12:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2021-11-20 23:12:44,099 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2021-11-20 23:12:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2021-11-20 23:12:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure current_kernel_time [2021-11-20 23:12:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure current_kernel_time [2021-11-20 23:12:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_indirect [2021-11-20 23:12:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_indirect [2021-11-20 23:12:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2021-11-20 23:12:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2021-11-20 23:12:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_clear_managed [2021-11-20 23:12:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_clear_managed [2021-11-20 23:12:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure from_kgid_munged [2021-11-20 23:12:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kgid_munged [2021-11-20 23:12:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure follow_down_one [2021-11-20 23:12:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure follow_down_one [2021-11-20 23:12:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_show_options [2021-11-20 23:12:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_show_options [2021-11-20 23:12:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_48 [2021-11-20 23:12:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_48 [2021-11-20 23:12:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_57 [2021-11-20 23:12:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_57 [2021-11-20 23:12:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure __autofs4_add_expiring [2021-11-20 23:12:44,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __autofs4_add_expiring [2021-11-20 23:12:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:12:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_wait [2021-11-20 23:12:44,105 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_wait [2021-11-20 23:12:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl [2021-11-20 23:12:44,105 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl [2021-11-20 23:12:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:12:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:12:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-20 23:12:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-20 23:12:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:12:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:12:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:12:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure d_count [2021-11-20 23:12:44,108 INFO L138 BoogieDeclarations]: Found implementation of procedure d_count [2021-11-20 23:12:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-20 23:12:44,108 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-20 23:12:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2021-11-20 23:12:44,108 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2021-11-20 23:12:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-20 23:12:44,109 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-20 23:12:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 23:12:44,110 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 23:12:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-20 23:12:44,110 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-20 23:12:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_oz_mode [2021-11-20 23:12:44,110 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_oz_mode [2021-11-20 23:12:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_do_expire_multi [2021-11-20 23:12:44,111 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_do_expire_multi [2021-11-20 23:12:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2021-11-20 23:12:44,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2021-11-20 23:12:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure __task_pid_nr_ns [2021-11-20 23:12:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __task_pid_nr_ns [2021-11-20 23:12:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 23:12:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 23:12:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_54 [2021-11-20 23:12:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_54 [2021-11-20 23:12:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_sbi [2021-11-20 23:12:44,113 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_sbi [2021-11-20 23:12:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:12:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-20 23:12:44,114 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-20 23:12:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_siglock_of_sighand_struct [2021-11-20 23:12:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_siglock_of_sighand_struct [2021-11-20 23:12:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_new_ino [2021-11-20 23:12:44,115 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_new_ino [2021-11-20 23:12:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure simple_empty [2021-11-20 23:12:44,116 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_empty [2021-11-20 23:12:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:12:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:12:44,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:12:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_can_expire [2021-11-20 23:12:44,116 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_can_expire [2021-11-20 23:12:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_ino [2021-11-20 23:12:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_ino [2021-11-20 23:12:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:12:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2021-11-20 23:12:44,117 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2021-11-20 23:12:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_open [2021-11-20 23:12:44,118 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_open [2021-11-20 23:12:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:12:44,121 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:12:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_rmdir [2021-11-20 23:12:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_rmdir [2021-11-20 23:12:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount [2021-11-20 23:12:44,122 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount [2021-11-20 23:12:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl_exit [2021-11-20 23:12:44,123 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl_exit [2021-11-20 23:12:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-20 23:12:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-20 23:12:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:12:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:12:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_open [2021-11-20 23:12:44,130 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_open [2021-11-20 23:12:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-20 23:12:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-20 23:12:44,131 INFO L130 BoogieDeclarations]: Found specification of procedure clear_nlink [2021-11-20 23:12:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_nlink [2021-11-20 23:12:44,131 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_trigger [2021-11-20 23:12:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_trigger [2021-11-20 23:12:44,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:12:44,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:12:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:12:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-20 23:12:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-20 23:12:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:12:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:12:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:12:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:12:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-20 23:12:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-20 23:12:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-20 23:12:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-20 23:12:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-20 23:12:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-20 23:12:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-20 23:12:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:12:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:12:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:12:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:12:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 23:12:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure simple_positive [2021-11-20 23:12:44,134 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_positive [2021-11-20 23:12:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-20 23:12:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-20 23:12:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure path_get [2021-11-20 23:12:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure path_get [2021-11-20 23:12:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure dget_dlock [2021-11-20 23:12:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dget_dlock [2021-11-20 23:12:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure d_lookup [2021-11-20 23:12:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure d_lookup [2021-11-20 23:12:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-20 23:12:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-20 23:12:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-20 23:12:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-20 23:12:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2021-11-20 23:12:44,136 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2021-11-20 23:12:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-20 23:12:44,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-20 23:12:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2021-11-20 23:12:44,137 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2021-11-20 23:12:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_mount [2021-11-20 23:12:44,137 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_mount [2021-11-20 23:12:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_indirect [2021-11-20 23:12:44,137 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_indirect [2021-11-20 23:12:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:12:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:12:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_wait [2021-11-20 23:12:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_wait [2021-11-20 23:12:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 23:12:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 23:12:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl [2021-11-20 23:12:44,139 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl [2021-11-20 23:12:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-20 23:12:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-20 23:12:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2021-11-20 23:12:44,141 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2021-11-20 23:12:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-20 23:12:44,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-20 23:12:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:12:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:12:44,141 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait_release [2021-11-20 23:12:44,142 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait_release [2021-11-20 23:12:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:12:44,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:12:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl_unlocked [2021-11-20 23:12:44,142 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl_unlocked [2021-11-20 23:12:44,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:12:44,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:12:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-20 23:12:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-20 23:12:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-20 23:12:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-20 23:12:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-20 23:12:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-20 23:12:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_compat_ioctl [2021-11-20 23:12:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_compat_ioctl [2021-11-20 23:12:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqretry [2021-11-20 23:12:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqretry [2021-11-20 23:12:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-20 23:12:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-20 23:12:44,144 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-20 23:12:44,144 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-20 23:12:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_readdir [2021-11-20 23:12:44,145 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_readdir [2021-11-20 23:12:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2021-11-20 23:12:44,145 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2021-11-20 23:12:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 23:12:44,145 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 23:12:44,145 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount_tree [2021-11-20 23:12:44,146 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount_tree [2021-11-20 23:12:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 23:12:44,146 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 23:12:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2021-11-20 23:12:44,146 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2021-11-20 23:12:44,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:12:44,146 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:12:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure get_task_pid [2021-11-20 23:12:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure get_task_pid [2021-11-20 23:12:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2021-11-20 23:12:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2021-11-20 23:12:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_busy [2021-11-20 23:12:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_busy [2021-11-20 23:12:44,147 INFO L130 BoogieDeclarations]: Found specification of procedure d_unhashed [2021-11-20 23:12:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure d_unhashed [2021-11-20 23:12:44,148 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-20 23:12:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-20 23:12:44,149 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_kill_sb [2021-11-20 23:12:44,153 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_kill_sb [2021-11-20 23:12:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:12:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:12:44,153 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:12:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2021-11-20 23:12:44,153 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2021-11-20 23:12:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-20 23:12:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-20 23:12:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_set_managed [2021-11-20 23:12:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_set_managed [2021-11-20 23:12:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:12:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-20 23:12:44,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-20 23:12:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-11-20 23:12:44,215 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-11-20 23:12:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-20 23:12:44,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-20 23:12:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:12:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-20 23:12:44,215 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-20 23:12:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 23:12:44,216 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 23:12:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure find_autofs_mount [2021-11-20 23:12:44,216 INFO L138 BoogieDeclarations]: Found implementation of procedure find_autofs_mount [2021-11-20 23:12:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-20 23:12:44,216 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-20 23:12:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:12:44,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:12:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_close [2021-11-20 23:12:44,216 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_close [2021-11-20 23:12:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure ns_of_pid [2021-11-20 23:12:44,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_of_pid [2021-11-20 23:12:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 23:12:44,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 23:12:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_55 [2021-11-20 23:12:44,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_55 [2021-11-20 23:12:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 23:12:44,217 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 23:12:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_clean_ino [2021-11-20 23:12:44,217 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_clean_ino [2021-11-20 23:12:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_49 [2021-11-20 23:12:44,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_49 [2021-11-20 23:12:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2021-11-20 23:12:44,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2021-11-20 23:12:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure kern_path_mountpoint [2021-11-20 23:12:44,218 INFO L138 BoogieDeclarations]: Found implementation of procedure kern_path_mountpoint [2021-11-20 23:12:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_positive_dentry [2021-11-20 23:12:44,218 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_positive_dentry [2021-11-20 23:12:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:12:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:12:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure __managed_dentry_set_managed [2021-11-20 23:12:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __managed_dentry_set_managed [2021-11-20 23:12:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait [2021-11-20 23:12:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait [2021-11-20 23:12:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_find_wait [2021-11-20 23:12:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_find_wait [2021-11-20 23:12:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-20 23:12:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-20 23:12:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-20 23:12:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-20 23:12:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:12:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_release [2021-11-20 23:12:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_release [2021-11-20 23:12:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp_nr [2021-11-20 23:12:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp_nr [2021-11-20 23:12:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:12:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:12:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2021-11-20 23:12:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2021-11-20 23:12:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_symlink [2021-11-20 23:12:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_symlink [2021-11-20 23:12:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2021-11-20 23:12:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2021-11-20 23:12:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_78 [2021-11-20 23:12:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_78 [2021-11-20 23:12:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2021-11-20 23:12:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2021-11-20 23:12:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-20 23:12:44,221 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-20 23:12:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure d_mountpoint [2021-11-20 23:12:44,222 INFO L138 BoogieDeclarations]: Found implementation of procedure d_mountpoint [2021-11-20 23:12:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-20 23:12:44,222 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-20 23:12:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure have_submounts [2021-11-20 23:12:44,222 INFO L138 BoogieDeclarations]: Found implementation of procedure have_submounts [2021-11-20 23:12:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-20 23:12:44,224 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-20 23:12:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-20 23:12:44,224 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-20 23:12:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-20 23:12:44,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-20 23:12:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 23:12:44,225 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 23:12:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_prepare_pipe [2021-11-20 23:12:44,225 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_prepare_pipe [2021-11-20 23:12:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:12:44,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:12:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_del_active [2021-11-20 23:12:44,226 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_del_active [2021-11-20 23:12:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-20 23:12:44,226 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-20 23:12:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:12:44,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:12:44,227 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-20 23:12:44,227 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-20 23:12:44,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:12:44,227 INFO L130 BoogieDeclarations]: Found specification of procedure d_add [2021-11-20 23:12:44,227 INFO L138 BoogieDeclarations]: Found implementation of procedure d_add [2021-11-20 23:12:44,227 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_catatonic_mode [2021-11-20 23:12:44,228 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_catatonic_mode [2021-11-20 23:12:44,228 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2021-11-20 23:12:44,228 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2021-11-20 23:12:44,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:12:44,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:12:44,228 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-20 23:12:44,228 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-11-20 23:12:44,229 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-11-20 23:12:45,526 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:12:45,531 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:12:45,754 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:12:46,567 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint switch_break: call ULTIMATE.dealloc(~#descriptor~12#1.base, ~#descriptor~12#1.offset);havoc ~#descriptor~12#1.base, ~#descriptor~12#1.offset; [2021-11-20 23:12:56,034 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:12:56,304 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:12:57,993 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:12:57,993 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-20 23:12:57,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:57 BoogieIcfgContainer [2021-11-20 23:12:57,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:12:58,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:12:58,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:12:58,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:12:58,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:38" (1/3) ... [2021-11-20 23:12:58,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfdb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:58, skipping insertion in model container [2021-11-20 23:12:58,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:43" (2/3) ... [2021-11-20 23:12:58,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfdb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:58, skipping insertion in model container [2021-11-20 23:12:58,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:57" (3/3) ... [2021-11-20 23:12:58,008 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-20 23:12:58,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:12:58,014 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-20 23:12:58,077 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:12:58,084 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:12:58,084 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-20 23:12:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 2633 states, 1548 states have (on average 1.3152454780361758) internal successors, (2036), 1601 states have internal predecessors, (2036), 917 states have call successors, (917), 165 states have call predecessors, (917), 164 states have return successors, (906), 900 states have call predecessors, (906), 906 states have call successors, (906) [2021-11-20 23:12:58,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-11-20 23:12:58,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:58,196 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:58,196 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-20 23:12:58,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:58,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1239138158, now seen corresponding path program 1 times [2021-11-20 23:12:58,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:58,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061514504] [2021-11-20 23:12:58,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:58,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-20 23:12:59,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:12:59,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061514504] [2021-11-20 23:12:59,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061514504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:12:59,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:12:59,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:12:59,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095598830] [2021-11-20 23:12:59,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:12:59,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:12:59,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:12:59,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:12:59,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:12:59,260 INFO L87 Difference]: Start difference. First operand has 2633 states, 1548 states have (on average 1.3152454780361758) internal successors, (2036), 1601 states have internal predecessors, (2036), 917 states have call successors, (917), 165 states have call predecessors, (917), 164 states have return successors, (906), 900 states have call predecessors, (906), 906 states have call successors, (906) Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-20 23:13:01,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:04,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:05,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:05,803 INFO L93 Difference]: Finished difference Result 7432 states and 11199 transitions. [2021-11-20 23:13:05,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:05,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 465 [2021-11-20 23:13:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:05,881 INFO L225 Difference]: With dead ends: 7432 [2021-11-20 23:13:05,881 INFO L226 Difference]: Without dead ends: 4872 [2021-11-20 23:13:05,915 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:13:05,922 INFO L933 BasicCegarLoop]: 4810 mSDtfsCounter, 3327 mSDsluCounter, 3762 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 8201 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:05,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3331 Valid, 8201 Invalid, 900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 887 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-20 23:13:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2021-11-20 23:13:06,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4865. [2021-11-20 23:13:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4865 states, 2874 states have (on average 1.3072372999304105) internal successors, (3757), 2967 states have internal predecessors, (3757), 1668 states have call successors, (1668), 320 states have call predecessors, (1668), 319 states have return successors, (1668), 1652 states have call predecessors, (1668), 1664 states have call successors, (1668) [2021-11-20 23:13:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4865 states to 4865 states and 7093 transitions. [2021-11-20 23:13:06,418 INFO L78 Accepts]: Start accepts. Automaton has 4865 states and 7093 transitions. Word has length 465 [2021-11-20 23:13:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:06,425 INFO L470 AbstractCegarLoop]: Abstraction has 4865 states and 7093 transitions. [2021-11-20 23:13:06,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-20 23:13:06,431 INFO L276 IsEmpty]: Start isEmpty. Operand 4865 states and 7093 transitions. [2021-11-20 23:13:06,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2021-11-20 23:13:06,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:06,454 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:06,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:13:06,454 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-20 23:13:06,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash 238087791, now seen corresponding path program 1 times [2021-11-20 23:13:06,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:06,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472352126] [2021-11-20 23:13:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:06,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-20 23:13:07,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:07,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472352126] [2021-11-20 23:13:07,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472352126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:07,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:07,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:07,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479440936] [2021-11-20 23:13:07,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:07,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:07,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:07,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:07,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:07,181 INFO L87 Difference]: Start difference. First operand 4865 states and 7093 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-20 23:13:09,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:11,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:14,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:15,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:15,764 INFO L93 Difference]: Finished difference Result 11811 states and 17191 transitions. [2021-11-20 23:13:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:15,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 480 [2021-11-20 23:13:15,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:15,840 INFO L225 Difference]: With dead ends: 11811 [2021-11-20 23:13:15,840 INFO L226 Difference]: Without dead ends: 7035 [2021-11-20 23:13:15,871 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:13:15,873 INFO L933 BasicCegarLoop]: 4778 mSDtfsCounter, 3226 mSDsluCounter, 3754 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3233 SdHoareTripleChecker+Valid, 8159 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:15,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3233 Valid, 8159 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 3 Unknown, 0 Unchecked, 8.1s Time] [2021-11-20 23:13:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7035 states. [2021-11-20 23:13:16,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7035 to 7006. [2021-11-20 23:13:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7006 states, 4149 states have (on average 1.3056158110388045) internal successors, (5417), 4287 states have internal predecessors, (5417), 2374 states have call successors, (2374), 480 states have call predecessors, (2374), 479 states have return successors, (2385), 2348 states have call predecessors, (2385), 2370 states have call successors, (2385) [2021-11-20 23:13:16,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7006 states to 7006 states and 10176 transitions. [2021-11-20 23:13:16,388 INFO L78 Accepts]: Start accepts. Automaton has 7006 states and 10176 transitions. Word has length 480 [2021-11-20 23:13:16,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:16,390 INFO L470 AbstractCegarLoop]: Abstraction has 7006 states and 10176 transitions. [2021-11-20 23:13:16,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-20 23:13:16,391 INFO L276 IsEmpty]: Start isEmpty. Operand 7006 states and 10176 transitions. [2021-11-20 23:13:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2021-11-20 23:13:16,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:16,405 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:16,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:13:16,406 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-20 23:13:16,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:16,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1914525451, now seen corresponding path program 1 times [2021-11-20 23:13:16,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:16,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879080856] [2021-11-20 23:13:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:16,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-20 23:13:16,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:16,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879080856] [2021-11-20 23:13:16,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879080856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:16,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:16,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:16,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854858292] [2021-11-20 23:13:16,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:16,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:16,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:16,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:16,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:16,831 INFO L87 Difference]: Start difference. First operand 7006 states and 10176 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-20 23:13:19,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:22,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:23,279 INFO L93 Difference]: Finished difference Result 17914 states and 25959 transitions. [2021-11-20 23:13:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:23,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 481 [2021-11-20 23:13:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:23,379 INFO L225 Difference]: With dead ends: 17914 [2021-11-20 23:13:23,380 INFO L226 Difference]: Without dead ends: 10997 [2021-11-20 23:13:23,424 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:13:23,425 INFO L933 BasicCegarLoop]: 4192 mSDtfsCounter, 3100 mSDsluCounter, 3756 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3102 SdHoareTripleChecker+Valid, 7574 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:23,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3102 Valid, 7574 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 836 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-20 23:13:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10997 states. [2021-11-20 23:13:24,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10997 to 10972. [2021-11-20 23:13:24,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10972 states, 6492 states have (on average 1.3011398644485521) internal successors, (8447), 6717 states have internal predecessors, (8447), 3691 states have call successors, (3691), 786 states have call predecessors, (3691), 785 states have return successors, (3719), 3646 states have call predecessors, (3719), 3687 states have call successors, (3719) [2021-11-20 23:13:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10972 states to 10972 states and 15857 transitions. [2021-11-20 23:13:24,417 INFO L78 Accepts]: Start accepts. Automaton has 10972 states and 15857 transitions. Word has length 481 [2021-11-20 23:13:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:24,420 INFO L470 AbstractCegarLoop]: Abstraction has 10972 states and 15857 transitions. [2021-11-20 23:13:24,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-20 23:13:24,421 INFO L276 IsEmpty]: Start isEmpty. Operand 10972 states and 15857 transitions. [2021-11-20 23:13:24,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2021-11-20 23:13:24,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:24,439 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:24,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:13:24,440 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-20 23:13:24,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:24,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1491294399, now seen corresponding path program 1 times [2021-11-20 23:13:24,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:24,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096077973] [2021-11-20 23:13:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:24,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-20 23:13:24,893 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:24,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096077973] [2021-11-20 23:13:24,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096077973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:24,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:24,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:24,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219475918] [2021-11-20 23:13:24,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:24,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:24,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:24,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:24,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:24,898 INFO L87 Difference]: Start difference. First operand 10972 states and 15857 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-20 23:13:28,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:30,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:32,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:33,729 INFO L93 Difference]: Finished difference Result 29393 states and 42353 transitions. [2021-11-20 23:13:33,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:33,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 480 [2021-11-20 23:13:33,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:33,862 INFO L225 Difference]: With dead ends: 29393 [2021-11-20 23:13:33,862 INFO L226 Difference]: Without dead ends: 18510 [2021-11-20 23:13:34,111 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:13:34,112 INFO L933 BasicCegarLoop]: 4159 mSDtfsCounter, 2996 mSDsluCounter, 3789 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 7568 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:34,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3000 Valid, 7568 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 806 Invalid, 3 Unknown, 0 Unchecked, 8.2s Time] [2021-11-20 23:13:34,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18510 states. [2021-11-20 23:13:34,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18510 to 18477. [2021-11-20 23:13:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18477 states, 10920 states have (on average 1.2984432234432235) internal successors, (14179), 11285 states have internal predecessors, (14179), 6163 states have call successors, (6163), 1391 states have call predecessors, (6163), 1390 states have return successors, (6225), 6087 states have call predecessors, (6225), 6159 states have call successors, (6225) [2021-11-20 23:13:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18477 states to 18477 states and 26567 transitions. [2021-11-20 23:13:35,066 INFO L78 Accepts]: Start accepts. Automaton has 18477 states and 26567 transitions. Word has length 480 [2021-11-20 23:13:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:35,067 INFO L470 AbstractCegarLoop]: Abstraction has 18477 states and 26567 transitions. [2021-11-20 23:13:35,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-20 23:13:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 18477 states and 26567 transitions. [2021-11-20 23:13:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2021-11-20 23:13:35,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:35,190 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:35,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:13:35,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-20 23:13:35,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:35,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1285759269, now seen corresponding path program 1 times [2021-11-20 23:13:35,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:35,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358171260] [2021-11-20 23:13:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:35,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7660 trivial. 0 not checked. [2021-11-20 23:13:35,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:35,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358171260] [2021-11-20 23:13:35,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358171260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:35,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:35,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:35,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138156013] [2021-11-20 23:13:35,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:35,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:35,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:35,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:35,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:35,512 INFO L87 Difference]: Start difference. First operand 18477 states and 26567 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-20 23:13:37,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:39,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:43,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:44,089 INFO L93 Difference]: Finished difference Result 50301 states and 72202 transitions. [2021-11-20 23:13:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:44,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 484 [2021-11-20 23:13:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:44,272 INFO L225 Difference]: With dead ends: 50301 [2021-11-20 23:13:44,272 INFO L226 Difference]: Without dead ends: 31913 [2021-11-20 23:13:44,342 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:13:44,343 INFO L933 BasicCegarLoop]: 4169 mSDtfsCounter, 2963 mSDsluCounter, 3777 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2965 SdHoareTripleChecker+Valid, 7571 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:44,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2965 Valid, 7571 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 815 Invalid, 3 Unknown, 0 Unchecked, 7.8s Time] [2021-11-20 23:13:44,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31913 states. [2021-11-20 23:13:46,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31913 to 31873. [2021-11-20 23:13:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31873 states, 18859 states have (on average 1.2975767538045495) internal successors, (24471), 19456 states have internal predecessors, (24471), 10548 states have call successors, (10548), 2463 states have call predecessors, (10548), 2462 states have return successors, (10660), 10393 states have call predecessors, (10660), 10544 states have call successors, (10660) [2021-11-20 23:13:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31873 states to 31873 states and 45679 transitions. [2021-11-20 23:13:46,319 INFO L78 Accepts]: Start accepts. Automaton has 31873 states and 45679 transitions. Word has length 484 [2021-11-20 23:13:46,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:46,320 INFO L470 AbstractCegarLoop]: Abstraction has 31873 states and 45679 transitions. [2021-11-20 23:13:46,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-20 23:13:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 31873 states and 45679 transitions. [2021-11-20 23:13:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2021-11-20 23:13:46,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:46,329 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:46,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:13:46,329 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-20 23:13:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:46,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1848928181, now seen corresponding path program 1 times [2021-11-20 23:13:46,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:13:46,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684092485] [2021-11-20 23:13:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:46,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:13:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7658 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7658 trivial. 0 not checked. [2021-11-20 23:13:46,689 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:13:46,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684092485] [2021-11-20 23:13:46,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684092485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:46,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:46,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:13:46,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754580129] [2021-11-20 23:13:46,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:46,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:13:46,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:13:46,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:13:46,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:13:46,692 INFO L87 Difference]: Start difference. First operand 31873 states and 45679 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-20 23:13:49,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:51,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:54,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:57,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:59,183 INFO L93 Difference]: Finished difference Result 85703 states and 122599 transitions. [2021-11-20 23:13:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:13:59,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 507 [2021-11-20 23:13:59,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:59,798 INFO L225 Difference]: With dead ends: 85703 [2021-11-20 23:13:59,798 INFO L226 Difference]: Without dead ends: 53919 [2021-11-20 23:13:59,935 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:13:59,937 INFO L933 BasicCegarLoop]: 5173 mSDtfsCounter, 3247 mSDsluCounter, 3755 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3249 SdHoareTripleChecker+Valid, 8558 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:59,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3249 Valid, 8558 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 944 Invalid, 4 Unknown, 0 Unchecked, 11.0s Time] [2021-11-20 23:14:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53919 states. [2021-11-20 23:14:02,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53919 to 53847. [2021-11-20 23:14:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53847 states, 32017 states have (on average 1.2956554330511916) internal successors, (41483), 33065 states have internal predecessors, (41483), 17535 states have call successors, (17535), 4304 states have call predecessors, (17535), 4291 states have return successors, (17789), 17243 states have call predecessors, (17789), 17531 states have call successors, (17789) [2021-11-20 23:14:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53847 states to 53847 states and 76807 transitions. [2021-11-20 23:14:03,595 INFO L78 Accepts]: Start accepts. Automaton has 53847 states and 76807 transitions. Word has length 507 [2021-11-20 23:14:03,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:03,597 INFO L470 AbstractCegarLoop]: Abstraction has 53847 states and 76807 transitions. [2021-11-20 23:14:03,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-20 23:14:03,598 INFO L276 IsEmpty]: Start isEmpty. Operand 53847 states and 76807 transitions. [2021-11-20 23:14:03,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2021-11-20 23:14:03,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:03,609 INFO L514 BasicCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:03,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:14:03,612 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-20 23:14:03,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:03,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2127335379, now seen corresponding path program 1 times [2021-11-20 23:14:03,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:03,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029582101] [2021-11-20 23:14:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:03,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7963 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2021-11-20 23:14:04,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:04,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029582101] [2021-11-20 23:14:04,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029582101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:04,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:04,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:04,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258655960] [2021-11-20 23:14:04,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:04,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:04,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:04,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:04,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:04,233 INFO L87 Difference]: Start difference. First operand 53847 states and 76807 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-20 23:14:07,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:10,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:12,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:12,643 INFO L93 Difference]: Finished difference Result 55115 states and 78552 transitions. [2021-11-20 23:14:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:12,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 515 [2021-11-20 23:14:12,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:12,944 INFO L225 Difference]: With dead ends: 55115 [2021-11-20 23:14:12,945 INFO L226 Difference]: Without dead ends: 55113 [2021-11-20 23:14:12,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:12,973 INFO L933 BasicCegarLoop]: 4491 mSDtfsCounter, 3406 mSDsluCounter, 11924 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3418 SdHoareTripleChecker+Valid, 15281 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:12,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3418 Valid, 15281 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1618 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2021-11-20 23:14:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55113 states. [2021-11-20 23:14:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55113 to 55106. [2021-11-20 23:14:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55106 states, 32732 states have (on average 1.2949407307833314) internal successors, (42386), 33808 states have internal predecessors, (42386), 17950 states have call successors, (17950), 4431 states have call predecessors, (17950), 4420 states have return successors, (18210), 17655 states have call predecessors, (18210), 17946 states have call successors, (18210) [2021-11-20 23:14:15,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55106 states to 55106 states and 78546 transitions. [2021-11-20 23:14:15,698 INFO L78 Accepts]: Start accepts. Automaton has 55106 states and 78546 transitions. Word has length 515 [2021-11-20 23:14:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:15,700 INFO L470 AbstractCegarLoop]: Abstraction has 55106 states and 78546 transitions. [2021-11-20 23:14:15,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-20 23:14:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 55106 states and 78546 transitions. [2021-11-20 23:14:15,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2021-11-20 23:14:15,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:15,711 INFO L514 BasicCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:15,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:14:15,711 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-20 23:14:15,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash 851809935, now seen corresponding path program 1 times [2021-11-20 23:14:15,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:15,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790559732] [2021-11-20 23:14:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:15,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2021-11-20 23:14:16,259 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:16,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790559732] [2021-11-20 23:14:16,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790559732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:16,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:16,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:16,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315086369] [2021-11-20 23:14:16,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:16,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:16,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:16,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:16,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:16,262 INFO L87 Difference]: Start difference. First operand 55106 states and 78546 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-20 23:14:18,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:23,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:25,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:25,620 INFO L93 Difference]: Finished difference Result 97623 states and 138615 transitions. [2021-11-20 23:14:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:14:25,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 520 [2021-11-20 23:14:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:26,162 INFO L225 Difference]: With dead ends: 97623 [2021-11-20 23:14:26,162 INFO L226 Difference]: Without dead ends: 97621 [2021-11-20 23:14:26,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:26,206 INFO L933 BasicCegarLoop]: 4502 mSDtfsCounter, 2975 mSDsluCounter, 13330 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2984 SdHoareTripleChecker+Valid, 16555 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:26,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2984 Valid, 16555 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1745 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-11-20 23:14:26,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97621 states. [2021-11-20 23:14:29,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97621 to 97584. [2021-11-20 23:14:29,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97584 states, 58149 states have (on average 1.2936765894512374) internal successors, (75226), 60165 states have internal predecessors, (75226), 31251 states have call successors, (31251), 8262 states have call predecessors, (31251), 8180 states have return successors, (32102), 30483 states have call predecessors, (32102), 31243 states have call successors, (32102) [2021-11-20 23:14:30,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97584 states to 97584 states and 138579 transitions. [2021-11-20 23:14:30,613 INFO L78 Accepts]: Start accepts. Automaton has 97584 states and 138579 transitions. Word has length 520 [2021-11-20 23:14:30,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:30,615 INFO L470 AbstractCegarLoop]: Abstraction has 97584 states and 138579 transitions. [2021-11-20 23:14:30,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-20 23:14:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 97584 states and 138579 transitions. [2021-11-20 23:14:30,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-11-20 23:14:30,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:30,629 INFO L514 BasicCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:30,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:14:30,630 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-20 23:14:30,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:30,631 INFO L85 PathProgramCache]: Analyzing trace with hash 737359149, now seen corresponding path program 1 times [2021-11-20 23:14:30,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:30,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902388887] [2021-11-20 23:14:30,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:30,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7971 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7967 trivial. 0 not checked. [2021-11-20 23:14:31,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:31,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902388887] [2021-11-20 23:14:31,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902388887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:31,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:31,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:31,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687333658] [2021-11-20 23:14:31,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:31,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:31,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:31,506 INFO L87 Difference]: Start difference. First operand 97584 states and 138579 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-20 23:14:34,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:36,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:39,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:42,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:42,455 INFO L93 Difference]: Finished difference Result 97601 states and 138592 transitions. [2021-11-20 23:14:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:42,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 525 [2021-11-20 23:14:42,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:42,977 INFO L225 Difference]: With dead ends: 97601 [2021-11-20 23:14:42,978 INFO L226 Difference]: Without dead ends: 97599 [2021-11-20 23:14:43,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:43,025 INFO L933 BasicCegarLoop]: 4373 mSDtfsCounter, 3401 mSDsluCounter, 11660 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3411 SdHoareTripleChecker+Valid, 14921 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:43,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3411 Valid, 14921 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1584 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2021-11-20 23:14:43,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97599 states. [2021-11-20 23:14:46,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97599 to 97592. [2021-11-20 23:14:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97592 states, 58155 states have (on average 1.2936462900868368) internal successors, (75232), 60171 states have internal predecessors, (75232), 31251 states have call successors, (31251), 8264 states have call predecessors, (31251), 8182 states have return successors, (32102), 30483 states have call predecessors, (32102), 31243 states have call successors, (32102) [2021-11-20 23:14:47,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97592 states to 97592 states and 138585 transitions. [2021-11-20 23:14:47,377 INFO L78 Accepts]: Start accepts. Automaton has 97592 states and 138585 transitions. Word has length 525 [2021-11-20 23:14:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:47,379 INFO L470 AbstractCegarLoop]: Abstraction has 97592 states and 138585 transitions. [2021-11-20 23:14:47,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-20 23:14:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 97592 states and 138585 transitions. [2021-11-20 23:14:47,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2021-11-20 23:14:47,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:47,393 INFO L514 BasicCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:47,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:14:47,393 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-20 23:14:47,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:47,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1840045809, now seen corresponding path program 1 times [2021-11-20 23:14:47,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:47,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869271375] [2021-11-20 23:14:47,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:47,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7981 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7975 trivial. 0 not checked. [2021-11-20 23:14:48,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:48,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869271375] [2021-11-20 23:14:48,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869271375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:48,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:48,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:48,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437595719] [2021-11-20 23:14:48,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:48,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:48,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:48,338 INFO L87 Difference]: Start difference. First operand 97592 states and 138585 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-20 23:14:50,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:54,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:14:57,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:57,687 INFO L93 Difference]: Finished difference Result 97609 states and 138598 transitions. [2021-11-20 23:14:57,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:57,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 530 [2021-11-20 23:14:57,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:58,099 INFO L225 Difference]: With dead ends: 97609 [2021-11-20 23:14:58,100 INFO L226 Difference]: Without dead ends: 97607 [2021-11-20 23:14:58,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:14:58,139 INFO L933 BasicCegarLoop]: 4373 mSDtfsCounter, 3401 mSDsluCounter, 11660 mSDsCounter, 0 mSdLazyCounter, 1585 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3410 SdHoareTripleChecker+Valid, 14921 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1585 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:58,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3410 Valid, 14921 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1585 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-11-20 23:14:58,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97607 states. [2021-11-20 23:15:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97607 to 97600. [2021-11-20 23:15:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97600 states, 58161 states have (on average 1.2936159969739172) internal successors, (75238), 60177 states have internal predecessors, (75238), 31251 states have call successors, (31251), 8266 states have call predecessors, (31251), 8184 states have return successors, (32102), 30483 states have call predecessors, (32102), 31243 states have call successors, (32102) [2021-11-20 23:15:02,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97600 states to 97600 states and 138591 transitions. [2021-11-20 23:15:02,968 INFO L78 Accepts]: Start accepts. Automaton has 97600 states and 138591 transitions. Word has length 530 [2021-11-20 23:15:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:15:02,970 INFO L470 AbstractCegarLoop]: Abstraction has 97600 states and 138591 transitions. [2021-11-20 23:15:02,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-20 23:15:02,971 INFO L276 IsEmpty]: Start isEmpty. Operand 97600 states and 138591 transitions. [2021-11-20 23:15:02,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2021-11-20 23:15:02,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:15:02,992 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:15:02,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:15:02,993 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-20 23:15:02,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:15:02,994 INFO L85 PathProgramCache]: Analyzing trace with hash 926978812, now seen corresponding path program 1 times [2021-11-20 23:15:02,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:15:02,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867933236] [2021-11-20 23:15:02,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:15:02,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:15:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:15:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8095 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8087 trivial. 0 not checked. [2021-11-20 23:15:03,901 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:15:03,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867933236] [2021-11-20 23:15:03,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867933236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:15:03,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:15:03,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:15:03,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716741358] [2021-11-20 23:15:03,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:15:03,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:15:03,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:15:03,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:15:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:15:03,904 INFO L87 Difference]: Start difference. First operand 97600 states and 138591 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-20 23:15:06,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:15:11,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []