./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7 --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 4035b79a2162ba317b65ff4b4b50beff318d26f8217214f4a55e9e0e820898d1 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:59:38,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:59:38,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:59:38,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:59:38,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:59:38,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:59:38,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:59:38,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:59:38,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:59:38,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:59:38,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:59:38,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:59:38,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:59:38,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:59:38,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:59:38,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:59:38,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:59:38,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:59:38,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:59:38,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:59:38,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:59:38,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:59:38,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:59:38,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:59:38,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:59:38,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:59:38,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:59:38,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:59:38,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:59:38,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:59:38,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:59:38,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:59:38,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:59:38,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:59:38,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:59:38,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:59:38,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:59:38,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:59:38,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:59:38,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:59:38,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:59:38,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:59:38,600 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:59:38,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:59:38,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:59:38,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:59:38,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:59:38,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:59:38,608 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:59:38,609 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:59:38,609 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:59:38,609 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:59:38,610 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:59:38,610 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:59:38,611 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:59:38,611 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:59:38,611 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:59:38,611 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:59:38,612 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:59:38,612 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:59:38,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:59:38,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:59:38,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:59:38,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:59:38,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:59:38,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:59:38,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:59:38,614 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:59:38,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:59:38,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:59:38,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:59:38,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:59:38,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:59:38,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:59:38,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:59:38,618 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:59:38,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:59:38,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:59:38,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:59:38,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:59:38,619 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_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4035b79a2162ba317b65ff4b4b50beff318d26f8217214f4a55e9e0e820898d1 [2021-11-25 18:59:38,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:59:38,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:59:38,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:59:38,940 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:59:38,941 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:59:38,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-25 18:59:39,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/data/5a39c220f/dd194a61a14f4e2ca8c72f914ab2764c/FLAGf1065e4dc [2021-11-25 18:59:40,146 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:59:40,147 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-25 18:59:40,209 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/data/5a39c220f/dd194a61a14f4e2ca8c72f914ab2764c/FLAGf1065e4dc [2021-11-25 18:59:40,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/data/5a39c220f/dd194a61a14f4e2ca8c72f914ab2764c [2021-11-25 18:59:40,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:59:40,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:59:40,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:59:40,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:59:40,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:59:40,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:59:40" (1/1) ... [2021-11-25 18:59:40,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15698c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:40, skipping insertion in model container [2021-11-25 18:59:40,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:59:40" (1/1) ... [2021-11-25 18:59:40,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:59:40,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:59:44,292 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_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2021-11-25 18:59:44,296 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_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2021-11-25 18:59:44,297 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_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2021-11-25 18:59:44,298 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_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2021-11-25 18:59:44,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:59:44,425 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:59:45,011 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_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2021-11-25 18:59:45,011 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_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2021-11-25 18:59:45,012 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_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2021-11-25 18:59:45,016 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_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2021-11-25 18:59:45,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:59:45,254 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:59:45,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:45 WrapperNode [2021-11-25 18:59:45,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:59:45,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:59:45,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:59:45,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:59:45,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:45" (1/1) ... [2021-11-25 18:59:45,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:45" (1/1) ... [2021-11-25 18:59:45,727 INFO L137 Inliner]: procedures = 518, calls = 3478, calls flagged for inlining = 278, calls inlined = 255, statements flattened = 8982 [2021-11-25 18:59:45,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:59:45,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:59:45,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:59:45,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:59:45,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:45" (1/1) ... [2021-11-25 18:59:45,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:45" (1/1) ... [2021-11-25 18:59:45,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:45" (1/1) ... [2021-11-25 18:59:45,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:45" (1/1) ... [2021-11-25 18:59:46,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:45" (1/1) ... [2021-11-25 18:59:46,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:45" (1/1) ... [2021-11-25 18:59:46,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:45" (1/1) ... [2021-11-25 18:59:46,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:59:46,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:59:46,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:59:46,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:59:46,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:45" (1/1) ... [2021-11-25 18:59:46,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:59:46,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:46,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:59:46,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea5d005-d24a-4fcd-b70e-9ceb6d8d61ad/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:59:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_evict_inode [2021-11-25 18:59:46,295 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_evict_inode [2021-11-25 18:59:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2021-11-25 18:59:46,296 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2021-11-25 18:59:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:59:46,296 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:59:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_unlink [2021-11-25 18:59:46,296 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_unlink [2021-11-25 18:59:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wq_mutex_of_autofs_sb_info [2021-11-25 18:59:46,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wq_mutex_of_autofs_sb_info [2021-11-25 18:59:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_get_inode [2021-11-25 18:59:46,297 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_get_inode [2021-11-25 18:59:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-25 18:59:46,297 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-25 18:59:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:59:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:59:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_lseek [2021-11-25 18:59:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_lseek [2021-11-25 18:59:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure do_expire_wait [2021-11-25 18:59:46,298 INFO L138 BoogieDeclarations]: Found implementation of procedure do_expire_wait [2021-11-25 18:59:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-25 18:59:46,299 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-25 18:59:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2021-11-25 18:59:46,299 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2021-11-25 18:59:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2021-11-25 18:59:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2021-11-25 18:59:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure current_kernel_time [2021-11-25 18:59:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure current_kernel_time [2021-11-25 18:59:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_indirect [2021-11-25 18:59:46,300 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_indirect [2021-11-25 18:59:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2021-11-25 18:59:46,301 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2021-11-25 18:59:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_clear_managed [2021-11-25 18:59:46,301 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_clear_managed [2021-11-25 18:59:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:59:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:59:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure from_kgid_munged [2021-11-25 18:59:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kgid_munged [2021-11-25 18:59:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure follow_down_one [2021-11-25 18:59:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure follow_down_one [2021-11-25 18:59:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_show_options [2021-11-25 18:59:46,303 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_show_options [2021-11-25 18:59:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure __autofs4_add_expiring [2021-11-25 18:59:46,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __autofs4_add_expiring [2021-11-25 18:59:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 18:59:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_wait [2021-11-25 18:59:46,305 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_wait [2021-11-25 18:59:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl [2021-11-25 18:59:46,306 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl [2021-11-25 18:59:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:59:46,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:59:46,307 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-25 18:59:46,307 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-25 18:59:46,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:59:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:59:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 18:59:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-25 18:59:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 18:59:46,308 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 18:59:46,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:59:46,309 INFO L130 BoogieDeclarations]: Found specification of procedure d_count [2021-11-25 18:59:46,309 INFO L138 BoogieDeclarations]: Found implementation of procedure d_count [2021-11-25 18:59:46,309 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-25 18:59:46,309 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-25 18:59:46,309 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___4 [2021-11-25 18:59:46,309 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___4 [2021-11-25 18:59:46,310 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___2 [2021-11-25 18:59:46,310 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___2 [2021-11-25 18:59:46,311 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2021-11-25 18:59:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2021-11-25 18:59:46,311 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 18:59:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 18:59:46,311 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 18:59:46,311 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 18:59:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-25 18:59:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-25 18:59:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_oz_mode [2021-11-25 18:59:46,312 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_oz_mode [2021-11-25 18:59:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_do_expire_multi [2021-11-25 18:59:46,313 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_do_expire_multi [2021-11-25 18:59:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure __task_pid_nr_ns [2021-11-25 18:59:46,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __task_pid_nr_ns [2021-11-25 18:59:46,314 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 18:59:46,314 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 18:59:46,315 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_sbi [2021-11-25 18:59:46,315 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_sbi [2021-11-25 18:59:46,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:59:46,316 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 18:59:46,316 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 18:59:46,316 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_new_ino [2021-11-25 18:59:46,316 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_new_ino [2021-11-25 18:59:46,317 INFO L130 BoogieDeclarations]: Found specification of procedure simple_empty [2021-11-25 18:59:46,317 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_empty [2021-11-25 18:59:46,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:59:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:59:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:59:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_can_expire [2021-11-25 18:59:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_can_expire [2021-11-25 18:59:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_ino [2021-11-25 18:59:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_ino [2021-11-25 18:59:46,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:59:46,319 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2021-11-25 18:59:46,319 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2021-11-25 18:59:46,319 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_open [2021-11-25 18:59:46,320 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_open [2021-11-25 18:59:46,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:59:46,323 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:59:46,323 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_rmdir [2021-11-25 18:59:46,323 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_rmdir [2021-11-25 18:59:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount [2021-11-25 18:59:46,324 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount [2021-11-25 18:59:46,324 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl_exit [2021-11-25 18:59:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl_exit [2021-11-25 18:59:46,325 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-25 18:59:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-25 18:59:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:59:46,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:59:46,331 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_open [2021-11-25 18:59:46,331 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_open [2021-11-25 18:59:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-25 18:59:46,332 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-25 18:59:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure clear_nlink [2021-11-25 18:59:46,332 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_nlink [2021-11-25 18:59:46,332 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_trigger [2021-11-25 18:59:46,332 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_trigger [2021-11-25 18:59:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:59:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-25 18:59:46,333 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-25 18:59:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:59:46,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:59:46,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:59:46,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:59:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-25 18:59:46,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-25 18:59:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 18:59:46,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 18:59:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-25 18:59:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-25 18:59:46,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-25 18:59:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:59:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:59:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:59:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:59:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 18:59:46,335 INFO L130 BoogieDeclarations]: Found specification of procedure simple_positive [2021-11-25 18:59:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_positive [2021-11-25 18:59:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-25 18:59:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-25 18:59:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure path_get [2021-11-25 18:59:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure path_get [2021-11-25 18:59:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure dget_dlock [2021-11-25 18:59:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure dget_dlock [2021-11-25 18:59:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure d_lookup [2021-11-25 18:59:46,337 INFO L138 BoogieDeclarations]: Found implementation of procedure d_lookup [2021-11-25 18:59:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-25 18:59:46,337 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-25 18:59:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2021-11-25 18:59:46,337 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2021-11-25 18:59:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-25 18:59:46,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-25 18:59:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2021-11-25 18:59:46,338 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2021-11-25 18:59:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_mount [2021-11-25 18:59:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_mount [2021-11-25 18:59:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_indirect [2021-11-25 18:59:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_indirect [2021-11-25 18:59:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:59:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:59:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_wait [2021-11-25 18:59:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_wait [2021-11-25 18:59:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 18:59:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 18:59:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl [2021-11-25 18:59:46,340 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl [2021-11-25 18:59:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-25 18:59:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-25 18:59:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2021-11-25 18:59:46,341 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2021-11-25 18:59:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-25 18:59:46,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-25 18:59:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:59:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:59:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait_release [2021-11-25 18:59:46,344 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait_release [2021-11-25 18:59:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:59:46,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:59:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl_unlocked [2021-11-25 18:59:46,344 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl_unlocked [2021-11-25 18:59:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-25 18:59:46,345 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-25 18:59:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp [2021-11-25 18:59:46,345 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp [2021-11-25 18:59:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-25 18:59:46,345 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-25 18:59:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_compat_ioctl [2021-11-25 18:59:46,345 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_compat_ioctl [2021-11-25 18:59:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqretry [2021-11-25 18:59:46,346 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqretry [2021-11-25 18:59:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-25 18:59:46,346 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-25 18:59:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_readdir [2021-11-25 18:59:46,346 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_readdir [2021-11-25 18:59:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2021-11-25 18:59:46,347 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2021-11-25 18:59:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pipe_mutex_of_autofs_sb_info [2021-11-25 18:59:46,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pipe_mutex_of_autofs_sb_info [2021-11-25 18:59:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount_tree [2021-11-25 18:59:46,347 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount_tree [2021-11-25 18:59:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 18:59:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 18:59:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2021-11-25 18:59:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2021-11-25 18:59:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:59:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:59:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure get_task_pid [2021-11-25 18:59:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure get_task_pid [2021-11-25 18:59:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2021-11-25 18:59:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2021-11-25 18:59:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_busy [2021-11-25 18:59:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_busy [2021-11-25 18:59:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure d_unhashed [2021-11-25 18:59:46,349 INFO L138 BoogieDeclarations]: Found implementation of procedure d_unhashed [2021-11-25 18:59:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 18:59:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 18:59:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_kill_sb [2021-11-25 18:59:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_kill_sb [2021-11-25 18:59:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:59:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:59:46,350 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:59:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2021-11-25 18:59:46,351 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2021-11-25 18:59:46,351 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-25 18:59:46,352 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-25 18:59:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_set_managed [2021-11-25 18:59:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_set_managed [2021-11-25 18:59:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:59:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-25 18:59:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-25 18:59:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-11-25 18:59:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-11-25 18:59:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-25 18:59:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-25 18:59:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:59:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 18:59:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 18:59:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 18:59:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 18:59:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure find_autofs_mount [2021-11-25 18:59:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure find_autofs_mount [2021-11-25 18:59:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 18:59:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 18:59:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_wq_mutex_of_autofs_sb_info [2021-11-25 18:59:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_wq_mutex_of_autofs_sb_info [2021-11-25 18:59:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:59:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:59:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_close [2021-11-25 18:59:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_close [2021-11-25 18:59:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure ns_of_pid [2021-11-25 18:59:46,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_of_pid [2021-11-25 18:59:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 18:59:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 18:59:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 18:59:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 18:59:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_clean_ino [2021-11-25 18:59:46,361 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_clean_ino [2021-11-25 18:59:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wq_mutex_of_autofs_sb_info [2021-11-25 18:59:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wq_mutex_of_autofs_sb_info [2021-11-25 18:59:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 18:59:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-25 18:59:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure kern_path_mountpoint [2021-11-25 18:59:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure kern_path_mountpoint [2021-11-25 18:59:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_positive_dentry [2021-11-25 18:59:46,362 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_positive_dentry [2021-11-25 18:59:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:59:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:59:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure __managed_dentry_set_managed [2021-11-25 18:59:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __managed_dentry_set_managed [2021-11-25 18:59:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 18:59:46,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-25 18:59:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait [2021-11-25 18:59:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait [2021-11-25 18:59:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_find_wait [2021-11-25 18:59:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_find_wait [2021-11-25 18:59:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-25 18:59:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-25 18:59:46,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-25 18:59:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-25 18:59:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:59:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_release [2021-11-25 18:59:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_release [2021-11-25 18:59:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp_nr [2021-11-25 18:59:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp_nr [2021-11-25 18:59:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:59:46,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:59:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2021-11-25 18:59:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2021-11-25 18:59:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_symlink [2021-11-25 18:59:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_symlink [2021-11-25 18:59:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2021-11-25 18:59:46,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2021-11-25 18:59:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2021-11-25 18:59:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2021-11-25 18:59:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 18:59:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 18:59:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure d_mountpoint [2021-11-25 18:59:46,367 INFO L138 BoogieDeclarations]: Found implementation of procedure d_mountpoint [2021-11-25 18:59:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-25 18:59:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-25 18:59:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure have_submounts [2021-11-25 18:59:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure have_submounts [2021-11-25 18:59:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-25 18:59:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-25 18:59:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-25 18:59:46,368 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-25 18:59:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 18:59:46,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 18:59:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 18:59:46,369 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 18:59:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_prepare_pipe [2021-11-25 18:59:46,369 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_prepare_pipe [2021-11-25 18:59:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:59:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:59:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_del_active [2021-11-25 18:59:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_del_active [2021-11-25 18:59:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 18:59:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 18:59:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:59:46,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:59:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_nested [2021-11-25 18:59:46,371 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_nested [2021-11-25 18:59:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-25 18:59:46,371 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-25 18:59:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:59:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure d_add [2021-11-25 18:59:46,371 INFO L138 BoogieDeclarations]: Found implementation of procedure d_add [2021-11-25 18:59:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_catatonic_mode [2021-11-25 18:59:46,372 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_catatonic_mode [2021-11-25 18:59:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2021-11-25 18:59:46,372 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2021-11-25 18:59:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:59:46,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:59:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-25 18:59:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-11-25 18:59:46,373 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-11-25 18:59:47,767 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:59:47,774 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:59:48,015 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:59:48,595 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; [2021-11-25 18:59:59,088 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:59:59,276 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:00:00,932 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:00:00,932 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-25 19:00:00,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:00:00 BoogieIcfgContainer [2021-11-25 19:00:00,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:00:00,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:00:00,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:00:00,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:00:00,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:59:40" (1/3) ... [2021-11-25 19:00:00,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6e09e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:00:00, skipping insertion in model container [2021-11-25 19:00:00,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:45" (2/3) ... [2021-11-25 19:00:00,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6e09e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:00:00, skipping insertion in model container [2021-11-25 19:00:00,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:00:00" (3/3) ... [2021-11-25 19:00:00,947 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2021-11-25 19:00:00,952 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:00:00,952 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 19:00:01,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:00:01,047 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 [2021-11-25 19:00:01,047 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 19:00:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 2608 states, 1550 states have (on average 1.3141935483870968) internal successors, (2037), 1600 states have internal predecessors, (2037), 894 states have call successors, (894), 162 states have call predecessors, (894), 161 states have return successors, (883), 877 states have call predecessors, (883), 883 states have call successors, (883) [2021-11-25 19:00:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-11-25 19:00:01,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:01,183 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] [2021-11-25 19:00:01,183 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:00:01,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:01,189 INFO L85 PathProgramCache]: Analyzing trace with hash 437954438, now seen corresponding path program 1 times [2021-11-25 19:00:01,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:01,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586901111] [2021-11-25 19:00:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:01,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-25 19:00:02,396 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:02,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586901111] [2021-11-25 19:00:02,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586901111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:02,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:02,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:00:02,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227164917] [2021-11-25 19:00:02,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:02,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:02,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:02,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:02,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:02,454 INFO L87 Difference]: Start difference. First operand has 2608 states, 1550 states have (on average 1.3141935483870968) internal successors, (2037), 1600 states have internal predecessors, (2037), 894 states have call successors, (894), 162 states have call predecessors, (894), 161 states have return successors, (883), 877 states have call predecessors, (883), 883 states have call successors, (883) 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) [2021-11-25 19:00:05,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:08,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:09,393 INFO L93 Difference]: Finished difference Result 7356 states and 10872 transitions. [2021-11-25 19:00:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:09,396 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 [2021-11-25 19:00:09,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:09,498 INFO L225 Difference]: With dead ends: 7356 [2021-11-25 19:00:09,498 INFO L226 Difference]: Without dead ends: 4821 [2021-11-25 19:00:09,531 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 [2021-11-25 19:00:09,536 INFO L933 BasicCegarLoop]: 4787 mSDtfsCounter, 3284 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3288 SdHoareTripleChecker+Valid, 8130 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:09,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3288 Valid, 8130 Invalid, 895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 882 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2021-11-25 19:00:09,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2021-11-25 19:00:09,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4816. [2021-11-25 19:00:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4816 states, 2875 states have (on average 1.3067826086956522) internal successors, (3757), 2963 states have internal predecessors, (3757), 1625 states have call successors, (1625), 314 states have call predecessors, (1625), 313 states have return successors, (1625), 1609 states have call predecessors, (1625), 1621 states have call successors, (1625) [2021-11-25 19:00:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4816 states to 4816 states and 7007 transitions. [2021-11-25 19:00:10,157 INFO L78 Accepts]: Start accepts. Automaton has 4816 states and 7007 transitions. Word has length 465 [2021-11-25 19:00:10,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:10,159 INFO L470 AbstractCegarLoop]: Abstraction has 4816 states and 7007 transitions. [2021-11-25 19:00:10,160 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) [2021-11-25 19:00:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4816 states and 7007 transitions. [2021-11-25 19:00:10,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-11-25 19:00:10,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:10,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:10,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:00:10,180 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:00:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1895974626, now seen corresponding path program 1 times [2021-11-25 19:00:10,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:10,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723383085] [2021-11-25 19:00:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:10,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-25 19:00:10,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:10,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723383085] [2021-11-25 19:00:10,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723383085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:10,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:10,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:00:10,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845194969] [2021-11-25 19:00:10,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:10,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:10,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:10,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:10,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:10,721 INFO L87 Difference]: Start difference. First operand 4816 states and 7007 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-25 19:00:13,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:15,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:18,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:19,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:19,581 INFO L93 Difference]: Finished difference Result 11680 states and 16960 transitions. [2021-11-25 19:00:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:19,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 491 [2021-11-25 19:00:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:19,670 INFO L225 Difference]: With dead ends: 11680 [2021-11-25 19:00:19,671 INFO L226 Difference]: Without dead ends: 6953 [2021-11-25 19:00:19,703 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 [2021-11-25 19:00:19,704 INFO L933 BasicCegarLoop]: 4825 mSDtfsCounter, 3180 mSDsluCounter, 3711 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3184 SdHoareTripleChecker+Valid, 8158 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:19,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3184 Valid, 8158 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 918 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2021-11-25 19:00:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6953 states. [2021-11-25 19:00:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6953 to 6934. [2021-11-25 19:00:20,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6934 states, 4150 states have (on average 1.3050602409638554) internal successors, (5416), 4280 states have internal predecessors, (5416), 2311 states have call successors, (2311), 471 states have call predecessors, (2311), 470 states have return successors, (2319), 2286 states have call predecessors, (2319), 2307 states have call successors, (2319) [2021-11-25 19:00:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6934 states to 6934 states and 10046 transitions. [2021-11-25 19:00:20,276 INFO L78 Accepts]: Start accepts. Automaton has 6934 states and 10046 transitions. Word has length 491 [2021-11-25 19:00:20,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:20,277 INFO L470 AbstractCegarLoop]: Abstraction has 6934 states and 10046 transitions. [2021-11-25 19:00:20,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-25 19:00:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 6934 states and 10046 transitions. [2021-11-25 19:00:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2021-11-25 19:00:20,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:20,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:20,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:00:20,295 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:00:20,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:20,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1555354366, now seen corresponding path program 1 times [2021-11-25 19:00:20,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:20,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333600645] [2021-11-25 19:00:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:20,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-25 19:00:20,692 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:20,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333600645] [2021-11-25 19:00:20,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333600645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:20,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:20,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:00:20,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268858333] [2021-11-25 19:00:20,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:20,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:20,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:20,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:20,698 INFO L87 Difference]: Start difference. First operand 6934 states and 10046 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:00:23,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:26,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:27,521 INFO L93 Difference]: Finished difference Result 17160 states and 24769 transitions. [2021-11-25 19:00:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:27,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 492 [2021-11-25 19:00:27,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:27,611 INFO L225 Difference]: With dead ends: 17160 [2021-11-25 19:00:27,611 INFO L226 Difference]: Without dead ends: 10315 [2021-11-25 19:00:27,649 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 [2021-11-25 19:00:27,653 INFO L933 BasicCegarLoop]: 4921 mSDtfsCounter, 3195 mSDsluCounter, 3711 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3199 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:27,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3199 Valid, 8258 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 929 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2021-11-25 19:00:27,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10315 states. [2021-11-25 19:00:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10315 to 10290. [2021-11-25 19:00:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10290 states, 6191 states have (on average 1.3035050880310128) internal successors, (8070), 6393 states have internal predecessors, (8070), 3351 states have call successors, (3351), 746 states have call predecessors, (3351), 745 states have return successors, (3379), 3310 states have call predecessors, (3379), 3347 states have call successors, (3379) [2021-11-25 19:00:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10290 states to 10290 states and 14800 transitions. [2021-11-25 19:00:28,276 INFO L78 Accepts]: Start accepts. Automaton has 10290 states and 14800 transitions. Word has length 492 [2021-11-25 19:00:28,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:28,278 INFO L470 AbstractCegarLoop]: Abstraction has 10290 states and 14800 transitions. [2021-11-25 19:00:28,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:00:28,279 INFO L276 IsEmpty]: Start isEmpty. Operand 10290 states and 14800 transitions. [2021-11-25 19:00:28,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2021-11-25 19:00:28,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:28,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:00:28,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:00:28,296 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:00:28,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:28,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2027128535, now seen corresponding path program 1 times [2021-11-25 19:00:28,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:28,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784635136] [2021-11-25 19:00:28,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:28,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7659 trivial. 0 not checked. [2021-11-25 19:00:28,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:28,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784635136] [2021-11-25 19:00:28,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784635136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:28,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:28,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:00:28,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296748895] [2021-11-25 19:00:28,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:28,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:28,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:28,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:28,759 INFO L87 Difference]: Start difference. First operand 10290 states and 14800 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:00:31,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:33,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:35,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:35,564 INFO L93 Difference]: Finished difference Result 27767 states and 39907 transitions. [2021-11-25 19:00:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:00:35,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 493 [2021-11-25 19:00:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:35,703 INFO L225 Difference]: With dead ends: 27767 [2021-11-25 19:00:35,703 INFO L226 Difference]: Without dead ends: 17566 [2021-11-25 19:00:35,871 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 [2021-11-25 19:00:35,876 INFO L933 BasicCegarLoop]: 4563 mSDtfsCounter, 3041 mSDsluCounter, 3712 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 7897 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:35,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3043 Valid, 7897 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 892 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-11-25 19:00:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17566 states. [2021-11-25 19:00:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17566 to 17547. [2021-11-25 19:00:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17547 states, 10544 states have (on average 1.2993171471927163) internal successors, (13700), 10903 states have internal predecessors, (13700), 5704 states have call successors, (5704), 1300 states have call predecessors, (5704), 1296 states have return successors, (5766), 5626 states have call predecessors, (5766), 5700 states have call successors, (5766) [2021-11-25 19:00:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17547 states to 17547 states and 25170 transitions. [2021-11-25 19:00:36,730 INFO L78 Accepts]: Start accepts. Automaton has 17547 states and 25170 transitions. Word has length 493 [2021-11-25 19:00:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:36,731 INFO L470 AbstractCegarLoop]: Abstraction has 17547 states and 25170 transitions. [2021-11-25 19:00:36,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-25 19:00:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 17547 states and 25170 transitions. [2021-11-25 19:00:36,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2021-11-25 19:00:36,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:36,742 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] [2021-11-25 19:00:36,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:00:36,743 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:00:36,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:36,743 INFO L85 PathProgramCache]: Analyzing trace with hash 930517866, now seen corresponding path program 1 times [2021-11-25 19:00:36,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:36,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470475565] [2021-11-25 19:00:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:36,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7963 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2021-11-25 19:00:37,396 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:37,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470475565] [2021-11-25 19:00:37,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470475565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:37,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:37,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:00:37,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952977719] [2021-11-25 19:00:37,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:37,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:00:37,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:00:37,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:00:37,402 INFO L87 Difference]: Start difference. First operand 17547 states and 25170 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) [2021-11-25 19:00:40,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:42,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:45,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:47,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:49,126 INFO L93 Difference]: Finished difference Result 18787 states and 26869 transitions. [2021-11-25 19:00:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:00:49,127 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 [2021-11-25 19:00:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:49,241 INFO L225 Difference]: With dead ends: 18787 [2021-11-25 19:00:49,241 INFO L226 Difference]: Without dead ends: 18785 [2021-11-25 19:00:49,259 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 [2021-11-25 19:00:49,260 INFO L933 BasicCegarLoop]: 4152 mSDtfsCounter, 3359 mSDsluCounter, 11136 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 14228 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:49,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3367 Valid, 14228 Invalid, 1504 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1499 Invalid, 4 Unknown, 0 Unchecked, 11.2s Time] [2021-11-25 19:00:49,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18785 states. [2021-11-25 19:00:50,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18785 to 18780. [2021-11-25 19:00:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18780 states, 11257 states have (on average 1.2969707737407836) internal successors, (14600), 11641 states have internal predecessors, (14600), 6099 states have call successors, (6099), 1424 states have call predecessors, (6099), 1421 states have return successors, (6165), 6018 states have call predecessors, (6165), 6095 states have call successors, (6165) [2021-11-25 19:00:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18780 states to 18780 states and 26864 transitions. [2021-11-25 19:00:50,371 INFO L78 Accepts]: Start accepts. Automaton has 18780 states and 26864 transitions. Word has length 515 [2021-11-25 19:00:50,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:50,372 INFO L470 AbstractCegarLoop]: Abstraction has 18780 states and 26864 transitions. [2021-11-25 19:00:50,372 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) [2021-11-25 19:00:50,372 INFO L276 IsEmpty]: Start isEmpty. Operand 18780 states and 26864 transitions. [2021-11-25 19:00:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2021-11-25 19:00:50,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:50,384 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] [2021-11-25 19:00:50,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:00:50,385 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:00:50,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:50,386 INFO L85 PathProgramCache]: Analyzing trace with hash 279731317, now seen corresponding path program 1 times [2021-11-25 19:00:50,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:50,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628355634] [2021-11-25 19:00:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:50,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2021-11-25 19:00:51,150 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:51,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628355634] [2021-11-25 19:00:51,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628355634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:51,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:51,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:00:51,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018731015] [2021-11-25 19:00:51,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:51,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:00:51,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:51,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:00:51,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:00:51,154 INFO L87 Difference]: Start difference. First operand 18780 states and 26864 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) [2021-11-25 19:00:54,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:56,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:00:58,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:00,361 INFO L93 Difference]: Finished difference Result 18791 states and 26872 transitions. [2021-11-25 19:01:00,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:01:00,362 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 [2021-11-25 19:01:00,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:00,456 INFO L225 Difference]: With dead ends: 18791 [2021-11-25 19:01:00,457 INFO L226 Difference]: Without dead ends: 18789 [2021-11-25 19:01:00,470 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 [2021-11-25 19:01:00,471 INFO L933 BasicCegarLoop]: 4177 mSDtfsCounter, 3354 mSDsluCounter, 11182 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3361 SdHoareTripleChecker+Valid, 14297 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:00,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3361 Valid, 14297 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1503 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2021-11-25 19:01:00,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18789 states. [2021-11-25 19:01:01,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18789 to 18784. [2021-11-25 19:01:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18784 states, 11260 states have (on average 1.2968916518650089) internal successors, (14603), 11644 states have internal predecessors, (14603), 6099 states have call successors, (6099), 1425 states have call predecessors, (6099), 1422 states have return successors, (6165), 6018 states have call predecessors, (6165), 6095 states have call successors, (6165) [2021-11-25 19:01:01,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18784 states to 18784 states and 26867 transitions. [2021-11-25 19:01:01,617 INFO L78 Accepts]: Start accepts. Automaton has 18784 states and 26867 transitions. Word has length 520 [2021-11-25 19:01:01,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:01,618 INFO L470 AbstractCegarLoop]: Abstraction has 18784 states and 26867 transitions. [2021-11-25 19:01:01,619 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) [2021-11-25 19:01:01,619 INFO L276 IsEmpty]: Start isEmpty. Operand 18784 states and 26867 transitions. [2021-11-25 19:01:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2021-11-25 19:01:01,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:01,633 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:01,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:01:01,634 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:01:01,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:01,634 INFO L85 PathProgramCache]: Analyzing trace with hash 681168145, now seen corresponding path program 1 times [2021-11-25 19:01:01,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:01,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162758409] [2021-11-25 19:01:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:01,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8071 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8067 trivial. 0 not checked. [2021-11-25 19:01:02,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:02,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162758409] [2021-11-25 19:01:02,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162758409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:02,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:02,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:01:02,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237098433] [2021-11-25 19:01:02,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:02,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:01:02,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:02,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:01:02,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:01:02,120 INFO L87 Difference]: Start difference. First operand 18784 states and 26867 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-25 19:01:05,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:07,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:09,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:11,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:14,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:16,546 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:18,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:20,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:20,442 INFO L93 Difference]: Finished difference Result 18797 states and 26876 transitions. [2021-11-25 19:01:20,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:01:20,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 535 [2021-11-25 19:01:20,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:20,537 INFO L225 Difference]: With dead ends: 18797 [2021-11-25 19:01:20,537 INFO L226 Difference]: Without dead ends: 18795 [2021-11-25 19:01:20,550 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 [2021-11-25 19:01:20,551 INFO L933 BasicCegarLoop]: 4155 mSDtfsCounter, 3354 mSDsluCounter, 11139 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3358 SdHoareTripleChecker+Valid, 14231 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:20,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3358 Valid, 14231 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1499 Invalid, 7 Unknown, 0 Unchecked, 17.9s Time] [2021-11-25 19:01:20,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18795 states. [2021-11-25 19:01:21,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18795 to 18791. [2021-11-25 19:01:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18791 states, 11265 states have (on average 1.2967598757212606) internal successors, (14608), 11649 states have internal predecessors, (14608), 6099 states have call successors, (6099), 1426 states have call predecessors, (6099), 1424 states have return successors, (6165), 6019 states have call predecessors, (6165), 6095 states have call successors, (6165) [2021-11-25 19:01:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18791 states to 18791 states and 26872 transitions. [2021-11-25 19:01:21,611 INFO L78 Accepts]: Start accepts. Automaton has 18791 states and 26872 transitions. Word has length 535 [2021-11-25 19:01:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:21,613 INFO L470 AbstractCegarLoop]: Abstraction has 18791 states and 26872 transitions. [2021-11-25 19:01:21,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-25 19:01:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 18791 states and 26872 transitions. [2021-11-25 19:01:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2021-11-25 19:01:21,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:21,639 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:21,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:01:21,639 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:01:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:21,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1093123410, now seen corresponding path program 1 times [2021-11-25 19:01:21,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:21,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617740253] [2021-11-25 19:01:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:21,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8081 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8075 trivial. 0 not checked. [2021-11-25 19:01:22,347 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:22,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617740253] [2021-11-25 19:01:22,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617740253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:22,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:22,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:01:22,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658268730] [2021-11-25 19:01:22,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:22,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:01:22,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:22,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:01:22,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:01:22,350 INFO L87 Difference]: Start difference. First operand 18791 states and 26872 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-25 19:01:25,546 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:27,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:29,872 INFO L93 Difference]: Finished difference Result 34757 states and 49866 transitions. [2021-11-25 19:01:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:01:29,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 540 [2021-11-25 19:01:29,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:29,988 INFO L225 Difference]: With dead ends: 34757 [2021-11-25 19:01:29,988 INFO L226 Difference]: Without dead ends: 34753 [2021-11-25 19:01:29,998 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 [2021-11-25 19:01:29,999 INFO L933 BasicCegarLoop]: 4572 mSDtfsCounter, 3396 mSDsluCounter, 13599 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3399 SdHoareTripleChecker+Valid, 16920 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:29,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3399 Valid, 16920 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1697 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-11-25 19:01:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34753 states. [2021-11-25 19:01:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34753 to 34738. [2021-11-25 19:01:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34738 states, 20837 states have (on average 1.2984594711330806) internal successors, (27056), 21543 states have internal predecessors, (27056), 11259 states have call successors, (11259), 2650 states have call predecessors, (11259), 2639 states have return successors, (11535), 11094 states have call predecessors, (11535), 11251 states have call successors, (11535) [2021-11-25 19:01:31,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34738 states to 34738 states and 49850 transitions. [2021-11-25 19:01:31,746 INFO L78 Accepts]: Start accepts. Automaton has 34738 states and 49850 transitions. Word has length 540 [2021-11-25 19:01:31,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:31,747 INFO L470 AbstractCegarLoop]: Abstraction has 34738 states and 49850 transitions. [2021-11-25 19:01:31,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-25 19:01:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 34738 states and 49850 transitions. [2021-11-25 19:01:31,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2021-11-25 19:01:31,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:31,767 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 5, 4, 4, 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, 1] [2021-11-25 19:01:31,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:01:31,768 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:01:31,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1002616918, now seen corresponding path program 1 times [2021-11-25 19:01:31,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:31,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105686475] [2021-11-25 19:01:31,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:31,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8086 trivial. 0 not checked. [2021-11-25 19:01:32,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:32,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105686475] [2021-11-25 19:01:32,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105686475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:32,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:32,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:01:32,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331945914] [2021-11-25 19:01:32,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:32,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:01:32,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:32,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:01:32,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:01:32,663 INFO L87 Difference]: Start difference. First operand 34738 states and 49850 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) [2021-11-25 19:01:35,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:38,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:40,883 INFO L93 Difference]: Finished difference Result 63071 states and 91073 transitions. [2021-11-25 19:01:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:01:40,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (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) Word has length 544 [2021-11-25 19:01:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:41,351 INFO L225 Difference]: With dead ends: 63071 [2021-11-25 19:01:41,351 INFO L226 Difference]: Without dead ends: 62892 [2021-11-25 19:01:41,381 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 [2021-11-25 19:01:41,382 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 3186 mSDsluCounter, 13217 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3188 SdHoareTripleChecker+Valid, 16456 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:41,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3188 Valid, 16456 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1670 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2021-11-25 19:01:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62892 states. [2021-11-25 19:01:44,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62892 to 62850. [2021-11-25 19:01:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62850 states, 37598 states have (on average 1.2995638065854567) internal successors, (48861), 38940 states have internal predecessors, (48861), 20385 states have call successors, (20385), 4935 states have call predecessors, (20385), 4864 states have return successors, (21486), 19973 states have call predecessors, (21486), 20373 states have call successors, (21486) [2021-11-25 19:01:44,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62850 states to 62850 states and 90732 transitions. [2021-11-25 19:01:44,825 INFO L78 Accepts]: Start accepts. Automaton has 62850 states and 90732 transitions. Word has length 544 [2021-11-25 19:01:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:44,826 INFO L470 AbstractCegarLoop]: Abstraction has 62850 states and 90732 transitions. [2021-11-25 19:01:44,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (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) [2021-11-25 19:01:44,826 INFO L276 IsEmpty]: Start isEmpty. Operand 62850 states and 90732 transitions. [2021-11-25 19:01:45,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2021-11-25 19:01:45,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:45,076 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:01:45,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:01:45,077 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:01:45,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2046999990, now seen corresponding path program 1 times [2021-11-25 19:01:45,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:45,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483034287] [2021-11-25 19:01:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:45,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8076 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8073 trivial. 0 not checked. [2021-11-25 19:01:45,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:45,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483034287] [2021-11-25 19:01:45,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483034287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:45,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:45,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:01:45,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222284732] [2021-11-25 19:01:45,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:45,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:01:45,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:45,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:01:45,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:01:45,524 INFO L87 Difference]: Start difference. First operand 62850 states and 90732 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-25 19:01:48,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:51,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:54,681 INFO L93 Difference]: Finished difference Result 150865 states and 217984 transitions. [2021-11-25 19:01:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:01:54,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 554 [2021-11-25 19:01:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:55,251 INFO L225 Difference]: With dead ends: 150865 [2021-11-25 19:01:55,252 INFO L226 Difference]: Without dead ends: 90405 [2021-11-25 19:01:55,469 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 [2021-11-25 19:01:55,470 INFO L933 BasicCegarLoop]: 6087 mSDtfsCounter, 3036 mSDsluCounter, 3705 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3038 SdHoareTripleChecker+Valid, 9414 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:55,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3038 Valid, 9414 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1162 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 19:01:55,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90405 states. [2021-11-25 19:01:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90405 to 90329. [2021-11-25 19:01:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90329 states, 54023 states have (on average 1.2989467449049479) internal successors, (70173), 55980 states have internal predecessors, (70173), 29302 states have call successors, (29302), 7112 states have call predecessors, (29302), 7001 states have return successors, (30912), 28689 states have call predecessors, (30912), 29290 states have call successors, (30912) [2021-11-25 19:02:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90329 states to 90329 states and 130387 transitions. [2021-11-25 19:02:00,173 INFO L78 Accepts]: Start accepts. Automaton has 90329 states and 130387 transitions. Word has length 554 [2021-11-25 19:02:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:00,175 INFO L470 AbstractCegarLoop]: Abstraction has 90329 states and 130387 transitions. [2021-11-25 19:02:00,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-25 19:02:00,175 INFO L276 IsEmpty]: Start isEmpty. Operand 90329 states and 130387 transitions. [2021-11-25 19:02:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2021-11-25 19:02:00,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:00,197 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:00,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:02:00,198 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:02:00,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:00,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2092845747, now seen corresponding path program 1 times [2021-11-25 19:02:00,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:00,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114795680] [2021-11-25 19:02:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:00,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8049 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8046 trivial. 0 not checked. [2021-11-25 19:02:00,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:00,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114795680] [2021-11-25 19:02:00,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114795680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:00,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:00,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:02:00,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156530002] [2021-11-25 19:02:00,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:00,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:00,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:00,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:00,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:00,553 INFO L87 Difference]: Start difference. First operand 90329 states and 130387 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-25 19:02:03,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:06,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:11,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:11,190 INFO L93 Difference]: Finished difference Result 217286 states and 313718 transitions. [2021-11-25 19:02:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:02:11,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 555 [2021-11-25 19:02:11,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:12,023 INFO L225 Difference]: With dead ends: 217286 [2021-11-25 19:02:12,023 INFO L226 Difference]: Without dead ends: 129347 [2021-11-25 19:02:12,243 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 [2021-11-25 19:02:12,244 INFO L933 BasicCegarLoop]: 6224 mSDtfsCounter, 3189 mSDsluCounter, 3704 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3193 SdHoareTripleChecker+Valid, 9554 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:12,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3193 Valid, 9554 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1173 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 19:02:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129347 states. [2021-11-25 19:02:17,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129347 to 129205. [2021-11-25 19:02:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129205 states, 77377 states have (on average 1.2989260374529898) internal successors, (100507), 80214 states have internal predecessors, (100507), 41738 states have call successors, (41738), 10258 states have call predecessors, (41738), 10087 states have return successors, (44083), 40841 states have call predecessors, (44083), 41726 states have call successors, (44083) [2021-11-25 19:02:18,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129205 states to 129205 states and 186328 transitions. [2021-11-25 19:02:18,595 INFO L78 Accepts]: Start accepts. Automaton has 129205 states and 186328 transitions. Word has length 555 [2021-11-25 19:02:18,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:18,597 INFO L470 AbstractCegarLoop]: Abstraction has 129205 states and 186328 transitions. [2021-11-25 19:02:18,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-25 19:02:18,597 INFO L276 IsEmpty]: Start isEmpty. Operand 129205 states and 186328 transitions. [2021-11-25 19:02:18,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2021-11-25 19:02:18,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:18,623 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:18,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:02:18,624 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 19:02:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:18,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1016781090, now seen corresponding path program 1 times [2021-11-25 19:02:18,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:18,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483021141] [2021-11-25 19:02:18,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:18,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8049 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8046 trivial. 0 not checked. [2021-11-25 19:02:18,927 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:18,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483021141] [2021-11-25 19:02:18,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483021141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:18,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:18,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:02:18,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188134536] [2021-11-25 19:02:18,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:18,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:18,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:18,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:18,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:18,930 INFO L87 Difference]: Start difference. First operand 129205 states and 186328 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-25 19:02:21,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:24,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:26,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []